(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
typeof define === 'function' && define.amd ? define(factory) :
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.shp = factory());
})(this, (function () { 'use strict';
function globals(defs) {
defs('EPSG:4326', "+title=WGS 84 (long/lat) +proj=longlat +ellps=WGS84 +datum=WGS84 +units=degrees");
defs('EPSG:4269', "+title=NAD83 (long/lat) +proj=longlat +a=6378137.0 +b=6356752.31414036 +ellps=GRS80 +datum=NAD83 +units=degrees");
defs('EPSG:3857', "+title=WGS 84 / Pseudo-Mercator +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +no_defs");
defs.WGS84 = defs['EPSG:4326'];
defs['EPSG:3785'] = defs['EPSG:3857']; // maintain backward compat, official code is 3857
defs.GOOGLE = defs['EPSG:3857'];
defs['EPSG:900913'] = defs['EPSG:3857'];
defs['EPSG:102113'] = defs['EPSG:3857'];
}
var PJD_3PARAM = 1;
var PJD_7PARAM = 2;
var PJD_GRIDSHIFT = 3;
var PJD_WGS84 = 4; // WGS84 or equivalent
var PJD_NODATUM = 5; // WGS84 or equivalent
var SRS_WGS84_SEMIMAJOR = 6378137.0; // only used in grid shift transforms
var SRS_WGS84_SEMIMINOR = 6356752.314; // only used in grid shift transforms
var SRS_WGS84_ESQUARED = 0.0066943799901413165; // only used in grid shift transforms
var SEC_TO_RAD = 4.84813681109535993589914102357e-6;
var HALF_PI = Math.PI/2;
// ellipoid pj_set_ell.c
var SIXTH = 0.1666666666666666667;
/* 1/6 */
var RA4 = 0.04722222222222222222;
/* 17/360 */
var RA6 = 0.02215608465608465608;
var EPSLN = 1.0e-10;
// you'd think you could use Number.EPSILON above but that makes
// Mollweide get into an infinate loop.
var D2R$1 = 0.01745329251994329577;
var R2D = 57.29577951308232088;
var FORTPI = Math.PI/4;
var TWO_PI = Math.PI * 2;
// SPI is slightly greater than Math.PI, so values that exceed the -180..180
// degree range by a tiny amount don't get wrapped. This prevents points that
// have drifted from their original location along the 180th meridian (due to
// floating point error) from changing their sign.
var SPI = 3.14159265359;
var exports$3 = {};
exports$3.greenwich = 0.0; //"0dE",
exports$3.lisbon = -9.131906111111; //"9d07'54.862\"W",
exports$3.paris = 2.337229166667; //"2d20'14.025\"E",
exports$3.bogota = -74.080916666667; //"74d04'51.3\"W",
exports$3.madrid = -3.687938888889; //"3d41'16.58\"W",
exports$3.rome = 12.452333333333; //"12d27'8.4\"E",
exports$3.bern = 7.439583333333; //"7d26'22.5\"E",
exports$3.jakarta = 106.807719444444; //"106d48'27.79\"E",
exports$3.ferro = -17.666666666667; //"17d40'W",
exports$3.brussels = 4.367975; //"4d22'4.71\"E",
exports$3.stockholm = 18.058277777778; //"18d3'29.8\"E",
exports$3.athens = 23.7163375; //"23d42'58.815\"E",
exports$3.oslo = 10.722916666667; //"10d43'22.5\"E"
var units = {
ft: {to_meter: 0.3048},
'us-ft': {to_meter: 1200 / 3937}
};
var ignoredChar = /[\s_\-\/\(\)]/g;
function match(obj, key) {
if (obj[key]) {
return obj[key];
}
var keys = Object.keys(obj);
var lkey = key.toLowerCase().replace(ignoredChar, '');
var i = -1;
var testkey, processedKey;
while (++i < keys.length) {
testkey = keys[i];
processedKey = testkey.toLowerCase().replace(ignoredChar, '');
if (processedKey === lkey) {
return obj[testkey];
}
}
}
function projStr(defData) {
var self = {};
var paramObj = defData.split('+').map(function(v) {
return v.trim();
}).filter(function(a) {
return a;
}).reduce(function(p, a) {
var split = a.split('=');
split.push(true);
p[split[0].toLowerCase()] = split[1];
return p;
}, {});
var paramName, paramVal, paramOutname;
var params = {
proj: 'projName',
datum: 'datumCode',
rf: function(v) {
self.rf = parseFloat(v);
},
lat_0: function(v) {
self.lat0 = v * D2R$1;
},
lat_1: function(v) {
self.lat1 = v * D2R$1;
},
lat_2: function(v) {
self.lat2 = v * D2R$1;
},
lat_ts: function(v) {
self.lat_ts = v * D2R$1;
},
lon_0: function(v) {
self.long0 = v * D2R$1;
},
lon_1: function(v) {
self.long1 = v * D2R$1;
},
lon_2: function(v) {
self.long2 = v * D2R$1;
},
alpha: function(v) {
self.alpha = parseFloat(v) * D2R$1;
},
gamma: function(v) {
self.rectified_grid_angle = parseFloat(v);
},
lonc: function(v) {
self.longc = v * D2R$1;
},
x_0: function(v) {
self.x0 = parseFloat(v);
},
y_0: function(v) {
self.y0 = parseFloat(v);
},
k_0: function(v) {
self.k0 = parseFloat(v);
},
k: function(v) {
self.k0 = parseFloat(v);
},
a: function(v) {
self.a = parseFloat(v);
},
b: function(v) {
self.b = parseFloat(v);
},
r_a: function() {
self.R_A = true;
},
zone: function(v) {
self.zone = parseInt(v, 10);
},
south: function() {
self.utmSouth = true;
},
towgs84: function(v) {
self.datum_params = v.split(",").map(function(a) {
return parseFloat(a);
});
},
to_meter: function(v) {
self.to_meter = parseFloat(v);
},
units: function(v) {
self.units = v;
var unit = match(units, v);
if (unit) {
self.to_meter = unit.to_meter;
}
},
from_greenwich: function(v) {
self.from_greenwich = v * D2R$1;
},
pm: function(v) {
var pm = match(exports$3, v);
self.from_greenwich = (pm ? pm : parseFloat(v)) * D2R$1;
},
nadgrids: function(v) {
if (v === '@null') {
self.datumCode = 'none';
}
else {
self.nadgrids = v;
}
},
axis: function(v) {
var legalAxis = "ewnsud";
if (v.length === 3 && legalAxis.indexOf(v.substr(0, 1)) !== -1 && legalAxis.indexOf(v.substr(1, 1)) !== -1 && legalAxis.indexOf(v.substr(2, 1)) !== -1) {
self.axis = v;
}
},
approx: function() {
self.approx = true;
}
};
for (paramName in paramObj) {
paramVal = paramObj[paramName];
if (paramName in params) {
paramOutname = params[paramName];
if (typeof paramOutname === 'function') {
paramOutname(paramVal);
}
else {
self[paramOutname] = paramVal;
}
}
else {
self[paramName] = paramVal;
}
}
if(typeof self.datumCode === 'string' && self.datumCode !== "WGS84"){
self.datumCode = self.datumCode.toLowerCase();
}
return self;
}
var NEUTRAL = 1;
var KEYWORD = 2;
var NUMBER = 3;
var QUOTED = 4;
var AFTERQUOTE = 5;
var ENDED = -1;
var whitespace = /\s/;
var latin = /[A-Za-z]/;
var keyword = /[A-Za-z84_]/;
var endThings = /[,\]]/;
var digets = /[\d\.E\-\+]/;
// const ignoredChar = /[\s_\-\/\(\)]/g;
function Parser(text) {
if (typeof text !== 'string') {
throw new Error('not a string');
}
this.text = text.trim();
this.level = 0;
this.place = 0;
this.root = null;
this.stack = [];
this.currentObject = null;
this.state = NEUTRAL;
}
Parser.prototype.readCharicter = function() {
var char = this.text[this.place++];
if (this.state !== QUOTED) {
while (whitespace.test(char)) {
if (this.place >= this.text.length) {
return;
}
char = this.text[this.place++];
}
}
switch (this.state) {
case NEUTRAL:
return this.neutral(char);
case KEYWORD:
return this.keyword(char)
case QUOTED:
return this.quoted(char);
case AFTERQUOTE:
return this.afterquote(char);
case NUMBER:
return this.number(char);
case ENDED:
return;
}
};
Parser.prototype.afterquote = function(char) {
if (char === '"') {
this.word += '"';
this.state = QUOTED;
return;
}
if (endThings.test(char)) {
this.word = this.word.trim();
this.afterItem(char);
return;
}
throw new Error('havn\'t handled "' +char + '" in afterquote yet, index ' + this.place);
};
Parser.prototype.afterItem = function(char) {
if (char === ',') {
if (this.word !== null) {
this.currentObject.push(this.word);
}
this.word = null;
this.state = NEUTRAL;
return;
}
if (char === ']') {
this.level--;
if (this.word !== null) {
this.currentObject.push(this.word);
this.word = null;
}
this.state = NEUTRAL;
this.currentObject = this.stack.pop();
if (!this.currentObject) {
this.state = ENDED;
}
return;
}
};
Parser.prototype.number = function(char) {
if (digets.test(char)) {
this.word += char;
return;
}
if (endThings.test(char)) {
this.word = parseFloat(this.word);
this.afterItem(char);
return;
}
throw new Error('havn\'t handled "' +char + '" in number yet, index ' + this.place);
};
Parser.prototype.quoted = function(char) {
if (char === '"') {
this.state = AFTERQUOTE;
return;
}
this.word += char;
return;
};
Parser.prototype.keyword = function(char) {
if (keyword.test(char)) {
this.word += char;
return;
}
if (char === '[') {
var newObjects = [];
newObjects.push(this.word);
this.level++;
if (this.root === null) {
this.root = newObjects;
} else {
this.currentObject.push(newObjects);
}
this.stack.push(this.currentObject);
this.currentObject = newObjects;
this.state = NEUTRAL;
return;
}
if (endThings.test(char)) {
this.afterItem(char);
return;
}
throw new Error('havn\'t handled "' +char + '" in keyword yet, index ' + this.place);
};
Parser.prototype.neutral = function(char) {
if (latin.test(char)) {
this.word = char;
this.state = KEYWORD;
return;
}
if (char === '"') {
this.word = '';
this.state = QUOTED;
return;
}
if (digets.test(char)) {
this.word = char;
this.state = NUMBER;
return;
}
if (endThings.test(char)) {
this.afterItem(char);
return;
}
throw new Error('havn\'t handled "' +char + '" in neutral yet, index ' + this.place);
};
Parser.prototype.output = function() {
while (this.place < this.text.length) {
this.readCharicter();
}
if (this.state === ENDED) {
return this.root;
}
throw new Error('unable to parse string "' +this.text + '". State is ' + this.state);
};
function parseString(txt) {
var parser = new Parser(txt);
return parser.output();
}
function mapit(obj, key, value) {
if (Array.isArray(key)) {
value.unshift(key);
key = null;
}
var thing = key ? {} : obj;
var out = value.reduce(function(newObj, item) {
sExpr(item, newObj);
return newObj
}, thing);
if (key) {
obj[key] = out;
}
}
function sExpr(v, obj) {
if (!Array.isArray(v)) {
obj[v] = true;
return;
}
var key = v.shift();
if (key === 'PARAMETER') {
key = v.shift();
}
if (v.length === 1) {
if (Array.isArray(v[0])) {
obj[key] = {};
sExpr(v[0], obj[key]);
return;
}
obj[key] = v[0];
return;
}
if (!v.length) {
obj[key] = true;
return;
}
if (key === 'TOWGS84') {
obj[key] = v;
return;
}
if (key === 'AXIS') {
if (!(key in obj)) {
obj[key] = [];
}
obj[key].push(v);
return;
}
if (!Array.isArray(key)) {
obj[key] = {};
}
var i;
switch (key) {
case 'UNIT':
case 'PRIMEM':
case 'VERT_DATUM':
obj[key] = {
name: v[0].toLowerCase(),
convert: v[1]
};
if (v.length === 3) {
sExpr(v[2], obj[key]);
}
return;
case 'SPHEROID':
case 'ELLIPSOID':
obj[key] = {
name: v[0],
a: v[1],
rf: v[2]
};
if (v.length === 4) {
sExpr(v[3], obj[key]);
}
return;
case 'PROJECTEDCRS':
case 'PROJCRS':
case 'GEOGCS':
case 'GEOCCS':
case 'PROJCS':
case 'LOCAL_CS':
case 'GEODCRS':
case 'GEODETICCRS':
case 'GEODETICDATUM':
case 'EDATUM':
case 'ENGINEERINGDATUM':
case 'VERT_CS':
case 'VERTCRS':
case 'VERTICALCRS':
case 'COMPD_CS':
case 'COMPOUNDCRS':
case 'ENGINEERINGCRS':
case 'ENGCRS':
case 'FITTED_CS':
case 'LOCAL_DATUM':
case 'DATUM':
v[0] = ['name', v[0]];
mapit(obj, key, v);
return;
default:
i = -1;
while (++i < v.length) {
if (!Array.isArray(v[i])) {
return sExpr(v, obj[key]);
}
}
return mapit(obj, key, v);
}
}
var D2R = 0.01745329251994329577;
function rename(obj, params) {
var outName = params[0];
var inName = params[1];
if (!(outName in obj) && (inName in obj)) {
obj[outName] = obj[inName];
if (params.length === 3) {
obj[outName] = params[2](obj[outName]);
}
}
}
function d2r(input) {
return input * D2R;
}
function cleanWKT(wkt) {
if (wkt.type === 'GEOGCS') {
wkt.projName = 'longlat';
} else if (wkt.type === 'LOCAL_CS') {
wkt.projName = 'identity';
wkt.local = true;
} else {
if (typeof wkt.PROJECTION === 'object') {
wkt.projName = Object.keys(wkt.PROJECTION)[0];
} else {
wkt.projName = wkt.PROJECTION;
}
}
if (wkt.AXIS) {
var axisOrder = '';
for (var i = 0, ii = wkt.AXIS.length; i < ii; ++i) {
var axis = [wkt.AXIS[i][0].toLowerCase(), wkt.AXIS[i][1].toLowerCase()];
if (axis[0].indexOf('north') !== -1 || ((axis[0] === 'y' || axis[0] === 'lat') && axis[1] === 'north')) {
axisOrder += 'n';
} else if (axis[0].indexOf('south') !== -1 || ((axis[0] === 'y' || axis[0] === 'lat') && axis[1] === 'south')) {
axisOrder += 's';
} else if (axis[0].indexOf('east') !== -1 || ((axis[0] === 'x' || axis[0] === 'lon') && axis[1] === 'east')) {
axisOrder += 'e';
} else if (axis[0].indexOf('west') !== -1 || ((axis[0] === 'x' || axis[0] === 'lon') && axis[1] === 'west')) {
axisOrder += 'w';
}
}
if (axisOrder.length === 2) {
axisOrder += 'u';
}
if (axisOrder.length === 3) {
wkt.axis = axisOrder;
}
}
if (wkt.UNIT) {
wkt.units = wkt.UNIT.name.toLowerCase();
if (wkt.units === 'metre') {
wkt.units = 'meter';
}
if (wkt.UNIT.convert) {
if (wkt.type === 'GEOGCS') {
if (wkt.DATUM && wkt.DATUM.SPHEROID) {
wkt.to_meter = wkt.UNIT.convert*wkt.DATUM.SPHEROID.a;
}
} else {
wkt.to_meter = wkt.UNIT.convert;
}
}
}
var geogcs = wkt.GEOGCS;
if (wkt.type === 'GEOGCS') {
geogcs = wkt;
}
if (geogcs) {
//if(wkt.GEOGCS.PRIMEM&&wkt.GEOGCS.PRIMEM.convert){
// wkt.from_greenwich=wkt.GEOGCS.PRIMEM.convert*D2R;
//}
if (geogcs.DATUM) {
wkt.datumCode = geogcs.DATUM.name.toLowerCase();
} else {
wkt.datumCode = geogcs.name.toLowerCase();
}
if (wkt.datumCode.slice(0, 2) === 'd_') {
wkt.datumCode = wkt.datumCode.slice(2);
}
if (wkt.datumCode === 'new_zealand_geodetic_datum_1949' || wkt.datumCode === 'new_zealand_1949') {
wkt.datumCode = 'nzgd49';
}
if (wkt.datumCode === 'wgs_1984' || wkt.datumCode === 'world_geodetic_system_1984') {
if (wkt.PROJECTION === 'Mercator_Auxiliary_Sphere') {
wkt.sphere = true;
}
wkt.datumCode = 'wgs84';
}
if (wkt.datumCode.slice(-6) === '_ferro') {
wkt.datumCode = wkt.datumCode.slice(0, - 6);
}
if (wkt.datumCode.slice(-8) === '_jakarta') {
wkt.datumCode = wkt.datumCode.slice(0, - 8);
}
if (~wkt.datumCode.indexOf('belge')) {
wkt.datumCode = 'rnb72';
}
if (geogcs.DATUM && geogcs.DATUM.SPHEROID) {
wkt.ellps = geogcs.DATUM.SPHEROID.name.replace('_19', '').replace(/[Cc]larke\_18/, 'clrk');
if (wkt.ellps.toLowerCase().slice(0, 13) === 'international') {
wkt.ellps = 'intl';
}
wkt.a = geogcs.DATUM.SPHEROID.a;
wkt.rf = parseFloat(geogcs.DATUM.SPHEROID.rf, 10);
}
if (geogcs.DATUM && geogcs.DATUM.TOWGS84) {
wkt.datum_params = geogcs.DATUM.TOWGS84;
}
if (~wkt.datumCode.indexOf('osgb_1936')) {
wkt.datumCode = 'osgb36';
}
if (~wkt.datumCode.indexOf('osni_1952')) {
wkt.datumCode = 'osni52';
}
if (~wkt.datumCode.indexOf('tm65')
|| ~wkt.datumCode.indexOf('geodetic_datum_of_1965')) {
wkt.datumCode = 'ire65';
}
if (wkt.datumCode === 'ch1903+') {
wkt.datumCode = 'ch1903';
}
if (~wkt.datumCode.indexOf('israel')) {
wkt.datumCode = 'isr93';
}
}
if (wkt.b && !isFinite(wkt.b)) {
wkt.b = wkt.a;
}
function toMeter(input) {
var ratio = wkt.to_meter || 1;
return input * ratio;
}
var renamer = function(a) {
return rename(wkt, a);
};
var list = [
['standard_parallel_1', 'Standard_Parallel_1'],
['standard_parallel_1', 'Latitude of 1st standard parallel'],
['standard_parallel_2', 'Standard_Parallel_2'],
['standard_parallel_2', 'Latitude of 2nd standard parallel'],
['false_easting', 'False_Easting'],
['false_easting', 'False easting'],
['false-easting', 'Easting at false origin'],
['false_northing', 'False_Northing'],
['false_northing', 'False northing'],
['false_northing', 'Northing at false origin'],
['central_meridian', 'Central_Meridian'],
['central_meridian', 'Longitude of natural origin'],
['central_meridian', 'Longitude of false origin'],
['latitude_of_origin', 'Latitude_Of_Origin'],
['latitude_of_origin', 'Central_Parallel'],
['latitude_of_origin', 'Latitude of natural origin'],
['latitude_of_origin', 'Latitude of false origin'],
['scale_factor', 'Scale_Factor'],
['k0', 'scale_factor'],
['latitude_of_center', 'Latitude_Of_Center'],
['latitude_of_center', 'Latitude_of_center'],
['lat0', 'latitude_of_center', d2r],
['longitude_of_center', 'Longitude_Of_Center'],
['longitude_of_center', 'Longitude_of_center'],
['longc', 'longitude_of_center', d2r],
['x0', 'false_easting', toMeter],
['y0', 'false_northing', toMeter],
['long0', 'central_meridian', d2r],
['lat0', 'latitude_of_origin', d2r],
['lat0', 'standard_parallel_1', d2r],
['lat1', 'standard_parallel_1', d2r],
['lat2', 'standard_parallel_2', d2r],
['azimuth', 'Azimuth'],
['alpha', 'azimuth', d2r],
['srsCode', 'name']
];
list.forEach(renamer);
if (!wkt.long0 && wkt.longc && (wkt.projName === 'Albers_Conic_Equal_Area' || wkt.projName === 'Lambert_Azimuthal_Equal_Area')) {
wkt.long0 = wkt.longc;
}
if (!wkt.lat_ts && wkt.lat1 && (wkt.projName === 'Stereographic_South_Pole' || wkt.projName === 'Polar Stereographic (variant B)')) {
wkt.lat0 = d2r(wkt.lat1 > 0 ? 90 : -90);
wkt.lat_ts = wkt.lat1;
} else if (!wkt.lat_ts && wkt.lat0 && wkt.projName === 'Polar_Stereographic') {
wkt.lat_ts = wkt.lat0;
wkt.lat0 = d2r(wkt.lat0 > 0 ? 90 : -90);
}
}
function wkt(wkt) {
var lisp = parseString(wkt);
var type = lisp.shift();
var name = lisp.shift();
lisp.unshift(['name', name]);
lisp.unshift(['type', type]);
var obj = {};
sExpr(lisp, obj);
cleanWKT(obj);
return obj;
}
function defs(name) {
/*global console*/
var that = this;
if (arguments.length === 2) {
var def = arguments[1];
if (typeof def === 'string') {
if (def.charAt(0) === '+') {
defs[name] = projStr(arguments[1]);
}
else {
defs[name] = wkt(arguments[1]);
}
} else {
defs[name] = def;
}
}
else if (arguments.length === 1) {
if (Array.isArray(name)) {
return name.map(function(v) {
if (Array.isArray(v)) {
defs.apply(that, v);
}
else {
defs(v);
}
});
}
else if (typeof name === 'string') {
if (name in defs) {
return defs[name];
}
}
else if ('EPSG' in name) {
defs['EPSG:' + name.EPSG] = name;
}
else if ('ESRI' in name) {
defs['ESRI:' + name.ESRI] = name;
}
else if ('IAU2000' in name) {
defs['IAU2000:' + name.IAU2000] = name;
}
else {
console.log(name);
}
return;
}
}
globals(defs);
function testObj(code){
return typeof code === 'string';
}
function testDef(code){
return code in defs;
}
var codeWords = ['PROJECTEDCRS', 'PROJCRS', 'GEOGCS','GEOCCS','PROJCS','LOCAL_CS', 'GEODCRS', 'GEODETICCRS', 'GEODETICDATUM', 'ENGCRS', 'ENGINEERINGCRS'];
function testWKT(code){
return codeWords.some(function (word) {
return code.indexOf(word) > -1;
});
}
var codes = ['3857', '900913', '3785', '102113'];
function checkMercator(item) {
var auth = match(item, 'authority');
if (!auth) {
return;
}
var code = match(auth, 'epsg');
return code && codes.indexOf(code) > -1;
}
function checkProjStr(item) {
var ext = match(item, 'extension');
if (!ext) {
return;
}
return match(ext, 'proj4');
}
function testProj(code){
return code[0] === '+';
}
function parse(code){
if (testObj(code)) {
//check to see if this is a WKT string
if (testDef(code)) {
return defs[code];
}
if (testWKT(code)) {
var out = wkt(code);
// test of spetial case, due to this being a very common and often malformed
if (checkMercator(out)) {
return defs['EPSG:3857'];
}
var maybeProjStr = checkProjStr(out);
if (maybeProjStr) {
return projStr(maybeProjStr);
}
return out;
}
if (testProj(code)) {
return projStr(code);
}
}else {
return code;
}
}
function extend(destination, source) {
destination = destination || {};
var value, property;
if (!source) {
return destination;
}
for (property in source) {
value = source[property];
if (value !== undefined) {
destination[property] = value;
}
}
return destination;
}
function msfnz(eccent, sinphi, cosphi) {
var con = eccent * sinphi;
return cosphi / (Math.sqrt(1 - con * con));
}
function sign(x) {
return x<0 ? -1 : 1;
}
function adjust_lon(x) {
return (Math.abs(x) <= SPI) ? x : (x - (sign(x) * TWO_PI));
}
function tsfnz(eccent, phi, sinphi) {
var con = eccent * sinphi;
var com = 0.5 * eccent;
con = Math.pow(((1 - con) / (1 + con)), com);
return (Math.tan(0.5 * (HALF_PI - phi)) / con);
}
function phi2z(eccent, ts) {
var eccnth = 0.5 * eccent;
var con, dphi;
var phi = HALF_PI - 2 * Math.atan(ts);
for (var i = 0; i <= 15; i++) {
con = eccent * Math.sin(phi);
dphi = HALF_PI - 2 * Math.atan(ts * (Math.pow(((1 - con) / (1 + con)), eccnth))) - phi;
phi += dphi;
if (Math.abs(dphi) <= 0.0000000001) {
return phi;
}
}
//console.log("phi2z has NoConvergence");
return -9999;
}
function init$w() {
var con = this.b / this.a;
this.es = 1 - con * con;
if(!('x0' in this)){
this.x0 = 0;
}
if(!('y0' in this)){
this.y0 = 0;
}
this.e = Math.sqrt(this.es);
if (this.lat_ts) {
if (this.sphere) {
this.k0 = Math.cos(this.lat_ts);
}
else {
this.k0 = msfnz(this.e, Math.sin(this.lat_ts), Math.cos(this.lat_ts));
}
}
else {
if (!this.k0) {
if (this.k) {
this.k0 = this.k;
}
else {
this.k0 = 1;
}
}
}
}
/* Mercator forward equations--mapping lat,long to x,y
--------------------------------------------------*/
function forward$u(p) {
var lon = p.x;
var lat = p.y;
// convert to radians
if (lat * R2D > 90 && lat * R2D < -90 && lon * R2D > 180 && lon * R2D < -180) {
return null;
}
var x, y;
if (Math.abs(Math.abs(lat) - HALF_PI) <= EPSLN) {
return null;
}
else {
if (this.sphere) {
x = this.x0 + this.a * this.k0 * adjust_lon(lon - this.long0);
y = this.y0 + this.a * this.k0 * Math.log(Math.tan(FORTPI + 0.5 * lat));
}
else {
var sinphi = Math.sin(lat);
var ts = tsfnz(this.e, lat, sinphi);
x = this.x0 + this.a * this.k0 * adjust_lon(lon - this.long0);
y = this.y0 - this.a * this.k0 * Math.log(ts);
}
p.x = x;
p.y = y;
return p;
}
}
/* Mercator inverse equations--mapping x,y to lat/long
--------------------------------------------------*/
function inverse$u(p) {
var x = p.x - this.x0;
var y = p.y - this.y0;
var lon, lat;
if (this.sphere) {
lat = HALF_PI - 2 * Math.atan(Math.exp(-y / (this.a * this.k0)));
}
else {
var ts = Math.exp(-y / (this.a * this.k0));
lat = phi2z(this.e, ts);
if (lat === -9999) {
return null;
}
}
lon = adjust_lon(this.long0 + x / (this.a * this.k0));
p.x = lon;
p.y = lat;
return p;
}
var names$w = ["Mercator", "Popular Visualisation Pseudo Mercator", "Mercator_1SP", "Mercator_Auxiliary_Sphere", "merc"];
var merc = {
init: init$w,
forward: forward$u,
inverse: inverse$u,
names: names$w
};
function init$v() {
//no-op for longlat
}
function identity(pt) {
return pt;
}
var names$v = ["longlat", "identity"];
var longlat = {
init: init$v,
forward: identity,
inverse: identity,
names: names$v
};
var projs = [merc, longlat];
var names$u = {};
var projStore = [];
function add(proj, i) {
var len = projStore.length;
if (!proj.names) {
console.log(i);
return true;
}
projStore[len] = proj;
proj.names.forEach(function(n) {
names$u[n.toLowerCase()] = len;
});
return this;
}
function get(name) {
if (!name) {
return false;
}
var n = name.toLowerCase();
if (typeof names$u[n] !== 'undefined' && projStore[names$u[n]]) {
return projStore[names$u[n]];
}
}
function start() {
projs.forEach(add);
}
var projections = {
start: start,
add: add,
get: get
};
var exports$2 = {};
exports$2.MERIT = {
a: 6378137.0,
rf: 298.257,
ellipseName: "MERIT 1983"
};
exports$2.SGS85 = {
a: 6378136.0,
rf: 298.257,
ellipseName: "Soviet Geodetic System 85"
};
exports$2.GRS80 = {
a: 6378137.0,
rf: 298.257222101,
ellipseName: "GRS 1980(IUGG, 1980)"
};
exports$2.IAU76 = {
a: 6378140.0,
rf: 298.257,
ellipseName: "IAU 1976"
};
exports$2.airy = {
a: 6377563.396,
b: 6356256.910,
ellipseName: "Airy 1830"
};
exports$2.APL4 = {
a: 6378137,
rf: 298.25,
ellipseName: "Appl. Physics. 1965"
};
exports$2.NWL9D = {
a: 6378145.0,
rf: 298.25,
ellipseName: "Naval Weapons Lab., 1965"
};
exports$2.mod_airy = {
a: 6377340.189,
b: 6356034.446,
ellipseName: "Modified Airy"
};
exports$2.andrae = {
a: 6377104.43,
rf: 300.0,
ellipseName: "Andrae 1876 (Den., Iclnd.)"
};
exports$2.aust_SA = {
a: 6378160.0,
rf: 298.25,
ellipseName: "Australian Natl & S. Amer. 1969"
};
exports$2.GRS67 = {
a: 6378160.0,
rf: 298.2471674270,
ellipseName: "GRS 67(IUGG 1967)"
};
exports$2.bessel = {
a: 6377397.155,
rf: 299.1528128,
ellipseName: "Bessel 1841"
};
exports$2.bess_nam = {
a: 6377483.865,
rf: 299.1528128,
ellipseName: "Bessel 1841 (Namibia)"
};
exports$2.clrk66 = {
a: 6378206.4,
b: 6356583.8,
ellipseName: "Clarke 1866"
};
exports$2.clrk80 = {
a: 6378249.145,
rf: 293.4663,
ellipseName: "Clarke 1880 mod."
};
exports$2.clrk80ign = {
a: 6378249.2,
b: 6356515,
rf: 293.4660213,
ellipseName: "Clarke 1880 (IGN)"
};
exports$2.clrk58 = {
a: 6378293.645208759,
rf: 294.2606763692654,
ellipseName: "Clarke 1858"
};
exports$2.CPM = {
a: 6375738.7,
rf: 334.29,
ellipseName: "Comm. des Poids et Mesures 1799"
};
exports$2.delmbr = {
a: 6376428.0,
rf: 311.5,
ellipseName: "Delambre 1810 (Belgium)"
};
exports$2.engelis = {
a: 6378136.05,
rf: 298.2566,
ellipseName: "Engelis 1985"
};
exports$2.evrst30 = {
a: 6377276.345,
rf: 300.8017,
ellipseName: "Everest 1830"
};
exports$2.evrst48 = {
a: 6377304.063,
rf: 300.8017,
ellipseName: "Everest 1948"
};
exports$2.evrst56 = {
a: 6377301.243,
rf: 300.8017,
ellipseName: "Everest 1956"
};
exports$2.evrst69 = {
a: 6377295.664,
rf: 300.8017,
ellipseName: "Everest 1969"
};
exports$2.evrstSS = {
a: 6377298.556,
rf: 300.8017,
ellipseName: "Everest (Sabah & Sarawak)"
};
exports$2.fschr60 = {
a: 6378166.0,
rf: 298.3,
ellipseName: "Fischer (Mercury Datum) 1960"
};
exports$2.fschr60m = {
a: 6378155.0,
rf: 298.3,
ellipseName: "Fischer 1960"
};
exports$2.fschr68 = {
a: 6378150.0,
rf: 298.3,
ellipseName: "Fischer 1968"
};
exports$2.helmert = {
a: 6378200.0,
rf: 298.3,
ellipseName: "Helmert 1906"
};
exports$2.hough = {
a: 6378270.0,
rf: 297.0,
ellipseName: "Hough"
};
exports$2.intl = {
a: 6378388.0,
rf: 297.0,
ellipseName: "International 1909 (Hayford)"
};
exports$2.kaula = {
a: 6378163.0,
rf: 298.24,
ellipseName: "Kaula 1961"
};
exports$2.lerch = {
a: 6378139.0,
rf: 298.257,
ellipseName: "Lerch 1979"
};
exports$2.mprts = {
a: 6397300.0,
rf: 191.0,
ellipseName: "Maupertius 1738"
};
exports$2.new_intl = {
a: 6378157.5,
b: 6356772.2,
ellipseName: "New International 1967"
};
exports$2.plessis = {
a: 6376523.0,
rf: 6355863.0,
ellipseName: "Plessis 1817 (France)"
};
exports$2.krass = {
a: 6378245.0,
rf: 298.3,
ellipseName: "Krassovsky, 1942"
};
exports$2.SEasia = {
a: 6378155.0,
b: 6356773.3205,
ellipseName: "Southeast Asia"
};
exports$2.walbeck = {
a: 6376896.0,
b: 6355834.8467,
ellipseName: "Walbeck"
};
exports$2.WGS60 = {
a: 6378165.0,
rf: 298.3,
ellipseName: "WGS 60"
};
exports$2.WGS66 = {
a: 6378145.0,
rf: 298.25,
ellipseName: "WGS 66"
};
exports$2.WGS7 = {
a: 6378135.0,
rf: 298.26,
ellipseName: "WGS 72"
};
var WGS84 = exports$2.WGS84 = {
a: 6378137.0,
rf: 298.257223563,
ellipseName: "WGS 84"
};
exports$2.sphere = {
a: 6370997.0,
b: 6370997.0,
ellipseName: "Normal Sphere (r=6370997)"
};
function eccentricity(a, b, rf, R_A) {
var a2 = a * a; // used in geocentric
var b2 = b * b; // used in geocentric
var es = (a2 - b2) / a2; // e ^ 2
var e = 0;
if (R_A) {
a *= 1 - es * (SIXTH + es * (RA4 + es * RA6));
a2 = a * a;
es = 0;
} else {
e = Math.sqrt(es); // eccentricity
}
var ep2 = (a2 - b2) / b2; // used in geocentric
return {
es: es,
e: e,
ep2: ep2
};
}
function sphere(a, b, rf, ellps, sphere) {
if (!a) { // do we have an ellipsoid?
var ellipse = match(exports$2, ellps);
if (!ellipse) {
ellipse = WGS84;
}
a = ellipse.a;
b = ellipse.b;
rf = ellipse.rf;
}
if (rf && !b) {
b = (1.0 - 1.0 / rf) * a;
}
if (rf === 0 || Math.abs(a - b) < EPSLN) {
sphere = true;
b = a;
}
return {
a: a,
b: b,
rf: rf,
sphere: sphere
};
}
var exports$1 = {};
exports$1.wgs84 = {
towgs84: "0,0,0",
ellipse: "WGS84",
datumName: "WGS84"
};
exports$1.ch1903 = {
towgs84: "674.374,15.056,405.346",
ellipse: "bessel",
datumName: "swiss"
};
exports$1.ggrs87 = {
towgs84: "-199.87,74.79,246.62",
ellipse: "GRS80",
datumName: "Greek_Geodetic_Reference_System_1987"
};
exports$1.nad83 = {
towgs84: "0,0,0",
ellipse: "GRS80",
datumName: "North_American_Datum_1983"
};
exports$1.nad27 = {
nadgrids: "@conus,@alaska,@ntv2_0.gsb,@ntv1_can.dat",
ellipse: "clrk66",
datumName: "North_American_Datum_1927"
};
exports$1.potsdam = {
towgs84: "598.1,73.7,418.2,0.202,0.045,-2.455,6.7",
ellipse: "bessel",
datumName: "Potsdam Rauenberg 1950 DHDN"
};
exports$1.carthage = {
towgs84: "-263.0,6.0,431.0",
ellipse: "clark80",
datumName: "Carthage 1934 Tunisia"
};
exports$1.hermannskogel = {
towgs84: "577.326,90.129,463.919,5.137,1.474,5.297,2.4232",
ellipse: "bessel",
datumName: "Hermannskogel"
};
exports$1.militargeographische_institut = {
towgs84: "577.326,90.129,463.919,5.137,1.474,5.297,2.4232",
ellipse: "bessel",
datumName: "Militar-Geographische Institut"
};
exports$1.osni52 = {
towgs84: "482.530,-130.596,564.557,-1.042,-0.214,-0.631,8.15",
ellipse: "airy",
datumName: "Irish National"
};
exports$1.ire65 = {
towgs84: "482.530,-130.596,564.557,-1.042,-0.214,-0.631,8.15",
ellipse: "mod_airy",
datumName: "Ireland 1965"
};
exports$1.rassadiran = {
towgs84: "-133.63,-157.5,-158.62",
ellipse: "intl",
datumName: "Rassadiran"
};
exports$1.nzgd49 = {
towgs84: "59.47,-5.04,187.44,0.47,-0.1,1.024,-4.5993",
ellipse: "intl",
datumName: "New Zealand Geodetic Datum 1949"
};
exports$1.osgb36 = {
towgs84: "446.448,-125.157,542.060,0.1502,0.2470,0.8421,-20.4894",
ellipse: "airy",
datumName: "Airy 1830"
};
exports$1.s_jtsk = {
towgs84: "589,76,480",
ellipse: 'bessel',
datumName: 'S-JTSK (Ferro)'
};
exports$1.beduaram = {
towgs84: '-106,-87,188',
ellipse: 'clrk80',
datumName: 'Beduaram'
};
exports$1.gunung_segara = {
towgs84: '-403,684,41',
ellipse: 'bessel',
datumName: 'Gunung Segara Jakarta'
};
exports$1.rnb72 = {
towgs84: "106.869,-52.2978,103.724,-0.33657,0.456955,-1.84218,1",
ellipse: "intl",
datumName: "Reseau National Belge 1972"
};
function datum(datumCode, datum_params, a, b, es, ep2, nadgrids) {
var out = {};
if (datumCode === undefined || datumCode === 'none') {
out.datum_type = PJD_NODATUM;
} else {
out.datum_type = PJD_WGS84;
}
if (datum_params) {
out.datum_params = datum_params.map(parseFloat);
if (out.datum_params[0] !== 0 || out.datum_params[1] !== 0 || out.datum_params[2] !== 0) {
out.datum_type = PJD_3PARAM;
}
if (out.datum_params.length > 3) {
if (out.datum_params[3] !== 0 || out.datum_params[4] !== 0 || out.datum_params[5] !== 0 || out.datum_params[6] !== 0) {
out.datum_type = PJD_7PARAM;
out.datum_params[3] *= SEC_TO_RAD;
out.datum_params[4] *= SEC_TO_RAD;
out.datum_params[5] *= SEC_TO_RAD;
out.datum_params[6] = (out.datum_params[6] / 1000000.0) + 1.0;
}
}
}
if (nadgrids) {
out.datum_type = PJD_GRIDSHIFT;
out.grids = nadgrids;
}
out.a = a; //datum object also uses these values
out.b = b;
out.es = es;
out.ep2 = ep2;
return out;
}
/**
* Resources for details of NTv2 file formats:
* - https://web.archive.org/web/20140127204822if_/http://www.mgs.gov.on.ca:80/stdprodconsume/groups/content/@mgs/@iandit/documents/resourcelist/stel02_047447.pdf
* - http://mimaka.com/help/gs/html/004_NTV2%20Data%20Format.htm
*/
var loadedNadgrids = {};
/**
* Load a binary NTv2 file (.gsb) to a key that can be used in a proj string like +nadgrids=<key>. Pass the NTv2 file
* as an ArrayBuffer.
*/
function nadgrid(key, data) {
var view = new DataView(data);
var isLittleEndian = detectLittleEndian(view);
var header = readHeader(view, isLittleEndian);
var subgrids = readSubgrids(view, header, isLittleEndian);
var nadgrid = {header: header, subgrids: subgrids};
loadedNadgrids[key] = nadgrid;
return nadgrid;
}
/**
* Given a proj4 value for nadgrids, return an array of loaded grids
*/
function getNadgrids(nadgrids) {
// Format details: http://proj.maptools.org/gen_parms.html
if (nadgrids === undefined) { return null; }
var grids = nadgrids.split(',');
return grids.map(parseNadgridString);
}
function parseNadgridString(value) {
if (value.length === 0) {
return null;
}
var optional = value[0] === '@';
if (optional) {
value = value.slice(1);
}
if (value === 'null') {
return {name: 'null', mandatory: !optional, grid: null, isNull: true};
}
return {
name: value,
mandatory: !optional,
grid: loadedNadgrids[value] || null,
isNull: false
};
}
function secondsToRadians(seconds) {
return (seconds / 3600) * Math.PI / 180;
}
function detectLittleEndian(view) {
var nFields = view.getInt32(8, false);
if (nFields === 11) {
return false;
}
nFields = view.getInt32(8, true);
if (nFields !== 11) {
console.warn('Failed to detect nadgrid endian-ness, defaulting to little-endian');
}
return true;
}
function readHeader(view, isLittleEndian) {
return {
nFields: view.getInt32(8, isLittleEndian),
nSubgridFields: view.getInt32(24, isLittleEndian),
nSubgrids: view.getInt32(40, isLittleEndian),
shiftType: decodeString(view, 56, 56 + 8).trim(),
fromSemiMajorAxis: view.getFloat64(120, isLittleEndian),
fromSemiMinorAxis: view.getFloat64(136, isLittleEndian),
toSemiMajorAxis: view.getFloat64(152, isLittleEndian),
toSemiMinorAxis: view.getFloat64(168, isLittleEndian),
};
}
function decodeString(view, start, end) {
return String.fromCharCode.apply(null, new Uint8Array(view.buffer.slice(start, end)));
}
function readSubgrids(view, header, isLittleEndian) {
var gridOffset = 176;
var grids = [];
for (var i = 0; i < header.nSubgrids; i++) {
var subHeader = readGridHeader(view, gridOffset, isLittleEndian);
var nodes = readGridNodes(view, gridOffset, subHeader, isLittleEndian);
var lngColumnCount = Math.round(
1 + (subHeader.upperLongitude - subHeader.lowerLongitude) / subHeader.longitudeInterval);
var latColumnCount = Math.round(
1 + (subHeader.upperLatitude - subHeader.lowerLatitude) / subHeader.latitudeInterval);
// Proj4 operates on radians whereas the coordinates are in seconds in the grid
grids.push({
ll: [secondsToRadians(subHeader.lowerLongitude), secondsToRadians(subHeader.lowerLatitude)],
del: [secondsToRadians(subHeader.longitudeInterval), secondsToRadians(subHeader.latitudeInterval)],
lim: [lngColumnCount, latColumnCount],
count: subHeader.gridNodeCount,
cvs: mapNodes(nodes)
});
gridOffset += 176 + subHeader.gridNodeCount * 16;
}
return grids;
}
function mapNodes(nodes) {
return nodes.map(function (r) {return [secondsToRadians(r.longitudeShift), secondsToRadians(r.latitudeShift)];});
}
function readGridHeader(view, offset, isLittleEndian) {
return {
name: decodeString(view, offset + 8, offset + 16).trim(),
parent: decodeString(view, offset + 24, offset + 24 + 8).trim(),
lowerLatitude: view.getFloat64(offset + 72, isLittleEndian),
upperLatitude: view.getFloat64(offset + 88, isLittleEndian),
lowerLongitude: view.getFloat64(offset + 104, isLittleEndian),
upperLongitude: view.getFloat64(offset + 120, isLittleEndian),
latitudeInterval: view.getFloat64(offset + 136, isLittleEndian),
longitudeInterval: view.getFloat64(offset + 152, isLittleEndian),
gridNodeCount: view.getInt32(offset + 168, isLittleEndian)
};
}
function readGridNodes(view, offset, gridHeader, isLittleEndian) {
var nodesOffset = offset + 176;
var gridRecordLength = 16;
var gridShiftRecords = [];
for (var i = 0; i < gridHeader.gridNodeCount; i++) {
var record = {
latitudeShift: view.getFloat32(nodesOffset + i * gridRecordLength, isLittleEndian),
longitudeShift: view.getFloat32(nodesOffset + i * gridRecordLength + 4, isLittleEndian),
latitudeAccuracy: view.getFloat32(nodesOffset + i * gridRecordLength + 8, isLittleEndian),
longitudeAccuracy: view.getFloat32(nodesOffset + i * gridRecordLength + 12, isLittleEndian),
};
gridShiftRecords.push(record);
}
return gridShiftRecords;
}
function Projection(srsCode,callback) {
if (!(this instanceof Projection)) {
return new Projection(srsCode);
}
callback = callback || function(error){
if(error){
throw error;
}
};
var json = parse(srsCode);
if(typeof json !== 'object'){
callback(srsCode);
return;
}
var ourProj = Projection.projections.get(json.projName);
if(!ourProj){
callback(srsCode);
return;
}
if (json.datumCode && json.datumCode !== 'none') {
var datumDef = match(exports$1, json.datumCode);
if (datumDef) {
json.datum_params = json.datum_params || (datumDef.towgs84 ? datumDef.towgs84.split(',') : null);
json.ellps = datumDef.ellipse;
json.datumName = datumDef.datumName ? datumDef.datumName : json.datumCode;
}
}
json.k0 = json.k0 || 1.0;
json.axis = json.axis || 'enu';
json.ellps = json.ellps || 'wgs84';
json.lat1 = json.lat1 || json.lat0; // Lambert_Conformal_Conic_1SP, for example, needs this
var sphere_ = sphere(json.a, json.b, json.rf, json.ellps, json.sphere);
var ecc = eccentricity(sphere_.a, sphere_.b, sphere_.rf, json.R_A);
var nadgrids = getNadgrids(json.nadgrids);
var datumObj = json.datum || datum(json.datumCode, json.datum_params, sphere_.a, sphere_.b, ecc.es, ecc.ep2,
nadgrids);
extend(this, json); // transfer everything over from the projection because we don't know what we'll need
extend(this, ourProj); // transfer all the methods from the projection
// copy the 4 things over we calculated in deriveConstants.sphere
this.a = sphere_.a;
this.b = sphere_.b;
this.rf = sphere_.rf;
this.sphere = sphere_.sphere;
// copy the 3 things we calculated in deriveConstants.eccentricity
this.es = ecc.es;
this.e = ecc.e;
this.ep2 = ecc.ep2;
// add in the datum object
this.datum = datumObj;
// init the projection
this.init();
// legecy callback from back in the day when it went to spatialreference.org
callback(null, this);
}
Projection.projections = projections;
Projection.projections.start();
function compareDatums(source, dest) {
if (source.datum_type !== dest.datum_type) {
return false; // false, datums are not equal
} else if (source.a !== dest.a || Math.abs(source.es - dest.es) > 0.000000000050) {
// the tolerance for es is to ensure that GRS80 and WGS84
// are considered identical
return false;
} else if (source.datum_type === PJD_3PARAM) {
return (source.datum_params[0] === dest.datum_params[0] && source.datum_params[1] === dest.datum_params[1] && source.datum_params[2] === dest.datum_params[2]);
} else if (source.datum_type === PJD_7PARAM) {
return (source.datum_params[0] === dest.datum_params[0] && source.datum_params[1] === dest.datum_params[1] && source.datum_params[2] === dest.datum_params[2] && source.datum_params[3] === dest.datum_params[3] && source.datum_params[4] === dest.datum_params[4] && source.datum_params[5] === dest.datum_params[5] && source.datum_params[6] === dest.datum_params[6]);
} else {
return true; // datums are equal
}
} // cs_compare_datums()
/*
* The function Convert_Geodetic_To_Geocentric converts geodetic coordinates
* (latitude, longitude, and height) to geocentric coordinates (X, Y, Z),
* according to the current ellipsoid parameters.
*
* Latitude : Geodetic latitude in radians (input)
* Longitude : Geodetic longitude in radians (input)
* Height : Geodetic height, in meters (input)
* X : Calculated Geocentric X coordinate, in meters (output)
* Y : Calculated Geocentric Y coordinate, in meters (output)
* Z : Calculated Geocentric Z coordinate, in meters (output)
*
*/
function geodeticToGeocentric(p, es, a) {
var Longitude = p.x;
var Latitude = p.y;
var Height = p.z ? p.z : 0; //Z value not always supplied
var Rn; /* Earth radius at location */
var Sin_Lat; /* Math.sin(Latitude) */
var Sin2_Lat; /* Square of Math.sin(Latitude) */
var Cos_Lat; /* Math.cos(Latitude) */
/*
** Don't blow up if Latitude is just a little out of the value
** range as it may just be a rounding issue. Also removed longitude
** test, it should be wrapped by Math.cos() and Math.sin(). NFW for PROJ.4, Sep/2001.
*/
if (Latitude < -HALF_PI && Latitude > -1.001 * HALF_PI) {
Latitude = -HALF_PI;
} else if (Latitude > HALF_PI && Latitude < 1.001 * HALF_PI) {
Latitude = HALF_PI;
} else if (Latitude < -HALF_PI) {
/* Latitude out of range */
//..reportError('geocent:lat out of range:' + Latitude);
return { x: -Infinity, y: -Infinity, z: p.z };
} else if (Latitude > HALF_PI) {
/* Latitude out of range */
return { x: Infinity, y: Infinity, z: p.z };
}
if (Longitude > Math.PI) {
Longitude -= (2 * Math.PI);
}
Sin_Lat = Math.sin(Latitude);
Cos_Lat = Math.cos(Latitude);
Sin2_Lat = Sin_Lat * Sin_Lat;
Rn = a / (Math.sqrt(1.0e0 - es * Sin2_Lat));
return {
x: (Rn + Height) * Cos_Lat * Math.cos(Longitude),
y: (Rn + Height) * Cos_Lat * Math.sin(Longitude),
z: ((Rn * (1 - es)) + Height) * Sin_Lat
};
} // cs_geodetic_to_geocentric()
function geocentricToGeodetic(p, es, a, b) {
/* local defintions and variables */
/* end-criterium of loop, accuracy of sin(Latitude) */
var genau = 1e-12;
var genau2 = (genau * genau);
var maxiter = 30;
var P; /* distance between semi-minor axis and location */
var RR; /* distance between center and location */
var CT; /* sin of geocentric latitude */
var ST; /* cos of geocentric latitude */
var RX;
var RK;
var RN; /* Earth radius at location */
var CPHI0; /* cos of start or old geodetic latitude in iterations */
var SPHI0; /* sin of start or old geodetic latitude in iterations */
var CPHI; /* cos of searched geodetic latitude */
var SPHI; /* sin of searched geodetic latitude */
var SDPHI; /* end-criterium: addition-theorem of sin(Latitude(iter)-Latitude(iter-1)) */
var iter; /* # of continous iteration, max. 30 is always enough (s.a.) */
var X = p.x;
var Y = p.y;
var Z = p.z ? p.z : 0.0; //Z value not always supplied
var Longitude;
var Latitude;
var Height;
P = Math.sqrt(X * X + Y * Y);
RR = Math.sqrt(X * X + Y * Y + Z * Z);
/* special cases for latitude and longitude */
if (P / a < genau) {
/* special case, if P=0. (X=0., Y=0.) */
Longitude = 0.0;
/* if (X,Y,Z)=(0.,0.,0.) then Height becomes semi-minor axis
* of ellipsoid (=center of mass), Latitude becomes PI/2 */
if (RR / a < genau) {
Latitude = HALF_PI;
Height = -b;
return {
x: p.x,
y: p.y,
z: p.z
};
}
} else {
/* ellipsoidal (geodetic) longitude
* interval: -PI < Longitude <= +PI */
Longitude = Math.atan2(Y, X);
}
/* --------------------------------------------------------------
* Following iterative algorithm was developped by
* "Institut for Erdmessung", University of Hannover, July 1988.
* Internet: www.ife.uni-hannover.de
* Iterative computation of CPHI,SPHI and Height.
* Iteration of CPHI and SPHI to 10**-12 radian resp.
* 2*10**-7 arcsec.
* --------------------------------------------------------------
*/
CT = Z / RR;
ST = P / RR;
RX = 1.0 / Math.sqrt(1.0 - es * (2.0 - es) * ST * ST);
CPHI0 = ST * (1.0 - es) * RX;
SPHI0 = CT * RX;
iter = 0;
/* loop to find sin(Latitude) resp. Latitude
* until |sin(Latitude(iter)-Latitude(iter-1))| < genau */
do {
iter++;
RN = a / Math.sqrt(1.0 - es * SPHI0 * SPHI0);
/* ellipsoidal (geodetic) height */
Height = P * CPHI0 + Z * SPHI0 - RN * (1.0 - es * SPHI0 * SPHI0);
RK = es * RN / (RN + Height);
RX = 1.0 / Math.sqrt(1.0 - RK * (2.0 - RK) * ST * ST);
CPHI = ST * (1.0 - RK) * RX;
SPHI = CT * RX;
SDPHI = SPHI * CPHI0 - CPHI * SPHI0;
CPHI0 = CPHI;
SPHI0 = SPHI;
}
while (SDPHI * SDPHI > genau2 && iter < maxiter);
/* ellipsoidal (geodetic) latitude */
Latitude = Math.atan(SPHI / Math.abs(CPHI));
return {
x: Longitude,
y: Latitude,
z: Height
};
} // cs_geocentric_to_geodetic()
/****************************************************************/
// pj_geocentic_to_wgs84( p )
// p = point to transform in geocentric coordinates (x,y,z)
/** point object, nothing fancy, just allows values to be
passed back and forth by reference rather than by value.
Other point classes may be used as long as they have
x and y properties, which will get modified in the transform method.
*/
function geocentricToWgs84(p, datum_type, datum_params) {
if (datum_type === PJD_3PARAM) {
// if( x[io] === HUGE_VAL )
// continue;
return {
x: p.x + datum_params[0],
y: p.y + datum_params[1],
z: p.z + datum_params[2],
};
} else if (datum_type === PJD_7PARAM) {
var Dx_BF = datum_params[0];
var Dy_BF = datum_params[1];
var Dz_BF = datum_params[2];
var Rx_BF = datum_params[3];
var Ry_BF = datum_params[4];
var Rz_BF = datum_params[5];
var M_BF = datum_params[6];
// if( x[io] === HUGE_VAL )
// continue;
return {
x: M_BF * (p.x - Rz_BF * p.y + Ry_BF * p.z) + Dx_BF,
y: M_BF * (Rz_BF * p.x + p.y - Rx_BF * p.z) + Dy_BF,
z: M_BF * (-Ry_BF * p.x + Rx_BF * p.y + p.z) + Dz_BF
};
}
} // cs_geocentric_to_wgs84
/****************************************************************/
// pj_geocentic_from_wgs84()
// coordinate system definition,
// point to transform in geocentric coordinates (x,y,z)
function geocentricFromWgs84(p, datum_type, datum_params) {
if (datum_type === PJD_3PARAM) {
//if( x[io] === HUGE_VAL )
// continue;
return {
x: p.x - datum_params[0],
y: p.y - datum_params[1],
z: p.z - datum_params[2],
};
} else if (datum_type === PJD_7PARAM) {
var Dx_BF = datum_params[0];
var Dy_BF = datum_params[1];
var Dz_BF = datum_params[2];
var Rx_BF = datum_params[3];
var Ry_BF = datum_params[4];
var Rz_BF = datum_params[5];
var M_BF = datum_params[6];
var x_tmp = (p.x - Dx_BF) / M_BF;
var y_tmp = (p.y - Dy_BF) / M_BF;
var z_tmp = (p.z - Dz_BF) / M_BF;
//if( x[io] === HUGE_VAL )
// continue;
return {
x: x_tmp + Rz_BF * y_tmp - Ry_BF * z_tmp,
y: -Rz_BF * x_tmp + y_tmp + Rx_BF * z_tmp,
z: Ry_BF * x_tmp - Rx_BF * y_tmp + z_tmp
};
} //cs_geocentric_from_wgs84()
}
function checkParams(type) {
return (type === PJD_3PARAM || type === PJD_7PARAM);
}
function datum_transform(source, dest, point) {
// Short cut if the datums are identical.
if (compareDatums(source, dest)) {
return point; // in this case, zero is sucess,
// whereas cs_compare_datums returns 1 to indicate TRUE
// confusing, should fix this
}
// Explicitly skip datum transform by setting 'datum=none' as parameter for either source or dest
if (source.datum_type === PJD_NODATUM || dest.datum_type === PJD_NODATUM) {
return point;
}
// If this datum requires grid shifts, then apply it to geodetic coordinates.
var source_a = source.a;
var source_es = source.es;
if (source.datum_type === PJD_GRIDSHIFT) {
var gridShiftCode = applyGridShift(source, false, point);
if (gridShiftCode !== 0) {
return undefined;
}
source_a = SRS_WGS84_SEMIMAJOR;
source_es = SRS_WGS84_ESQUARED;
}
var dest_a = dest.a;
var dest_b = dest.b;
var dest_es = dest.es;
if (dest.datum_type === PJD_GRIDSHIFT) {
dest_a = SRS_WGS84_SEMIMAJOR;
dest_b = SRS_WGS84_SEMIMINOR;
dest_es = SRS_WGS84_ESQUARED;
}
// Do we need to go through geocentric coordinates?
if (source_es === dest_es && source_a === dest_a && !checkParams(source.datum_type) && !checkParams(dest.datum_type)) {
return point;
}
// Convert to geocentric coordinates.
point = geodeticToGeocentric(point, source_es, source_a);
// Convert between datums
if (checkParams(source.datum_type)) {
point = geocentricToWgs84(point, source.datum_type, source.datum_params);
}
if (checkParams(dest.datum_type)) {
point = geocentricFromWgs84(point, dest.datum_type, dest.datum_params);
}
point = geocentricToGeodetic(point, dest_es, dest_a, dest_b);
if (dest.datum_type === PJD_GRIDSHIFT) {
var destGridShiftResult = applyGridShift(dest, true, point);
if (destGridShiftResult !== 0) {
return undefined;
}
}
return point;
}
function applyGridShift(source, inverse, point) {
if (source.grids === null || source.grids.length === 0) {
console.log('Grid shift grids not found');
return -1;
}
var input = {x: -point.x, y: point.y};
var output = {x: Number.NaN, y: Number.NaN};
var attemptedGrids = [];
outer:
for (var i = 0; i < source.grids.length; i++) {
var grid = source.grids[i];
attemptedGrids.push(grid.name);
if (grid.isNull) {
output = input;
break;
}
grid.mandatory;
if (grid.grid === null) {
if (grid.mandatory) {
console.log("Unable to find mandatory grid '" + grid.name + "'");
return -1;
}
continue;
}
var subgrids = grid.grid.subgrids;
for (var j = 0, jj = subgrids.length; j < jj; j++) {
var subgrid = subgrids[j];
// skip tables that don't match our point at all
var epsilon = (Math.abs(subgrid.del[1]) + Math.abs(subgrid.del[0])) / 10000.0;
var minX = subgrid.ll[0] - epsilon;
var minY = subgrid.ll[1] - epsilon;
var maxX = subgrid.ll[0] + (subgrid.lim[0] - 1) * subgrid.del[0] + epsilon;
var maxY = subgrid.ll[1] + (subgrid.lim[1] - 1) * subgrid.del[1] + epsilon;
if (minY > input.y || minX > input.x || maxY < input.y || maxX < input.x ) {
continue;
}
output = applySubgridShift(input, inverse, subgrid);
if (!isNaN(output.x)) {
break outer;
}
}
}
if (isNaN(output.x)) {
console.log("Failed to find a grid shift table for location '"+
-input.x * R2D + " " + input.y * R2D + " tried: '" + attemptedGrids + "'");
return -1;
}
point.x = -output.x;
point.y = output.y;
return 0;
}
function applySubgridShift(pin, inverse, ct) {
var val = {x: Number.NaN, y: Number.NaN};
if (isNaN(pin.x)) { return val; }
var tb = {x: pin.x, y: pin.y};
tb.x -= ct.ll[0];
tb.y -= ct.ll[1];
tb.x = adjust_lon(tb.x - Math.PI) + Math.PI;
var t = nadInterpolate(tb, ct);
if (inverse) {
if (isNaN(t.x)) {
return val;
}
t.x = tb.x - t.x;
t.y = tb.y - t.y;
var i = 9, tol = 1e-12;
var dif, del;
do {
del = nadInterpolate(t, ct);
if (isNaN(del.x)) {
console.log("Inverse grid shift iteration failed, presumably at grid edge. Using first approximation.");
break;
}
dif = {x: tb.x - (del.x + t.x), y: tb.y - (del.y + t.y)};
t.x += dif.x;
t.y += dif.y;
} while (i-- && Math.abs(dif.x) > tol && Math.abs(dif.y) > tol);
if (i < 0) {
console.log("Inverse grid shift iterator failed to converge.");
return val;
}
val.x = adjust_lon(t.x + ct.ll[0]);
val.y = t.y + ct.ll[1];
} else {
if (!isNaN(t.x)) {
val.x = pin.x + t.x;
val.y = pin.y + t.y;
}
}
return val;
}
function nadInterpolate(pin, ct) {
var t = {x: pin.x / ct.del[0], y: pin.y / ct.del[1]};
var indx = {x: Math.floor(t.x), y: Math.floor(t.y)};
var frct = {x: t.x - 1.0 * indx.x, y: t.y - 1.0 * indx.y};
var val= {x: Number.NaN, y: Number.NaN};
var inx;
if (indx.x < 0 || indx.x >= ct.lim[0]) {
return val;
}
if (indx.y < 0 || indx.y >= ct.lim[1]) {
return val;
}
inx = (indx.y * ct.lim[0]) + indx.x;
var f00 = {x: ct.cvs[inx][0], y: ct.cvs[inx][1]};
inx++;
var f10= {x: ct.cvs[inx][0], y: ct.cvs[inx][1]};
inx += ct.lim[0];
var f11 = {x: ct.cvs[inx][0], y: ct.cvs[inx][1]};
inx--;
var f01 = {x: ct.cvs[inx][0], y: ct.cvs[inx][1]};
var m11 = frct.x * frct.y, m10 = frct.x * (1.0 - frct.y),
m00 = (1.0 - frct.x) * (1.0 - frct.y), m01 = (1.0 - frct.x) * frct.y;
val.x = (m00 * f00.x + m10 * f10.x + m01 * f01.x + m11 * f11.x);
val.y = (m00 * f00.y + m10 * f10.y + m01 * f01.y + m11 * f11.y);
return val;
}
function adjust_axis(crs, denorm, point) {
var xin = point.x,
yin = point.y,
zin = point.z || 0.0;
var v, t, i;
var out = {};
for (i = 0; i < 3; i++) {
if (denorm && i === 2 && point.z === undefined) {
continue;
}
if (i === 0) {
v = xin;
if ("ew".indexOf(crs.axis[i]) !== -1) {
t = 'x';
} else {
t = 'y';
}
}
else if (i === 1) {
v = yin;
if ("ns".indexOf(crs.axis[i]) !== -1) {
t = 'y';
} else {
t = 'x';
}
}
else {
v = zin;
t = 'z';
}
switch (crs.axis[i]) {
case 'e':
out[t] = v;
break;
case 'w':
out[t] = -v;
break;
case 'n':
out[t] = v;
break;
case 's':
out[t] = -v;
break;
case 'u':
if (point[t] !== undefined) {
out.z = v;
}
break;
case 'd':
if (point[t] !== undefined) {
out.z = -v;
}
break;
default:
//console.log("ERROR: unknow axis ("+crs.axis[i]+") - check definition of "+crs.projName);
return null;
}
}
return out;
}
function common (array){
var out = {
x: array[0],
y: array[1]
};
if (array.length>2) {
out.z = array[2];
}
if (array.length>3) {
out.m = array[3];
}
return out;
}
function checkSanity (point) {
checkCoord(point.x);
checkCoord(point.y);
}
function checkCoord(num) {
if (typeof Number.isFinite === 'function') {
if (Number.isFinite(num)) {
return;
}
throw new TypeError('coordinates must be finite numbers');
}
if (typeof num !== 'number' || num !== num || !isFinite(num)) {
throw new TypeError('coordinates must be finite numbers');
}
}
function checkNotWGS(source, dest) {
return (
(source.datum.datum_type === PJD_3PARAM || source.datum.datum_type === PJD_7PARAM || source.datum.datum_type === PJD_GRIDSHIFT) && dest.datumCode !== 'WGS84') ||
((dest.datum.datum_type === PJD_3PARAM || dest.datum.datum_type === PJD_7PARAM || dest.datum.datum_type === PJD_GRIDSHIFT) && source.datumCode !== 'WGS84');
}
function transform(source, dest, point, enforceAxis) {
var wgs84;
if (Array.isArray(point)) {
point = common(point);
} else {
// Clone the point object so inputs don't get modified
point = {
x: point.x,
y: point.y,
z: point.z,
m: point.m
};
}
var hasZ = point.z !== undefined;
checkSanity(point);
// Workaround for datum shifts towgs84, if either source or destination projection is not wgs84
if (source.datum && dest.datum && checkNotWGS(source, dest)) {
wgs84 = new Projection('WGS84');
point = transform(source, wgs84, point, enforceAxis);
source = wgs84;
}
// DGR, 2010/11/12
if (enforceAxis && source.axis !== 'enu') {
point = adjust_axis(source, false, point);
}
// Transform source points to long/lat, if they aren't already.
if (source.projName === 'longlat') {
point = {
x: point.x * D2R$1,
y: point.y * D2R$1,
z: point.z || 0
};
} else {
if (source.to_meter) {
point = {
x: point.x * source.to_meter,
y: point.y * source.to_meter,
z: point.z || 0
};
}
point = source.inverse(point); // Convert Cartesian to longlat
if (!point) {
return;
}
}
// Adjust for the prime meridian if necessary
if (source.from_greenwich) {
point.x += source.from_greenwich;
}
// Convert datums if needed, and if possible.
point = datum_transform(source.datum, dest.datum, point);
if (!point) {
return;
}
// Adjust for the prime meridian if necessary
if (dest.from_greenwich) {
point = {
x: point.x - dest.from_greenwich,
y: point.y,
z: point.z || 0
};
}
if (dest.projName === 'longlat') {
// convert radians to decimal degrees
point = {
x: point.x * R2D,
y: point.y * R2D,
z: point.z || 0
};
} else { // else project
point = dest.forward(point);
if (dest.to_meter) {
point = {
x: point.x / dest.to_meter,
y: point.y / dest.to_meter,
z: point.z || 0
};
}
}
// DGR, 2010/11/12
if (enforceAxis && dest.axis !== 'enu') {
return adjust_axis(dest, true, point);
}
if (point && !hasZ) {
delete point.z;
}
return point;
}
var wgs84 = Projection('WGS84');
function transformer(from, to, coords, enforceAxis) {
var transformedArray, out, keys;
if (Array.isArray(coords)) {
transformedArray = transform(from, to, coords, enforceAxis) || {x: NaN, y: NaN};
if (coords.length > 2) {
if ((typeof from.name !== 'undefined' && from.name === 'geocent') || (typeof to.name !== 'undefined' && to.name === 'geocent')) {
if (typeof transformedArray.z === 'number') {
return [transformedArray.x, transformedArray.y, transformedArray.z].concat(coords.splice(3));
} else {
return [transformedArray.x, transformedArray.y, coords[2]].concat(coords.splice(3));
}
} else {
return [transformedArray.x, transformedArray.y].concat(coords.splice(2));
}
} else {
return [transformedArray.x, transformedArray.y];
}
} else {
out = transform(from, to, coords, enforceAxis);
keys = Object.keys(coords);
if (keys.length === 2) {
return out;
}
keys.forEach(function (key) {
if ((typeof from.name !== 'undefined' && from.name === 'geocent') || (typeof to.name !== 'undefined' && to.name === 'geocent')) {
if (key === 'x' || key === 'y' || key === 'z') {
return;
}
} else {
if (key === 'x' || key === 'y') {
return;
}
}
out[key] = coords[key];
});
return out;
}
}
function checkProj(item) {
if (item instanceof Projection) {
return item;
}
if (item.oProj) {
return item.oProj;
}
return Projection(item);
}
function proj4(fromProj, toProj, coord) {
fromProj = checkProj(fromProj);
var single = false;
var obj;
if (typeof toProj === 'undefined') {
toProj = fromProj;
fromProj = wgs84;
single = true;
} else if (typeof toProj.x !== 'undefined' || Array.isArray(toProj)) {
coord = toProj;
toProj = fromProj;
fromProj = wgs84;
single = true;
}
toProj = checkProj(toProj);
if (coord) {
return transformer(fromProj, toProj, coord);
} else {
obj = {
forward: function (coords, enforceAxis) {
return transformer(fromProj, toProj, coords, enforceAxis);
},
inverse: function (coords, enforceAxis) {
return transformer(toProj, fromProj, coords, enforceAxis);
}
};
if (single) {
obj.oProj = toProj;
}
return obj;
}
}
/**
* UTM zones are grouped, and assigned to one of a group of 6
* sets.
*
* {int} @private
*/
var NUM_100K_SETS = 6;
/**
* The column letters (for easting) of the lower left value, per
* set.
*
* {string} @private
*/
var SET_ORIGIN_COLUMN_LETTERS = 'AJSAJS';
/**
* The row letters (for northing) of the lower left value, per
* set.
*
* {string} @private
*/
var SET_ORIGIN_ROW_LETTERS = 'AFAFAF';
var A = 65; // A
var I = 73; // I
var O = 79; // O
var V = 86; // V
var Z = 90; // Z
var mgrs = {
forward: forward$t,
inverse: inverse$t,
toPoint: toPoint
};
/**
* Conversion of lat/lon to MGRS.
*
* @param {object} ll Object literal with lat and lon properties on a
* WGS84 ellipsoid.
* @param {int} accuracy Accuracy in digits (5 for 1 m, 4 for 10 m, 3 for
* 100 m, 2 for 1000 m or 1 for 10000 m). Optional, default is 5.
* @return {string} the MGRS string for the given location and accuracy.
*/
function forward$t(ll, accuracy) {
accuracy = accuracy || 5; // default accuracy 1m
return encode(LLtoUTM({
lat: ll[1],
lon: ll[0]
}), accuracy);
}
/**
* Conversion of MGRS to lat/lon.
*
* @param {string} mgrs MGRS string.
* @return {array} An array with left (longitude), bottom (latitude), right
* (longitude) and top (latitude) values in WGS84, representing the
* bounding box for the provided MGRS reference.
*/
function inverse$t(mgrs) {
var bbox = UTMtoLL(decode(mgrs.toUpperCase()));
if (bbox.lat && bbox.lon) {
return [bbox.lon, bbox.lat, bbox.lon, bbox.lat];
}
return [bbox.left, bbox.bottom, bbox.right, bbox.top];
}
function toPoint(mgrs) {
var bbox = UTMtoLL(decode(mgrs.toUpperCase()));
if (bbox.lat && bbox.lon) {
return [bbox.lon, bbox.lat];
}
return [(bbox.left + bbox.right) / 2, (bbox.top + bbox.bottom) / 2];
}/**
* Conversion from degrees to radians.
*
* @private
* @param {number} deg the angle in degrees.
* @return {number} the angle in radians.
*/
function degToRad(deg) {
return (deg * (Math.PI / 180.0));
}
/**
* Conversion from radians to degrees.
*
* @private
* @param {number} rad the angle in radians.
* @return {number} the angle in degrees.
*/
function radToDeg(rad) {
return (180.0 * (rad / Math.PI));
}
/**
* Converts a set of Longitude and Latitude co-ordinates to UTM
* using the WGS84 ellipsoid.
*
* @private
* @param {object} ll Object literal with lat and lon properties
* representing the WGS84 coordinate to be converted.
* @return {object} Object literal containing the UTM value with easting,
* northing, zoneNumber and zoneLetter properties, and an optional
* accuracy property in digits. Returns null if the conversion failed.
*/
function LLtoUTM(ll) {
var Lat = ll.lat;
var Long = ll.lon;
var a = 6378137.0; //ellip.radius;
var eccSquared = 0.00669438; //ellip.eccsq;
var k0 = 0.9996;
var LongOrigin;
var eccPrimeSquared;
var N, T, C, A, M;
var LatRad = degToRad(Lat);
var LongRad = degToRad(Long);
var LongOriginRad;
var ZoneNumber;
// (int)
ZoneNumber = Math.floor((Long + 180) / 6) + 1;
//Make sure the longitude 180.00 is in Zone 60
if (Long === 180) {
ZoneNumber = 60;
}
// Special zone for Norway
if (Lat >= 56.0 && Lat < 64.0 && Long >= 3.0 && Long < 12.0) {
ZoneNumber = 32;
}
// Special zones for Svalbard
if (Lat >= 72.0 && Lat < 84.0) {
if (Long >= 0.0 && Long < 9.0) {
ZoneNumber = 31;
}
else if (Long >= 9.0 && Long < 21.0) {
ZoneNumber = 33;
}
else if (Long >= 21.0 && Long < 33.0) {
ZoneNumber = 35;
}
else if (Long >= 33.0 && Long < 42.0) {
ZoneNumber = 37;
}
}
LongOrigin = (ZoneNumber - 1) * 6 - 180 + 3; //+3 puts origin
// in middle of
// zone
LongOriginRad = degToRad(LongOrigin);
eccPrimeSquared = (eccSquared) / (1 - eccSquared);
N = a / Math.sqrt(1 - eccSquared * Math.sin(LatRad) * Math.sin(LatRad));
T = Math.tan(LatRad) * Math.tan(LatRad);
C = eccPrimeSquared * Math.cos(LatRad) * Math.cos(LatRad);
A = Math.cos(LatRad) * (LongRad - LongOriginRad);
M = a * ((1 - eccSquared / 4 - 3 * eccSquared * eccSquared / 64 - 5 * eccSquared * eccSquared * eccSquared / 256) * LatRad - (3 * eccSquared / 8 + 3 * eccSquared * eccSquared / 32 + 45 * eccSquared * eccSquared * eccSquared / 1024) * Math.sin(2 * LatRad) + (15 * eccSquared * eccSquared / 256 + 45 * eccSquared * eccSquared * eccSquared / 1024) * Math.sin(4 * LatRad) - (35 * eccSquared * eccSquared * eccSquared / 3072) * Math.sin(6 * LatRad));
var UTMEasting = (k0 * N * (A + (1 - T + C) * A * A * A / 6.0 + (5 - 18 * T + T * T + 72 * C - 58 * eccPrimeSquared) * A * A * A * A * A / 120.0) + 500000.0);
var UTMNorthing = (k0 * (M + N * Math.tan(LatRad) * (A * A / 2 + (5 - T + 9 * C + 4 * C * C) * A * A * A * A / 24.0 + (61 - 58 * T + T * T + 600 * C - 330 * eccPrimeSquared) * A * A * A * A * A * A / 720.0)));
if (Lat < 0.0) {
UTMNorthing += 10000000.0; //10000000 meter offset for
// southern hemisphere
}
return {
northing: Math.round(UTMNorthing),
easting: Math.round(UTMEasting),
zoneNumber: ZoneNumber,
zoneLetter: getLetterDesignator(Lat)
};
}
/**
* Converts UTM coords to lat/long, using the WGS84 ellipsoid. This is a convenience
* class where the Zone can be specified as a single string eg."60N" which
* is then broken down into the ZoneNumber and ZoneLetter.
*
* @private
* @param {object} utm An object literal with northing, easting, zoneNumber
* and zoneLetter properties. If an optional accuracy property is
* provided (in meters), a bounding box will be returned instead of
* latitude and longitude.
* @return {object} An object literal containing either lat and lon values
* (if no accuracy was provided), or top, right, bottom and left values
* for the bounding box calculated according to the provided accuracy.
* Returns null if the conversion failed.
*/
function UTMtoLL(utm) {
var UTMNorthing = utm.northing;
var UTMEasting = utm.easting;
var zoneLetter = utm.zoneLetter;
var zoneNumber = utm.zoneNumber;
// check the ZoneNummber is valid
if (zoneNumber < 0 || zoneNumber > 60) {
return null;
}
var k0 = 0.9996;
var a = 6378137.0; //ellip.radius;
var eccSquared = 0.00669438; //ellip.eccsq;
var eccPrimeSquared;
var e1 = (1 - Math.sqrt(1 - eccSquared)) / (1 + Math.sqrt(1 - eccSquared));
var N1, T1, C1, R1, D, M;
var LongOrigin;
var mu, phi1Rad;
// remove 500,000 meter offset for longitude
var x = UTMEasting - 500000.0;
var y = UTMNorthing;
// We must know somehow if we are in the Northern or Southern
// hemisphere, this is the only time we use the letter So even
// if the Zone letter isn't exactly correct it should indicate
// the hemisphere correctly
if (zoneLetter < 'N') {
y -= 10000000.0; // remove 10,000,000 meter offset used
// for southern hemisphere
}
// There are 60 zones with zone 1 being at West -180 to -174
LongOrigin = (zoneNumber - 1) * 6 - 180 + 3; // +3 puts origin
// in middle of
// zone
eccPrimeSquared = (eccSquared) / (1 - eccSquared);
M = y / k0;
mu = M / (a * (1 - eccSquared / 4 - 3 * eccSquared * eccSquared / 64 - 5 * eccSquared * eccSquared * eccSquared / 256));
phi1Rad = mu + (3 * e1 / 2 - 27 * e1 * e1 * e1 / 32) * Math.sin(2 * mu) + (21 * e1 * e1 / 16 - 55 * e1 * e1 * e1 * e1 / 32) * Math.sin(4 * mu) + (151 * e1 * e1 * e1 / 96) * Math.sin(6 * mu);
// double phi1 = ProjMath.radToDeg(phi1Rad);
N1 = a / Math.sqrt(1 - eccSquared * Math.sin(phi1Rad) * Math.sin(phi1Rad));
T1 = Math.tan(phi1Rad) * Math.tan(phi1Rad);
C1 = eccPrimeSquared * Math.cos(phi1Rad) * Math.cos(phi1Rad);
R1 = a * (1 - eccSquared) / Math.pow(1 - eccSquared * Math.sin(phi1Rad) * Math.sin(phi1Rad), 1.5);
D = x / (N1 * k0);
var lat = phi1Rad - (N1 * Math.tan(phi1Rad) / R1) * (D * D / 2 - (5 + 3 * T1 + 10 * C1 - 4 * C1 * C1 - 9 * eccPrimeSquared) * D * D * D * D / 24 + (61 + 90 * T1 + 298 * C1 + 45 * T1 * T1 - 252 * eccPrimeSquared - 3 * C1 * C1) * D * D * D * D * D * D / 720);
lat = radToDeg(lat);
var lon = (D - (1 + 2 * T1 + C1) * D * D * D / 6 + (5 - 2 * C1 + 28 * T1 - 3 * C1 * C1 + 8 * eccPrimeSquared + 24 * T1 * T1) * D * D * D * D * D / 120) / Math.cos(phi1Rad);
lon = LongOrigin + radToDeg(lon);
var result;
if (utm.accuracy) {
var topRight = UTMtoLL({
northing: utm.northing + utm.accuracy,
easting: utm.easting + utm.accuracy,
zoneLetter: utm.zoneLetter,
zoneNumber: utm.zoneNumber
});
result = {
top: topRight.lat,
right: topRight.lon,
bottom: lat,
left: lon
};
}
else {
result = {
lat: lat,
lon: lon
};
}
return result;
}
/**
* Calculates the MGRS letter designator for the given latitude.
*
* @private
* @param {number} lat The latitude in WGS84 to get the letter designator
* for.
* @return {char} The letter designator.
*/
function getLetterDesignator(lat) {
//This is here as an error flag to show that the Latitude is
//outside MGRS limits
var LetterDesignator = 'Z';
if ((84 >= lat) && (lat >= 72)) {
LetterDesignator = 'X';
}
else if ((72 > lat) && (lat >= 64)) {
LetterDesignator = 'W';
}
else if ((64 > lat) && (lat >= 56)) {
LetterDesignator = 'V';
}
else if ((56 > lat) && (lat >= 48)) {
LetterDesignator = 'U';
}
else if ((48 > lat) && (lat >= 40)) {
LetterDesignator = 'T';
}
else if ((40 > lat) && (lat >= 32)) {
LetterDesignator = 'S';
}
else if ((32 > lat) && (lat >= 24)) {
LetterDesignator = 'R';
}
else if ((24 > lat) && (lat >= 16)) {
LetterDesignator = 'Q';
}
else if ((16 > lat) && (lat >= 8)) {
LetterDesignator = 'P';
}
else if ((8 > lat) && (lat >= 0)) {
LetterDesignator = 'N';
}
else if ((0 > lat) && (lat >= -8)) {
LetterDesignator = 'M';
}
else if ((-8 > lat) && (lat >= -16)) {
LetterDesignator = 'L';
}
else if ((-16 > lat) && (lat >= -24)) {
LetterDesignator = 'K';
}
else if ((-24 > lat) && (lat >= -32)) {
LetterDesignator = 'J';
}
else if ((-32 > lat) && (lat >= -40)) {
LetterDesignator = 'H';
}
else if ((-40 > lat) && (lat >= -48)) {
LetterDesignator = 'G';
}
else if ((-48 > lat) && (lat >= -56)) {
LetterDesignator = 'F';
}
else if ((-56 > lat) && (lat >= -64)) {
LetterDesignator = 'E';
}
else if ((-64 > lat) && (lat >= -72)) {
LetterDesignator = 'D';
}
else if ((-72 > lat) && (lat >= -80)) {
LetterDesignator = 'C';
}
return LetterDesignator;
}
/**
* Encodes a UTM location as MGRS string.
*
* @private
* @param {object} utm An object literal with easting, northing,
* zoneLetter, zoneNumber
* @param {number} accuracy Accuracy in digits (1-5).
* @return {string} MGRS string for the given UTM location.
*/
function encode(utm, accuracy) {
// prepend with leading zeroes
var seasting = "00000" + utm.easting,
snorthing = "00000" + utm.northing;
return utm.zoneNumber + utm.zoneLetter + get100kID(utm.easting, utm.northing, utm.zoneNumber) + seasting.substr(seasting.length - 5, accuracy) + snorthing.substr(snorthing.length - 5, accuracy);
}
/**
* Get the two letter 100k designator for a given UTM easting,
* northing and zone number value.
*
* @private
* @param {number} easting
* @param {number} northing
* @param {number} zoneNumber
* @return the two letter 100k designator for the given UTM location.
*/
function get100kID(easting, northing, zoneNumber) {
var setParm = get100kSetForZone(zoneNumber);
var setColumn = Math.floor(easting / 100000);
var setRow = Math.floor(northing / 100000) % 20;
return getLetter100kID(setColumn, setRow, setParm);
}
/**
* Given a UTM zone number, figure out the MGRS 100K set it is in.
*
* @private
* @param {number} i An UTM zone number.
* @return {number} the 100k set the UTM zone is in.
*/
function get100kSetForZone(i) {
var setParm = i % NUM_100K_SETS;
if (setParm === 0) {
setParm = NUM_100K_SETS;
}
return setParm;
}
/**
* Get the two-letter MGRS 100k designator given information
* translated from the UTM northing, easting and zone number.
*
* @private
* @param {number} column the column index as it relates to the MGRS
* 100k set spreadsheet, created from the UTM easting.
* Values are 1-8.
* @param {number} row the row index as it relates to the MGRS 100k set
* spreadsheet, created from the UTM northing value. Values
* are from 0-19.
* @param {number} parm the set block, as it relates to the MGRS 100k set
* spreadsheet, created from the UTM zone. Values are from
* 1-60.
* @return two letter MGRS 100k code.
*/
function getLetter100kID(column, row, parm) {
// colOrigin and rowOrigin are the letters at the origin of the set
var index = parm - 1;
var colOrigin = SET_ORIGIN_COLUMN_LETTERS.charCodeAt(index);
var rowOrigin = SET_ORIGIN_ROW_LETTERS.charCodeAt(index);
// colInt and rowInt are the letters to build to return
var colInt = colOrigin + column - 1;
var rowInt = rowOrigin + row;
var rollover = false;
if (colInt > Z) {
colInt = colInt - Z + A - 1;
rollover = true;
}
if (colInt === I || (colOrigin < I && colInt > I) || ((colInt > I || colOrigin < I) && rollover)) {
colInt++;
}
if (colInt === O || (colOrigin < O && colInt > O) || ((colInt > O || colOrigin < O) && rollover)) {
colInt++;
if (colInt === I) {
colInt++;
}
}
if (colInt > Z) {
colInt = colInt - Z + A - 1;
}
if (rowInt > V) {
rowInt = rowInt - V + A - 1;
rollover = true;
}
else {
rollover = false;
}
if (((rowInt === I) || ((rowOrigin < I) && (rowInt > I))) || (((rowInt > I) || (rowOrigin < I)) && rollover)) {
rowInt++;
}
if (((rowInt === O) || ((rowOrigin < O) && (rowInt > O))) || (((rowInt > O) || (rowOrigin < O)) && rollover)) {
rowInt++;
if (rowInt === I) {
rowInt++;
}
}
if (rowInt > V) {
rowInt = rowInt - V + A - 1;
}
var twoLetter = String.fromCharCode(colInt) + String.fromCharCode(rowInt);
return twoLetter;
}
/**
* Decode the UTM parameters from a MGRS string.
*
* @private
* @param {string} mgrsString an UPPERCASE coordinate string is expected.
* @return {object} An object literal with easting, northing, zoneLetter,
* zoneNumber and accuracy (in meters) properties.
*/
function decode(mgrsString) {
if (mgrsString && mgrsString.length === 0) {
throw ("MGRSPoint coverting from nothing");
}
var length = mgrsString.length;
var hunK = null;
var sb = "";
var testChar;
var i = 0;
// get Zone number
while (!(/[A-Z]/).test(testChar = mgrsString.charAt(i))) {
if (i >= 2) {
throw ("MGRSPoint bad conversion from: " + mgrsString);
}
sb += testChar;
i++;
}
var zoneNumber = parseInt(sb, 10);
if (i === 0 || i + 3 > length) {
// A good MGRS string has to be 4-5 digits long,
// ##AAA/#AAA at least.
throw ("MGRSPoint bad conversion from: " + mgrsString);
}
var zoneLetter = mgrsString.charAt(i++);
// Should we check the zone letter here? Why not.
if (zoneLetter <= 'A' || zoneLetter === 'B' || zoneLetter === 'Y' || zoneLetter >= 'Z' || zoneLetter === 'I' || zoneLetter === 'O') {
throw ("MGRSPoint zone letter " + zoneLetter + " not handled: " + mgrsString);
}
hunK = mgrsString.substring(i, i += 2);
var set = get100kSetForZone(zoneNumber);
var east100k = getEastingFromChar(hunK.charAt(0), set);
var north100k = getNorthingFromChar(hunK.charAt(1), set);
// We have a bug where the northing may be 2000000 too low.
// How
// do we know when to roll over?
while (north100k < getMinNorthing(zoneLetter)) {
north100k += 2000000;
}
// calculate the char index for easting/northing separator
var remainder = length - i;
if (remainder % 2 !== 0) {
throw ("MGRSPoint has to have an even number \nof digits after the zone letter and two 100km letters - front \nhalf for easting meters, second half for \nnorthing meters" + mgrsString);
}
var sep = remainder / 2;
var sepEasting = 0.0;
var sepNorthing = 0.0;
var accuracyBonus, sepEastingString, sepNorthingString, easting, northing;
if (sep > 0) {
accuracyBonus = 100000.0 / Math.pow(10, sep);
sepEastingString = mgrsString.substring(i, i + sep);
sepEasting = parseFloat(sepEastingString) * accuracyBonus;
sepNorthingString = mgrsString.substring(i + sep);
sepNorthing = parseFloat(sepNorthingString) * accuracyBonus;
}
easting = sepEasting + east100k;
northing = sepNorthing + north100k;
return {
easting: easting,
northing: northing,
zoneLetter: zoneLetter,
zoneNumber: zoneNumber,
accuracy: accuracyBonus
};
}
/**
* Given the first letter from a two-letter MGRS 100k zone, and given the
* MGRS table set for the zone number, figure out the easting value that
* should be added to the other, secondary easting value.
*
* @private
* @param {char} e The first letter from a two-letter MGRS 100´k zone.
* @param {number} set The MGRS table set for the zone number.
* @return {number} The easting value for the given letter and set.
*/
function getEastingFromChar(e, set) {
// colOrigin is the letter at the origin of the set for the
// column
var curCol = SET_ORIGIN_COLUMN_LETTERS.charCodeAt(set - 1);
var eastingValue = 100000.0;
var rewindMarker = false;
while (curCol !== e.charCodeAt(0)) {
curCol++;
if (curCol === I) {
curCol++;
}
if (curCol === O) {
curCol++;
}
if (curCol > Z) {
if (rewindMarker) {
throw ("Bad character: " + e);
}
curCol = A;
rewindMarker = true;
}
eastingValue += 100000.0;
}
return eastingValue;
}
/**
* Given the second letter from a two-letter MGRS 100k zone, and given the
* MGRS table set for the zone number, figure out the northing value that
* should be added to the other, secondary northing value. You have to
* remember that Northings are determined from the equator, and the vertical
* cycle of letters mean a 2000000 additional northing meters. This happens
* approx. every 18 degrees of latitude. This method does *NOT* count any
* additional northings. You have to figure out how many 2000000 meters need
* to be added for the zone letter of the MGRS coordinate.
*
* @private
* @param {char} n Second letter of the MGRS 100k zone
* @param {number} set The MGRS table set number, which is dependent on the
* UTM zone number.
* @return {number} The northing value for the given letter and set.
*/
function getNorthingFromChar(n, set) {
if (n > 'V') {
throw ("MGRSPoint given invalid Northing " + n);
}
// rowOrigin is the letter at the origin of the set for the
// column
var curRow = SET_ORIGIN_ROW_LETTERS.charCodeAt(set - 1);
var northingValue = 0.0;
var rewindMarker = false;
while (curRow !== n.charCodeAt(0)) {
curRow++;
if (curRow === I) {
curRow++;
}
if (curRow === O) {
curRow++;
}
// fixing a bug making whole application hang in this loop
// when 'n' is a wrong character
if (curRow > V) {
if (rewindMarker) { // making sure that this loop ends
throw ("Bad character: " + n);
}
curRow = A;
rewindMarker = true;
}
northingValue += 100000.0;
}
return northingValue;
}
/**
* The function getMinNorthing returns the minimum northing value of a MGRS
* zone.
*
* Ported from Geotrans' c Lattitude_Band_Value structure table.
*
* @private
* @param {char} zoneLetter The MGRS zone to get the min northing for.
* @return {number}
*/
function getMinNorthing(zoneLetter) {
var northing;
switch (zoneLetter) {
case 'C':
northing = 1100000.0;
break;
case 'D':
northing = 2000000.0;
break;
case 'E':
northing = 2800000.0;
break;
case 'F':
northing = 3700000.0;
break;
case 'G':
northing = 4600000.0;
break;
case 'H':
northing = 5500000.0;
break;
case 'J':
northing = 6400000.0;
break;
case 'K':
northing = 7300000.0;
break;
case 'L':
northing = 8200000.0;
break;
case 'M':
northing = 9100000.0;
break;
case 'N':
northing = 0.0;
break;
case 'P':
northing = 800000.0;
break;
case 'Q':
northing = 1700000.0;
break;
case 'R':
northing = 2600000.0;
break;
case 'S':
northing = 3500000.0;
break;
case 'T':
northing = 4400000.0;
break;
case 'U':
northing = 5300000.0;
break;
case 'V':
northing = 6200000.0;
break;
case 'W':
northing = 7000000.0;
break;
case 'X':
northing = 7900000.0;
break;
default:
northing = -1.0;
}
if (northing >= 0.0) {
return northing;
}
else {
throw ("Invalid zone letter: " + zoneLetter);
}
}
function Point(x, y, z) {
if (!(this instanceof Point)) {
return new Point(x, y, z);
}
if (Array.isArray(x)) {
this.x = x[0];
this.y = x[1];
this.z = x[2] || 0.0;
} else if(typeof x === 'object') {
this.x = x.x;
this.y = x.y;
this.z = x.z || 0.0;
} else if (typeof x === 'string' && typeof y === 'undefined') {
var coords = x.split(',');
this.x = parseFloat(coords[0], 10);
this.y = parseFloat(coords[1], 10);
this.z = parseFloat(coords[2], 10) || 0.0;
} else {
this.x = x;
this.y = y;
this.z = z || 0.0;
}
console.warn('proj4.Point will be removed in version 3, use proj4.toPoint');
}
Point.fromMGRS = function(mgrsStr) {
return new Point(toPoint(mgrsStr));
};
Point.prototype.toMGRS = function(accuracy) {
return forward$t([this.x, this.y], accuracy);
};
var C00 = 1;
var C02 = 0.25;
var C04 = 0.046875;
var C06 = 0.01953125;
var C08 = 0.01068115234375;
var C22 = 0.75;
var C44 = 0.46875;
var C46 = 0.01302083333333333333;
var C48 = 0.00712076822916666666;
var C66 = 0.36458333333333333333;
var C68 = 0.00569661458333333333;
var C88 = 0.3076171875;
function pj_enfn(es) {
var en = [];
en[0] = C00 - es * (C02 + es * (C04 + es * (C06 + es * C08)));
en[1] = es * (C22 - es * (C04 + es * (C06 + es * C08)));
var t = es * es;
en[2] = t * (C44 - es * (C46 + es * C48));
t *= es;
en[3] = t * (C66 - es * C68);
en[4] = t * es * C88;
return en;
}
function pj_mlfn(phi, sphi, cphi, en) {
cphi *= sphi;
sphi *= sphi;
return (en[0] * phi - cphi * (en[1] + sphi * (en[2] + sphi * (en[3] + sphi * en[4]))));
}
var MAX_ITER$3 = 20;
function pj_inv_mlfn(arg, es, en) {
var k = 1 / (1 - es);
var phi = arg;
for (var i = MAX_ITER$3; i; --i) { /* rarely goes over 2 iterations */
var s = Math.sin(phi);
var t = 1 - es * s * s;
//t = this.pj_mlfn(phi, s, Math.cos(phi), en) - arg;
//phi -= t * (t * Math.sqrt(t)) * k;
t = (pj_mlfn(phi, s, Math.cos(phi), en) - arg) * (t * Math.sqrt(t)) * k;
phi -= t;
if (Math.abs(t) < EPSLN) {
return phi;
}
}
//..reportError("cass:pj_inv_mlfn: Convergence error");
return phi;
}
// Heavily based on this tmerc projection implementation
// https://github.com/mbloch/mapshaper-proj/blob/master/src/projections/tmerc.js
function init$u() {
this.x0 = this.x0 !== undefined ? this.x0 : 0;
this.y0 = this.y0 !== undefined ? this.y0 : 0;
this.long0 = this.long0 !== undefined ? this.long0 : 0;
this.lat0 = this.lat0 !== undefined ? this.lat0 : 0;
if (this.es) {
this.en = pj_enfn(this.es);
this.ml0 = pj_mlfn(this.lat0, Math.sin(this.lat0), Math.cos(this.lat0), this.en);
}
}
/**
Transverse Mercator Forward - long/lat to x/y
long/lat in radians
*/
function forward$s(p) {
var lon = p.x;
var lat = p.y;
var delta_lon = adjust_lon(lon - this.long0);
var con;
var x, y;
var sin_phi = Math.sin(lat);
var cos_phi = Math.cos(lat);
if (!this.es) {
var b = cos_phi * Math.sin(delta_lon);
if ((Math.abs(Math.abs(b) - 1)) < EPSLN) {
return (93);
}
else {
x = 0.5 * this.a * this.k0 * Math.log((1 + b) / (1 - b)) + this.x0;
y = cos_phi * Math.cos(delta_lon) / Math.sqrt(1 - Math.pow(b, 2));
b = Math.abs(y);
if (b >= 1) {
if ((b - 1) > EPSLN) {
return (93);
}
else {
y = 0;
}
}
else {
y = Math.acos(y);
}
if (lat < 0) {
y = -y;
}
y = this.a * this.k0 * (y - this.lat0) + this.y0;
}
}
else {
var al = cos_phi * delta_lon;
var als = Math.pow(al, 2);
var c = this.ep2 * Math.pow(cos_phi, 2);
var cs = Math.pow(c, 2);
var tq = Math.abs(cos_phi) > EPSLN ? Math.tan(lat) : 0;
var t = Math.pow(tq, 2);
var ts = Math.pow(t, 2);
con = 1 - this.es * Math.pow(sin_phi, 2);
al = al / Math.sqrt(con);
var ml = pj_mlfn(lat, sin_phi, cos_phi, this.en);
x = this.a * (this.k0 * al * (1 +
als / 6 * (1 - t + c +
als / 20 * (5 - 18 * t + ts + 14 * c - 58 * t * c +
als / 42 * (61 + 179 * ts - ts * t - 479 * t))))) +
this.x0;
y = this.a * (this.k0 * (ml - this.ml0 +
sin_phi * delta_lon * al / 2 * (1 +
als / 12 * (5 - t + 9 * c + 4 * cs +
als / 30 * (61 + ts - 58 * t + 270 * c - 330 * t * c +
als / 56 * (1385 + 543 * ts - ts * t - 3111 * t)))))) +
this.y0;
}
p.x = x;
p.y = y;
return p;
}
/**
Transverse Mercator Inverse - x/y to long/lat
*/
function inverse$s(p) {
var con, phi;
var lat, lon;
var x = (p.x - this.x0) * (1 / this.a);
var y = (p.y - this.y0) * (1 / this.a);
if (!this.es) {
var f = Math.exp(x / this.k0);
var g = 0.5 * (f - 1 / f);
var temp = this.lat0 + y / this.k0;
var h = Math.cos(temp);
con = Math.sqrt((1 - Math.pow(h, 2)) / (1 + Math.pow(g, 2)));
lat = Math.asin(con);
if (y < 0) {
lat = -lat;
}
if ((g === 0) && (h === 0)) {
lon = 0;
}
else {
lon = adjust_lon(Math.atan2(g, h) + this.long0);
}
}
else { // ellipsoidal form
con = this.ml0 + y / this.k0;
phi = pj_inv_mlfn(con, this.es, this.en);
if (Math.abs(phi) < HALF_PI) {
var sin_phi = Math.sin(phi);
var cos_phi = Math.cos(phi);
var tan_phi = Math.abs(cos_phi) > EPSLN ? Math.tan(phi) : 0;
var c = this.ep2 * Math.pow(cos_phi, 2);
var cs = Math.pow(c, 2);
var t = Math.pow(tan_phi, 2);
var ts = Math.pow(t, 2);
con = 1 - this.es * Math.pow(sin_phi, 2);
var d = x * Math.sqrt(con) / this.k0;
var ds = Math.pow(d, 2);
con = con * tan_phi;
lat = phi - (con * ds / (1 - this.es)) * 0.5 * (1 -
ds / 12 * (5 + 3 * t - 9 * c * t + c - 4 * cs -
ds / 30 * (61 + 90 * t - 252 * c * t + 45 * ts + 46 * c -
ds / 56 * (1385 + 3633 * t + 4095 * ts + 1574 * ts * t))));
lon = adjust_lon(this.long0 + (d * (1 -
ds / 6 * (1 + 2 * t + c -
ds / 20 * (5 + 28 * t + 24 * ts + 8 * c * t + 6 * c -
ds / 42 * (61 + 662 * t + 1320 * ts + 720 * ts * t)))) / cos_phi));
}
else {
lat = HALF_PI * sign(y);
lon = 0;
}
}
p.x = lon;
p.y = lat;
return p;
}
var names$t = ["Fast_Transverse_Mercator", "Fast Transverse Mercator"];
var tmerc = {
init: init$u,
forward: forward$s,
inverse: inverse$s,
names: names$t
};
function sinh(x) {
var r = Math.exp(x);
r = (r - 1 / r) / 2;
return r;
}
function hypot(x, y) {
x = Math.abs(x);
y = Math.abs(y);
var a = Math.max(x, y);
var b = Math.min(x, y) / (a ? a : 1);
return a * Math.sqrt(1 + Math.pow(b, 2));
}
function log1py(x) {
var y = 1 + x;
var z = y - 1;
return z === 0 ? x : x * Math.log(y) / z;
}
function asinhy(x) {
var y = Math.abs(x);
y = log1py(y * (1 + y / (hypot(1, y) + 1)));
return x < 0 ? -y : y;
}
function gatg(pp, B) {
var cos_2B = 2 * Math.cos(2 * B);
var i = pp.length - 1;
var h1 = pp[i];
var h2 = 0;
var h;
while (--i >= 0) {
h = -h2 + cos_2B * h1 + pp[i];
h2 = h1;
h1 = h;
}
return (B + h * Math.sin(2 * B));
}
function clens(pp, arg_r) {
var r = 2 * Math.cos(arg_r);
var i = pp.length - 1;
var hr1 = pp[i];
var hr2 = 0;
var hr;
while (--i >= 0) {
hr = -hr2 + r * hr1 + pp[i];
hr2 = hr1;
hr1 = hr;
}
return Math.sin(arg_r) * hr;
}
function cosh(x) {
var r = Math.exp(x);
r = (r + 1 / r) / 2;
return r;
}
function clens_cmplx(pp, arg_r, arg_i) {
var sin_arg_r = Math.sin(arg_r);
var cos_arg_r = Math.cos(arg_r);
var sinh_arg_i = sinh(arg_i);
var cosh_arg_i = cosh(arg_i);
var r = 2 * cos_arg_r * cosh_arg_i;
var i = -2 * sin_arg_r * sinh_arg_i;
var j = pp.length - 1;
var hr = pp[j];
var hi1 = 0;
var hr1 = 0;
var hi = 0;
var hr2;
var hi2;
while (--j >= 0) {
hr2 = hr1;
hi2 = hi1;
hr1 = hr;
hi1 = hi;
hr = -hr2 + r * hr1 - i * hi1 + pp[j];
hi = -hi2 + i * hr1 + r * hi1;
}
r = sin_arg_r * cosh_arg_i;
i = cos_arg_r * sinh_arg_i;
return [r * hr - i * hi, r * hi + i * hr];
}
// Heavily based on this etmerc projection implementation
// https://github.com/mbloch/mapshaper-proj/blob/master/src/projections/etmerc.js
function init$t() {
if (!this.approx && (isNaN(this.es) || this.es <= 0)) {
throw new Error('Incorrect elliptical usage. Try using the +approx option in the proj string, or PROJECTION["Fast_Transverse_Mercator"] in the WKT.');
}
if (this.approx) {
// When '+approx' is set, use tmerc instead
tmerc.init.apply(this);
this.forward = tmerc.forward;
this.inverse = tmerc.inverse;
}
this.x0 = this.x0 !== undefined ? this.x0 : 0;
this.y0 = this.y0 !== undefined ? this.y0 : 0;
this.long0 = this.long0 !== undefined ? this.long0 : 0;
this.lat0 = this.lat0 !== undefined ? this.lat0 : 0;
this.cgb = [];
this.cbg = [];
this.utg = [];
this.gtu = [];
var f = this.es / (1 + Math.sqrt(1 - this.es));
var n = f / (2 - f);
var np = n;
this.cgb[0] = n * (2 + n * (-2 / 3 + n * (-2 + n * (116 / 45 + n * (26 / 45 + n * (-2854 / 675 ))))));
this.cbg[0] = n * (-2 + n * ( 2 / 3 + n * ( 4 / 3 + n * (-82 / 45 + n * (32 / 45 + n * (4642 / 4725))))));
np = np * n;
this.cgb[1] = np * (7 / 3 + n * (-8 / 5 + n * (-227 / 45 + n * (2704 / 315 + n * (2323 / 945)))));
this.cbg[1] = np * (5 / 3 + n * (-16 / 15 + n * ( -13 / 9 + n * (904 / 315 + n * (-1522 / 945)))));
np = np * n;
this.cgb[2] = np * (56 / 15 + n * (-136 / 35 + n * (-1262 / 105 + n * (73814 / 2835))));
this.cbg[2] = np * (-26 / 15 + n * (34 / 21 + n * (8 / 5 + n * (-12686 / 2835))));
np = np * n;
this.cgb[3] = np * (4279 / 630 + n * (-332 / 35 + n * (-399572 / 14175)));
this.cbg[3] = np * (1237 / 630 + n * (-12 / 5 + n * ( -24832 / 14175)));
np = np * n;
this.cgb[4] = np * (4174 / 315 + n * (-144838 / 6237));
this.cbg[4] = np * (-734 / 315 + n * (109598 / 31185));
np = np * n;
this.cgb[5] = np * (601676 / 22275);
this.cbg[5] = np * (444337 / 155925);
np = Math.pow(n, 2);
this.Qn = this.k0 / (1 + n) * (1 + np * (1 / 4 + np * (1 / 64 + np / 256)));
this.utg[0] = n * (-0.5 + n * ( 2 / 3 + n * (-37 / 96 + n * ( 1 / 360 + n * (81 / 512 + n * (-96199 / 604800))))));
this.gtu[0] = n * (0.5 + n * (-2 / 3 + n * (5 / 16 + n * (41 / 180 + n * (-127 / 288 + n * (7891 / 37800))))));
this.utg[1] = np * (-1 / 48 + n * (-1 / 15 + n * (437 / 1440 + n * (-46 / 105 + n * (1118711 / 3870720)))));
this.gtu[1] = np * (13 / 48 + n * (-3 / 5 + n * (557 / 1440 + n * (281 / 630 + n * (-1983433 / 1935360)))));
np = np * n;
this.utg[2] = np * (-17 / 480 + n * (37 / 840 + n * (209 / 4480 + n * (-5569 / 90720 ))));
this.gtu[2] = np * (61 / 240 + n * (-103 / 140 + n * (15061 / 26880 + n * (167603 / 181440))));
np = np * n;
this.utg[3] = np * (-4397 / 161280 + n * (11 / 504 + n * (830251 / 7257600)));
this.gtu[3] = np * (49561 / 161280 + n * (-179 / 168 + n * (6601661 / 7257600)));
np = np * n;
this.utg[4] = np * (-4583 / 161280 + n * (108847 / 3991680));
this.gtu[4] = np * (34729 / 80640 + n * (-3418889 / 1995840));
np = np * n;
this.utg[5] = np * (-20648693 / 638668800);
this.gtu[5] = np * (212378941 / 319334400);
var Z = gatg(this.cbg, this.lat0);
this.Zb = -this.Qn * (Z + clens(this.gtu, 2 * Z));
}
function forward$r(p) {
var Ce = adjust_lon(p.x - this.long0);
var Cn = p.y;
Cn = gatg(this.cbg, Cn);
var sin_Cn = Math.sin(Cn);
var cos_Cn = Math.cos(Cn);
var sin_Ce = Math.sin(Ce);
var cos_Ce = Math.cos(Ce);
Cn = Math.atan2(sin_Cn, cos_Ce * cos_Cn);
Ce = Math.atan2(sin_Ce * cos_Cn, hypot(sin_Cn, cos_Cn * cos_Ce));
Ce = asinhy(Math.tan(Ce));
var tmp = clens_cmplx(this.gtu, 2 * Cn, 2 * Ce);
Cn = Cn + tmp[0];
Ce = Ce + tmp[1];
var x;
var y;
if (Math.abs(Ce) <= 2.623395162778) {
x = this.a * (this.Qn * Ce) + this.x0;
y = this.a * (this.Qn * Cn + this.Zb) + this.y0;
}
else {
x = Infinity;
y = Infinity;
}
p.x = x;
p.y = y;
return p;
}
function inverse$r(p) {
var Ce = (p.x - this.x0) * (1 / this.a);
var Cn = (p.y - this.y0) * (1 / this.a);
Cn = (Cn - this.Zb) / this.Qn;
Ce = Ce / this.Qn;
var lon;
var lat;
if (Math.abs(Ce) <= 2.623395162778) {
var tmp = clens_cmplx(this.utg, 2 * Cn, 2 * Ce);
Cn = Cn + tmp[0];
Ce = Ce + tmp[1];
Ce = Math.atan(sinh(Ce));
var sin_Cn = Math.sin(Cn);
var cos_Cn = Math.cos(Cn);
var sin_Ce = Math.sin(Ce);
var cos_Ce = Math.cos(Ce);
Cn = Math.atan2(sin_Cn * cos_Ce, hypot(sin_Ce, cos_Ce * cos_Cn));
Ce = Math.atan2(sin_Ce, cos_Ce * cos_Cn);
lon = adjust_lon(Ce + this.long0);
lat = gatg(this.cgb, Cn);
}
else {
lon = Infinity;
lat = Infinity;
}
p.x = lon;
p.y = lat;
return p;
}
var names$s = ["Extended_Transverse_Mercator", "Extended Transverse Mercator", "etmerc", "Transverse_Mercator", "Transverse Mercator", "Gauss Kruger", "Gauss_Kruger", "tmerc"];
var etmerc = {
init: init$t,
forward: forward$r,
inverse: inverse$r,
names: names$s
};
function adjust_zone(zone, lon) {
if (zone === undefined) {
zone = Math.floor((adjust_lon(lon) + Math.PI) * 30 / Math.PI) + 1;
if (zone < 0) {
return 0;
} else if (zone > 60) {
return 60;
}
}
return zone;
}
var dependsOn = 'etmerc';
function init$s() {
var zone = adjust_zone(this.zone, this.long0);
if (zone === undefined) {
throw new Error('unknown utm zone');
}
this.lat0 = 0;
this.long0 = ((6 * Math.abs(zone)) - 183) * D2R$1;
this.x0 = 500000;
this.y0 = this.utmSouth ? 10000000 : 0;
this.k0 = 0.9996;
etmerc.init.apply(this);
this.forward = etmerc.forward;
this.inverse = etmerc.inverse;
}
var names$r = ["Universal Transverse Mercator System", "utm"];
var utm = {
init: init$s,
names: names$r,
dependsOn: dependsOn
};
function srat(esinp, exp) {
return (Math.pow((1 - esinp) / (1 + esinp), exp));
}
var MAX_ITER$2 = 20;
function init$r() {
var sphi = Math.sin(this.lat0);
var cphi = Math.cos(this.lat0);
cphi *= cphi;
this.rc = Math.sqrt(1 - this.es) / (1 - this.es * sphi * sphi);
this.C = Math.sqrt(1 + this.es * cphi * cphi / (1 - this.es));
this.phic0 = Math.asin(sphi / this.C);
this.ratexp = 0.5 * this.C * this.e;
this.K = Math.tan(0.5 * this.phic0 + FORTPI) / (Math.pow(Math.tan(0.5 * this.lat0 + FORTPI), this.C) * srat(this.e * sphi, this.ratexp));
}
function forward$q(p) {
var lon = p.x;
var lat = p.y;
p.y = 2 * Math.atan(this.K * Math.pow(Math.tan(0.5 * lat + FORTPI), this.C) * srat(this.e * Math.sin(lat), this.ratexp)) - HALF_PI;
p.x = this.C * lon;
return p;
}
function inverse$q(p) {
var DEL_TOL = 1e-14;
var lon = p.x / this.C;
var lat = p.y;
var num = Math.pow(Math.tan(0.5 * lat + FORTPI) / this.K, 1 / this.C);
for (var i = MAX_ITER$2; i > 0; --i) {
lat = 2 * Math.atan(num * srat(this.e * Math.sin(p.y), - 0.5 * this.e)) - HALF_PI;
if (Math.abs(lat - p.y) < DEL_TOL) {
break;
}
p.y = lat;
}
/* convergence failed */
if (!i) {
return null;
}
p.x = lon;
p.y = lat;
return p;
}
var names$q = ["gauss"];
var gauss = {
init: init$r,
forward: forward$q,
inverse: inverse$q,
names: names$q
};
function init$q() {
gauss.init.apply(this);
if (!this.rc) {
return;
}
this.sinc0 = Math.sin(this.phic0);
this.cosc0 = Math.cos(this.phic0);
this.R2 = 2 * this.rc;
if (!this.title) {
this.title = "Oblique Stereographic Alternative";
}
}
function forward$p(p) {
var sinc, cosc, cosl, k;
p.x = adjust_lon(p.x - this.long0);
gauss.forward.apply(this, [p]);
sinc = Math.sin(p.y);
cosc = Math.cos(p.y);
cosl = Math.cos(p.x);
k = this.k0 * this.R2 / (1 + this.sinc0 * sinc + this.cosc0 * cosc * cosl);
p.x = k * cosc * Math.sin(p.x);
p.y = k * (this.cosc0 * sinc - this.sinc0 * cosc * cosl);
p.x = this.a * p.x + this.x0;
p.y = this.a * p.y + this.y0;
return p;
}
function inverse$p(p) {
var sinc, cosc, lon, lat, rho;
p.x = (p.x - this.x0) / this.a;
p.y = (p.y - this.y0) / this.a;
p.x /= this.k0;
p.y /= this.k0;
if ((rho = hypot(p.x, p.y))) {
var c = 2 * Math.atan2(rho, this.R2);
sinc = Math.sin(c);
cosc = Math.cos(c);
lat = Math.asin(cosc * this.sinc0 + p.y * sinc * this.cosc0 / rho);
lon = Math.atan2(p.x * sinc, rho * this.cosc0 * cosc - p.y * this.sinc0 * sinc);
}
else {
lat = this.phic0;
lon = 0;
}
p.x = lon;
p.y = lat;
gauss.inverse.apply(this, [p]);
p.x = adjust_lon(p.x + this.long0);
return p;
}
var names$p = ["Stereographic_North_Pole", "Oblique_Stereographic", "sterea","Oblique Stereographic Alternative","Double_Stereographic"];
var sterea = {
init: init$q,
forward: forward$p,
inverse: inverse$p,
names: names$p
};
function ssfn_(phit, sinphi, eccen) {
sinphi *= eccen;
return (Math.tan(0.5 * (HALF_PI + phit)) * Math.pow((1 - sinphi) / (1 + sinphi), 0.5 * eccen));
}
function init$p() {
// setting default parameters
this.x0 = this.x0 || 0;
this.y0 = this.y0 || 0;
this.lat0 = this.lat0 || 0;
this.long0 = this.long0 || 0;
this.coslat0 = Math.cos(this.lat0);
this.sinlat0 = Math.sin(this.lat0);
if (this.sphere) {
if (this.k0 === 1 && !isNaN(this.lat_ts) && Math.abs(this.coslat0) <= EPSLN) {
this.k0 = 0.5 * (1 + sign(this.lat0) * Math.sin(this.lat_ts));
}
}
else {
if (Math.abs(this.coslat0) <= EPSLN) {
if (this.lat0 > 0) {
//North pole
//trace('stere:north pole');
this.con = 1;
}
else {
//South pole
//trace('stere:south pole');
this.con = -1;
}
}
this.cons = Math.sqrt(Math.pow(1 + this.e, 1 + this.e) * Math.pow(1 - this.e, 1 - this.e));
if (this.k0 === 1 && !isNaN(this.lat_ts) && Math.abs(this.coslat0) <= EPSLN && Math.abs(Math.cos(this.lat_ts)) > EPSLN) {
// When k0 is 1 (default value) and lat_ts is a vaild number and lat0 is at a pole and lat_ts is not at a pole
// Recalculate k0 using formula 21-35 from p161 of Snyder, 1987
this.k0 = 0.5 * this.cons * msfnz(this.e, Math.sin(this.lat_ts), Math.cos(this.lat_ts)) / tsfnz(this.e, this.con * this.lat_ts, this.con * Math.sin(this.lat_ts));
}
this.ms1 = msfnz(this.e, this.sinlat0, this.coslat0);
this.X0 = 2 * Math.atan(this.ssfn_(this.lat0, this.sinlat0, this.e)) - HALF_PI;
this.cosX0 = Math.cos(this.X0);
this.sinX0 = Math.sin(this.X0);
}
}
// Stereographic forward equations--mapping lat,long to x,y
function forward$o(p) {
var lon = p.x;
var lat = p.y;
var sinlat = Math.sin(lat);
var coslat = Math.cos(lat);
var A, X, sinX, cosX, ts, rh;
var dlon = adjust_lon(lon - this.long0);
if (Math.abs(Math.abs(lon - this.long0) - Math.PI) <= EPSLN && Math.abs(lat + this.lat0) <= EPSLN) {
//case of the origine point
//trace('stere:this is the origin point');
p.x = NaN;
p.y = NaN;
return p;
}
if (this.sphere) {
//trace('stere:sphere case');
A = 2 * this.k0 / (1 + this.sinlat0 * sinlat + this.coslat0 * coslat * Math.cos(dlon));
p.x = this.a * A * coslat * Math.sin(dlon) + this.x0;
p.y = this.a * A * (this.coslat0 * sinlat - this.sinlat0 * coslat * Math.cos(dlon)) + this.y0;
return p;
}
else {
X = 2 * Math.atan(this.ssfn_(lat, sinlat, this.e)) - HALF_PI;
cosX = Math.cos(X);
sinX = Math.sin(X);
if (Math.abs(this.coslat0) <= EPSLN) {
ts = tsfnz(this.e, lat * this.con, this.con * sinlat);
rh = 2 * this.a * this.k0 * ts / this.cons;
p.x = this.x0 + rh * Math.sin(lon - this.long0);
p.y = this.y0 - this.con * rh * Math.cos(lon - this.long0);
//trace(p.toString());
return p;
}
else if (Math.abs(this.sinlat0) < EPSLN) {
//Eq
//trace('stere:equateur');
A = 2 * this.a * this.k0 / (1 + cosX * Math.cos(dlon));
p.y = A * sinX;
}
else {
//other case
//trace('stere:normal case');
A = 2 * this.a * this.k0 * this.ms1 / (this.cosX0 * (1 + this.sinX0 * sinX + this.cosX0 * cosX * Math.cos(dlon)));
p.y = A * (this.cosX0 * sinX - this.sinX0 * cosX * Math.cos(dlon)) + this.y0;
}
p.x = A * cosX * Math.sin(dlon) + this.x0;
}
//trace(p.toString());
return p;
}
//* Stereographic inverse equations--mapping x,y to lat/long
function inverse$o(p) {
p.x -= this.x0;
p.y -= this.y0;
var lon, lat, ts, ce, Chi;
var rh = Math.sqrt(p.x * p.x + p.y * p.y);
if (this.sphere) {
var c = 2 * Math.atan(rh / (2 * this.a * this.k0));
lon = this.long0;
lat = this.lat0;
if (rh <= EPSLN) {
p.x = lon;
p.y = lat;
return p;
}
lat = Math.asin(Math.cos(c) * this.sinlat0 + p.y * Math.sin(c) * this.coslat0 / rh);
if (Math.abs(this.coslat0) < EPSLN) {
if (this.lat0 > 0) {
lon = adjust_lon(this.long0 + Math.atan2(p.x, - 1 * p.y));
}
else {
lon = adjust_lon(this.long0 + Math.atan2(p.x, p.y));
}
}
else {
lon = adjust_lon(this.long0 + Math.atan2(p.x * Math.sin(c), rh * this.coslat0 * Math.cos(c) - p.y * this.sinlat0 * Math.sin(c)));
}
p.x = lon;
p.y = lat;
return p;
}
else {
if (Math.abs(this.coslat0) <= EPSLN) {
if (rh <= EPSLN) {
lat = this.lat0;
lon = this.long0;
p.x = lon;
p.y = lat;
//trace(p.toString());
return p;
}
p.x *= this.con;
p.y *= this.con;
ts = rh * this.cons / (2 * this.a * this.k0);
lat = this.con * phi2z(this.e, ts);
lon = this.con * adjust_lon(this.con * this.long0 + Math.atan2(p.x, - 1 * p.y));
}
else {
ce = 2 * Math.atan(rh * this.cosX0 / (2 * this.a * this.k0 * this.ms1));
lon = this.long0;
if (rh <= EPSLN) {
Chi = this.X0;
}
else {
Chi = Math.asin(Math.cos(ce) * this.sinX0 + p.y * Math.sin(ce) * this.cosX0 / rh);
lon = adjust_lon(this.long0 + Math.atan2(p.x * Math.sin(ce), rh * this.cosX0 * Math.cos(ce) - p.y * this.sinX0 * Math.sin(ce)));
}
lat = -1 * phi2z(this.e, Math.tan(0.5 * (HALF_PI + Chi)));
}
}
p.x = lon;
p.y = lat;
//trace(p.toString());
return p;
}
var names$o = ["stere", "Stereographic_South_Pole", "Polar Stereographic (variant B)", "Polar_Stereographic"];
var stere = {
init: init$p,
forward: forward$o,
inverse: inverse$o,
names: names$o,
ssfn_: ssfn_
};
/*
references:
Formules et constantes pour le Calcul pour la
projection cylindrique conforme à axe oblique et pour la transformation entre
des systèmes de référence.
http://www.swisstopo.admin.ch/internet/swisstopo/fr/home/topics/survey/sys/refsys/switzerland.parsysrelated1.31216.downloadList.77004.DownloadFile.tmp/swissprojectionfr.pdf
*/
function init$o() {
var phy0 = this.lat0;
this.lambda0 = this.long0;
var sinPhy0 = Math.sin(phy0);
var semiMajorAxis = this.a;
var invF = this.rf;
var flattening = 1 / invF;
var e2 = 2 * flattening - Math.pow(flattening, 2);
var e = this.e = Math.sqrt(e2);
this.R = this.k0 * semiMajorAxis * Math.sqrt(1 - e2) / (1 - e2 * Math.pow(sinPhy0, 2));
this.alpha = Math.sqrt(1 + e2 / (1 - e2) * Math.pow(Math.cos(phy0), 4));
this.b0 = Math.asin(sinPhy0 / this.alpha);
var k1 = Math.log(Math.tan(Math.PI / 4 + this.b0 / 2));
var k2 = Math.log(Math.tan(Math.PI / 4 + phy0 / 2));
var k3 = Math.log((1 + e * sinPhy0) / (1 - e * sinPhy0));
this.K = k1 - this.alpha * k2 + this.alpha * e / 2 * k3;
}
function forward$n(p) {
var Sa1 = Math.log(Math.tan(Math.PI / 4 - p.y / 2));
var Sa2 = this.e / 2 * Math.log((1 + this.e * Math.sin(p.y)) / (1 - this.e * Math.sin(p.y)));
var S = -this.alpha * (Sa1 + Sa2) + this.K;
// spheric latitude
var b = 2 * (Math.atan(Math.exp(S)) - Math.PI / 4);
// spheric longitude
var I = this.alpha * (p.x - this.lambda0);
// psoeudo equatorial rotation
var rotI = Math.atan(Math.sin(I) / (Math.sin(this.b0) * Math.tan(b) + Math.cos(this.b0) * Math.cos(I)));
var rotB = Math.asin(Math.cos(this.b0) * Math.sin(b) - Math.sin(this.b0) * Math.cos(b) * Math.cos(I));
p.y = this.R / 2 * Math.log((1 + Math.sin(rotB)) / (1 - Math.sin(rotB))) + this.y0;
p.x = this.R * rotI + this.x0;
return p;
}
function inverse$n(p) {
var Y = p.x - this.x0;
var X = p.y - this.y0;
var rotI = Y / this.R;
var rotB = 2 * (Math.atan(Math.exp(X / this.R)) - Math.PI / 4);
var b = Math.asin(Math.cos(this.b0) * Math.sin(rotB) + Math.sin(this.b0) * Math.cos(rotB) * Math.cos(rotI));
var I = Math.atan(Math.sin(rotI) / (Math.cos(this.b0) * Math.cos(rotI) - Math.sin(this.b0) * Math.tan(rotB)));
var lambda = this.lambda0 + I / this.alpha;
var S = 0;
var phy = b;
var prevPhy = -1000;
var iteration = 0;
while (Math.abs(phy - prevPhy) > 0.0000001) {
if (++iteration > 20) {
//...reportError("omercFwdInfinity");
return;
}
//S = Math.log(Math.tan(Math.PI / 4 + phy / 2));
S = 1 / this.alpha * (Math.log(Math.tan(Math.PI / 4 + b / 2)) - this.K) + this.e * Math.log(Math.tan(Math.PI / 4 + Math.asin(this.e * Math.sin(phy)) / 2));
prevPhy = phy;
phy = 2 * Math.atan(Math.exp(S)) - Math.PI / 2;
}
p.x = lambda;
p.y = phy;
return p;
}
var names$n = ["somerc"];
var somerc = {
init: init$o,
forward: forward$n,
inverse: inverse$n,
names: names$n
};
var TOL = 1e-7;
function isTypeA(P) {
var typeAProjections = ['Hotine_Oblique_Mercator','Hotine_Oblique_Mercator_Azimuth_Natural_Origin'];
var projectionName = typeof P.PROJECTION === "object" ? Object.keys(P.PROJECTION)[0] : P.PROJECTION;
return 'no_uoff' in P || 'no_off' in P || typeAProjections.indexOf(projectionName) !== -1;
}
/* Initialize the Oblique Mercator projection
------------------------------------------*/
function init$n() {
var con, com, cosph0, D, F, H, L, sinph0, p, J, gamma = 0,
gamma0, lamc = 0, lam1 = 0, lam2 = 0, phi1 = 0, phi2 = 0, alpha_c = 0;
// only Type A uses the no_off or no_uoff property
// https://github.com/OSGeo/proj.4/issues/104
this.no_off = isTypeA(this);
this.no_rot = 'no_rot' in this;
var alp = false;
if ("alpha" in this) {
alp = true;
}
var gam = false;
if ("rectified_grid_angle" in this) {
gam = true;
}
if (alp) {
alpha_c = this.alpha;
}
if (gam) {
gamma = (this.rectified_grid_angle * D2R$1);
}
if (alp || gam) {
lamc = this.longc;
} else {
lam1 = this.long1;
phi1 = this.lat1;
lam2 = this.long2;
phi2 = this.lat2;
if (Math.abs(phi1 - phi2) <= TOL || (con = Math.abs(phi1)) <= TOL ||
Math.abs(con - HALF_PI) <= TOL || Math.abs(Math.abs(this.lat0) - HALF_PI) <= TOL ||
Math.abs(Math.abs(phi2) - HALF_PI) <= TOL) {
throw new Error();
}
}
var one_es = 1.0 - this.es;
com = Math.sqrt(one_es);
if (Math.abs(this.lat0) > EPSLN) {
sinph0 = Math.sin(this.lat0);
cosph0 = Math.cos(this.lat0);
con = 1 - this.es * sinph0 * sinph0;
this.B = cosph0 * cosph0;
this.B = Math.sqrt(1 + this.es * this.B * this.B / one_es);
this.A = this.B * this.k0 * com / con;
D = this.B * com / (cosph0 * Math.sqrt(con));
F = D * D -1;
if (F <= 0) {
F = 0;
} else {
F = Math.sqrt(F);
if (this.lat0 < 0) {
F = -F;
}
}
this.E = F += D;
this.E *= Math.pow(tsfnz(this.e, this.lat0, sinph0), this.B);
} else {
this.B = 1 / com;
this.A = this.k0;
this.E = D = F = 1;
}
if (alp || gam) {
if (alp) {
gamma0 = Math.asin(Math.sin(alpha_c) / D);
if (!gam) {
gamma = alpha_c;
}
} else {
gamma0 = gamma;
alpha_c = Math.asin(D * Math.sin(gamma0));
}
this.lam0 = lamc - Math.asin(0.5 * (F - 1 / F) * Math.tan(gamma0)) / this.B;
} else {
H = Math.pow(tsfnz(this.e, phi1, Math.sin(phi1)), this.B);
L = Math.pow(tsfnz(this.e, phi2, Math.sin(phi2)), this.B);
F = this.E / H;
p = (L - H) / (L + H);
J = this.E * this.E;
J = (J - L * H) / (J + L * H);
con = lam1 - lam2;
if (con < -Math.pi) {
lam2 -=TWO_PI;
} else if (con > Math.pi) {
lam2 += TWO_PI;
}
this.lam0 = adjust_lon(0.5 * (lam1 + lam2) - Math.atan(J * Math.tan(0.5 * this.B * (lam1 - lam2)) / p) / this.B);
gamma0 = Math.atan(2 * Math.sin(this.B * adjust_lon(lam1 - this.lam0)) / (F - 1 / F));
gamma = alpha_c = Math.asin(D * Math.sin(gamma0));
}
this.singam = Math.sin(gamma0);
this.cosgam = Math.cos(gamma0);
this.sinrot = Math.sin(gamma);
this.cosrot = Math.cos(gamma);
this.rB = 1 / this.B;
this.ArB = this.A * this.rB;
this.BrA = 1 / this.ArB;
this.A * this.B;
if (this.no_off) {
this.u_0 = 0;
} else {
this.u_0 = Math.abs(this.ArB * Math.atan(Math.sqrt(D * D - 1) / Math.cos(alpha_c)));
if (this.lat0 < 0) {
this.u_0 = - this.u_0;
}
}
F = 0.5 * gamma0;
this.v_pole_n = this.ArB * Math.log(Math.tan(FORTPI - F));
this.v_pole_s = this.ArB * Math.log(Math.tan(FORTPI + F));
}
/* Oblique Mercator forward equations--mapping lat,long to x,y
----------------------------------------------------------*/
function forward$m(p) {
var coords = {};
var S, T, U, V, W, temp, u, v;
p.x = p.x - this.lam0;
if (Math.abs(Math.abs(p.y) - HALF_PI) > EPSLN) {
W = this.E / Math.pow(tsfnz(this.e, p.y, Math.sin(p.y)), this.B);
temp = 1 / W;
S = 0.5 * (W - temp);
T = 0.5 * (W + temp);
V = Math.sin(this.B * p.x);
U = (S * this.singam - V * this.cosgam) / T;
if (Math.abs(Math.abs(U) - 1.0) < EPSLN) {
throw new Error();
}
v = 0.5 * this.ArB * Math.log((1 - U)/(1 + U));
temp = Math.cos(this.B * p.x);
if (Math.abs(temp) < TOL) {
u = this.A * p.x;
} else {
u = this.ArB * Math.atan2((S * this.cosgam + V * this.singam), temp);
}
} else {
v = p.y > 0 ? this.v_pole_n : this.v_pole_s;
u = this.ArB * p.y;
}
if (this.no_rot) {
coords.x = u;
coords.y = v;
} else {
u -= this.u_0;
coords.x = v * this.cosrot + u * this.sinrot;
coords.y = u * this.cosrot - v * this.sinrot;
}
coords.x = (this.a * coords.x + this.x0);
coords.y = (this.a * coords.y + this.y0);
return coords;
}
function inverse$m(p) {
var u, v, Qp, Sp, Tp, Vp, Up;
var coords = {};
p.x = (p.x - this.x0) * (1.0 / this.a);
p.y = (p.y - this.y0) * (1.0 / this.a);
if (this.no_rot) {
v = p.y;
u = p.x;
} else {
v = p.x * this.cosrot - p.y * this.sinrot;
u = p.y * this.cosrot + p.x * this.sinrot + this.u_0;
}
Qp = Math.exp(-this.BrA * v);
Sp = 0.5 * (Qp - 1 / Qp);
Tp = 0.5 * (Qp + 1 / Qp);
Vp = Math.sin(this.BrA * u);
Up = (Vp * this.cosgam + Sp * this.singam) / Tp;
if (Math.abs(Math.abs(Up) - 1) < EPSLN) {
coords.x = 0;
coords.y = Up < 0 ? -HALF_PI : HALF_PI;
} else {
coords.y = this.E / Math.sqrt((1 + Up) / (1 - Up));
coords.y = phi2z(this.e, Math.pow(coords.y, 1 / this.B));
if (coords.y === Infinity) {
throw new Error();
}
coords.x = -this.rB * Math.atan2((Sp * this.cosgam - Vp * this.singam), Math.cos(this.BrA * u));
}
coords.x += this.lam0;
return coords;
}
var names$m = ["Hotine_Oblique_Mercator", "Hotine Oblique Mercator", "Hotine_Oblique_Mercator_Azimuth_Natural_Origin", "Hotine_Oblique_Mercator_Two_Point_Natural_Origin", "Hotine_Oblique_Mercator_Azimuth_Center", "Oblique_Mercator", "omerc"];
var omerc = {
init: init$n,
forward: forward$m,
inverse: inverse$m,
names: names$m
};
function init$m() {
//double lat0; /* the reference latitude */
//double long0; /* the reference longitude */
//double lat1; /* first standard parallel */
//double lat2; /* second standard parallel */
//double r_maj; /* major axis */
//double r_min; /* minor axis */
//double false_east; /* x offset in meters */
//double false_north; /* y offset in meters */
//the above value can be set with proj4.defs
//example: proj4.defs("EPSG:2154","+proj=lcc +lat_1=49 +lat_2=44 +lat_0=46.5 +lon_0=3 +x_0=700000 +y_0=6600000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs");
if (!this.lat2) {
this.lat2 = this.lat1;
} //if lat2 is not defined
if (!this.k0) {
this.k0 = 1;
}
this.x0 = this.x0 || 0;
this.y0 = this.y0 || 0;
// Standard Parallels cannot be equal and on opposite sides of the equator
if (Math.abs(this.lat1 + this.lat2) < EPSLN) {
return;
}
var temp = this.b / this.a;
this.e = Math.sqrt(1 - temp * temp);
var sin1 = Math.sin(this.lat1);
var cos1 = Math.cos(this.lat1);
var ms1 = msfnz(this.e, sin1, cos1);
var ts1 = tsfnz(this.e, this.lat1, sin1);
var sin2 = Math.sin(this.lat2);
var cos2 = Math.cos(this.lat2);
var ms2 = msfnz(this.e, sin2, cos2);
var ts2 = tsfnz(this.e, this.lat2, sin2);
var ts0 = tsfnz(this.e, this.lat0, Math.sin(this.lat0));
if (Math.abs(this.lat1 - this.lat2) > EPSLN) {
this.ns = Math.log(ms1 / ms2) / Math.log(ts1 / ts2);
}
else {
this.ns = sin1;
}
if (isNaN(this.ns)) {
this.ns = sin1;
}
this.f0 = ms1 / (this.ns * Math.pow(ts1, this.ns));
this.rh = this.a * this.f0 * Math.pow(ts0, this.ns);
if (!this.title) {
this.title = "Lambert Conformal Conic";
}
}
// Lambert Conformal conic forward equations--mapping lat,long to x,y
// -----------------------------------------------------------------
function forward$l(p) {
var lon = p.x;
var lat = p.y;
// singular cases :
if (Math.abs(2 * Math.abs(lat) - Math.PI) <= EPSLN) {
lat = sign(lat) * (HALF_PI - 2 * EPSLN);
}
var con = Math.abs(Math.abs(lat) - HALF_PI);
var ts, rh1;
if (con > EPSLN) {
ts = tsfnz(this.e, lat, Math.sin(lat));
rh1 = this.a * this.f0 * Math.pow(ts, this.ns);
}
else {
con = lat * this.ns;
if (con <= 0) {
return null;
}
rh1 = 0;
}
var theta = this.ns * adjust_lon(lon - this.long0);
p.x = this.k0 * (rh1 * Math.sin(theta)) + this.x0;
p.y = this.k0 * (this.rh - rh1 * Math.cos(theta)) + this.y0;
return p;
}
// Lambert Conformal Conic inverse equations--mapping x,y to lat/long
// -----------------------------------------------------------------
function inverse$l(p) {
var rh1, con, ts;
var lat, lon;
var x = (p.x - this.x0) / this.k0;
var y = (this.rh - (p.y - this.y0) / this.k0);
if (this.ns > 0) {
rh1 = Math.sqrt(x * x + y * y);
con = 1;
}
else {
rh1 = -Math.sqrt(x * x + y * y);
con = -1;
}
var theta = 0;
if (rh1 !== 0) {
theta = Math.atan2((con * x), (con * y));
}
if ((rh1 !== 0) || (this.ns > 0)) {
con = 1 / this.ns;
ts = Math.pow((rh1 / (this.a * this.f0)), con);
lat = phi2z(this.e, ts);
if (lat === -9999) {
return null;
}
}
else {
lat = -HALF_PI;
}
lon = adjust_lon(theta / this.ns + this.long0);
p.x = lon;
p.y = lat;
return p;
}
var names$l = [
"Lambert Tangential Conformal Conic Projection",
"Lambert_Conformal_Conic",
"Lambert_Conformal_Conic_1SP",
"Lambert_Conformal_Conic_2SP",
"lcc",
"Lambert Conic Conformal (1SP)",
"Lambert Conic Conformal (2SP)"
];
var lcc = {
init: init$m,
forward: forward$l,
inverse: inverse$l,
names: names$l
};
function init$l() {
this.a = 6377397.155;
this.es = 0.006674372230614;
this.e = Math.sqrt(this.es);
if (!this.lat0) {
this.lat0 = 0.863937979737193;
}
if (!this.long0) {
this.long0 = 0.7417649320975901 - 0.308341501185665;
}
/* if scale not set default to 0.9999 */
if (!this.k0) {
this.k0 = 0.9999;
}
this.s45 = 0.785398163397448; /* 45 */
this.s90 = 2 * this.s45;
this.fi0 = this.lat0;
this.e2 = this.es;
this.e = Math.sqrt(this.e2);
this.alfa = Math.sqrt(1 + (this.e2 * Math.pow(Math.cos(this.fi0), 4)) / (1 - this.e2));
this.uq = 1.04216856380474;
this.u0 = Math.asin(Math.sin(this.fi0) / this.alfa);
this.g = Math.pow((1 + this.e * Math.sin(this.fi0)) / (1 - this.e * Math.sin(this.fi0)), this.alfa * this.e / 2);
this.k = Math.tan(this.u0 / 2 + this.s45) / Math.pow(Math.tan(this.fi0 / 2 + this.s45), this.alfa) * this.g;
this.k1 = this.k0;
this.n0 = this.a * Math.sqrt(1 - this.e2) / (1 - this.e2 * Math.pow(Math.sin(this.fi0), 2));
this.s0 = 1.37008346281555;
this.n = Math.sin(this.s0);
this.ro0 = this.k1 * this.n0 / Math.tan(this.s0);
this.ad = this.s90 - this.uq;
}
/* ellipsoid */
/* calculate xy from lat/lon */
/* Constants, identical to inverse transform function */
function forward$k(p) {
var gfi, u, deltav, s, d, eps, ro;
var lon = p.x;
var lat = p.y;
var delta_lon = adjust_lon(lon - this.long0);
/* Transformation */
gfi = Math.pow(((1 + this.e * Math.sin(lat)) / (1 - this.e * Math.sin(lat))), (this.alfa * this.e / 2));
u = 2 * (Math.atan(this.k * Math.pow(Math.tan(lat / 2 + this.s45), this.alfa) / gfi) - this.s45);
deltav = -delta_lon * this.alfa;
s = Math.asin(Math.cos(this.ad) * Math.sin(u) + Math.sin(this.ad) * Math.cos(u) * Math.cos(deltav));
d = Math.asin(Math.cos(u) * Math.sin(deltav) / Math.cos(s));
eps = this.n * d;
ro = this.ro0 * Math.pow(Math.tan(this.s0 / 2 + this.s45), this.n) / Math.pow(Math.tan(s / 2 + this.s45), this.n);
p.y = ro * Math.cos(eps) / 1;
p.x = ro * Math.sin(eps) / 1;
if (!this.czech) {
p.y *= -1;
p.x *= -1;
}
return (p);
}
/* calculate lat/lon from xy */
function inverse$k(p) {
var u, deltav, s, d, eps, ro, fi1;
var ok;
/* Transformation */
/* revert y, x*/
var tmp = p.x;
p.x = p.y;
p.y = tmp;
if (!this.czech) {
p.y *= -1;
p.x *= -1;
}
ro = Math.sqrt(p.x * p.x + p.y * p.y);
eps = Math.atan2(p.y, p.x);
d = eps / Math.sin(this.s0);
s = 2 * (Math.atan(Math.pow(this.ro0 / ro, 1 / this.n) * Math.tan(this.s0 / 2 + this.s45)) - this.s45);
u = Math.asin(Math.cos(this.ad) * Math.sin(s) - Math.sin(this.ad) * Math.cos(s) * Math.cos(d));
deltav = Math.asin(Math.cos(s) * Math.sin(d) / Math.cos(u));
p.x = this.long0 - deltav / this.alfa;
fi1 = u;
ok = 0;
var iter = 0;
do {
p.y = 2 * (Math.atan(Math.pow(this.k, - 1 / this.alfa) * Math.pow(Math.tan(u / 2 + this.s45), 1 / this.alfa) * Math.pow((1 + this.e * Math.sin(fi1)) / (1 - this.e * Math.sin(fi1)), this.e / 2)) - this.s45);
if (Math.abs(fi1 - p.y) < 0.0000000001) {
ok = 1;
}
fi1 = p.y;
iter += 1;
} while (ok === 0 && iter < 15);
if (iter >= 15) {
return null;
}
return (p);
}
var names$k = ["Krovak", "krovak"];
var krovak = {
init: init$l,
forward: forward$k,
inverse: inverse$k,
names: names$k
};
function mlfn(e0, e1, e2, e3, phi) {
return (e0 * phi - e1 * Math.sin(2 * phi) + e2 * Math.sin(4 * phi) - e3 * Math.sin(6 * phi));
}
function e0fn(x) {
return (1 - 0.25 * x * (1 + x / 16 * (3 + 1.25 * x)));
}
function e1fn(x) {
return (0.375 * x * (1 + 0.25 * x * (1 + 0.46875 * x)));
}
function e2fn(x) {
return (0.05859375 * x * x * (1 + 0.75 * x));
}
function e3fn(x) {
return (x * x * x * (35 / 3072));
}
function gN(a, e, sinphi) {
var temp = e * sinphi;
return a / Math.sqrt(1 - temp * temp);
}
function adjust_lat(x) {
return (Math.abs(x) < HALF_PI) ? x : (x - (sign(x) * Math.PI));
}
function imlfn(ml, e0, e1, e2, e3) {
var phi;
var dphi;
phi = ml / e0;
for (var i = 0; i < 15; i++) {
dphi = (ml - (e0 * phi - e1 * Math.sin(2 * phi) + e2 * Math.sin(4 * phi) - e3 * Math.sin(6 * phi))) / (e0 - 2 * e1 * Math.cos(2 * phi) + 4 * e2 * Math.cos(4 * phi) - 6 * e3 * Math.cos(6 * phi));
phi += dphi;
if (Math.abs(dphi) <= 0.0000000001) {
return phi;
}
}
//..reportError("IMLFN-CONV:Latitude failed to converge after 15 iterations");
return NaN;
}
function init$k() {
if (!this.sphere) {
this.e0 = e0fn(this.es);
this.e1 = e1fn(this.es);
this.e2 = e2fn(this.es);
this.e3 = e3fn(this.es);
this.ml0 = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, this.lat0);
}
}
/* Cassini forward equations--mapping lat,long to x,y
-----------------------------------------------------------------------*/
function forward$j(p) {
/* Forward equations
-----------------*/
var x, y;
var lam = p.x;
var phi = p.y;
lam = adjust_lon(lam - this.long0);
if (this.sphere) {
x = this.a * Math.asin(Math.cos(phi) * Math.sin(lam));
y = this.a * (Math.atan2(Math.tan(phi), Math.cos(lam)) - this.lat0);
}
else {
//ellipsoid
var sinphi = Math.sin(phi);
var cosphi = Math.cos(phi);
var nl = gN(this.a, this.e, sinphi);
var tl = Math.tan(phi) * Math.tan(phi);
var al = lam * Math.cos(phi);
var asq = al * al;
var cl = this.es * cosphi * cosphi / (1 - this.es);
var ml = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, phi);
x = nl * al * (1 - asq * tl * (1 / 6 - (8 - tl + 8 * cl) * asq / 120));
y = ml - this.ml0 + nl * sinphi / cosphi * asq * (0.5 + (5 - tl + 6 * cl) * asq / 24);
}
p.x = x + this.x0;
p.y = y + this.y0;
return p;
}
/* Inverse equations
-----------------*/
function inverse$j(p) {
p.x -= this.x0;
p.y -= this.y0;
var x = p.x / this.a;
var y = p.y / this.a;
var phi, lam;
if (this.sphere) {
var dd = y + this.lat0;
phi = Math.asin(Math.sin(dd) * Math.cos(x));
lam = Math.atan2(Math.tan(x), Math.cos(dd));
}
else {
/* ellipsoid */
var ml1 = this.ml0 / this.a + y;
var phi1 = imlfn(ml1, this.e0, this.e1, this.e2, this.e3);
if (Math.abs(Math.abs(phi1) - HALF_PI) <= EPSLN) {
p.x = this.long0;
p.y = HALF_PI;
if (y < 0) {
p.y *= -1;
}
return p;
}
var nl1 = gN(this.a, this.e, Math.sin(phi1));
var rl1 = nl1 * nl1 * nl1 / this.a / this.a * (1 - this.es);
var tl1 = Math.pow(Math.tan(phi1), 2);
var dl = x * this.a / nl1;
var dsq = dl * dl;
phi = phi1 - nl1 * Math.tan(phi1) / rl1 * dl * dl * (0.5 - (1 + 3 * tl1) * dl * dl / 24);
lam = dl * (1 - dsq * (tl1 / 3 + (1 + 3 * tl1) * tl1 * dsq / 15)) / Math.cos(phi1);
}
p.x = adjust_lon(lam + this.long0);
p.y = adjust_lat(phi);
return p;
}
var names$j = ["Cassini", "Cassini_Soldner", "cass"];
var cass = {
init: init$k,
forward: forward$j,
inverse: inverse$j,
names: names$j
};
function qsfnz(eccent, sinphi) {
var con;
if (eccent > 1.0e-7) {
con = eccent * sinphi;
return ((1 - eccent * eccent) * (sinphi / (1 - con * con) - (0.5 / eccent) * Math.log((1 - con) / (1 + con))));
}
else {
return (2 * sinphi);
}
}
/*
reference
"New Equal-Area Map Projections for Noncircular Regions", John P. Snyder,
The American Cartographer, Vol 15, No. 4, October 1988, pp. 341-355.
*/
var S_POLE = 1;
var N_POLE = 2;
var EQUIT = 3;
var OBLIQ = 4;
/* Initialize the Lambert Azimuthal Equal Area projection
------------------------------------------------------*/
function init$j() {
var t = Math.abs(this.lat0);
if (Math.abs(t - HALF_PI) < EPSLN) {
this.mode = this.lat0 < 0 ? this.S_POLE : this.N_POLE;
}
else if (Math.abs(t) < EPSLN) {
this.mode = this.EQUIT;
}
else {
this.mode = this.OBLIQ;
}
if (this.es > 0) {
var sinphi;
this.qp = qsfnz(this.e, 1);
this.mmf = 0.5 / (1 - this.es);
this.apa = authset(this.es);
switch (this.mode) {
case this.N_POLE:
this.dd = 1;
break;
case this.S_POLE:
this.dd = 1;
break;
case this.EQUIT:
this.rq = Math.sqrt(0.5 * this.qp);
this.dd = 1 / this.rq;
this.xmf = 1;
this.ymf = 0.5 * this.qp;
break;
case this.OBLIQ:
this.rq = Math.sqrt(0.5 * this.qp);
sinphi = Math.sin(this.lat0);
this.sinb1 = qsfnz(this.e, sinphi) / this.qp;
this.cosb1 = Math.sqrt(1 - this.sinb1 * this.sinb1);
this.dd = Math.cos(this.lat0) / (Math.sqrt(1 - this.es * sinphi * sinphi) * this.rq * this.cosb1);
this.ymf = (this.xmf = this.rq) / this.dd;
this.xmf *= this.dd;
break;
}
}
else {
if (this.mode === this.OBLIQ) {
this.sinph0 = Math.sin(this.lat0);
this.cosph0 = Math.cos(this.lat0);
}
}
}
/* Lambert Azimuthal Equal Area forward equations--mapping lat,long to x,y
-----------------------------------------------------------------------*/
function forward$i(p) {
/* Forward equations
-----------------*/
var x, y, coslam, sinlam, sinphi, q, sinb, cosb, b, cosphi;
var lam = p.x;
var phi = p.y;
lam = adjust_lon(lam - this.long0);
if (this.sphere) {
sinphi = Math.sin(phi);
cosphi = Math.cos(phi);
coslam = Math.cos(lam);
if (this.mode === this.OBLIQ || this.mode === this.EQUIT) {
y = (this.mode === this.EQUIT) ? 1 + cosphi * coslam : 1 + this.sinph0 * sinphi + this.cosph0 * cosphi * coslam;
if (y <= EPSLN) {
return null;
}
y = Math.sqrt(2 / y);
x = y * cosphi * Math.sin(lam);
y *= (this.mode === this.EQUIT) ? sinphi : this.cosph0 * sinphi - this.sinph0 * cosphi * coslam;
}
else if (this.mode === this.N_POLE || this.mode === this.S_POLE) {
if (this.mode === this.N_POLE) {
coslam = -coslam;
}
if (Math.abs(phi + this.lat0) < EPSLN) {
return null;
}
y = FORTPI - phi * 0.5;
y = 2 * ((this.mode === this.S_POLE) ? Math.cos(y) : Math.sin(y));
x = y * Math.sin(lam);
y *= coslam;
}
}
else {
sinb = 0;
cosb = 0;
b = 0;
coslam = Math.cos(lam);
sinlam = Math.sin(lam);
sinphi = Math.sin(phi);
q = qsfnz(this.e, sinphi);
if (this.mode === this.OBLIQ || this.mode === this.EQUIT) {
sinb = q / this.qp;
cosb = Math.sqrt(1 - sinb * sinb);
}
switch (this.mode) {
case this.OBLIQ:
b = 1 + this.sinb1 * sinb + this.cosb1 * cosb * coslam;
break;
case this.EQUIT:
b = 1 + cosb * coslam;
break;
case this.N_POLE:
b = HALF_PI + phi;
q = this.qp - q;
break;
case this.S_POLE:
b = phi - HALF_PI;
q = this.qp + q;
break;
}
if (Math.abs(b) < EPSLN) {
return null;
}
switch (this.mode) {
case this.OBLIQ:
case this.EQUIT:
b = Math.sqrt(2 / b);
if (this.mode === this.OBLIQ) {
y = this.ymf * b * (this.cosb1 * sinb - this.sinb1 * cosb * coslam);
}
else {
y = (b = Math.sqrt(2 / (1 + cosb * coslam))) * sinb * this.ymf;
}
x = this.xmf * b * cosb * sinlam;
break;
case this.N_POLE:
case this.S_POLE:
if (q >= 0) {
x = (b = Math.sqrt(q)) * sinlam;
y = coslam * ((this.mode === this.S_POLE) ? b : -b);
}
else {
x = y = 0;
}
break;
}
}
p.x = this.a * x + this.x0;
p.y = this.a * y + this.y0;
return p;
}
/* Inverse equations
-----------------*/
function inverse$i(p) {
p.x -= this.x0;
p.y -= this.y0;
var x = p.x / this.a;
var y = p.y / this.a;
var lam, phi, cCe, sCe, q, rho, ab;
if (this.sphere) {
var cosz = 0,
rh, sinz = 0;
rh = Math.sqrt(x * x + y * y);
phi = rh * 0.5;
if (phi > 1) {
return null;
}
phi = 2 * Math.asin(phi);
if (this.mode === this.OBLIQ || this.mode === this.EQUIT) {
sinz = Math.sin(phi);
cosz = Math.cos(phi);
}
switch (this.mode) {
case this.EQUIT:
phi = (Math.abs(rh) <= EPSLN) ? 0 : Math.asin(y * sinz / rh);
x *= sinz;
y = cosz * rh;
break;
case this.OBLIQ:
phi = (Math.abs(rh) <= EPSLN) ? this.lat0 : Math.asin(cosz * this.sinph0 + y * sinz * this.cosph0 / rh);
x *= sinz * this.cosph0;
y = (cosz - Math.sin(phi) * this.sinph0) * rh;
break;
case this.N_POLE:
y = -y;
phi = HALF_PI - phi;
break;
case this.S_POLE:
phi -= HALF_PI;
break;
}
lam = (y === 0 && (this.mode === this.EQUIT || this.mode === this.OBLIQ)) ? 0 : Math.atan2(x, y);
}
else {
ab = 0;
if (this.mode === this.OBLIQ || this.mode === this.EQUIT) {
x /= this.dd;
y *= this.dd;
rho = Math.sqrt(x * x + y * y);
if (rho < EPSLN) {
p.x = this.long0;
p.y = this.lat0;
return p;
}
sCe = 2 * Math.asin(0.5 * rho / this.rq);
cCe = Math.cos(sCe);
x *= (sCe = Math.sin(sCe));
if (this.mode === this.OBLIQ) {
ab = cCe * this.sinb1 + y * sCe * this.cosb1 / rho;
q = this.qp * ab;
y = rho * this.cosb1 * cCe - y * this.sinb1 * sCe;
}
else {
ab = y * sCe / rho;
q = this.qp * ab;
y = rho * cCe;
}
}
else if (this.mode === this.N_POLE || this.mode === this.S_POLE) {
if (this.mode === this.N_POLE) {
y = -y;
}
q = (x * x + y * y);
if (!q) {
p.x = this.long0;
p.y = this.lat0;
return p;
}
ab = 1 - q / this.qp;
if (this.mode === this.S_POLE) {
ab = -ab;
}
}
lam = Math.atan2(x, y);
phi = authlat(Math.asin(ab), this.apa);
}
p.x = adjust_lon(this.long0 + lam);
p.y = phi;
return p;
}
/* determine latitude from authalic latitude */
var P00 = 0.33333333333333333333;
var P01 = 0.17222222222222222222;
var P02 = 0.10257936507936507936;
var P10 = 0.06388888888888888888;
var P11 = 0.06640211640211640211;
var P20 = 0.01641501294219154443;
function authset(es) {
var t;
var APA = [];
APA[0] = es * P00;
t = es * es;
APA[0] += t * P01;
APA[1] = t * P10;
t *= es;
APA[0] += t * P02;
APA[1] += t * P11;
APA[2] = t * P20;
return APA;
}
function authlat(beta, APA) {
var t = beta + beta;
return (beta + APA[0] * Math.sin(t) + APA[1] * Math.sin(t + t) + APA[2] * Math.sin(t + t + t));
}
var names$i = ["Lambert Azimuthal Equal Area", "Lambert_Azimuthal_Equal_Area", "laea"];
var laea = {
init: init$j,
forward: forward$i,
inverse: inverse$i,
names: names$i,
S_POLE: S_POLE,
N_POLE: N_POLE,
EQUIT: EQUIT,
OBLIQ: OBLIQ
};
function asinz(x) {
if (Math.abs(x) > 1) {
x = (x > 1) ? 1 : -1;
}
return Math.asin(x);
}
function init$i() {
if (Math.abs(this.lat1 + this.lat2) < EPSLN) {
return;
}
this.temp = this.b / this.a;
this.es = 1 - Math.pow(this.temp, 2);
this.e3 = Math.sqrt(this.es);
this.sin_po = Math.sin(this.lat1);
this.cos_po = Math.cos(this.lat1);
this.t1 = this.sin_po;
this.con = this.sin_po;
this.ms1 = msfnz(this.e3, this.sin_po, this.cos_po);
this.qs1 = qsfnz(this.e3, this.sin_po);
this.sin_po = Math.sin(this.lat2);
this.cos_po = Math.cos(this.lat2);
this.t2 = this.sin_po;
this.ms2 = msfnz(this.e3, this.sin_po, this.cos_po);
this.qs2 = qsfnz(this.e3, this.sin_po);
this.sin_po = Math.sin(this.lat0);
this.cos_po = Math.cos(this.lat0);
this.t3 = this.sin_po;
this.qs0 = qsfnz(this.e3, this.sin_po);
if (Math.abs(this.lat1 - this.lat2) > EPSLN) {
this.ns0 = (this.ms1 * this.ms1 - this.ms2 * this.ms2) / (this.qs2 - this.qs1);
}
else {
this.ns0 = this.con;
}
this.c = this.ms1 * this.ms1 + this.ns0 * this.qs1;
this.rh = this.a * Math.sqrt(this.c - this.ns0 * this.qs0) / this.ns0;
}
/* Albers Conical Equal Area forward equations--mapping lat,long to x,y
-------------------------------------------------------------------*/
function forward$h(p) {
var lon = p.x;
var lat = p.y;
this.sin_phi = Math.sin(lat);
this.cos_phi = Math.cos(lat);
var qs = qsfnz(this.e3, this.sin_phi);
var rh1 = this.a * Math.sqrt(this.c - this.ns0 * qs) / this.ns0;
var theta = this.ns0 * adjust_lon(lon - this.long0);
var x = rh1 * Math.sin(theta) + this.x0;
var y = this.rh - rh1 * Math.cos(theta) + this.y0;
p.x = x;
p.y = y;
return p;
}
function inverse$h(p) {
var rh1, qs, con, theta, lon, lat;
p.x -= this.x0;
p.y = this.rh - p.y + this.y0;
if (this.ns0 >= 0) {
rh1 = Math.sqrt(p.x * p.x + p.y * p.y);
con = 1;
}
else {
rh1 = -Math.sqrt(p.x * p.x + p.y * p.y);
con = -1;
}
theta = 0;
if (rh1 !== 0) {
theta = Math.atan2(con * p.x, con * p.y);
}
con = rh1 * this.ns0 / this.a;
if (this.sphere) {
lat = Math.asin((this.c - con * con) / (2 * this.ns0));
}
else {
qs = (this.c - con * con) / this.ns0;
lat = this.phi1z(this.e3, qs);
}
lon = adjust_lon(theta / this.ns0 + this.long0);
p.x = lon;
p.y = lat;
return p;
}
/* Function to compute phi1, the latitude for the inverse of the
Albers Conical Equal-Area projection.
-------------------------------------------*/
function phi1z(eccent, qs) {
var sinphi, cosphi, con, com, dphi;
var phi = asinz(0.5 * qs);
if (eccent < EPSLN) {
return phi;
}
var eccnts = eccent * eccent;
for (var i = 1; i <= 25; i++) {
sinphi = Math.sin(phi);
cosphi = Math.cos(phi);
con = eccent * sinphi;
com = 1 - con * con;
dphi = 0.5 * com * com / cosphi * (qs / (1 - eccnts) - sinphi / com + 0.5 / eccent * Math.log((1 - con) / (1 + con)));
phi = phi + dphi;
if (Math.abs(dphi) <= 1e-7) {
return phi;
}
}
return null;
}
var names$h = ["Albers_Conic_Equal_Area", "Albers", "aea"];
var aea = {
init: init$i,
forward: forward$h,
inverse: inverse$h,
names: names$h,
phi1z: phi1z
};
/*
reference:
Wolfram Mathworld "Gnomonic Projection"
http://mathworld.wolfram.com/GnomonicProjection.html
Accessed: 12th November 2009
*/
function init$h() {
/* Place parameters in static storage for common use
-------------------------------------------------*/
this.sin_p14 = Math.sin(this.lat0);
this.cos_p14 = Math.cos(this.lat0);
// Approximation for projecting points to the horizon (infinity)
this.infinity_dist = 1000 * this.a;
this.rc = 1;
}
/* Gnomonic forward equations--mapping lat,long to x,y
---------------------------------------------------*/
function forward$g(p) {
var sinphi, cosphi; /* sin and cos value */
var dlon; /* delta longitude value */
var coslon; /* cos of longitude */
var ksp; /* scale factor */
var g;
var x, y;
var lon = p.x;
var lat = p.y;
/* Forward equations
-----------------*/
dlon = adjust_lon(lon - this.long0);
sinphi = Math.sin(lat);
cosphi = Math.cos(lat);
coslon = Math.cos(dlon);
g = this.sin_p14 * sinphi + this.cos_p14 * cosphi * coslon;
ksp = 1;
if ((g > 0) || (Math.abs(g) <= EPSLN)) {
x = this.x0 + this.a * ksp * cosphi * Math.sin(dlon) / g;
y = this.y0 + this.a * ksp * (this.cos_p14 * sinphi - this.sin_p14 * cosphi * coslon) / g;
}
else {
// Point is in the opposing hemisphere and is unprojectable
// We still need to return a reasonable point, so we project
// to infinity, on a bearing
// equivalent to the northern hemisphere equivalent
// This is a reasonable approximation for short shapes and lines that
// straddle the horizon.
x = this.x0 + this.infinity_dist * cosphi * Math.sin(dlon);
y = this.y0 + this.infinity_dist * (this.cos_p14 * sinphi - this.sin_p14 * cosphi * coslon);
}
p.x = x;
p.y = y;
return p;
}
function inverse$g(p) {
var rh; /* Rho */
var sinc, cosc;
var c;
var lon, lat;
/* Inverse equations
-----------------*/
p.x = (p.x - this.x0) / this.a;
p.y = (p.y - this.y0) / this.a;
p.x /= this.k0;
p.y /= this.k0;
if ((rh = Math.sqrt(p.x * p.x + p.y * p.y))) {
c = Math.atan2(rh, this.rc);
sinc = Math.sin(c);
cosc = Math.cos(c);
lat = asinz(cosc * this.sin_p14 + (p.y * sinc * this.cos_p14) / rh);
lon = Math.atan2(p.x * sinc, rh * this.cos_p14 * cosc - p.y * this.sin_p14 * sinc);
lon = adjust_lon(this.long0 + lon);
}
else {
lat = this.phic0;
lon = 0;
}
p.x = lon;
p.y = lat;
return p;
}
var names$g = ["gnom"];
var gnom = {
init: init$h,
forward: forward$g,
inverse: inverse$g,
names: names$g
};
function iqsfnz(eccent, q) {
var temp = 1 - (1 - eccent * eccent) / (2 * eccent) * Math.log((1 - eccent) / (1 + eccent));
if (Math.abs(Math.abs(q) - temp) < 1.0E-6) {
if (q < 0) {
return (-1 * HALF_PI);
}
else {
return HALF_PI;
}
}
//var phi = 0.5* q/(1-eccent*eccent);
var phi = Math.asin(0.5 * q);
var dphi;
var sin_phi;
var cos_phi;
var con;
for (var i = 0; i < 30; i++) {
sin_phi = Math.sin(phi);
cos_phi = Math.cos(phi);
con = eccent * sin_phi;
dphi = Math.pow(1 - con * con, 2) / (2 * cos_phi) * (q / (1 - eccent * eccent) - sin_phi / (1 - con * con) + 0.5 / eccent * Math.log((1 - con) / (1 + con)));
phi += dphi;
if (Math.abs(dphi) <= 0.0000000001) {
return phi;
}
}
//console.log("IQSFN-CONV:Latitude failed to converge after 30 iterations");
return NaN;
}
/*
reference:
"Cartographic Projection Procedures for the UNIX Environment-
A User's Manual" by Gerald I. Evenden,
USGS Open File Report 90-284and Release 4 Interim Reports (2003)
*/
function init$g() {
//no-op
if (!this.sphere) {
this.k0 = msfnz(this.e, Math.sin(this.lat_ts), Math.cos(this.lat_ts));
}
}
/* Cylindrical Equal Area forward equations--mapping lat,long to x,y
------------------------------------------------------------*/
function forward$f(p) {
var lon = p.x;
var lat = p.y;
var x, y;
/* Forward equations
-----------------*/
var dlon = adjust_lon(lon - this.long0);
if (this.sphere) {
x = this.x0 + this.a * dlon * Math.cos(this.lat_ts);
y = this.y0 + this.a * Math.sin(lat) / Math.cos(this.lat_ts);
}
else {
var qs = qsfnz(this.e, Math.sin(lat));
x = this.x0 + this.a * this.k0 * dlon;
y = this.y0 + this.a * qs * 0.5 / this.k0;
}
p.x = x;
p.y = y;
return p;
}
/* Cylindrical Equal Area inverse equations--mapping x,y to lat/long
------------------------------------------------------------*/
function inverse$f(p) {
p.x -= this.x0;
p.y -= this.y0;
var lon, lat;
if (this.sphere) {
lon = adjust_lon(this.long0 + (p.x / this.a) / Math.cos(this.lat_ts));
lat = Math.asin((p.y / this.a) * Math.cos(this.lat_ts));
}
else {
lat = iqsfnz(this.e, 2 * p.y * this.k0 / this.a);
lon = adjust_lon(this.long0 + p.x / (this.a * this.k0));
}
p.x = lon;
p.y = lat;
return p;
}
var names$f = ["cea"];
var cea = {
init: init$g,
forward: forward$f,
inverse: inverse$f,
names: names$f
};
function init$f() {
this.x0 = this.x0 || 0;
this.y0 = this.y0 || 0;
this.lat0 = this.lat0 || 0;
this.long0 = this.long0 || 0;
this.lat_ts = this.lat_ts || 0;
this.title = this.title || "Equidistant Cylindrical (Plate Carre)";
this.rc = Math.cos(this.lat_ts);
}
// forward equations--mapping lat,long to x,y
// -----------------------------------------------------------------
function forward$e(p) {
var lon = p.x;
var lat = p.y;
var dlon = adjust_lon(lon - this.long0);
var dlat = adjust_lat(lat - this.lat0);
p.x = this.x0 + (this.a * dlon * this.rc);
p.y = this.y0 + (this.a * dlat);
return p;
}
// inverse equations--mapping x,y to lat/long
// -----------------------------------------------------------------
function inverse$e(p) {
var x = p.x;
var y = p.y;
p.x = adjust_lon(this.long0 + ((x - this.x0) / (this.a * this.rc)));
p.y = adjust_lat(this.lat0 + ((y - this.y0) / (this.a)));
return p;
}
var names$e = ["Equirectangular", "Equidistant_Cylindrical", "eqc"];
var eqc = {
init: init$f,
forward: forward$e,
inverse: inverse$e,
names: names$e
};
var MAX_ITER$1 = 20;
function init$e() {
/* Place parameters in static storage for common use
-------------------------------------------------*/
this.temp = this.b / this.a;
this.es = 1 - Math.pow(this.temp, 2); // devait etre dans tmerc.js mais n y est pas donc je commente sinon retour de valeurs nulles
this.e = Math.sqrt(this.es);
this.e0 = e0fn(this.es);
this.e1 = e1fn(this.es);
this.e2 = e2fn(this.es);
this.e3 = e3fn(this.es);
this.ml0 = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, this.lat0); //si que des zeros le calcul ne se fait pas
}
/* Polyconic forward equations--mapping lat,long to x,y
---------------------------------------------------*/
function forward$d(p) {
var lon = p.x;
var lat = p.y;
var x, y, el;
var dlon = adjust_lon(lon - this.long0);
el = dlon * Math.sin(lat);
if (this.sphere) {
if (Math.abs(lat) <= EPSLN) {
x = this.a * dlon;
y = -1 * this.a * this.lat0;
}
else {
x = this.a * Math.sin(el) / Math.tan(lat);
y = this.a * (adjust_lat(lat - this.lat0) + (1 - Math.cos(el)) / Math.tan(lat));
}
}
else {
if (Math.abs(lat) <= EPSLN) {
x = this.a * dlon;
y = -1 * this.ml0;
}
else {
var nl = gN(this.a, this.e, Math.sin(lat)) / Math.tan(lat);
x = nl * Math.sin(el);
y = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, lat) - this.ml0 + nl * (1 - Math.cos(el));
}
}
p.x = x + this.x0;
p.y = y + this.y0;
return p;
}
/* Inverse equations
-----------------*/
function inverse$d(p) {
var lon, lat, x, y, i;
var al, bl;
var phi, dphi;
x = p.x - this.x0;
y = p.y - this.y0;
if (this.sphere) {
if (Math.abs(y + this.a * this.lat0) <= EPSLN) {
lon = adjust_lon(x / this.a + this.long0);
lat = 0;
}
else {
al = this.lat0 + y / this.a;
bl = x * x / this.a / this.a + al * al;
phi = al;
var tanphi;
for (i = MAX_ITER$1; i; --i) {
tanphi = Math.tan(phi);
dphi = -1 * (al * (phi * tanphi + 1) - phi - 0.5 * (phi * phi + bl) * tanphi) / ((phi - al) / tanphi - 1);
phi += dphi;
if (Math.abs(dphi) <= EPSLN) {
lat = phi;
break;
}
}
lon = adjust_lon(this.long0 + (Math.asin(x * Math.tan(phi) / this.a)) / Math.sin(lat));
}
}
else {
if (Math.abs(y + this.ml0) <= EPSLN) {
lat = 0;
lon = adjust_lon(this.long0 + x / this.a);
}
else {
al = (this.ml0 + y) / this.a;
bl = x * x / this.a / this.a + al * al;
phi = al;
var cl, mln, mlnp, ma;
var con;
for (i = MAX_ITER$1; i; --i) {
con = this.e * Math.sin(phi);
cl = Math.sqrt(1 - con * con) * Math.tan(phi);
mln = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, phi);
mlnp = this.e0 - 2 * this.e1 * Math.cos(2 * phi) + 4 * this.e2 * Math.cos(4 * phi) - 6 * this.e3 * Math.cos(6 * phi);
ma = mln / this.a;
dphi = (al * (cl * ma + 1) - ma - 0.5 * cl * (ma * ma + bl)) / (this.es * Math.sin(2 * phi) * (ma * ma + bl - 2 * al * ma) / (4 * cl) + (al - ma) * (cl * mlnp - 2 / Math.sin(2 * phi)) - mlnp);
phi -= dphi;
if (Math.abs(dphi) <= EPSLN) {
lat = phi;
break;
}
}
//lat=phi4z(this.e,this.e0,this.e1,this.e2,this.e3,al,bl,0,0);
cl = Math.sqrt(1 - this.es * Math.pow(Math.sin(lat), 2)) * Math.tan(lat);
lon = adjust_lon(this.long0 + Math.asin(x * cl / this.a) / Math.sin(lat));
}
}
p.x = lon;
p.y = lat;
return p;
}
var names$d = ["Polyconic", "poly"];
var poly = {
init: init$e,
forward: forward$d,
inverse: inverse$d,
names: names$d
};
function init$d() {
this.A = [];
this.A[1] = 0.6399175073;
this.A[2] = -0.1358797613;
this.A[3] = 0.063294409;
this.A[4] = -0.02526853;
this.A[5] = 0.0117879;
this.A[6] = -0.0055161;
this.A[7] = 0.0026906;
this.A[8] = -0.001333;
this.A[9] = 0.00067;
this.A[10] = -0.00034;
this.B_re = [];
this.B_im = [];
this.B_re[1] = 0.7557853228;
this.B_im[1] = 0;
this.B_re[2] = 0.249204646;
this.B_im[2] = 0.003371507;
this.B_re[3] = -0.001541739;
this.B_im[3] = 0.041058560;
this.B_re[4] = -0.10162907;
this.B_im[4] = 0.01727609;
this.B_re[5] = -0.26623489;
this.B_im[5] = -0.36249218;
this.B_re[6] = -0.6870983;
this.B_im[6] = -1.1651967;
this.C_re = [];
this.C_im = [];
this.C_re[1] = 1.3231270439;
this.C_im[1] = 0;
this.C_re[2] = -0.577245789;
this.C_im[2] = -0.007809598;
this.C_re[3] = 0.508307513;
this.C_im[3] = -0.112208952;
this.C_re[4] = -0.15094762;
this.C_im[4] = 0.18200602;
this.C_re[5] = 1.01418179;
this.C_im[5] = 1.64497696;
this.C_re[6] = 1.9660549;
this.C_im[6] = 2.5127645;
this.D = [];
this.D[1] = 1.5627014243;
this.D[2] = 0.5185406398;
this.D[3] = -0.03333098;
this.D[4] = -0.1052906;
this.D[5] = -0.0368594;
this.D[6] = 0.007317;
this.D[7] = 0.01220;
this.D[8] = 0.00394;
this.D[9] = -0.0013;
}
/**
New Zealand Map Grid Forward - long/lat to x/y
long/lat in radians
*/
function forward$c(p) {
var n;
var lon = p.x;
var lat = p.y;
var delta_lat = lat - this.lat0;
var delta_lon = lon - this.long0;
// 1. Calculate d_phi and d_psi ... // and d_lambda
// For this algorithm, delta_latitude is in seconds of arc x 10-5, so we need to scale to those units. Longitude is radians.
var d_phi = delta_lat / SEC_TO_RAD * 1E-5;
var d_lambda = delta_lon;
var d_phi_n = 1; // d_phi^0
var d_psi = 0;
for (n = 1; n <= 10; n++) {
d_phi_n = d_phi_n * d_phi;
d_psi = d_psi + this.A[n] * d_phi_n;
}
// 2. Calculate theta
var th_re = d_psi;
var th_im = d_lambda;
// 3. Calculate z
var th_n_re = 1;
var th_n_im = 0; // theta^0
var th_n_re1;
var th_n_im1;
var z_re = 0;
var z_im = 0;
for (n = 1; n <= 6; n++) {
th_n_re1 = th_n_re * th_re - th_n_im * th_im;
th_n_im1 = th_n_im * th_re + th_n_re * th_im;
th_n_re = th_n_re1;
th_n_im = th_n_im1;
z_re = z_re + this.B_re[n] * th_n_re - this.B_im[n] * th_n_im;
z_im = z_im + this.B_im[n] * th_n_re + this.B_re[n] * th_n_im;
}
// 4. Calculate easting and northing
p.x = (z_im * this.a) + this.x0;
p.y = (z_re * this.a) + this.y0;
return p;
}
/**
New Zealand Map Grid Inverse - x/y to long/lat
*/
function inverse$c(p) {
var n;
var x = p.x;
var y = p.y;
var delta_x = x - this.x0;
var delta_y = y - this.y0;
// 1. Calculate z
var z_re = delta_y / this.a;
var z_im = delta_x / this.a;
// 2a. Calculate theta - first approximation gives km accuracy
var z_n_re = 1;
var z_n_im = 0; // z^0
var z_n_re1;
var z_n_im1;
var th_re = 0;
var th_im = 0;
for (n = 1; n <= 6; n++) {
z_n_re1 = z_n_re * z_re - z_n_im * z_im;
z_n_im1 = z_n_im * z_re + z_n_re * z_im;
z_n_re = z_n_re1;
z_n_im = z_n_im1;
th_re = th_re + this.C_re[n] * z_n_re - this.C_im[n] * z_n_im;
th_im = th_im + this.C_im[n] * z_n_re + this.C_re[n] * z_n_im;
}
// 2b. Iterate to refine the accuracy of the calculation
// 0 iterations gives km accuracy
// 1 iteration gives m accuracy -- good enough for most mapping applications
// 2 iterations bives mm accuracy
for (var i = 0; i < this.iterations; i++) {
var th_n_re = th_re;
var th_n_im = th_im;
var th_n_re1;
var th_n_im1;
var num_re = z_re;
var num_im = z_im;
for (n = 2; n <= 6; n++) {
th_n_re1 = th_n_re * th_re - th_n_im * th_im;
th_n_im1 = th_n_im * th_re + th_n_re * th_im;
th_n_re = th_n_re1;
th_n_im = th_n_im1;
num_re = num_re + (n - 1) * (this.B_re[n] * th_n_re - this.B_im[n] * th_n_im);
num_im = num_im + (n - 1) * (this.B_im[n] * th_n_re + this.B_re[n] * th_n_im);
}
th_n_re = 1;
th_n_im = 0;
var den_re = this.B_re[1];
var den_im = this.B_im[1];
for (n = 2; n <= 6; n++) {
th_n_re1 = th_n_re * th_re - th_n_im * th_im;
th_n_im1 = th_n_im * th_re + th_n_re * th_im;
th_n_re = th_n_re1;
th_n_im = th_n_im1;
den_re = den_re + n * (this.B_re[n] * th_n_re - this.B_im[n] * th_n_im);
den_im = den_im + n * (this.B_im[n] * th_n_re + this.B_re[n] * th_n_im);
}
// Complex division
var den2 = den_re * den_re + den_im * den_im;
th_re = (num_re * den_re + num_im * den_im) / den2;
th_im = (num_im * den_re - num_re * den_im) / den2;
}
// 3. Calculate d_phi ... // and d_lambda
var d_psi = th_re;
var d_lambda = th_im;
var d_psi_n = 1; // d_psi^0
var d_phi = 0;
for (n = 1; n <= 9; n++) {
d_psi_n = d_psi_n * d_psi;
d_phi = d_phi + this.D[n] * d_psi_n;
}
// 4. Calculate latitude and longitude
// d_phi is calcuated in second of arc * 10^-5, so we need to scale back to radians. d_lambda is in radians.
var lat = this.lat0 + (d_phi * SEC_TO_RAD * 1E5);
var lon = this.long0 + d_lambda;
p.x = lon;
p.y = lat;
return p;
}
var names$c = ["New_Zealand_Map_Grid", "nzmg"];
var nzmg = {
init: init$d,
forward: forward$c,
inverse: inverse$c,
names: names$c
};
/*
reference
"New Equal-Area Map Projections for Noncircular Regions", John P. Snyder,
The American Cartographer, Vol 15, No. 4, October 1988, pp. 341-355.
*/
/* Initialize the Miller Cylindrical projection
-------------------------------------------*/
function init$c() {
//no-op
}
/* Miller Cylindrical forward equations--mapping lat,long to x,y
------------------------------------------------------------*/
function forward$b(p) {
var lon = p.x;
var lat = p.y;
/* Forward equations
-----------------*/
var dlon = adjust_lon(lon - this.long0);
var x = this.x0 + this.a * dlon;
var y = this.y0 + this.a * Math.log(Math.tan((Math.PI / 4) + (lat / 2.5))) * 1.25;
p.x = x;
p.y = y;
return p;
}
/* Miller Cylindrical inverse equations--mapping x,y to lat/long
------------------------------------------------------------*/
function inverse$b(p) {
p.x -= this.x0;
p.y -= this.y0;
var lon = adjust_lon(this.long0 + p.x / this.a);
var lat = 2.5 * (Math.atan(Math.exp(0.8 * p.y / this.a)) - Math.PI / 4);
p.x = lon;
p.y = lat;
return p;
}
var names$b = ["Miller_Cylindrical", "mill"];
var mill = {
init: init$c,
forward: forward$b,
inverse: inverse$b,
names: names$b
};
var MAX_ITER = 20;
function init$b() {
/* Place parameters in static storage for common use
-------------------------------------------------*/
if (!this.sphere) {
this.en = pj_enfn(this.es);
}
else {
this.n = 1;
this.m = 0;
this.es = 0;
this.C_y = Math.sqrt((this.m + 1) / this.n);
this.C_x = this.C_y / (this.m + 1);
}
}
/* Sinusoidal forward equations--mapping lat,long to x,y
-----------------------------------------------------*/
function forward$a(p) {
var x, y;
var lon = p.x;
var lat = p.y;
/* Forward equations
-----------------*/
lon = adjust_lon(lon - this.long0);
if (this.sphere) {
if (!this.m) {
lat = this.n !== 1 ? Math.asin(this.n * Math.sin(lat)) : lat;
}
else {
var k = this.n * Math.sin(lat);
for (var i = MAX_ITER; i; --i) {
var V = (this.m * lat + Math.sin(lat) - k) / (this.m + Math.cos(lat));
lat -= V;
if (Math.abs(V) < EPSLN) {
break;
}
}
}
x = this.a * this.C_x * lon * (this.m + Math.cos(lat));
y = this.a * this.C_y * lat;
}
else {
var s = Math.sin(lat);
var c = Math.cos(lat);
y = this.a * pj_mlfn(lat, s, c, this.en);
x = this.a * lon * c / Math.sqrt(1 - this.es * s * s);
}
p.x = x;
p.y = y;
return p;
}
function inverse$a(p) {
var lat, temp, lon, s;
p.x -= this.x0;
lon = p.x / this.a;
p.y -= this.y0;
lat = p.y / this.a;
if (this.sphere) {
lat /= this.C_y;
lon = lon / (this.C_x * (this.m + Math.cos(lat)));
if (this.m) {
lat = asinz((this.m * lat + Math.sin(lat)) / this.n);
}
else if (this.n !== 1) {
lat = asinz(Math.sin(lat) / this.n);
}
lon = adjust_lon(lon + this.long0);
lat = adjust_lat(lat);
}
else {
lat = pj_inv_mlfn(p.y / this.a, this.es, this.en);
s = Math.abs(lat);
if (s < HALF_PI) {
s = Math.sin(lat);
temp = this.long0 + p.x * Math.sqrt(1 - this.es * s * s) / (this.a * Math.cos(lat));
//temp = this.long0 + p.x / (this.a * Math.cos(lat));
lon = adjust_lon(temp);
}
else if ((s - EPSLN) < HALF_PI) {
lon = this.long0;
}
}
p.x = lon;
p.y = lat;
return p;
}
var names$a = ["Sinusoidal", "sinu"];
var sinu = {
init: init$b,
forward: forward$a,
inverse: inverse$a,
names: names$a
};
function init$a() {}
/* Mollweide forward equations--mapping lat,long to x,y
----------------------------------------------------*/
function forward$9(p) {
/* Forward equations
-----------------*/
var lon = p.x;
var lat = p.y;
var delta_lon = adjust_lon(lon - this.long0);
var theta = lat;
var con = Math.PI * Math.sin(lat);
/* Iterate using the Newton-Raphson method to find theta
-----------------------------------------------------*/
while (true) {
var delta_theta = -(theta + Math.sin(theta) - con) / (1 + Math.cos(theta));
theta += delta_theta;
if (Math.abs(delta_theta) < EPSLN) {
break;
}
}
theta /= 2;
/* If the latitude is 90 deg, force the x coordinate to be "0 + false easting"
this is done here because of precision problems with "cos(theta)"
--------------------------------------------------------------------------*/
if (Math.PI / 2 - Math.abs(lat) < EPSLN) {
delta_lon = 0;
}
var x = 0.900316316158 * this.a * delta_lon * Math.cos(theta) + this.x0;
var y = 1.4142135623731 * this.a * Math.sin(theta) + this.y0;
p.x = x;
p.y = y;
return p;
}
function inverse$9(p) {
var theta;
var arg;
/* Inverse equations
-----------------*/
p.x -= this.x0;
p.y -= this.y0;
arg = p.y / (1.4142135623731 * this.a);
/* Because of division by zero problems, 'arg' can not be 1. Therefore
a number very close to one is used instead.
-------------------------------------------------------------------*/
if (Math.abs(arg) > 0.999999999999) {
arg = 0.999999999999;
}
theta = Math.asin(arg);
var lon = adjust_lon(this.long0 + (p.x / (0.900316316158 * this.a * Math.cos(theta))));
if (lon < (-Math.PI)) {
lon = -Math.PI;
}
if (lon > Math.PI) {
lon = Math.PI;
}
arg = (2 * theta + Math.sin(2 * theta)) / Math.PI;
if (Math.abs(arg) > 1) {
arg = 1;
}
var lat = Math.asin(arg);
p.x = lon;
p.y = lat;
return p;
}
var names$9 = ["Mollweide", "moll"];
var moll = {
init: init$a,
forward: forward$9,
inverse: inverse$9,
names: names$9
};
function init$9() {
/* Place parameters in static storage for common use
-------------------------------------------------*/
// Standard Parallels cannot be equal and on opposite sides of the equator
if (Math.abs(this.lat1 + this.lat2) < EPSLN) {
return;
}
this.lat2 = this.lat2 || this.lat1;
this.temp = this.b / this.a;
this.es = 1 - Math.pow(this.temp, 2);
this.e = Math.sqrt(this.es);
this.e0 = e0fn(this.es);
this.e1 = e1fn(this.es);
this.e2 = e2fn(this.es);
this.e3 = e3fn(this.es);
this.sinphi = Math.sin(this.lat1);
this.cosphi = Math.cos(this.lat1);
this.ms1 = msfnz(this.e, this.sinphi, this.cosphi);
this.ml1 = mlfn(this.e0, this.e1, this.e2, this.e3, this.lat1);
if (Math.abs(this.lat1 - this.lat2) < EPSLN) {
this.ns = this.sinphi;
}
else {
this.sinphi = Math.sin(this.lat2);
this.cosphi = Math.cos(this.lat2);
this.ms2 = msfnz(this.e, this.sinphi, this.cosphi);
this.ml2 = mlfn(this.e0, this.e1, this.e2, this.e3, this.lat2);
this.ns = (this.ms1 - this.ms2) / (this.ml2 - this.ml1);
}
this.g = this.ml1 + this.ms1 / this.ns;
this.ml0 = mlfn(this.e0, this.e1, this.e2, this.e3, this.lat0);
this.rh = this.a * (this.g - this.ml0);
}
/* Equidistant Conic forward equations--mapping lat,long to x,y
-----------------------------------------------------------*/
function forward$8(p) {
var lon = p.x;
var lat = p.y;
var rh1;
/* Forward equations
-----------------*/
if (this.sphere) {
rh1 = this.a * (this.g - lat);
}
else {
var ml = mlfn(this.e0, this.e1, this.e2, this.e3, lat);
rh1 = this.a * (this.g - ml);
}
var theta = this.ns * adjust_lon(lon - this.long0);
var x = this.x0 + rh1 * Math.sin(theta);
var y = this.y0 + this.rh - rh1 * Math.cos(theta);
p.x = x;
p.y = y;
return p;
}
/* Inverse equations
-----------------*/
function inverse$8(p) {
p.x -= this.x0;
p.y = this.rh - p.y + this.y0;
var con, rh1, lat, lon;
if (this.ns >= 0) {
rh1 = Math.sqrt(p.x * p.x + p.y * p.y);
con = 1;
}
else {
rh1 = -Math.sqrt(p.x * p.x + p.y * p.y);
con = -1;
}
var theta = 0;
if (rh1 !== 0) {
theta = Math.atan2(con * p.x, con * p.y);
}
if (this.sphere) {
lon = adjust_lon(this.long0 + theta / this.ns);
lat = adjust_lat(this.g - rh1 / this.a);
p.x = lon;
p.y = lat;
return p;
}
else {
var ml = this.g - rh1 / this.a;
lat = imlfn(ml, this.e0, this.e1, this.e2, this.e3);
lon = adjust_lon(this.long0 + theta / this.ns);
p.x = lon;
p.y = lat;
return p;
}
}
var names$8 = ["Equidistant_Conic", "eqdc"];
var eqdc = {
init: init$9,
forward: forward$8,
inverse: inverse$8,
names: names$8
};
/* Initialize the Van Der Grinten projection
----------------------------------------*/
function init$8() {
//this.R = 6370997; //Radius of earth
this.R = this.a;
}
function forward$7(p) {
var lon = p.x;
var lat = p.y;
/* Forward equations
-----------------*/
var dlon = adjust_lon(lon - this.long0);
var x, y;
if (Math.abs(lat) <= EPSLN) {
x = this.x0 + this.R * dlon;
y = this.y0;
}
var theta = asinz(2 * Math.abs(lat / Math.PI));
if ((Math.abs(dlon) <= EPSLN) || (Math.abs(Math.abs(lat) - HALF_PI) <= EPSLN)) {
x = this.x0;
if (lat >= 0) {
y = this.y0 + Math.PI * this.R * Math.tan(0.5 * theta);
}
else {
y = this.y0 + Math.PI * this.R * -Math.tan(0.5 * theta);
}
// return(OK);
}
var al = 0.5 * Math.abs((Math.PI / dlon) - (dlon / Math.PI));
var asq = al * al;
var sinth = Math.sin(theta);
var costh = Math.cos(theta);
var g = costh / (sinth + costh - 1);
var gsq = g * g;
var m = g * (2 / sinth - 1);
var msq = m * m;
var con = Math.PI * this.R * (al * (g - msq) + Math.sqrt(asq * (g - msq) * (g - msq) - (msq + asq) * (gsq - msq))) / (msq + asq);
if (dlon < 0) {
con = -con;
}
x = this.x0 + con;
//con = Math.abs(con / (Math.PI * this.R));
var q = asq + g;
con = Math.PI * this.R * (m * q - al * Math.sqrt((msq + asq) * (asq + 1) - q * q)) / (msq + asq);
if (lat >= 0) {
//y = this.y0 + Math.PI * this.R * Math.sqrt(1 - con * con - 2 * al * con);
y = this.y0 + con;
}
else {
//y = this.y0 - Math.PI * this.R * Math.sqrt(1 - con * con - 2 * al * con);
y = this.y0 - con;
}
p.x = x;
p.y = y;
return p;
}
/* Van Der Grinten inverse equations--mapping x,y to lat/long
---------------------------------------------------------*/
function inverse$7(p) {
var lon, lat;
var xx, yy, xys, c1, c2, c3;
var a1;
var m1;
var con;
var th1;
var d;
/* inverse equations
-----------------*/
p.x -= this.x0;
p.y -= this.y0;
con = Math.PI * this.R;
xx = p.x / con;
yy = p.y / con;
xys = xx * xx + yy * yy;
c1 = -Math.abs(yy) * (1 + xys);
c2 = c1 - 2 * yy * yy + xx * xx;
c3 = -2 * c1 + 1 + 2 * yy * yy + xys * xys;
d = yy * yy / c3 + (2 * c2 * c2 * c2 / c3 / c3 / c3 - 9 * c1 * c2 / c3 / c3) / 27;
a1 = (c1 - c2 * c2 / 3 / c3) / c3;
m1 = 2 * Math.sqrt(-a1 / 3);
con = ((3 * d) / a1) / m1;
if (Math.abs(con) > 1) {
if (con >= 0) {
con = 1;
}
else {
con = -1;
}
}
th1 = Math.acos(con) / 3;
if (p.y >= 0) {
lat = (-m1 * Math.cos(th1 + Math.PI / 3) - c2 / 3 / c3) * Math.PI;
}
else {
lat = -(-m1 * Math.cos(th1 + Math.PI / 3) - c2 / 3 / c3) * Math.PI;
}
if (Math.abs(xx) < EPSLN) {
lon = this.long0;
}
else {
lon = adjust_lon(this.long0 + Math.PI * (xys - 1 + Math.sqrt(1 + 2 * (xx * xx - yy * yy) + xys * xys)) / 2 / xx);
}
p.x = lon;
p.y = lat;
return p;
}
var names$7 = ["Van_der_Grinten_I", "VanDerGrinten", "vandg"];
var vandg = {
init: init$8,
forward: forward$7,
inverse: inverse$7,
names: names$7
};
function init$7() {
this.sin_p12 = Math.sin(this.lat0);
this.cos_p12 = Math.cos(this.lat0);
}
function forward$6(p) {
var lon = p.x;
var lat = p.y;
var sinphi = Math.sin(p.y);
var cosphi = Math.cos(p.y);
var dlon = adjust_lon(lon - this.long0);
var e0, e1, e2, e3, Mlp, Ml, tanphi, Nl1, Nl, psi, Az, G, H, GH, Hs, c, kp, cos_c, s, s2, s3, s4, s5;
if (this.sphere) {
if (Math.abs(this.sin_p12 - 1) <= EPSLN) {
//North Pole case
p.x = this.x0 + this.a * (HALF_PI - lat) * Math.sin(dlon);
p.y = this.y0 - this.a * (HALF_PI - lat) * Math.cos(dlon);
return p;
}
else if (Math.abs(this.sin_p12 + 1) <= EPSLN) {
//South Pole case
p.x = this.x0 + this.a * (HALF_PI + lat) * Math.sin(dlon);
p.y = this.y0 + this.a * (HALF_PI + lat) * Math.cos(dlon);
return p;
}
else {
//default case
cos_c = this.sin_p12 * sinphi + this.cos_p12 * cosphi * Math.cos(dlon);
c = Math.acos(cos_c);
kp = c ? c / Math.sin(c) : 1;
p.x = this.x0 + this.a * kp * cosphi * Math.sin(dlon);
p.y = this.y0 + this.a * kp * (this.cos_p12 * sinphi - this.sin_p12 * cosphi * Math.cos(dlon));
return p;
}
}
else {
e0 = e0fn(this.es);
e1 = e1fn(this.es);
e2 = e2fn(this.es);
e3 = e3fn(this.es);
if (Math.abs(this.sin_p12 - 1) <= EPSLN) {
//North Pole case
Mlp = this.a * mlfn(e0, e1, e2, e3, HALF_PI);
Ml = this.a * mlfn(e0, e1, e2, e3, lat);
p.x = this.x0 + (Mlp - Ml) * Math.sin(dlon);
p.y = this.y0 - (Mlp - Ml) * Math.cos(dlon);
return p;
}
else if (Math.abs(this.sin_p12 + 1) <= EPSLN) {
//South Pole case
Mlp = this.a * mlfn(e0, e1, e2, e3, HALF_PI);
Ml = this.a * mlfn(e0, e1, e2, e3, lat);
p.x = this.x0 + (Mlp + Ml) * Math.sin(dlon);
p.y = this.y0 + (Mlp + Ml) * Math.cos(dlon);
return p;
}
else {
//Default case
tanphi = sinphi / cosphi;
Nl1 = gN(this.a, this.e, this.sin_p12);
Nl = gN(this.a, this.e, sinphi);
psi = Math.atan((1 - this.es) * tanphi + this.es * Nl1 * this.sin_p12 / (Nl * cosphi));
Az = Math.atan2(Math.sin(dlon), this.cos_p12 * Math.tan(psi) - this.sin_p12 * Math.cos(dlon));
if (Az === 0) {
s = Math.asin(this.cos_p12 * Math.sin(psi) - this.sin_p12 * Math.cos(psi));
}
else if (Math.abs(Math.abs(Az) - Math.PI) <= EPSLN) {
s = -Math.asin(this.cos_p12 * Math.sin(psi) - this.sin_p12 * Math.cos(psi));
}
else {
s = Math.asin(Math.sin(dlon) * Math.cos(psi) / Math.sin(Az));
}
G = this.e * this.sin_p12 / Math.sqrt(1 - this.es);
H = this.e * this.cos_p12 * Math.cos(Az) / Math.sqrt(1 - this.es);
GH = G * H;
Hs = H * H;
s2 = s * s;
s3 = s2 * s;
s4 = s3 * s;
s5 = s4 * s;
c = Nl1 * s * (1 - s2 * Hs * (1 - Hs) / 6 + s3 / 8 * GH * (1 - 2 * Hs) + s4 / 120 * (Hs * (4 - 7 * Hs) - 3 * G * G * (1 - 7 * Hs)) - s5 / 48 * GH);
p.x = this.x0 + c * Math.sin(Az);
p.y = this.y0 + c * Math.cos(Az);
return p;
}
}
}
function inverse$6(p) {
p.x -= this.x0;
p.y -= this.y0;
var rh, z, sinz, cosz, lon, lat, con, e0, e1, e2, e3, Mlp, M, N1, psi, Az, cosAz, tmp, A, B, D, Ee, F, sinpsi;
if (this.sphere) {
rh = Math.sqrt(p.x * p.x + p.y * p.y);
if (rh > (2 * HALF_PI * this.a)) {
return;
}
z = rh / this.a;
sinz = Math.sin(z);
cosz = Math.cos(z);
lon = this.long0;
if (Math.abs(rh) <= EPSLN) {
lat = this.lat0;
}
else {
lat = asinz(cosz * this.sin_p12 + (p.y * sinz * this.cos_p12) / rh);
con = Math.abs(this.lat0) - HALF_PI;
if (Math.abs(con) <= EPSLN) {
if (this.lat0 >= 0) {
lon = adjust_lon(this.long0 + Math.atan2(p.x, - p.y));
}
else {
lon = adjust_lon(this.long0 - Math.atan2(-p.x, p.y));
}
}
else {
/*con = cosz - this.sin_p12 * Math.sin(lat);
if ((Math.abs(con) < EPSLN) && (Math.abs(p.x) < EPSLN)) {
//no-op, just keep the lon value as is
} else {
var temp = Math.atan2((p.x * sinz * this.cos_p12), (con * rh));
lon = adjust_lon(this.long0 + Math.atan2((p.x * sinz * this.cos_p12), (con * rh)));
}*/
lon = adjust_lon(this.long0 + Math.atan2(p.x * sinz, rh * this.cos_p12 * cosz - p.y * this.sin_p12 * sinz));
}
}
p.x = lon;
p.y = lat;
return p;
}
else {
e0 = e0fn(this.es);
e1 = e1fn(this.es);
e2 = e2fn(this.es);
e3 = e3fn(this.es);
if (Math.abs(this.sin_p12 - 1) <= EPSLN) {
//North pole case
Mlp = this.a * mlfn(e0, e1, e2, e3, HALF_PI);
rh = Math.sqrt(p.x * p.x + p.y * p.y);
M = Mlp - rh;
lat = imlfn(M / this.a, e0, e1, e2, e3);
lon = adjust_lon(this.long0 + Math.atan2(p.x, - 1 * p.y));
p.x = lon;
p.y = lat;
return p;
}
else if (Math.abs(this.sin_p12 + 1) <= EPSLN) {
//South pole case
Mlp = this.a * mlfn(e0, e1, e2, e3, HALF_PI);
rh = Math.sqrt(p.x * p.x + p.y * p.y);
M = rh - Mlp;
lat = imlfn(M / this.a, e0, e1, e2, e3);
lon = adjust_lon(this.long0 + Math.atan2(p.x, p.y));
p.x = lon;
p.y = lat;
return p;
}
else {
//default case
rh = Math.sqrt(p.x * p.x + p.y * p.y);
Az = Math.atan2(p.x, p.y);
N1 = gN(this.a, this.e, this.sin_p12);
cosAz = Math.cos(Az);
tmp = this.e * this.cos_p12 * cosAz;
A = -tmp * tmp / (1 - this.es);
B = 3 * this.es * (1 - A) * this.sin_p12 * this.cos_p12 * cosAz / (1 - this.es);
D = rh / N1;
Ee = D - A * (1 + A) * Math.pow(D, 3) / 6 - B * (1 + 3 * A) * Math.pow(D, 4) / 24;
F = 1 - A * Ee * Ee / 2 - D * Ee * Ee * Ee / 6;
psi = Math.asin(this.sin_p12 * Math.cos(Ee) + this.cos_p12 * Math.sin(Ee) * cosAz);
lon = adjust_lon(this.long0 + Math.asin(Math.sin(Az) * Math.sin(Ee) / Math.cos(psi)));
sinpsi = Math.sin(psi);
lat = Math.atan2((sinpsi - this.es * F * this.sin_p12) * Math.tan(psi), sinpsi * (1 - this.es));
p.x = lon;
p.y = lat;
return p;
}
}
}
var names$6 = ["Azimuthal_Equidistant", "aeqd"];
var aeqd = {
init: init$7,
forward: forward$6,
inverse: inverse$6,
names: names$6
};
function init$6() {
//double temp; /* temporary variable */
/* Place parameters in static storage for common use
-------------------------------------------------*/
this.sin_p14 = Math.sin(this.lat0);
this.cos_p14 = Math.cos(this.lat0);
}
/* Orthographic forward equations--mapping lat,long to x,y
---------------------------------------------------*/
function forward$5(p) {
var sinphi, cosphi; /* sin and cos value */
var dlon; /* delta longitude value */
var coslon; /* cos of longitude */
var ksp; /* scale factor */
var g, x, y;
var lon = p.x;
var lat = p.y;
/* Forward equations
-----------------*/
dlon = adjust_lon(lon - this.long0);
sinphi = Math.sin(lat);
cosphi = Math.cos(lat);
coslon = Math.cos(dlon);
g = this.sin_p14 * sinphi + this.cos_p14 * cosphi * coslon;
ksp = 1;
if ((g > 0) || (Math.abs(g) <= EPSLN)) {
x = this.a * ksp * cosphi * Math.sin(dlon);
y = this.y0 + this.a * ksp * (this.cos_p14 * sinphi - this.sin_p14 * cosphi * coslon);
}
p.x = x;
p.y = y;
return p;
}
function inverse$5(p) {
var rh; /* height above ellipsoid */
var z; /* angle */
var sinz, cosz; /* sin of z and cos of z */
var con;
var lon, lat;
/* Inverse equations
-----------------*/
p.x -= this.x0;
p.y -= this.y0;
rh = Math.sqrt(p.x * p.x + p.y * p.y);
z = asinz(rh / this.a);
sinz = Math.sin(z);
cosz = Math.cos(z);
lon = this.long0;
if (Math.abs(rh) <= EPSLN) {
lat = this.lat0;
p.x = lon;
p.y = lat;
return p;
}
lat = asinz(cosz * this.sin_p14 + (p.y * sinz * this.cos_p14) / rh);
con = Math.abs(this.lat0) - HALF_PI;
if (Math.abs(con) <= EPSLN) {
if (this.lat0 >= 0) {
lon = adjust_lon(this.long0 + Math.atan2(p.x, - p.y));
}
else {
lon = adjust_lon(this.long0 - Math.atan2(-p.x, p.y));
}
p.x = lon;
p.y = lat;
return p;
}
lon = adjust_lon(this.long0 + Math.atan2((p.x * sinz), rh * this.cos_p14 * cosz - p.y * this.sin_p14 * sinz));
p.x = lon;
p.y = lat;
return p;
}
var names$5 = ["ortho"];
var ortho = {
init: init$6,
forward: forward$5,
inverse: inverse$5,
names: names$5
};
// QSC projection rewritten from the original PROJ4
// https://github.com/OSGeo/proj.4/blob/master/src/PJ_qsc.c
/* constants */
var FACE_ENUM = {
FRONT: 1,
RIGHT: 2,
BACK: 3,
LEFT: 4,
TOP: 5,
BOTTOM: 6
};
var AREA_ENUM = {
AREA_0: 1,
AREA_1: 2,
AREA_2: 3,
AREA_3: 4
};
function init$5() {
this.x0 = this.x0 || 0;
this.y0 = this.y0 || 0;
this.lat0 = this.lat0 || 0;
this.long0 = this.long0 || 0;
this.lat_ts = this.lat_ts || 0;
this.title = this.title || "Quadrilateralized Spherical Cube";
/* Determine the cube face from the center of projection. */
if (this.lat0 >= HALF_PI - FORTPI / 2.0) {
this.face = FACE_ENUM.TOP;
} else if (this.lat0 <= -(HALF_PI - FORTPI / 2.0)) {
this.face = FACE_ENUM.BOTTOM;
} else if (Math.abs(this.long0) <= FORTPI) {
this.face = FACE_ENUM.FRONT;
} else if (Math.abs(this.long0) <= HALF_PI + FORTPI) {
this.face = this.long0 > 0.0 ? FACE_ENUM.RIGHT : FACE_ENUM.LEFT;
} else {
this.face = FACE_ENUM.BACK;
}
/* Fill in useful values for the ellipsoid <-> sphere shift
* described in [LK12]. */
if (this.es !== 0) {
this.one_minus_f = 1 - (this.a - this.b) / this.a;
this.one_minus_f_squared = this.one_minus_f * this.one_minus_f;
}
}
// QSC forward equations--mapping lat,long to x,y
// -----------------------------------------------------------------
function forward$4(p) {
var xy = {x: 0, y: 0};
var lat, lon;
var theta, phi;
var t, mu;
/* nu; */
var area = {value: 0};
// move lon according to projection's lon
p.x -= this.long0;
/* Convert the geodetic latitude to a geocentric latitude.
* This corresponds to the shift from the ellipsoid to the sphere
* described in [LK12]. */
if (this.es !== 0) {//if (P->es != 0) {
lat = Math.atan(this.one_minus_f_squared * Math.tan(p.y));
} else {
lat = p.y;
}
/* Convert the input lat, lon into theta, phi as used by QSC.
* This depends on the cube face and the area on it.
* For the top and bottom face, we can compute theta and phi
* directly from phi, lam. For the other faces, we must use
* unit sphere cartesian coordinates as an intermediate step. */
lon = p.x; //lon = lp.lam;
if (this.face === FACE_ENUM.TOP) {
phi = HALF_PI - lat;
if (lon >= FORTPI && lon <= HALF_PI + FORTPI) {
area.value = AREA_ENUM.AREA_0;
theta = lon - HALF_PI;
} else if (lon > HALF_PI + FORTPI || lon <= -(HALF_PI + FORTPI)) {
area.value = AREA_ENUM.AREA_1;
theta = (lon > 0.0 ? lon - SPI : lon + SPI);
} else if (lon > -(HALF_PI + FORTPI) && lon <= -FORTPI) {
area.value = AREA_ENUM.AREA_2;
theta = lon + HALF_PI;
} else {
area.value = AREA_ENUM.AREA_3;
theta = lon;
}
} else if (this.face === FACE_ENUM.BOTTOM) {
phi = HALF_PI + lat;
if (lon >= FORTPI && lon <= HALF_PI + FORTPI) {
area.value = AREA_ENUM.AREA_0;
theta = -lon + HALF_PI;
} else if (lon < FORTPI && lon >= -FORTPI) {
area.value = AREA_ENUM.AREA_1;
theta = -lon;
} else if (lon < -FORTPI && lon >= -(HALF_PI + FORTPI)) {
area.value = AREA_ENUM.AREA_2;
theta = -lon - HALF_PI;
} else {
area.value = AREA_ENUM.AREA_3;
theta = (lon > 0.0 ? -lon + SPI : -lon - SPI);
}
} else {
var q, r, s;
var sinlat, coslat;
var sinlon, coslon;
if (this.face === FACE_ENUM.RIGHT) {
lon = qsc_shift_lon_origin(lon, +HALF_PI);
} else if (this.face === FACE_ENUM.BACK) {
lon = qsc_shift_lon_origin(lon, +SPI);
} else if (this.face === FACE_ENUM.LEFT) {
lon = qsc_shift_lon_origin(lon, -HALF_PI);
}
sinlat = Math.sin(lat);
coslat = Math.cos(lat);
sinlon = Math.sin(lon);
coslon = Math.cos(lon);
q = coslat * coslon;
r = coslat * sinlon;
s = sinlat;
if (this.face === FACE_ENUM.FRONT) {
phi = Math.acos(q);
theta = qsc_fwd_equat_face_theta(phi, s, r, area);
} else if (this.face === FACE_ENUM.RIGHT) {
phi = Math.acos(r);
theta = qsc_fwd_equat_face_theta(phi, s, -q, area);
} else if (this.face === FACE_ENUM.BACK) {
phi = Math.acos(-q);
theta = qsc_fwd_equat_face_theta(phi, s, -r, area);
} else if (this.face === FACE_ENUM.LEFT) {
phi = Math.acos(-r);
theta = qsc_fwd_equat_face_theta(phi, s, q, area);
} else {
/* Impossible */
phi = theta = 0;
area.value = AREA_ENUM.AREA_0;
}
}
/* Compute mu and nu for the area of definition.
* For mu, see Eq. (3-21) in [OL76], but note the typos:
* compare with Eq. (3-14). For nu, see Eq. (3-38). */
mu = Math.atan((12 / SPI) * (theta + Math.acos(Math.sin(theta) * Math.cos(FORTPI)) - HALF_PI));
t = Math.sqrt((1 - Math.cos(phi)) / (Math.cos(mu) * Math.cos(mu)) / (1 - Math.cos(Math.atan(1 / Math.cos(theta)))));
/* Apply the result to the real area. */
if (area.value === AREA_ENUM.AREA_1) {
mu += HALF_PI;
} else if (area.value === AREA_ENUM.AREA_2) {
mu += SPI;
} else if (area.value === AREA_ENUM.AREA_3) {
mu += 1.5 * SPI;
}
/* Now compute x, y from mu and nu */
xy.x = t * Math.cos(mu);
xy.y = t * Math.sin(mu);
xy.x = xy.x * this.a + this.x0;
xy.y = xy.y * this.a + this.y0;
p.x = xy.x;
p.y = xy.y;
return p;
}
// QSC inverse equations--mapping x,y to lat/long
// -----------------------------------------------------------------
function inverse$4(p) {
var lp = {lam: 0, phi: 0};
var mu, nu, cosmu, tannu;
var tantheta, theta, cosphi, phi;
var t;
var area = {value: 0};
/* de-offset */
p.x = (p.x - this.x0) / this.a;
p.y = (p.y - this.y0) / this.a;
/* Convert the input x, y to the mu and nu angles as used by QSC.
* This depends on the area of the cube face. */
nu = Math.atan(Math.sqrt(p.x * p.x + p.y * p.y));
mu = Math.atan2(p.y, p.x);
if (p.x >= 0.0 && p.x >= Math.abs(p.y)) {
area.value = AREA_ENUM.AREA_0;
} else if (p.y >= 0.0 && p.y >= Math.abs(p.x)) {
area.value = AREA_ENUM.AREA_1;
mu -= HALF_PI;
} else if (p.x < 0.0 && -p.x >= Math.abs(p.y)) {
area.value = AREA_ENUM.AREA_2;
mu = (mu < 0.0 ? mu + SPI : mu - SPI);
} else {
area.value = AREA_ENUM.AREA_3;
mu += HALF_PI;
}
/* Compute phi and theta for the area of definition.
* The inverse projection is not described in the original paper, but some
* good hints can be found here (as of 2011-12-14):
* http://fits.gsfc.nasa.gov/fitsbits/saf.93/saf.9302
* (search for "Message-Id: <9302181759.AA25477 at fits.cv.nrao.edu>") */
t = (SPI / 12) * Math.tan(mu);
tantheta = Math.sin(t) / (Math.cos(t) - (1 / Math.sqrt(2)));
theta = Math.atan(tantheta);
cosmu = Math.cos(mu);
tannu = Math.tan(nu);
cosphi = 1 - cosmu * cosmu * tannu * tannu * (1 - Math.cos(Math.atan(1 / Math.cos(theta))));
if (cosphi < -1) {
cosphi = -1;
} else if (cosphi > +1) {
cosphi = +1;
}
/* Apply the result to the real area on the cube face.
* For the top and bottom face, we can compute phi and lam directly.
* For the other faces, we must use unit sphere cartesian coordinates
* as an intermediate step. */
if (this.face === FACE_ENUM.TOP) {
phi = Math.acos(cosphi);
lp.phi = HALF_PI - phi;
if (area.value === AREA_ENUM.AREA_0) {
lp.lam = theta + HALF_PI;
} else if (area.value === AREA_ENUM.AREA_1) {
lp.lam = (theta < 0.0 ? theta + SPI : theta - SPI);
} else if (area.value === AREA_ENUM.AREA_2) {
lp.lam = theta - HALF_PI;
} else /* area.value == AREA_ENUM.AREA_3 */ {
lp.lam = theta;
}
} else if (this.face === FACE_ENUM.BOTTOM) {
phi = Math.acos(cosphi);
lp.phi = phi - HALF_PI;
if (area.value === AREA_ENUM.AREA_0) {
lp.lam = -theta + HALF_PI;
} else if (area.value === AREA_ENUM.AREA_1) {
lp.lam = -theta;
} else if (area.value === AREA_ENUM.AREA_2) {
lp.lam = -theta - HALF_PI;
} else /* area.value == AREA_ENUM.AREA_3 */ {
lp.lam = (theta < 0.0 ? -theta - SPI : -theta + SPI);
}
} else {
/* Compute phi and lam via cartesian unit sphere coordinates. */
var q, r, s;
q = cosphi;
t = q * q;
if (t >= 1) {
s = 0;
} else {
s = Math.sqrt(1 - t) * Math.sin(theta);
}
t += s * s;
if (t >= 1) {
r = 0;
} else {
r = Math.sqrt(1 - t);
}
/* Rotate q,r,s into the correct area. */
if (area.value === AREA_ENUM.AREA_1) {
t = r;
r = -s;
s = t;
} else if (area.value === AREA_ENUM.AREA_2) {
r = -r;
s = -s;
} else if (area.value === AREA_ENUM.AREA_3) {
t = r;
r = s;
s = -t;
}
/* Rotate q,r,s into the correct cube face. */
if (this.face === FACE_ENUM.RIGHT) {
t = q;
q = -r;
r = t;
} else if (this.face === FACE_ENUM.BACK) {
q = -q;
r = -r;
} else if (this.face === FACE_ENUM.LEFT) {
t = q;
q = r;
r = -t;
}
/* Now compute phi and lam from the unit sphere coordinates. */
lp.phi = Math.acos(-s) - HALF_PI;
lp.lam = Math.atan2(r, q);
if (this.face === FACE_ENUM.RIGHT) {
lp.lam = qsc_shift_lon_origin(lp.lam, -HALF_PI);
} else if (this.face === FACE_ENUM.BACK) {
lp.lam = qsc_shift_lon_origin(lp.lam, -SPI);
} else if (this.face === FACE_ENUM.LEFT) {
lp.lam = qsc_shift_lon_origin(lp.lam, +HALF_PI);
}
}
/* Apply the shift from the sphere to the ellipsoid as described
* in [LK12]. */
if (this.es !== 0) {
var invert_sign;
var tanphi, xa;
invert_sign = (lp.phi < 0 ? 1 : 0);
tanphi = Math.tan(lp.phi);
xa = this.b / Math.sqrt(tanphi * tanphi + this.one_minus_f_squared);
lp.phi = Math.atan(Math.sqrt(this.a * this.a - xa * xa) / (this.one_minus_f * xa));
if (invert_sign) {
lp.phi = -lp.phi;
}
}
lp.lam += this.long0;
p.x = lp.lam;
p.y = lp.phi;
return p;
}
/* Helper function for forward projection: compute the theta angle
* and determine the area number. */
function qsc_fwd_equat_face_theta(phi, y, x, area) {
var theta;
if (phi < EPSLN) {
area.value = AREA_ENUM.AREA_0;
theta = 0.0;
} else {
theta = Math.atan2(y, x);
if (Math.abs(theta) <= FORTPI) {
area.value = AREA_ENUM.AREA_0;
} else if (theta > FORTPI && theta <= HALF_PI + FORTPI) {
area.value = AREA_ENUM.AREA_1;
theta -= HALF_PI;
} else if (theta > HALF_PI + FORTPI || theta <= -(HALF_PI + FORTPI)) {
area.value = AREA_ENUM.AREA_2;
theta = (theta >= 0.0 ? theta - SPI : theta + SPI);
} else {
area.value = AREA_ENUM.AREA_3;
theta += HALF_PI;
}
}
return theta;
}
/* Helper function: shift the longitude. */
function qsc_shift_lon_origin(lon, offset) {
var slon = lon + offset;
if (slon < -SPI) {
slon += TWO_PI;
} else if (slon > +SPI) {
slon -= TWO_PI;
}
return slon;
}
var names$4 = ["Quadrilateralized Spherical Cube", "Quadrilateralized_Spherical_Cube", "qsc"];
var qsc = {
init: init$5,
forward: forward$4,
inverse: inverse$4,
names: names$4
};
// Robinson projection
// Based on https://github.com/OSGeo/proj.4/blob/master/src/PJ_robin.c
// Polynomial coeficients from http://article.gmane.org/gmane.comp.gis.proj-4.devel/6039
var COEFS_X = [
[1.0000, 2.2199e-17, -7.15515e-05, 3.1103e-06],
[0.9986, -0.000482243, -2.4897e-05, -1.3309e-06],
[0.9954, -0.00083103, -4.48605e-05, -9.86701e-07],
[0.9900, -0.00135364, -5.9661e-05, 3.6777e-06],
[0.9822, -0.00167442, -4.49547e-06, -5.72411e-06],
[0.9730, -0.00214868, -9.03571e-05, 1.8736e-08],
[0.9600, -0.00305085, -9.00761e-05, 1.64917e-06],
[0.9427, -0.00382792, -6.53386e-05, -2.6154e-06],
[0.9216, -0.00467746, -0.00010457, 4.81243e-06],
[0.8962, -0.00536223, -3.23831e-05, -5.43432e-06],
[0.8679, -0.00609363, -0.000113898, 3.32484e-06],
[0.8350, -0.00698325, -6.40253e-05, 9.34959e-07],
[0.7986, -0.00755338, -5.00009e-05, 9.35324e-07],
[0.7597, -0.00798324, -3.5971e-05, -2.27626e-06],
[0.7186, -0.00851367, -7.01149e-05, -8.6303e-06],
[0.6732, -0.00986209, -0.000199569, 1.91974e-05],
[0.6213, -0.010418, 8.83923e-05, 6.24051e-06],
[0.5722, -0.00906601, 0.000182, 6.24051e-06],
[0.5322, -0.00677797, 0.000275608, 6.24051e-06]
];
var COEFS_Y = [
[-5.20417e-18, 0.0124, 1.21431e-18, -8.45284e-11],
[0.0620, 0.0124, -1.26793e-09, 4.22642e-10],
[0.1240, 0.0124, 5.07171e-09, -1.60604e-09],
[0.1860, 0.0123999, -1.90189e-08, 6.00152e-09],
[0.2480, 0.0124002, 7.10039e-08, -2.24e-08],
[0.3100, 0.0123992, -2.64997e-07, 8.35986e-08],
[0.3720, 0.0124029, 9.88983e-07, -3.11994e-07],
[0.4340, 0.0123893, -3.69093e-06, -4.35621e-07],
[0.4958, 0.0123198, -1.02252e-05, -3.45523e-07],
[0.5571, 0.0121916, -1.54081e-05, -5.82288e-07],
[0.6176, 0.0119938, -2.41424e-05, -5.25327e-07],
[0.6769, 0.011713, -3.20223e-05, -5.16405e-07],
[0.7346, 0.0113541, -3.97684e-05, -6.09052e-07],
[0.7903, 0.0109107, -4.89042e-05, -1.04739e-06],
[0.8435, 0.0103431, -6.4615e-05, -1.40374e-09],
[0.8936, 0.00969686, -6.4636e-05, -8.547e-06],
[0.9394, 0.00840947, -0.000192841, -4.2106e-06],
[0.9761, 0.00616527, -0.000256, -4.2106e-06],
[1.0000, 0.00328947, -0.000319159, -4.2106e-06]
];
var FXC = 0.8487;
var FYC = 1.3523;
var C1 = R2D/5; // rad to 5-degree interval
var RC1 = 1/C1;
var NODES = 18;
var poly3_val = function(coefs, x) {
return coefs[0] + x * (coefs[1] + x * (coefs[2] + x * coefs[3]));
};
var poly3_der = function(coefs, x) {
return coefs[1] + x * (2 * coefs[2] + x * 3 * coefs[3]);
};
function newton_rapshon(f_df, start, max_err, iters) {
var x = start;
for (; iters; --iters) {
var upd = f_df(x);
x -= upd;
if (Math.abs(upd) < max_err) {
break;
}
}
return x;
}
function init$4() {
this.x0 = this.x0 || 0;
this.y0 = this.y0 || 0;
this.long0 = this.long0 || 0;
this.es = 0;
this.title = this.title || "Robinson";
}
function forward$3(ll) {
var lon = adjust_lon(ll.x - this.long0);
var dphi = Math.abs(ll.y);
var i = Math.floor(dphi * C1);
if (i < 0) {
i = 0;
} else if (i >= NODES) {
i = NODES - 1;
}
dphi = R2D * (dphi - RC1 * i);
var xy = {
x: poly3_val(COEFS_X[i], dphi) * lon,
y: poly3_val(COEFS_Y[i], dphi)
};
if (ll.y < 0) {
xy.y = -xy.y;
}
xy.x = xy.x * this.a * FXC + this.x0;
xy.y = xy.y * this.a * FYC + this.y0;
return xy;
}
function inverse$3(xy) {
var ll = {
x: (xy.x - this.x0) / (this.a * FXC),
y: Math.abs(xy.y - this.y0) / (this.a * FYC)
};
if (ll.y >= 1) { // pathologic case
ll.x /= COEFS_X[NODES][0];
ll.y = xy.y < 0 ? -HALF_PI : HALF_PI;
} else {
// find table interval
var i = Math.floor(ll.y * NODES);
if (i < 0) {
i = 0;
} else if (i >= NODES) {
i = NODES - 1;
}
for (;;) {
if (COEFS_Y[i][0] > ll.y) {
--i;
} else if (COEFS_Y[i+1][0] <= ll.y) {
++i;
} else {
break;
}
}
// linear interpolation in 5 degree interval
var coefs = COEFS_Y[i];
var t = 5 * (ll.y - coefs[0]) / (COEFS_Y[i+1][0] - coefs[0]);
// find t so that poly3_val(coefs, t) = ll.y
t = newton_rapshon(function(x) {
return (poly3_val(coefs, x) - ll.y) / poly3_der(coefs, x);
}, t, EPSLN, 100);
ll.x /= poly3_val(COEFS_X[i], t);
ll.y = (5 * i + t) * D2R$1;
if (xy.y < 0) {
ll.y = -ll.y;
}
}
ll.x = adjust_lon(ll.x + this.long0);
return ll;
}
var names$3 = ["Robinson", "robin"];
var robin = {
init: init$4,
forward: forward$3,
inverse: inverse$3,
names: names$3
};
function init$3() {
this.name = 'geocent';
}
function forward$2(p) {
var point = geodeticToGeocentric(p, this.es, this.a);
return point;
}
function inverse$2(p) {
var point = geocentricToGeodetic(p, this.es, this.a, this.b);
return point;
}
var names$2 = ["Geocentric", 'geocentric', "geocent", "Geocent"];
var geocent = {
init: init$3,
forward: forward$2,
inverse: inverse$2,
names: names$2
};
var mode = {
N_POLE: 0,
S_POLE: 1,
EQUIT: 2,
OBLIQ: 3
};
var params = {
h: { def: 100000, num: true }, // default is Karman line, no default in PROJ.7
azi: { def: 0, num: true, degrees: true }, // default is North
tilt: { def: 0, num: true, degrees: true }, // default is Nadir
long0: { def: 0, num: true }, // default is Greenwich, conversion to rad is automatic
lat0: { def: 0, num: true } // default is Equator, conversion to rad is automatic
};
function init$2() {
Object.keys(params).forEach(function (p) {
if (typeof this[p] === "undefined") {
this[p] = params[p].def;
} else if (params[p].num && isNaN(this[p])) {
throw new Error("Invalid parameter value, must be numeric " + p + " = " + this[p]);
} else if (params[p].num) {
this[p] = parseFloat(this[p]);
}
if (params[p].degrees) {
this[p] = this[p] * D2R$1;
}
}.bind(this));
if (Math.abs((Math.abs(this.lat0) - HALF_PI)) < EPSLN) {
this.mode = this.lat0 < 0 ? mode.S_POLE : mode.N_POLE;
} else if (Math.abs(this.lat0) < EPSLN) {
this.mode = mode.EQUIT;
} else {
this.mode = mode.OBLIQ;
this.sinph0 = Math.sin(this.lat0);
this.cosph0 = Math.cos(this.lat0);
}
this.pn1 = this.h / this.a; // Normalize relative to the Earth's radius
if (this.pn1 <= 0 || this.pn1 > 1e10) {
throw new Error("Invalid height");
}
this.p = 1 + this.pn1;
this.rp = 1 / this.p;
this.h1 = 1 / this.pn1;
this.pfact = (this.p + 1) * this.h1;
this.es = 0;
var omega = this.tilt;
var gamma = this.azi;
this.cg = Math.cos(gamma);
this.sg = Math.sin(gamma);
this.cw = Math.cos(omega);
this.sw = Math.sin(omega);
}
function forward$1(p) {
p.x -= this.long0;
var sinphi = Math.sin(p.y);
var cosphi = Math.cos(p.y);
var coslam = Math.cos(p.x);
var x, y;
switch (this.mode) {
case mode.OBLIQ:
y = this.sinph0 * sinphi + this.cosph0 * cosphi * coslam;
break;
case mode.EQUIT:
y = cosphi * coslam;
break;
case mode.S_POLE:
y = -sinphi;
break;
case mode.N_POLE:
y = sinphi;
break;
}
y = this.pn1 / (this.p - y);
x = y * cosphi * Math.sin(p.x);
switch (this.mode) {
case mode.OBLIQ:
y *= this.cosph0 * sinphi - this.sinph0 * cosphi * coslam;
break;
case mode.EQUIT:
y *= sinphi;
break;
case mode.N_POLE:
y *= -(cosphi * coslam);
break;
case mode.S_POLE:
y *= cosphi * coslam;
break;
}
// Tilt
var yt, ba;
yt = y * this.cg + x * this.sg;
ba = 1 / (yt * this.sw * this.h1 + this.cw);
x = (x * this.cg - y * this.sg) * this.cw * ba;
y = yt * ba;
p.x = x * this.a;
p.y = y * this.a;
return p;
}
function inverse$1(p) {
p.x /= this.a;
p.y /= this.a;
var r = { x: p.x, y: p.y };
// Un-Tilt
var bm, bq, yt;
yt = 1 / (this.pn1 - p.y * this.sw);
bm = this.pn1 * p.x * yt;
bq = this.pn1 * p.y * this.cw * yt;
p.x = bm * this.cg + bq * this.sg;
p.y = bq * this.cg - bm * this.sg;
var rh = hypot(p.x, p.y);
if (Math.abs(rh) < EPSLN) {
r.x = 0;
r.y = p.y;
} else {
var cosz, sinz;
sinz = 1 - rh * rh * this.pfact;
sinz = (this.p - Math.sqrt(sinz)) / (this.pn1 / rh + rh / this.pn1);
cosz = Math.sqrt(1 - sinz * sinz);
switch (this.mode) {
case mode.OBLIQ:
r.y = Math.asin(cosz * this.sinph0 + p.y * sinz * this.cosph0 / rh);
p.y = (cosz - this.sinph0 * Math.sin(r.y)) * rh;
p.x *= sinz * this.cosph0;
break;
case mode.EQUIT:
r.y = Math.asin(p.y * sinz / rh);
p.y = cosz * rh;
p.x *= sinz;
break;
case mode.N_POLE:
r.y = Math.asin(cosz);
p.y = -p.y;
break;
case mode.S_POLE:
r.y = -Math.asin(cosz);
break;
}
r.x = Math.atan2(p.x, p.y);
}
p.x = r.x + this.long0;
p.y = r.y;
return p;
}
var names$1 = ["Tilted_Perspective", "tpers"];
var tpers = {
init: init$2,
forward: forward$1,
inverse: inverse$1,
names: names$1
};
function init$1() {
this.flip_axis = (this.sweep === 'x' ? 1 : 0);
this.h = Number(this.h);
this.radius_g_1 = this.h / this.a;
if (this.radius_g_1 <= 0 || this.radius_g_1 > 1e10) {
throw new Error();
}
this.radius_g = 1.0 + this.radius_g_1;
this.C = this.radius_g * this.radius_g - 1.0;
if (this.es !== 0.0) {
var one_es = 1.0 - this.es;
var rone_es = 1 / one_es;
this.radius_p = Math.sqrt(one_es);
this.radius_p2 = one_es;
this.radius_p_inv2 = rone_es;
this.shape = 'ellipse'; // Use as a condition in the forward and inverse functions.
} else {
this.radius_p = 1.0;
this.radius_p2 = 1.0;
this.radius_p_inv2 = 1.0;
this.shape = 'sphere'; // Use as a condition in the forward and inverse functions.
}
if (!this.title) {
this.title = "Geostationary Satellite View";
}
}
function forward(p) {
var lon = p.x;
var lat = p.y;
var tmp, v_x, v_y, v_z;
lon = lon - this.long0;
if (this.shape === 'ellipse') {
lat = Math.atan(this.radius_p2 * Math.tan(lat));
var r = this.radius_p / hypot(this.radius_p * Math.cos(lat), Math.sin(lat));
v_x = r * Math.cos(lon) * Math.cos(lat);
v_y = r * Math.sin(lon) * Math.cos(lat);
v_z = r * Math.sin(lat);
if (((this.radius_g - v_x) * v_x - v_y * v_y - v_z * v_z * this.radius_p_inv2) < 0.0) {
p.x = Number.NaN;
p.y = Number.NaN;
return p;
}
tmp = this.radius_g - v_x;
if (this.flip_axis) {
p.x = this.radius_g_1 * Math.atan(v_y / hypot(v_z, tmp));
p.y = this.radius_g_1 * Math.atan(v_z / tmp);
} else {
p.x = this.radius_g_1 * Math.atan(v_y / tmp);
p.y = this.radius_g_1 * Math.atan(v_z / hypot(v_y, tmp));
}
} else if (this.shape === 'sphere') {
tmp = Math.cos(lat);
v_x = Math.cos(lon) * tmp;
v_y = Math.sin(lon) * tmp;
v_z = Math.sin(lat);
tmp = this.radius_g - v_x;
if (this.flip_axis) {
p.x = this.radius_g_1 * Math.atan(v_y / hypot(v_z, tmp));
p.y = this.radius_g_1 * Math.atan(v_z / tmp);
} else {
p.x = this.radius_g_1 * Math.atan(v_y / tmp);
p.y = this.radius_g_1 * Math.atan(v_z / hypot(v_y, tmp));
}
}
p.x = p.x * this.a;
p.y = p.y * this.a;
return p;
}
function inverse(p) {
var v_x = -1.0;
var v_y = 0.0;
var v_z = 0.0;
var a, b, det, k;
p.x = p.x / this.a;
p.y = p.y / this.a;
if (this.shape === 'ellipse') {
if (this.flip_axis) {
v_z = Math.tan(p.y / this.radius_g_1);
v_y = Math.tan(p.x / this.radius_g_1) * hypot(1.0, v_z);
} else {
v_y = Math.tan(p.x / this.radius_g_1);
v_z = Math.tan(p.y / this.radius_g_1) * hypot(1.0, v_y);
}
var v_zp = v_z / this.radius_p;
a = v_y * v_y + v_zp * v_zp + v_x * v_x;
b = 2 * this.radius_g * v_x;
det = (b * b) - 4 * a * this.C;
if (det < 0.0) {
p.x = Number.NaN;
p.y = Number.NaN;
return p;
}
k = (-b - Math.sqrt(det)) / (2.0 * a);
v_x = this.radius_g + k * v_x;
v_y *= k;
v_z *= k;
p.x = Math.atan2(v_y, v_x);
p.y = Math.atan(v_z * Math.cos(p.x) / v_x);
p.y = Math.atan(this.radius_p_inv2 * Math.tan(p.y));
} else if (this.shape === 'sphere') {
if (this.flip_axis) {
v_z = Math.tan(p.y / this.radius_g_1);
v_y = Math.tan(p.x / this.radius_g_1) * Math.sqrt(1.0 + v_z * v_z);
} else {
v_y = Math.tan(p.x / this.radius_g_1);
v_z = Math.tan(p.y / this.radius_g_1) * Math.sqrt(1.0 + v_y * v_y);
}
a = v_y * v_y + v_z * v_z + v_x * v_x;
b = 2 * this.radius_g * v_x;
det = (b * b) - 4 * a * this.C;
if (det < 0.0) {
p.x = Number.NaN;
p.y = Number.NaN;
return p;
}
k = (-b - Math.sqrt(det)) / (2.0 * a);
v_x = this.radius_g + k * v_x;
v_y *= k;
v_z *= k;
p.x = Math.atan2(v_y, v_x);
p.y = Math.atan(v_z * Math.cos(p.x) / v_x);
}
p.x = p.x + this.long0;
return p;
}
var names = ["Geostationary Satellite View", "Geostationary_Satellite", "geos"];
var geos = {
init: init$1,
forward: forward,
inverse: inverse,
names: names,
};
function includedProjections(proj4){
proj4.Proj.projections.add(tmerc);
proj4.Proj.projections.add(etmerc);
proj4.Proj.projections.add(utm);
proj4.Proj.projections.add(sterea);
proj4.Proj.projections.add(stere);
proj4.Proj.projections.add(somerc);
proj4.Proj.projections.add(omerc);
proj4.Proj.projections.add(lcc);
proj4.Proj.projections.add(krovak);
proj4.Proj.projections.add(cass);
proj4.Proj.projections.add(laea);
proj4.Proj.projections.add(aea);
proj4.Proj.projections.add(gnom);
proj4.Proj.projections.add(cea);
proj4.Proj.projections.add(eqc);
proj4.Proj.projections.add(poly);
proj4.Proj.projections.add(nzmg);
proj4.Proj.projections.add(mill);
proj4.Proj.projections.add(sinu);
proj4.Proj.projections.add(moll);
proj4.Proj.projections.add(eqdc);
proj4.Proj.projections.add(vandg);
proj4.Proj.projections.add(aeqd);
proj4.Proj.projections.add(ortho);
proj4.Proj.projections.add(qsc);
proj4.Proj.projections.add(robin);
proj4.Proj.projections.add(geocent);
proj4.Proj.projections.add(tpers);
proj4.Proj.projections.add(geos);
}
proj4.defaultDatum = 'WGS84'; //default datum
proj4.Proj = Projection;
proj4.WGS84 = new proj4.Proj('WGS84');
proj4.Point = Point;
proj4.toPoint = common;
proj4.defs = defs;
proj4.nadgrid = nadgrid;
proj4.transform = transform;
proj4.mgrs = mgrs;
proj4.version = '__VERSION__';
includedProjections(proj4);
var global$1 = (typeof global !== "undefined" ? global :
typeof self !== "undefined" ? self :
typeof window !== "undefined" ? window : {});
var lookup = [];
var revLookup = [];
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array;
var inited = false;
function init () {
inited = true;
var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
for (var i = 0, len = code.length; i < len; ++i) {
lookup[i] = code[i];
revLookup[code.charCodeAt(i)] = i;
}
revLookup['-'.charCodeAt(0)] = 62;
revLookup['_'.charCodeAt(0)] = 63;
}
function toByteArray (b64) {
if (!inited) {
init();
}
var i, j, l, tmp, placeHolders, arr;
var len = b64.length;
if (len % 4 > 0) {
throw new Error('Invalid string. Length must be a multiple of 4')
}
// the number of equal signs (place holders)
// if there are two placeholders, than the two characters before it
// represent one byte
// if there is only one, then the three characters before it represent 2 bytes
// this is just a cheap hack to not do indexOf twice
placeHolders = b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0;
// base64 is 4/3 + up to two characters of the original data
arr = new Arr(len * 3 / 4 - placeHolders);
// if there are placeholders, only get up to the last complete 4 chars
l = placeHolders > 0 ? len - 4 : len;
var L = 0;
for (i = 0, j = 0; i < l; i += 4, j += 3) {
tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)];
arr[L++] = (tmp >> 16) & 0xFF;
arr[L++] = (tmp >> 8) & 0xFF;
arr[L++] = tmp & 0xFF;
}
if (placeHolders === 2) {
tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4);
arr[L++] = tmp & 0xFF;
} else if (placeHolders === 1) {
tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2);
arr[L++] = (tmp >> 8) & 0xFF;
arr[L++] = tmp & 0xFF;
}
return arr
}
function tripletToBase64 (num) {
return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
}
function encodeChunk (uint8, start, end) {
var tmp;
var output = [];
for (var i = start; i < end; i += 3) {
tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2]);
output.push(tripletToBase64(tmp));
}
return output.join('')
}
function fromByteArray (uint8) {
if (!inited) {
init();
}
var tmp;
var len = uint8.length;
var extraBytes = len % 3; // if we have 1 byte left, pad 2 bytes
var output = '';
var parts = [];
var maxChunkLength = 16383; // must be multiple of 3
// go through the array every three bytes, we'll deal with trailing stuff later
for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)));
}
// pad the end with zeros, but make sure to not forget the extra bytes
if (extraBytes === 1) {
tmp = uint8[len - 1];
output += lookup[tmp >> 2];
output += lookup[(tmp << 4) & 0x3F];
output += '==';
} else if (extraBytes === 2) {
tmp = (uint8[len - 2] << 8) + (uint8[len - 1]);
output += lookup[tmp >> 10];
output += lookup[(tmp >> 4) & 0x3F];
output += lookup[(tmp << 2) & 0x3F];
output += '=';
}
parts.push(output);
return parts.join('')
}
function read (buffer, offset, isLE, mLen, nBytes) {
var e, m;
var eLen = nBytes * 8 - mLen - 1;
var eMax = (1 << eLen) - 1;
var eBias = eMax >> 1;
var nBits = -7;
var i = isLE ? (nBytes - 1) : 0;
var d = isLE ? -1 : 1;
var s = buffer[offset + i];
i += d;
e = s & ((1 << (-nBits)) - 1);
s >>= (-nBits);
nBits += eLen;
for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
m = e & ((1 << (-nBits)) - 1);
e >>= (-nBits);
nBits += mLen;
for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
if (e === 0) {
e = 1 - eBias;
} else if (e === eMax) {
return m ? NaN : ((s ? -1 : 1) * Infinity)
} else {
m = m + Math.pow(2, mLen);
e = e - eBias;
}
return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
}
function write (buffer, value, offset, isLE, mLen, nBytes) {
var e, m, c;
var eLen = nBytes * 8 - mLen - 1;
var eMax = (1 << eLen) - 1;
var eBias = eMax >> 1;
var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0);
var i = isLE ? 0 : (nBytes - 1);
var d = isLE ? 1 : -1;
var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0;
value = Math.abs(value);
if (isNaN(value) || value === Infinity) {
m = isNaN(value) ? 1 : 0;
e = eMax;
} else {
e = Math.floor(Math.log(value) / Math.LN2);
if (value * (c = Math.pow(2, -e)) < 1) {
e--;
c *= 2;
}
if (e + eBias >= 1) {
value += rt / c;
} else {
value += rt * Math.pow(2, 1 - eBias);
}
if (value * c >= 2) {
e++;
c /= 2;
}
if (e + eBias >= eMax) {
m = 0;
e = eMax;
} else if (e + eBias >= 1) {
m = (value * c - 1) * Math.pow(2, mLen);
e = e + eBias;
} else {
m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen);
e = 0;
}
}
for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
e = (e << mLen) | m;
eLen += mLen;
for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
buffer[offset + i - d] |= s * 128;
}
var toString = {}.toString;
var isArray = Array.isArray || function (arr) {
return toString.call(arr) == '[object Array]';
};
/*!
* The buffer module from node.js, for the browser.
*
* @author Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
* @license MIT
*/
var INSPECT_MAX_BYTES = 50;
/**
* If `Buffer.TYPED_ARRAY_SUPPORT`:
* === true Use Uint8Array implementation (fastest)
* === false Use Object implementation (most compatible, even IE6)
*
* Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
* Opera 11.6+, iOS 4.2+.
*
* Due to various browser bugs, sometimes the Object implementation will be used even
* when the browser supports typed arrays.
*
* Note:
*
* - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
* See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
*
* - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
*
* - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
* incorrect length in some situations.
* We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
* get the Object implementation, which is slower but behaves correctly.
*/
Buffer.TYPED_ARRAY_SUPPORT = global$1.TYPED_ARRAY_SUPPORT !== undefined
? global$1.TYPED_ARRAY_SUPPORT
: true;
/*
* Export kMaxLength after typed array support is determined.
*/
kMaxLength();
function kMaxLength () {
return Buffer.TYPED_ARRAY_SUPPORT
? 0x7fffffff
: 0x3fffffff
}
function createBuffer (that, length) {
if (kMaxLength() < length) {
throw new RangeError('Invalid typed array length')
}
if (Buffer.TYPED_ARRAY_SUPPORT) {
// Return an augmented `Uint8Array` instance, for best performance
that = new Uint8Array(length);
that.__proto__ = Buffer.prototype;
} else {
// Fallback: Return an object instance of the Buffer class
if (that === null) {
that = new Buffer(length);
}
that.length = length;
}
return that
}
/**
* The Buffer constructor returns instances of `Uint8Array` that have their
* prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
* `Uint8Array`, so the returned instances will have all the node `Buffer` methods
* and the `Uint8Array` methods. Square bracket notation works as expected -- it
* returns a single octet.
*
* The `Uint8Array` prototype remains unmodified.
*/
function Buffer (arg, encodingOrOffset, length) {
if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {
return new Buffer(arg, encodingOrOffset, length)
}
// Common case.
if (typeof arg === 'number') {
if (typeof encodingOrOffset === 'string') {
throw new Error(
'If encoding is specified then the first argument must be a string'
)
}
return allocUnsafe(this, arg)
}
return from(this, arg, encodingOrOffset, length)
}
Buffer.poolSize = 8192; // not used by this implementation
// TODO: Legacy, not needed anymore. Remove in next major version.
Buffer._augment = function (arr) {
arr.__proto__ = Buffer.prototype;
return arr
};
function from (that, value, encodingOrOffset, length) {
if (typeof value === 'number') {
throw new TypeError('"value" argument must not be a number')
}
if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
return fromArrayBuffer(that, value, encodingOrOffset, length)
}
if (typeof value === 'string') {
return fromString(that, value, encodingOrOffset)
}
return fromObject(that, value)
}
/**
* Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
* if value is a number.
* Buffer.from(str[, encoding])
* Buffer.from(array)
* Buffer.from(buffer)
* Buffer.from(arrayBuffer[, byteOffset[, length]])
**/
Buffer.from = function (value, encodingOrOffset, length) {
return from(null, value, encodingOrOffset, length)
};
if (Buffer.TYPED_ARRAY_SUPPORT) {
Buffer.prototype.__proto__ = Uint8Array.prototype;
Buffer.__proto__ = Uint8Array;
}
function assertSize (size) {
if (typeof size !== 'number') {
throw new TypeError('"size" argument must be a number')
} else if (size < 0) {
throw new RangeError('"size" argument must not be negative')
}
}
function alloc (that, size, fill, encoding) {
assertSize(size);
if (size <= 0) {
return createBuffer(that, size)
}
if (fill !== undefined) {
// Only pay attention to encoding if it's a string. This
// prevents accidentally sending in a number that would
// be interpretted as a start offset.
return typeof encoding === 'string'
? createBuffer(that, size).fill(fill, encoding)
: createBuffer(that, size).fill(fill)
}
return createBuffer(that, size)
}
/**
* Creates a new filled Buffer instance.
* alloc(size[, fill[, encoding]])
**/
Buffer.alloc = function (size, fill, encoding) {
return alloc(null, size, fill, encoding)
};
function allocUnsafe (that, size) {
assertSize(size);
that = createBuffer(that, size < 0 ? 0 : checked(size) | 0);
if (!Buffer.TYPED_ARRAY_SUPPORT) {
for (var i = 0; i < size; ++i) {
that[i] = 0;
}
}
return that
}
/**
* Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
* */
Buffer.allocUnsafe = function (size) {
return allocUnsafe(null, size)
};
/**
* Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
*/
Buffer.allocUnsafeSlow = function (size) {
return allocUnsafe(null, size)
};
function fromString (that, string, encoding) {
if (typeof encoding !== 'string' || encoding === '') {
encoding = 'utf8';
}
if (!Buffer.isEncoding(encoding)) {
throw new TypeError('"encoding" must be a valid string encoding')
}
var length = byteLength(string, encoding) | 0;
that = createBuffer(that, length);
var actual = that.write(string, encoding);
if (actual !== length) {
// Writing a hex string, for example, that contains invalid characters will
// cause everything after the first invalid character to be ignored. (e.g.
// 'abxxcd' will be treated as 'ab')
that = that.slice(0, actual);
}
return that
}
function fromArrayLike (that, array) {
var length = array.length < 0 ? 0 : checked(array.length) | 0;
that = createBuffer(that, length);
for (var i = 0; i < length; i += 1) {
that[i] = array[i] & 255;
}
return that
}
function fromArrayBuffer (that, array, byteOffset, length) {
array.byteLength; // this throws if `array` is not a valid ArrayBuffer
if (byteOffset < 0 || array.byteLength < byteOffset) {
throw new RangeError('\'offset\' is out of bounds')
}
if (array.byteLength < byteOffset + (length || 0)) {
throw new RangeError('\'length\' is out of bounds')
}
if (byteOffset === undefined && length === undefined) {
array = new Uint8Array(array);
} else if (length === undefined) {
array = new Uint8Array(array, byteOffset);
} else {
array = new Uint8Array(array, byteOffset, length);
}
if (Buffer.TYPED_ARRAY_SUPPORT) {
// Return an augmented `Uint8Array` instance, for best performance
that = array;
that.__proto__ = Buffer.prototype;
} else {
// Fallback: Return an object instance of the Buffer class
that = fromArrayLike(that, array);
}
return that
}
function fromObject (that, obj) {
if (internalIsBuffer(obj)) {
var len = checked(obj.length) | 0;
that = createBuffer(that, len);
if (that.length === 0) {
return that
}
obj.copy(that, 0, 0, len);
return that
}
if (obj) {
if ((typeof ArrayBuffer !== 'undefined' &&
obj.buffer instanceof ArrayBuffer) || 'length' in obj) {
if (typeof obj.length !== 'number' || isnan(obj.length)) {
return createBuffer(that, 0)
}
return fromArrayLike(that, obj)
}
if (obj.type === 'Buffer' && isArray(obj.data)) {
return fromArrayLike(that, obj.data)
}
}
throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
}
function checked (length) {
// Note: cannot use `length < kMaxLength()` here because that fails when
// length is NaN (which is otherwise coerced to zero.)
if (length >= kMaxLength()) {
throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
'size: 0x' + kMaxLength().toString(16) + ' bytes')
}
return length | 0
}
Buffer.isBuffer = isBuffer;
function internalIsBuffer (b) {
return !!(b != null && b._isBuffer)
}
Buffer.compare = function compare (a, b) {
if (!internalIsBuffer(a) || !internalIsBuffer(b)) {
throw new TypeError('Arguments must be Buffers')
}
if (a === b) return 0
var x = a.length;
var y = b.length;
for (var i = 0, len = Math.min(x, y); i < len; ++i) {
if (a[i] !== b[i]) {
x = a[i];
y = b[i];
break
}
}
if (x < y) return -1
if (y < x) return 1
return 0
};
Buffer.isEncoding = function isEncoding (encoding) {
switch (String(encoding).toLowerCase()) {
case 'hex':
case 'utf8':
case 'utf-8':
case 'ascii':
case 'latin1':
case 'binary':
case 'base64':
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return true
default:
return false
}
};
Buffer.concat = function concat (list, length) {
if (!isArray(list)) {
throw new TypeError('"list" argument must be an Array of Buffers')
}
if (list.length === 0) {
return Buffer.alloc(0)
}
var i;
if (length === undefined) {
length = 0;
for (i = 0; i < list.length; ++i) {
length += list[i].length;
}
}
var buffer = Buffer.allocUnsafe(length);
var pos = 0;
for (i = 0; i < list.length; ++i) {
var buf = list[i];
if (!internalIsBuffer(buf)) {
throw new TypeError('"list" argument must be an Array of Buffers')
}
buf.copy(buffer, pos);
pos += buf.length;
}
return buffer
};
function byteLength (string, encoding) {
if (internalIsBuffer(string)) {
return string.length
}
if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&
(ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {
return string.byteLength
}
if (typeof string !== 'string') {
string = '' + string;
}
var len = string.length;
if (len === 0) return 0
// Use a for loop to avoid recursion
var loweredCase = false;
for (;;) {
switch (encoding) {
case 'ascii':
case 'latin1':
case 'binary':
return len
case 'utf8':
case 'utf-8':
case undefined:
return utf8ToBytes(string).length
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return len * 2
case 'hex':
return len >>> 1
case 'base64':
return base64ToBytes(string).length
default:
if (loweredCase) return utf8ToBytes(string).length // assume utf8
encoding = ('' + encoding).toLowerCase();
loweredCase = true;
}
}
}
Buffer.byteLength = byteLength;
function slowToString (encoding, start, end) {
var loweredCase = false;
// No need to verify that "this.length <= MAX_UINT32" since it's a read-only
// property of a typed array.
// This behaves neither like String nor Uint8Array in that we set start/end
// to their upper/lower bounds if the value passed is out of range.
// undefined is handled specially as per ECMA-262 6th Edition,
// Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
if (start === undefined || start < 0) {
start = 0;
}
// Return early if start > this.length. Done here to prevent potential uint32
// coercion fail below.
if (start > this.length) {
return ''
}
if (end === undefined || end > this.length) {
end = this.length;
}
if (end <= 0) {
return ''
}
// Force coersion to uint32. This will also coerce falsey/NaN values to 0.
end >>>= 0;
start >>>= 0;
if (end <= start) {
return ''
}
if (!encoding) encoding = 'utf8';
while (true) {
switch (encoding) {
case 'hex':
return hexSlice(this, start, end)
case 'utf8':
case 'utf-8':
return utf8Slice(this, start, end)
case 'ascii':
return asciiSlice(this, start, end)
case 'latin1':
case 'binary':
return latin1Slice(this, start, end)
case 'base64':
return base64Slice(this, start, end)
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return utf16leSlice(this, start, end)
default:
if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
encoding = (encoding + '').toLowerCase();
loweredCase = true;
}
}
}
// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
// Buffer instances.
Buffer.prototype._isBuffer = true;
function swap (b, n, m) {
var i = b[n];
b[n] = b[m];
b[m] = i;
}
Buffer.prototype.swap16 = function swap16 () {
var len = this.length;
if (len % 2 !== 0) {
throw new RangeError('Buffer size must be a multiple of 16-bits')
}
for (var i = 0; i < len; i += 2) {
swap(this, i, i + 1);
}
return this
};
Buffer.prototype.swap32 = function swap32 () {
var len = this.length;
if (len % 4 !== 0) {
throw new RangeError('Buffer size must be a multiple of 32-bits')
}
for (var i = 0; i < len; i += 4) {
swap(this, i, i + 3);
swap(this, i + 1, i + 2);
}
return this
};
Buffer.prototype.swap64 = function swap64 () {
var len = this.length;
if (len % 8 !== 0) {
throw new RangeError('Buffer size must be a multiple of 64-bits')
}
for (var i = 0; i < len; i += 8) {
swap(this, i, i + 7);
swap(this, i + 1, i + 6);
swap(this, i + 2, i + 5);
swap(this, i + 3, i + 4);
}
return this
};
Buffer.prototype.toString = function toString () {
var length = this.length | 0;
if (length === 0) return ''
if (arguments.length === 0) return utf8Slice(this, 0, length)
return slowToString.apply(this, arguments)
};
Buffer.prototype.equals = function equals (b) {
if (!internalIsBuffer(b)) throw new TypeError('Argument must be a Buffer')
if (this === b) return true
return Buffer.compare(this, b) === 0
};
Buffer.prototype.inspect = function inspect () {
var str = '';
var max = INSPECT_MAX_BYTES;
if (this.length > 0) {
str = this.toString('hex', 0, max).match(/.{2}/g).join(' ');
if (this.length > max) str += ' ... ';
}
return '<Buffer ' + str + '>'
};
Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
if (!internalIsBuffer(target)) {
throw new TypeError('Argument must be a Buffer')
}
if (start === undefined) {
start = 0;
}
if (end === undefined) {
end = target ? target.length : 0;
}
if (thisStart === undefined) {
thisStart = 0;
}
if (thisEnd === undefined) {
thisEnd = this.length;
}
if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
throw new RangeError('out of range index')
}
if (thisStart >= thisEnd && start >= end) {
return 0
}
if (thisStart >= thisEnd) {
return -1
}
if (start >= end) {
return 1
}
start >>>= 0;
end >>>= 0;
thisStart >>>= 0;
thisEnd >>>= 0;
if (this === target) return 0
var x = thisEnd - thisStart;
var y = end - start;
var len = Math.min(x, y);
var thisCopy = this.slice(thisStart, thisEnd);
var targetCopy = target.slice(start, end);
for (var i = 0; i < len; ++i) {
if (thisCopy[i] !== targetCopy[i]) {
x = thisCopy[i];
y = targetCopy[i];
break
}
}
if (x < y) return -1
if (y < x) return 1
return 0
};
// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
//
// Arguments:
// - buffer - a Buffer to search
// - val - a string, Buffer, or number
// - byteOffset - an index into `buffer`; will be clamped to an int32
// - encoding - an optional encoding, relevant is val is a string
// - dir - true for indexOf, false for lastIndexOf
function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
// Empty buffer means no match
if (buffer.length === 0) return -1
// Normalize byteOffset
if (typeof byteOffset === 'string') {
encoding = byteOffset;
byteOffset = 0;
} else if (byteOffset > 0x7fffffff) {
byteOffset = 0x7fffffff;
} else if (byteOffset < -0x80000000) {
byteOffset = -0x80000000;
}
byteOffset = +byteOffset; // Coerce to Number.
if (isNaN(byteOffset)) {
// byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
byteOffset = dir ? 0 : (buffer.length - 1);
}
// Normalize byteOffset: negative offsets start from the end of the buffer
if (byteOffset < 0) byteOffset = buffer.length + byteOffset;
if (byteOffset >= buffer.length) {
if (dir) return -1
else byteOffset = buffer.length - 1;
} else if (byteOffset < 0) {
if (dir) byteOffset = 0;
else return -1
}
// Normalize val
if (typeof val === 'string') {
val = Buffer.from(val, encoding);
}
// Finally, search either indexOf (if dir is true) or lastIndexOf
if (internalIsBuffer(val)) {
// Special case: looking for empty string/buffer always fails
if (val.length === 0) {
return -1
}
return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
} else if (typeof val === 'number') {
val = val & 0xFF; // Search for a byte value [0-255]
if (Buffer.TYPED_ARRAY_SUPPORT &&
typeof Uint8Array.prototype.indexOf === 'function') {
if (dir) {
return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
} else {
return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
}
}
return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
}
throw new TypeError('val must be string, number or Buffer')
}
function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
var indexSize = 1;
var arrLength = arr.length;
var valLength = val.length;
if (encoding !== undefined) {
encoding = String(encoding).toLowerCase();
if (encoding === 'ucs2' || encoding === 'ucs-2' ||
encoding === 'utf16le' || encoding === 'utf-16le') {
if (arr.length < 2 || val.length < 2) {
return -1
}
indexSize = 2;
arrLength /= 2;
valLength /= 2;
byteOffset /= 2;
}
}
function read (buf, i) {
if (indexSize === 1) {
return buf[i]
} else {
return buf.readUInt16BE(i * indexSize)
}
}
var i;
if (dir) {
var foundIndex = -1;
for (i = byteOffset; i < arrLength; i++) {
if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
if (foundIndex === -1) foundIndex = i;
if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
} else {
if (foundIndex !== -1) i -= i - foundIndex;
foundIndex = -1;
}
}
} else {
if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength;
for (i = byteOffset; i >= 0; i--) {
var found = true;
for (var j = 0; j < valLength; j++) {
if (read(arr, i + j) !== read(val, j)) {
found = false;
break
}
}
if (found) return i
}
}
return -1
}
Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
return this.indexOf(val, byteOffset, encoding) !== -1
};
Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
};
Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
};
function hexWrite (buf, string, offset, length) {
offset = Number(offset) || 0;
var remaining = buf.length - offset;
if (!length) {
length = remaining;
} else {
length = Number(length);
if (length > remaining) {
length = remaining;
}
}
// must be an even number of digits
var strLen = string.length;
if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')
if (length > strLen / 2) {
length = strLen / 2;
}
for (var i = 0; i < length; ++i) {
var parsed = parseInt(string.substr(i * 2, 2), 16);
if (isNaN(parsed)) return i
buf[offset + i] = parsed;
}
return i
}
function utf8Write (buf, string, offset, length) {
return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
}
function asciiWrite (buf, string, offset, length) {
return blitBuffer(asciiToBytes(string), buf, offset, length)
}
function latin1Write (buf, string, offset, length) {
return asciiWrite(buf, string, offset, length)
}
function base64Write (buf, string, offset, length) {
return blitBuffer(base64ToBytes(string), buf, offset, length)
}
function ucs2Write (buf, string, offset, length) {
return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
}
Buffer.prototype.write = function write (string, offset, length, encoding) {
// Buffer#write(string)
if (offset === undefined) {
encoding = 'utf8';
length = this.length;
offset = 0;
// Buffer#write(string, encoding)
} else if (length === undefined && typeof offset === 'string') {
encoding = offset;
length = this.length;
offset = 0;
// Buffer#write(string, offset[, length][, encoding])
} else if (isFinite(offset)) {
offset = offset | 0;
if (isFinite(length)) {
length = length | 0;
if (encoding === undefined) encoding = 'utf8';
} else {
encoding = length;
length = undefined;
}
// legacy write(string, encoding, offset, length) - remove in v0.13
} else {
throw new Error(
'Buffer.write(string, encoding, offset[, length]) is no longer supported'
)
}
var remaining = this.length - offset;
if (length === undefined || length > remaining) length = remaining;
if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
throw new RangeError('Attempt to write outside buffer bounds')
}
if (!encoding) encoding = 'utf8';
var loweredCase = false;
for (;;) {
switch (encoding) {
case 'hex':
return hexWrite(this, string, offset, length)
case 'utf8':
case 'utf-8':
return utf8Write(this, string, offset, length)
case 'ascii':
return asciiWrite(this, string, offset, length)
case 'latin1':
case 'binary':
return latin1Write(this, string, offset, length)
case 'base64':
// Warning: maxLength not taken into account in base64Write
return base64Write(this, string, offset, length)
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return ucs2Write(this, string, offset, length)
default:
if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
encoding = ('' + encoding).toLowerCase();
loweredCase = true;
}
}
};
Buffer.prototype.toJSON = function toJSON () {
return {
type: 'Buffer',
data: Array.prototype.slice.call(this._arr || this, 0)
}
};
function base64Slice (buf, start, end) {
if (start === 0 && end === buf.length) {
return fromByteArray(buf)
} else {
return fromByteArray(buf.slice(start, end))
}
}
function utf8Slice (buf, start, end) {
end = Math.min(buf.length, end);
var res = [];
var i = start;
while (i < end) {
var firstByte = buf[i];
var codePoint = null;
var bytesPerSequence = (firstByte > 0xEF) ? 4
: (firstByte > 0xDF) ? 3
: (firstByte > 0xBF) ? 2
: 1;
if (i + bytesPerSequence <= end) {
var secondByte, thirdByte, fourthByte, tempCodePoint;
switch (bytesPerSequence) {
case 1:
if (firstByte < 0x80) {
codePoint = firstByte;
}
break
case 2:
secondByte = buf[i + 1];
if ((secondByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F);
if (tempCodePoint > 0x7F) {
codePoint = tempCodePoint;
}
}
break
case 3:
secondByte = buf[i + 1];
thirdByte = buf[i + 2];
if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F);
if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
codePoint = tempCodePoint;
}
}
break
case 4:
secondByte = buf[i + 1];
thirdByte = buf[i + 2];
fourthByte = buf[i + 3];
if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F);
if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
codePoint = tempCodePoint;
}
}
}
}
if (codePoint === null) {
// we did not generate a valid codePoint so insert a
// replacement char (U+FFFD) and advance only 1 byte
codePoint = 0xFFFD;
bytesPerSequence = 1;
} else if (codePoint > 0xFFFF) {
// encode to utf16 (surrogate pair dance)
codePoint -= 0x10000;
res.push(codePoint >>> 10 & 0x3FF | 0xD800);
codePoint = 0xDC00 | codePoint & 0x3FF;
}
res.push(codePoint);
i += bytesPerSequence;
}
return decodeCodePointsArray(res)
}
// Based on http://stackoverflow.com/a/22747272/680742, the browser with
// the lowest limit is Chrome, with 0x10000 args.
// We go 1 magnitude less, for safety
var MAX_ARGUMENTS_LENGTH = 0x1000;
function decodeCodePointsArray (codePoints) {
var len = codePoints.length;
if (len <= MAX_ARGUMENTS_LENGTH) {
return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
}
// Decode in chunks to avoid "call stack size exceeded".
var res = '';
var i = 0;
while (i < len) {
res += String.fromCharCode.apply(
String,
codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
);
}
return res
}
function asciiSlice (buf, start, end) {
var ret = '';
end = Math.min(buf.length, end);
for (var i = start; i < end; ++i) {
ret += String.fromCharCode(buf[i] & 0x7F);
}
return ret
}
function latin1Slice (buf, start, end) {
var ret = '';
end = Math.min(buf.length, end);
for (var i = start; i < end; ++i) {
ret += String.fromCharCode(buf[i]);
}
return ret
}
function hexSlice (buf, start, end) {
var len = buf.length;
if (!start || start < 0) start = 0;
if (!end || end < 0 || end > len) end = len;
var out = '';
for (var i = start; i < end; ++i) {
out += toHex(buf[i]);
}
return out
}
function utf16leSlice (buf, start, end) {
var bytes = buf.slice(start, end);
var res = '';
for (var i = 0; i < bytes.length; i += 2) {
res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256);
}
return res
}
Buffer.prototype.slice = function slice (start, end) {
var len = this.length;
start = ~~start;
end = end === undefined ? len : ~~end;
if (start < 0) {
start += len;
if (start < 0) start = 0;
} else if (start > len) {
start = len;
}
if (end < 0) {
end += len;
if (end < 0) end = 0;
} else if (end > len) {
end = len;
}
if (end < start) end = start;
var newBuf;
if (Buffer.TYPED_ARRAY_SUPPORT) {
newBuf = this.subarray(start, end);
newBuf.__proto__ = Buffer.prototype;
} else {
var sliceLen = end - start;
newBuf = new Buffer(sliceLen, undefined);
for (var i = 0; i < sliceLen; ++i) {
newBuf[i] = this[i + start];
}
}
return newBuf
};
/*
* Need to make sure that buffer isn't trying to write out of bounds.
*/
function checkOffset (offset, ext, length) {
if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
}
Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
offset = offset | 0;
byteLength = byteLength | 0;
if (!noAssert) checkOffset(offset, byteLength, this.length);
var val = this[offset];
var mul = 1;
var i = 0;
while (++i < byteLength && (mul *= 0x100)) {
val += this[offset + i] * mul;
}
return val
};
Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
offset = offset | 0;
byteLength = byteLength | 0;
if (!noAssert) {
checkOffset(offset, byteLength, this.length);
}
var val = this[offset + --byteLength];
var mul = 1;
while (byteLength > 0 && (mul *= 0x100)) {
val += this[offset + --byteLength] * mul;
}
return val
};
Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
if (!noAssert) checkOffset(offset, 1, this.length);
return this[offset]
};
Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
if (!noAssert) checkOffset(offset, 2, this.length);
return this[offset] | (this[offset + 1] << 8)
};
Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
if (!noAssert) checkOffset(offset, 2, this.length);
return (this[offset] << 8) | this[offset + 1]
};
Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
if (!noAssert) checkOffset(offset, 4, this.length);
return ((this[offset]) |
(this[offset + 1] << 8) |
(this[offset + 2] << 16)) +
(this[offset + 3] * 0x1000000)
};
Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
if (!noAssert) checkOffset(offset, 4, this.length);
return (this[offset] * 0x1000000) +
((this[offset + 1] << 16) |
(this[offset + 2] << 8) |
this[offset + 3])
};
Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
offset = offset | 0;
byteLength = byteLength | 0;
if (!noAssert) checkOffset(offset, byteLength, this.length);
var val = this[offset];
var mul = 1;
var i = 0;
while (++i < byteLength && (mul *= 0x100)) {
val += this[offset + i] * mul;
}
mul *= 0x80;
if (val >= mul) val -= Math.pow(2, 8 * byteLength);
return val
};
Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
offset = offset | 0;
byteLength = byteLength | 0;
if (!noAssert) checkOffset(offset, byteLength, this.length);
var i = byteLength;
var mul = 1;
var val = this[offset + --i];
while (i > 0 && (mul *= 0x100)) {
val += this[offset + --i] * mul;
}
mul *= 0x80;
if (val >= mul) val -= Math.pow(2, 8 * byteLength);
return val
};
Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
if (!noAssert) checkOffset(offset, 1, this.length);
if (!(this[offset] & 0x80)) return (this[offset])
return ((0xff - this[offset] + 1) * -1)
};
Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
if (!noAssert) checkOffset(offset, 2, this.length);
var val = this[offset] | (this[offset + 1] << 8);
return (val & 0x8000) ? val | 0xFFFF0000 : val
};
Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
if (!noAssert) checkOffset(offset, 2, this.length);
var val = this[offset + 1] | (this[offset] << 8);
return (val & 0x8000) ? val | 0xFFFF0000 : val
};
Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
if (!noAssert) checkOffset(offset, 4, this.length);
return (this[offset]) |
(this[offset + 1] << 8) |
(this[offset + 2] << 16) |
(this[offset + 3] << 24)
};
Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
if (!noAssert) checkOffset(offset, 4, this.length);
return (this[offset] << 24) |
(this[offset + 1] << 16) |
(this[offset + 2] << 8) |
(this[offset + 3])
};
Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
if (!noAssert) checkOffset(offset, 4, this.length);
return read(this, offset, true, 23, 4)
};
Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
if (!noAssert) checkOffset(offset, 4, this.length);
return read(this, offset, false, 23, 4)
};
Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
if (!noAssert) checkOffset(offset, 8, this.length);
return read(this, offset, true, 52, 8)
};
Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
if (!noAssert) checkOffset(offset, 8, this.length);
return read(this, offset, false, 52, 8)
};
function checkInt (buf, value, offset, ext, max, min) {
if (!internalIsBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
if (offset + ext > buf.length) throw new RangeError('Index out of range')
}
Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
value = +value;
offset = offset | 0;
byteLength = byteLength | 0;
if (!noAssert) {
var maxBytes = Math.pow(2, 8 * byteLength) - 1;
checkInt(this, value, offset, byteLength, maxBytes, 0);
}
var mul = 1;
var i = 0;
this[offset] = value & 0xFF;
while (++i < byteLength && (mul *= 0x100)) {
this[offset + i] = (value / mul) & 0xFF;
}
return offset + byteLength
};
Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
value = +value;
offset = offset | 0;
byteLength = byteLength | 0;
if (!noAssert) {
var maxBytes = Math.pow(2, 8 * byteLength) - 1;
checkInt(this, value, offset, byteLength, maxBytes, 0);
}
var i = byteLength - 1;
var mul = 1;
this[offset + i] = value & 0xFF;
while (--i >= 0 && (mul *= 0x100)) {
this[offset + i] = (value / mul) & 0xFF;
}
return offset + byteLength
};
Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
value = +value;
offset = offset | 0;
if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0);
if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value);
this[offset] = (value & 0xff);
return offset + 1
};
function objectWriteUInt16 (buf, value, offset, littleEndian) {
if (value < 0) value = 0xffff + value + 1;
for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {
buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
(littleEndian ? i : 1 - i) * 8;
}
}
Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
value = +value;
offset = offset | 0;
if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0);
if (Buffer.TYPED_ARRAY_SUPPORT) {
this[offset] = (value & 0xff);
this[offset + 1] = (value >>> 8);
} else {
objectWriteUInt16(this, value, offset, true);
}
return offset + 2
};
Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
value = +value;
offset = offset | 0;
if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0);
if (Buffer.TYPED_ARRAY_SUPPORT) {
this[offset] = (value >>> 8);
this[offset + 1] = (value & 0xff);
} else {
objectWriteUInt16(this, value, offset, false);
}
return offset + 2
};
function objectWriteUInt32 (buf, value, offset, littleEndian) {
if (value < 0) value = 0xffffffff + value + 1;
for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {
buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff;
}
}
Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
value = +value;
offset = offset | 0;
if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0);
if (Buffer.TYPED_ARRAY_SUPPORT) {
this[offset + 3] = (value >>> 24);
this[offset + 2] = (value >>> 16);
this[offset + 1] = (value >>> 8);
this[offset] = (value & 0xff);
} else {
objectWriteUInt32(this, value, offset, true);
}
return offset + 4
};
Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
value = +value;
offset = offset | 0;
if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0);
if (Buffer.TYPED_ARRAY_SUPPORT) {
this[offset] = (value >>> 24);
this[offset + 1] = (value >>> 16);
this[offset + 2] = (value >>> 8);
this[offset + 3] = (value & 0xff);
} else {
objectWriteUInt32(this, value, offset, false);
}
return offset + 4
};
Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
value = +value;
offset = offset | 0;
if (!noAssert) {
var limit = Math.pow(2, 8 * byteLength - 1);
checkInt(this, value, offset, byteLength, limit - 1, -limit);
}
var i = 0;
var mul = 1;
var sub = 0;
this[offset] = value & 0xFF;
while (++i < byteLength && (mul *= 0x100)) {
if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
sub = 1;
}
this[offset + i] = ((value / mul) >> 0) - sub & 0xFF;
}
return offset + byteLength
};
Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
value = +value;
offset = offset | 0;
if (!noAssert) {
var limit = Math.pow(2, 8 * byteLength - 1);
checkInt(this, value, offset, byteLength, limit - 1, -limit);
}
var i = byteLength - 1;
var mul = 1;
var sub = 0;
this[offset + i] = value & 0xFF;
while (--i >= 0 && (mul *= 0x100)) {
if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
sub = 1;
}
this[offset + i] = ((value / mul) >> 0) - sub & 0xFF;
}
return offset + byteLength
};
Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
value = +value;
offset = offset | 0;
if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80);
if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value);
if (value < 0) value = 0xff + value + 1;
this[offset] = (value & 0xff);
return offset + 1
};
Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
value = +value;
offset = offset | 0;
if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000);
if (Buffer.TYPED_ARRAY_SUPPORT) {
this[offset] = (value & 0xff);
this[offset + 1] = (value >>> 8);
} else {
objectWriteUInt16(this, value, offset, true);
}
return offset + 2
};
Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
value = +value;
offset = offset | 0;
if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000);
if (Buffer.TYPED_ARRAY_SUPPORT) {
this[offset] = (value >>> 8);
this[offset + 1] = (value & 0xff);
} else {
objectWriteUInt16(this, value, offset, false);
}
return offset + 2
};
Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
value = +value;
offset = offset | 0;
if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000);
if (Buffer.TYPED_ARRAY_SUPPORT) {
this[offset] = (value & 0xff);
this[offset + 1] = (value >>> 8);
this[offset + 2] = (value >>> 16);
this[offset + 3] = (value >>> 24);
} else {
objectWriteUInt32(this, value, offset, true);
}
return offset + 4
};
Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
value = +value;
offset = offset | 0;
if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000);
if (value < 0) value = 0xffffffff + value + 1;
if (Buffer.TYPED_ARRAY_SUPPORT) {
this[offset] = (value >>> 24);
this[offset + 1] = (value >>> 16);
this[offset + 2] = (value >>> 8);
this[offset + 3] = (value & 0xff);
} else {
objectWriteUInt32(this, value, offset, false);
}
return offset + 4
};
function checkIEEE754 (buf, value, offset, ext, max, min) {
if (offset + ext > buf.length) throw new RangeError('Index out of range')
if (offset < 0) throw new RangeError('Index out of range')
}
function writeFloat (buf, value, offset, littleEndian, noAssert) {
if (!noAssert) {
checkIEEE754(buf, value, offset, 4);
}
write(buf, value, offset, littleEndian, 23, 4);
return offset + 4
}
Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
return writeFloat(this, value, offset, true, noAssert)
};
Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
return writeFloat(this, value, offset, false, noAssert)
};
function writeDouble (buf, value, offset, littleEndian, noAssert) {
if (!noAssert) {
checkIEEE754(buf, value, offset, 8);
}
write(buf, value, offset, littleEndian, 52, 8);
return offset + 8
}
Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
return writeDouble(this, value, offset, true, noAssert)
};
Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
return writeDouble(this, value, offset, false, noAssert)
};
// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function copy (target, targetStart, start, end) {
if (!start) start = 0;
if (!end && end !== 0) end = this.length;
if (targetStart >= target.length) targetStart = target.length;
if (!targetStart) targetStart = 0;
if (end > 0 && end < start) end = start;
// Copy 0 bytes; we're done
if (end === start) return 0
if (target.length === 0 || this.length === 0) return 0
// Fatal error conditions
if (targetStart < 0) {
throw new RangeError('targetStart out of bounds')
}
if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
if (end < 0) throw new RangeError('sourceEnd out of bounds')
// Are we oob?
if (end > this.length) end = this.length;
if (target.length - targetStart < end - start) {
end = target.length - targetStart + start;
}
var len = end - start;
var i;
if (this === target && start < targetStart && targetStart < end) {
// descending copy from end
for (i = len - 1; i >= 0; --i) {
target[i + targetStart] = this[i + start];
}
} else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
// ascending copy from start
for (i = 0; i < len; ++i) {
target[i + targetStart] = this[i + start];
}
} else {
Uint8Array.prototype.set.call(
target,
this.subarray(start, start + len),
targetStart
);
}
return len
};
// Usage:
// buffer.fill(number[, offset[, end]])
// buffer.fill(buffer[, offset[, end]])
// buffer.fill(string[, offset[, end]][, encoding])
Buffer.prototype.fill = function fill (val, start, end, encoding) {
// Handle string cases:
if (typeof val === 'string') {
if (typeof start === 'string') {
encoding = start;
start = 0;
end = this.length;
} else if (typeof end === 'string') {
encoding = end;
end = this.length;
}
if (val.length === 1) {
var code = val.charCodeAt(0);
if (code < 256) {
val = code;
}
}
if (encoding !== undefined && typeof encoding !== 'string') {
throw new TypeError('encoding must be a string')
}
if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
throw new TypeError('Unknown encoding: ' + encoding)
}
} else if (typeof val === 'number') {
val = val & 255;
}
// Invalid ranges are not set to a default, so can range check early.
if (start < 0 || this.length < start || this.length < end) {
throw new RangeError('Out of range index')
}
if (end <= start) {
return this
}
start = start >>> 0;
end = end === undefined ? this.length : end >>> 0;
if (!val) val = 0;
var i;
if (typeof val === 'number') {
for (i = start; i < end; ++i) {
this[i] = val;
}
} else {
var bytes = internalIsBuffer(val)
? val
: utf8ToBytes(new Buffer(val, encoding).toString());
var len = bytes.length;
for (i = 0; i < end - start; ++i) {
this[i + start] = bytes[i % len];
}
}
return this
};
// HELPER FUNCTIONS
// ================
var INVALID_BASE64_RE = /[^+\/0-9A-Za-z-_]/g;
function base64clean (str) {
// Node strips out invalid characters like \n and \t from the string, base64-js does not
str = stringtrim(str).replace(INVALID_BASE64_RE, '');
// Node converts strings with length < 2 to ''
if (str.length < 2) return ''
// Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
while (str.length % 4 !== 0) {
str = str + '=';
}
return str
}
function stringtrim (str) {
if (str.trim) return str.trim()
return str.replace(/^\s+|\s+$/g, '')
}
function toHex (n) {
if (n < 16) return '0' + n.toString(16)
return n.toString(16)
}
function utf8ToBytes (string, units) {
units = units || Infinity;
var codePoint;
var length = string.length;
var leadSurrogate = null;
var bytes = [];
for (var i = 0; i < length; ++i) {
codePoint = string.charCodeAt(i);
// is surrogate component
if (codePoint > 0xD7FF && codePoint < 0xE000) {
// last char was a lead
if (!leadSurrogate) {
// no lead yet
if (codePoint > 0xDBFF) {
// unexpected trail
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD);
continue
} else if (i + 1 === length) {
// unpaired lead
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD);
continue
}
// valid lead
leadSurrogate = codePoint;
continue
}
// 2 leads in a row
if (codePoint < 0xDC00) {
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD);
leadSurrogate = codePoint;
continue
}
// valid surrogate pair
codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000;
} else if (leadSurrogate) {
// valid bmp char, but last char was a lead
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD);
}
leadSurrogate = null;
// encode utf8
if (codePoint < 0x80) {
if ((units -= 1) < 0) break
bytes.push(codePoint);
} else if (codePoint < 0x800) {
if ((units -= 2) < 0) break
bytes.push(
codePoint >> 0x6 | 0xC0,
codePoint & 0x3F | 0x80
);
} else if (codePoint < 0x10000) {
if ((units -= 3) < 0) break
bytes.push(
codePoint >> 0xC | 0xE0,
codePoint >> 0x6 & 0x3F | 0x80,
codePoint & 0x3F | 0x80
);
} else if (codePoint < 0x110000) {
if ((units -= 4) < 0) break
bytes.push(
codePoint >> 0x12 | 0xF0,
codePoint >> 0xC & 0x3F | 0x80,
codePoint >> 0x6 & 0x3F | 0x80,
codePoint & 0x3F | 0x80
);
} else {
throw new Error('Invalid code point')
}
}
return bytes
}
function asciiToBytes (str) {
var byteArray = [];
for (var i = 0; i < str.length; ++i) {
// Node's code seems to be doing this and not & 0x7F..
byteArray.push(str.charCodeAt(i) & 0xFF);
}
return byteArray
}
function utf16leToBytes (str, units) {
var c, hi, lo;
var byteArray = [];
for (var i = 0; i < str.length; ++i) {
if ((units -= 2) < 0) break
c = str.charCodeAt(i);
hi = c >> 8;
lo = c % 256;
byteArray.push(lo);
byteArray.push(hi);
}
return byteArray
}
function base64ToBytes (str) {
return toByteArray(base64clean(str))
}
function blitBuffer (src, dst, offset, length) {
for (var i = 0; i < length; ++i) {
if ((i + offset >= dst.length) || (i >= src.length)) break
dst[i + offset] = src[i];
}
return i
}
function isnan (val) {
return val !== val // eslint-disable-line no-self-compare
}
// the following is from is-buffer, also by Feross Aboukhadijeh and with same lisence
// The _isBuffer check is for Safari 5-7 support, because it's missing
// Object.prototype.constructor. Remove this eventually
function isBuffer(obj) {
return obj != null && (!!obj._isBuffer || isFastBuffer(obj) || isSlowBuffer(obj))
}
function isFastBuffer (obj) {
return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
}
// For Node v0.10 support. Remove this eventually.
function isSlowBuffer (obj) {
return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isFastBuffer(obj.slice(0, 0))
}
// shim for using process in browser
// based off https://github.com/defunctzombie/node-process/blob/master/browser.js
function defaultSetTimout() {
throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
throw new Error('clearTimeout has not been defined');
}
var cachedSetTimeout = defaultSetTimout;
var cachedClearTimeout = defaultClearTimeout;
if (typeof global$1.setTimeout === 'function') {
cachedSetTimeout = setTimeout;
}
if (typeof global$1.clearTimeout === 'function') {
cachedClearTimeout = clearTimeout;
}
function runTimeout(fun) {
if (cachedSetTimeout === setTimeout) {
//normal enviroments in sane situations
return setTimeout(fun, 0);
}
// if setTimeout wasn't available but was latter defined
if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
cachedSetTimeout = setTimeout;
return setTimeout(fun, 0);
}
try {
// when when somebody has screwed with setTimeout but no I.E. maddness
return cachedSetTimeout(fun, 0);
} catch(e){
try {
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
return cachedSetTimeout.call(null, fun, 0);
} catch(e){
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
return cachedSetTimeout.call(this, fun, 0);
}
}
}
function runClearTimeout(marker) {
if (cachedClearTimeout === clearTimeout) {
//normal enviroments in sane situations
return clearTimeout(marker);
}
// if clearTimeout wasn't available but was latter defined
if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
cachedClearTimeout = clearTimeout;
return clearTimeout(marker);
}
try {
// when when somebody has screwed with setTimeout but no I.E. maddness
return cachedClearTimeout(marker);
} catch (e){
try {
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
return cachedClearTimeout.call(null, marker);
} catch (e){
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
// Some versions of I.E. have different rules for clearTimeout vs setTimeout
return cachedClearTimeout.call(this, marker);
}
}
}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;
function cleanUpNextTick() {
if (!draining || !currentQueue) {
return;
}
draining = false;
if (currentQueue.length) {
queue = currentQueue.concat(queue);
} else {
queueIndex = -1;
}
if (queue.length) {
drainQueue();
}
}
function drainQueue() {
if (draining) {
return;
}
var timeout = runTimeout(cleanUpNextTick);
draining = true;
var len = queue.length;
while(len) {
currentQueue = queue;
queue = [];
while (++queueIndex < len) {
if (currentQueue) {
currentQueue[queueIndex].run();
}
}
queueIndex = -1;
len = queue.length;
}
currentQueue = null;
draining = false;
runClearTimeout(timeout);
}
function nextTick(fun) {
var args = new Array(arguments.length - 1);
if (arguments.length > 1) {
for (var i = 1; i < arguments.length; i++) {
args[i - 1] = arguments[i];
}
}
queue.push(new Item(fun, args));
if (queue.length === 1 && !draining) {
runTimeout(drainQueue);
}
}
// v8 likes predictible objects
function Item(fun, array) {
this.fun = fun;
this.array = array;
}
Item.prototype.run = function () {
this.fun.apply(null, this.array);
};
var title = 'browser';
var platform = 'browser';
var browser = true;
var env = {};
var argv = [];
var version = ''; // empty string to avoid regexp issues
var versions = {};
var release = {};
var config = {};
function noop() {}
var on = noop;
var addListener = noop;
var once = noop;
var off = noop;
var removeListener = noop;
var removeAllListeners = noop;
var emit = noop;
function binding(name) {
throw new Error('process.binding is not supported');
}
function cwd () { return '/' }
function chdir (dir) {
throw new Error('process.chdir is not supported');
}function umask() { return 0; }
// from https://github.com/kumavis/browser-process-hrtime/blob/master/index.js
var performance = global$1.performance || {};
var performanceNow =
performance.now ||
performance.mozNow ||
performance.msNow ||
performance.oNow ||
performance.webkitNow ||
function(){ return (new Date()).getTime() };
// generate timestamp or delta
// see http://nodejs.org/api/process.html#process_process_hrtime
function hrtime(previousTimestamp){
var clocktime = performanceNow.call(performance)*1e-3;
var seconds = Math.floor(clocktime);
var nanoseconds = Math.floor((clocktime%1)*1e9);
if (previousTimestamp) {
seconds = seconds - previousTimestamp[0];
nanoseconds = nanoseconds - previousTimestamp[1];
if (nanoseconds<0) {
seconds--;
nanoseconds += 1e9;
}
}
return [seconds,nanoseconds]
}
var startTime = new Date();
function uptime() {
var currentTime = new Date();
var dif = currentTime - startTime;
return dif / 1000;
}
var browser$1 = {
nextTick: nextTick,
title: title,
browser: browser,
env: env,
argv: argv,
version: version,
versions: versions,
on: on,
addListener: addListener,
once: once,
off: off,
removeListener: removeListener,
removeAllListeners: removeAllListeners,
emit: emit,
binding: binding,
cwd: cwd,
chdir: chdir,
umask: umask,
hrtime: hrtime,
platform: platform,
release: release,
config: config,
uptime: uptime
};
var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
function getDefaultExportFromCjs (x) {
return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x;
}
function getAugmentedNamespace(n) {
if (n.__esModule) return n;
var f = n.default;
if (typeof f == "function") {
var a = function a () {
if (this instanceof a) {
return Reflect.construct(f, arguments, this.constructor);
}
return f.apply(this, arguments);
};
a.prototype = f.prototype;
} else a = {};
Object.defineProperty(a, '__esModule', {value: true});
Object.keys(n).forEach(function (k) {
var d = Object.getOwnPropertyDescriptor(n, k);
Object.defineProperty(a, k, d.get ? d : {
enumerable: true,
get: function () {
return n[k];
}
});
});
return a;
}
function commonjsRequire(path) {
throw new Error('Could not dynamically require "' + path + '". Please configure the dynamicRequireTargets or/and ignoreDynamicRequires option of @rollup/plugin-commonjs appropriately for this require call to work.');
}
var jszip_min = {exports: {}};
(function (module, exports) {
!function(e){module.exports=e();}(function(){return function s(a,o,h){function u(r,e){if(!o[r]){if(!a[r]){var t="function"==typeof commonjsRequire&&commonjsRequire;if(!e&&t)return t(r,!0);if(l)return l(r,!0);var n=new Error("Cannot find module '"+r+"'");throw n.code="MODULE_NOT_FOUND",n}var i=o[r]={exports:{}};a[r][0].call(i.exports,function(e){var t=a[r][1][e];return u(t||e)},i,i.exports,s,a,o,h);}return o[r].exports}for(var l="function"==typeof commonjsRequire&&commonjsRequire,e=0;e<h.length;e++)u(h[e]);return u}({1:[function(e,t,r){var d=e("./utils"),c=e("./support"),p="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";r.encode=function(e){for(var t,r,n,i,s,a,o,h=[],u=0,l=e.length,f=l,c="string"!==d.getTypeOf(e);u<e.length;)f=l-u,n=c?(t=e[u++],r=u<l?e[u++]:0,u<l?e[u++]:0):(t=e.charCodeAt(u++),r=u<l?e.charCodeAt(u++):0,u<l?e.charCodeAt(u++):0),i=t>>2,s=(3&t)<<4|r>>4,a=1<f?(15&r)<<2|n>>6:64,o=2<f?63&n:64,h.push(p.charAt(i)+p.charAt(s)+p.charAt(a)+p.charAt(o));return h.join("")},r.decode=function(e){var t,r,n,i,s,a,o=0,h=0,u="data:";if(e.substr(0,u.length)===u)throw new Error("Invalid base64 input, it looks like a data url.");var l,f=3*(e=e.replace(/[^A-Za-z0-9+/=]/g,"")).length/4;if(e.charAt(e.length-1)===p.charAt(64)&&f--,e.charAt(e.length-2)===p.charAt(64)&&f--,f%1!=0)throw new Error("Invalid base64 input, bad content length.");for(l=c.uint8array?new Uint8Array(0|f):new Array(0|f);o<e.length;)t=p.indexOf(e.charAt(o++))<<2|(i=p.indexOf(e.charAt(o++)))>>4,r=(15&i)<<4|(s=p.indexOf(e.charAt(o++)))>>2,n=(3&s)<<6|(a=p.indexOf(e.charAt(o++))),l[h++]=t,64!==s&&(l[h++]=r),64!==a&&(l[h++]=n);return l};},{"./support":30,"./utils":32}],2:[function(e,t,r){var n=e("./external"),i=e("./stream/DataWorker"),s=e("./stream/Crc32Probe"),a=e("./stream/DataLengthProbe");function o(e,t,r,n,i){this.compressedSize=e,this.uncompressedSize=t,this.crc32=r,this.compression=n,this.compressedContent=i;}o.prototype={getContentWorker:function(){var e=new i(n.Promise.resolve(this.compressedContent)).pipe(this.compression.uncompressWorker()).pipe(new a("data_length")),t=this;return e.on("end",function(){if(this.streamInfo.data_length!==t.uncompressedSize)throw new Error("Bug : uncompressed data size mismatch")}),e},getCompressedWorker:function(){return new i(n.Promise.resolve(this.compressedContent)).withStreamInfo("compressedSize",this.compressedSize).withStreamInfo("uncompressedSize",this.uncompressedSize).withStreamInfo("crc32",this.crc32).withStreamInfo("compression",this.compression)}},o.createWorkerFrom=function(e,t,r){return e.pipe(new s).pipe(new a("uncompressedSize")).pipe(t.compressWorker(r)).pipe(new a("compressedSize")).withStreamInfo("compression",t)},t.exports=o;},{"./external":6,"./stream/Crc32Probe":25,"./stream/DataLengthProbe":26,"./stream/DataWorker":27}],3:[function(e,t,r){var n=e("./stream/GenericWorker");r.STORE={magic:"\0\0",compressWorker:function(){return new n("STORE compression")},uncompressWorker:function(){return new n("STORE decompression")}},r.DEFLATE=e("./flate");},{"./flate":7,"./stream/GenericWorker":28}],4:[function(e,t,r){var n=e("./utils");var o=function(){for(var e,t=[],r=0;r<256;r++){e=r;for(var n=0;n<8;n++)e=1&e?3988292384^e>>>1:e>>>1;t[r]=e;}return t}();t.exports=function(e,t){return void 0!==e&&e.length?"string"!==n.getTypeOf(e)?function(e,t,r,n){var i=o,s=n+r;e^=-1;for(var a=n;a<s;a++)e=e>>>8^i[255&(e^t[a])];return -1^e}(0|t,e,e.length,0):function(e,t,r,n){var i=o,s=n+r;e^=-1;for(var a=n;a<s;a++)e=e>>>8^i[255&(e^t.charCodeAt(a))];return -1^e}(0|t,e,e.length,0):0};},{"./utils":32}],5:[function(e,t,r){r.base64=!1,r.binary=!1,r.dir=!1,r.createFolders=!0,r.date=null,r.compression=null,r.compressionOptions=null,r.comment=null,r.unixPermissions=null,r.dosPermissions=null;},{}],6:[function(e,t,r){var n=null;n="undefined"!=typeof Promise?Promise:e("lie"),t.exports={Promise:n};},{lie:37}],7:[function(e,t,r){var n="undefined"!=typeof Uint8Array&&"undefined"!=typeof Uint16Array&&"undefined"!=typeof Uint32Array,i=e("pako"),s=e("./utils"),a=e("./stream/GenericWorker"),o=n?"uint8array":"array";function h(e,t){a.call(this,"FlateWorker/"+e),this._pako=null,this._pakoAction=e,this._pakoOptions=t,this.meta={};}r.magic="\b\0",s.inherits(h,a),h.prototype.processChunk=function(e){this.meta=e.meta,null===this._pako&&this._createPako(),this._pako.push(s.transformTo(o,e.data),!1);},h.prototype.flush=function(){a.prototype.flush.call(this),null===this._pako&&this._createPako(),this._pako.push([],!0);},h.prototype.cleanUp=function(){a.prototype.cleanUp.call(this),this._pako=null;},h.prototype._createPako=function(){this._pako=new i[this._pakoAction]({raw:!0,level:this._pakoOptions.level||-1});var t=this;this._pako.onData=function(e){t.push({data:e,meta:t.meta});};},r.compressWorker=function(e){return new h("Deflate",e)},r.uncompressWorker=function(){return new h("Inflate",{})};},{"./stream/GenericWorker":28,"./utils":32,pako:38}],8:[function(e,t,r){function A(e,t){var r,n="";for(r=0;r<t;r++)n+=String.fromCharCode(255&e),e>>>=8;return n}function n(e,t,r,n,i,s){var a,o,h=e.file,u=e.compression,l=s!==O.utf8encode,f=I.transformTo("string",s(h.name)),c=I.transformTo("string",O.utf8encode(h.name)),d=h.comment,p=I.transformTo("string",s(d)),m=I.transformTo("string",O.utf8encode(d)),_=c.length!==h.name.length,g=m.length!==d.length,b="",v="",y="",w=h.dir,k=h.date,x={crc32:0,compressedSize:0,uncompressedSize:0};t&&!r||(x.crc32=e.crc32,x.compressedSize=e.compressedSize,x.uncompressedSize=e.uncompressedSize);var S=0;t&&(S|=8),l||!_&&!g||(S|=2048);var z=0,C=0;w&&(z|=16),"UNIX"===i?(C=798,z|=function(e,t){var r=e;return e||(r=t?16893:33204),(65535&r)<<16}(h.unixPermissions,w)):(C=20,z|=function(e){return 63&(e||0)}(h.dosPermissions)),a=k.getUTCHours(),a<<=6,a|=k.getUTCMinutes(),a<<=5,a|=k.getUTCSeconds()/2,o=k.getUTCFullYear()-1980,o<<=4,o|=k.getUTCMonth()+1,o<<=5,o|=k.getUTCDate(),_&&(v=A(1,1)+A(B(f),4)+c,b+="up"+A(v.length,2)+v),g&&(y=A(1,1)+A(B(p),4)+m,b+="uc"+A(y.length,2)+y);var E="";return E+="\n\0",E+=A(S,2),E+=u.magic,E+=A(a,2),E+=A(o,2),E+=A(x.crc32,4),E+=A(x.compressedSize,4),E+=A(x.uncompressedSize,4),E+=A(f.length,2),E+=A(b.length,2),{fileRecord:R.LOCAL_FILE_HEADER+E+f+b,dirRecord:R.CENTRAL_FILE_HEADER+A(C,2)+E+A(p.length,2)+"\0\0\0\0"+A(z,4)+A(n,4)+f+b+p}}var I=e("../utils"),i=e("../stream/GenericWorker"),O=e("../utf8"),B=e("../crc32"),R=e("../signature");function s(e,t,r,n){i.call(this,"ZipFileWorker"),this.bytesWritten=0,this.zipComment=t,this.zipPlatform=r,this.encodeFileName=n,this.streamFiles=e,this.accumulate=!1,this.contentBuffer=[],this.dirRecords=[],this.currentSourceOffset=0,this.entriesCount=0,this.currentFile=null,this._sources=[];}I.inherits(s,i),s.prototype.push=function(e){var t=e.meta.percent||0,r=this.entriesCount,n=this._sources.length;this.accumulate?this.contentBuffer.push(e):(this.bytesWritten+=e.data.length,i.prototype.push.call(this,{data:e.data,meta:{currentFile:this.currentFile,percent:r?(t+100*(r-n-1))/r:100}}));},s.prototype.openedSource=function(e){this.currentSourceOffset=this.bytesWritten,this.currentFile=e.file.name;var t=this.streamFiles&&!e.file.dir;if(t){var r=n(e,t,!1,this.currentSourceOffset,this.zipPlatform,this.encodeFileName);this.push({data:r.fileRecord,meta:{percent:0}});}else this.accumulate=!0;},s.prototype.closedSource=function(e){this.accumulate=!1;var t=this.streamFiles&&!e.file.dir,r=n(e,t,!0,this.currentSourceOffset,this.zipPlatform,this.encodeFileName);if(this.dirRecords.push(r.dirRecord),t)this.push({data:function(e){return R.DATA_DESCRIPTOR+A(e.crc32,4)+A(e.compressedSize,4)+A(e.uncompressedSize,4)}(e),meta:{percent:100}});else for(this.push({data:r.fileRecord,meta:{percent:0}});this.contentBuffer.length;)this.push(this.contentBuffer.shift());this.currentFile=null;},s.prototype.flush=function(){for(var e=this.bytesWritten,t=0;t<this.dirRecords.length;t++)this.push({data:this.dirRecords[t],meta:{percent:100}});var r=this.bytesWritten-e,n=function(e,t,r,n,i){var s=I.transformTo("string",i(n));return R.CENTRAL_DIRECTORY_END+"\0\0\0\0"+A(e,2)+A(e,2)+A(t,4)+A(r,4)+A(s.length,2)+s}(this.dirRecords.length,r,e,this.zipComment,this.encodeFileName);this.push({data:n,meta:{percent:100}});},s.prototype.prepareNextSource=function(){this.previous=this._sources.shift(),this.openedSource(this.previous.streamInfo),this.isPaused?this.previous.pause():this.previous.resume();},s.prototype.registerPrevious=function(e){this._sources.push(e);var t=this;return e.on("data",function(e){t.processChunk(e);}),e.on("end",function(){t.closedSource(t.previous.streamInfo),t._sources.length?t.prepareNextSource():t.end();}),e.on("error",function(e){t.error(e);}),this},s.prototype.resume=function(){return !!i.prototype.resume.call(this)&&(!this.previous&&this._sources.length?(this.prepareNextSource(),!0):this.previous||this._sources.length||this.generatedError?void 0:(this.end(),!0))},s.prototype.error=function(e){var t=this._sources;if(!i.prototype.error.call(this,e))return !1;for(var r=0;r<t.length;r++)try{t[r].error(e);}catch(e){}return !0},s.prototype.lock=function(){i.prototype.lock.call(this);for(var e=this._sources,t=0;t<e.length;t++)e[t].lock();},t.exports=s;},{"../crc32":4,"../signature":23,"../stream/GenericWorker":28,"../utf8":31,"../utils":32}],9:[function(e,t,r){var u=e("../compressions"),n=e("./ZipFileWorker");r.generateWorker=function(e,a,t){var o=new n(a.streamFiles,t,a.platform,a.encodeFileName),h=0;try{e.forEach(function(e,t){h++;var r=function(e,t){var r=e||t,n=u[r];if(!n)throw new Error(r+" is not a valid compression method !");return n}(t.options.compression,a.compression),n=t.options.compressionOptions||a.compressionOptions||{},i=t.dir,s=t.date;t._compressWorker(r,n).withStreamInfo("file",{name:e,dir:i,date:s,comment:t.comment||"",unixPermissions:t.unixPermissions,dosPermissions:t.dosPermissions}).pipe(o);}),o.entriesCount=h;}catch(e){o.error(e);}return o};},{"../compressions":3,"./ZipFileWorker":8}],10:[function(e,t,r){function n(){if(!(this instanceof n))return new n;if(arguments.length)throw new Error("The constructor with parameters has been removed in JSZip 3.0, please check the upgrade guide.");this.files=Object.create(null),this.comment=null,this.root="",this.clone=function(){var e=new n;for(var t in this)"function"!=typeof this[t]&&(e[t]=this[t]);return e};}(n.prototype=e("./object")).loadAsync=e("./load"),n.support=e("./support"),n.defaults=e("./defaults"),n.version="3.10.1",n.loadAsync=function(e,t){return (new n).loadAsync(e,t)},n.external=e("./external"),t.exports=n;},{"./defaults":5,"./external":6,"./load":11,"./object":15,"./support":30}],11:[function(e,t,r){var u=e("./utils"),i=e("./external"),n=e("./utf8"),s=e("./zipEntries"),a=e("./stream/Crc32Probe"),l=e("./nodejsUtils");function f(n){return new i.Promise(function(e,t){var r=n.decompressed.getContentWorker().pipe(new a);r.on("error",function(e){t(e);}).on("end",function(){r.streamInfo.crc32!==n.decompressed.crc32?t(new Error("Corrupted zip : CRC32 mismatch")):e();}).resume();})}t.exports=function(e,o){var h=this;return o=u.extend(o||{},{base64:!1,checkCRC32:!1,optimizedBinaryString:!1,createFolders:!1,decodeFileName:n.utf8decode}),l.isNode&&l.isStream(e)?i.Promise.reject(new Error("JSZip can't accept a stream when loading a zip file.")):u.prepareContent("the loaded zip file",e,!0,o.optimizedBinaryString,o.base64).then(function(e){var t=new s(o);return t.load(e),t}).then(function(e){var t=[i.Promise.resolve(e)],r=e.files;if(o.checkCRC32)for(var n=0;n<r.length;n++)t.push(f(r[n]));return i.Promise.all(t)}).then(function(e){for(var t=e.shift(),r=t.files,n=0;n<r.length;n++){var i=r[n],s=i.fileNameStr,a=u.resolve(i.fileNameStr);h.file(a,i.decompressed,{binary:!0,optimizedBinaryString:!0,date:i.date,dir:i.dir,comment:i.fileCommentStr.length?i.fileCommentStr:null,unixPermissions:i.unixPermissions,dosPermissions:i.dosPermissions,createFolders:o.createFolders}),i.dir||(h.file(a).unsafeOriginalName=s);}return t.zipComment.length&&(h.comment=t.zipComment),h})};},{"./external":6,"./nodejsUtils":14,"./stream/Crc32Probe":25,"./utf8":31,"./utils":32,"./zipEntries":33}],12:[function(e,t,r){var n=e("../utils"),i=e("../stream/GenericWorker");function s(e,t){i.call(this,"Nodejs stream input adapter for "+e),this._upstreamEnded=!1,this._bindStream(t);}n.inherits(s,i),s.prototype._bindStream=function(e){var t=this;(this._stream=e).pause(),e.on("data",function(e){t.push({data:e,meta:{percent:0}});}).on("error",function(e){t.isPaused?this.generatedError=e:t.error(e);}).on("end",function(){t.isPaused?t._upstreamEnded=!0:t.end();});},s.prototype.pause=function(){return !!i.prototype.pause.call(this)&&(this._stream.pause(),!0)},s.prototype.resume=function(){return !!i.prototype.resume.call(this)&&(this._upstreamEnded?this.end():this._stream.resume(),!0)},t.exports=s;},{"../stream/GenericWorker":28,"../utils":32}],13:[function(e,t,r){var i=e("readable-stream").Readable;function n(e,t,r){i.call(this,t),this._helper=e;var n=this;e.on("data",function(e,t){n.push(e)||n._helper.pause(),r&&r(t);}).on("error",function(e){n.emit("error",e);}).on("end",function(){n.push(null);});}e("../utils").inherits(n,i),n.prototype._read=function(){this._helper.resume();},t.exports=n;},{"../utils":32,"readable-stream":16}],14:[function(e,t,r){t.exports={isNode:"undefined"!=typeof Buffer,newBufferFrom:function(e,t){if(Buffer.from&&Buffer.from!==Uint8Array.from)return Buffer.from(e,t);if("number"==typeof e)throw new Error('The "data" argument must not be a number');return new Buffer(e,t)},allocBuffer:function(e){if(Buffer.alloc)return Buffer.alloc(e);var t=new Buffer(e);return t.fill(0),t},isBuffer:function(e){return Buffer.isBuffer(e)},isStream:function(e){return e&&"function"==typeof e.on&&"function"==typeof e.pause&&"function"==typeof e.resume}};},{}],15:[function(e,t,r){function s(e,t,r){var n,i=u.getTypeOf(t),s=u.extend(r||{},f);s.date=s.date||new Date,null!==s.compression&&(s.compression=s.compression.toUpperCase()),"string"==typeof s.unixPermissions&&(s.unixPermissions=parseInt(s.unixPermissions,8)),s.unixPermissions&&16384&s.unixPermissions&&(s.dir=!0),s.dosPermissions&&16&s.dosPermissions&&(s.dir=!0),s.dir&&(e=g(e)),s.createFolders&&(n=_(e))&&b.call(this,n,!0);var a="string"===i&&!1===s.binary&&!1===s.base64;r&&void 0!==r.binary||(s.binary=!a),(t instanceof c&&0===t.uncompressedSize||s.dir||!t||0===t.length)&&(s.base64=!1,s.binary=!0,t="",s.compression="STORE",i="string");var o=null;o=t instanceof c||t instanceof l?t:p.isNode&&p.isStream(t)?new m(e,t):u.prepareContent(e,t,s.binary,s.optimizedBinaryString,s.base64);var h=new d(e,o,s);this.files[e]=h;}var i=e("./utf8"),u=e("./utils"),l=e("./stream/GenericWorker"),a=e("./stream/StreamHelper"),f=e("./defaults"),c=e("./compressedObject"),d=e("./zipObject"),o=e("./generate"),p=e("./nodejsUtils"),m=e("./nodejs/NodejsStreamInputAdapter"),_=function(e){"/"===e.slice(-1)&&(e=e.substring(0,e.length-1));var t=e.lastIndexOf("/");return 0<t?e.substring(0,t):""},g=function(e){return "/"!==e.slice(-1)&&(e+="/"),e},b=function(e,t){return t=void 0!==t?t:f.createFolders,e=g(e),this.files[e]||s.call(this,e,null,{dir:!0,createFolders:t}),this.files[e]};function h(e){return "[object RegExp]"===Object.prototype.toString.call(e)}var n={load:function(){throw new Error("This method has been removed in JSZip 3.0, please check the upgrade guide.")},forEach:function(e){var t,r,n;for(t in this.files)n=this.files[t],(r=t.slice(this.root.length,t.length))&&t.slice(0,this.root.length)===this.root&&e(r,n);},filter:function(r){var n=[];return this.forEach(function(e,t){r(e,t)&&n.push(t);}),n},file:function(e,t,r){if(1!==arguments.length)return e=this.root+e,s.call(this,e,t,r),this;if(h(e)){var n=e;return this.filter(function(e,t){return !t.dir&&n.test(e)})}var i=this.files[this.root+e];return i&&!i.dir?i:null},folder:function(r){if(!r)return this;if(h(r))return this.filter(function(e,t){return t.dir&&r.test(e)});var e=this.root+r,t=b.call(this,e),n=this.clone();return n.root=t.name,n},remove:function(r){r=this.root+r;var e=this.files[r];if(e||("/"!==r.slice(-1)&&(r+="/"),e=this.files[r]),e&&!e.dir)delete this.files[r];else for(var t=this.filter(function(e,t){return t.name.slice(0,r.length)===r}),n=0;n<t.length;n++)delete this.files[t[n].name];return this},generate:function(){throw new Error("This method has been removed in JSZip 3.0, please check the upgrade guide.")},generateInternalStream:function(e){var t,r={};try{if((r=u.extend(e||{},{streamFiles:!1,compression:"STORE",compressionOptions:null,type:"",platform:"DOS",comment:null,mimeType:"application/zip",encodeFileName:i.utf8encode})).type=r.type.toLowerCase(),r.compression=r.compression.toUpperCase(),"binarystring"===r.type&&(r.type="string"),!r.type)throw new Error("No output type specified.");u.checkSupport(r.type),"darwin"!==r.platform&&"freebsd"!==r.platform&&"linux"!==r.platform&&"sunos"!==r.platform||(r.platform="UNIX"),"win32"===r.platform&&(r.platform="DOS");var n=r.comment||this.comment||"";t=o.generateWorker(this,r,n);}catch(e){(t=new l("error")).error(e);}return new a(t,r.type||"string",r.mimeType)},generateAsync:function(e,t){return this.generateInternalStream(e).accumulate(t)},generateNodeStream:function(e,t){return (e=e||{}).type||(e.type="nodebuffer"),this.generateInternalStream(e).toNodejsStream(t)}};t.exports=n;},{"./compressedObject":2,"./defaults":5,"./generate":9,"./nodejs/NodejsStreamInputAdapter":12,"./nodejsUtils":14,"./stream/GenericWorker":28,"./stream/StreamHelper":29,"./utf8":31,"./utils":32,"./zipObject":35}],16:[function(e,t,r){t.exports=e("stream");},{stream:void 0}],17:[function(e,t,r){var n=e("./DataReader");function i(e){n.call(this,e);for(var t=0;t<this.data.length;t++)e[t]=255&e[t];}e("../utils").inherits(i,n),i.prototype.byteAt=function(e){return this.data[this.zero+e]},i.prototype.lastIndexOfSignature=function(e){for(var t=e.charCodeAt(0),r=e.charCodeAt(1),n=e.charCodeAt(2),i=e.charCodeAt(3),s=this.length-4;0<=s;--s)if(this.data[s]===t&&this.data[s+1]===r&&this.data[s+2]===n&&this.data[s+3]===i)return s-this.zero;return -1},i.prototype.readAndCheckSignature=function(e){var t=e.charCodeAt(0),r=e.charCodeAt(1),n=e.charCodeAt(2),i=e.charCodeAt(3),s=this.readData(4);return t===s[0]&&r===s[1]&&n===s[2]&&i===s[3]},i.prototype.readData=function(e){if(this.checkOffset(e),0===e)return [];var t=this.data.slice(this.zero+this.index,this.zero+this.index+e);return this.index+=e,t},t.exports=i;},{"../utils":32,"./DataReader":18}],18:[function(e,t,r){var n=e("../utils");function i(e){this.data=e,this.length=e.length,this.index=0,this.zero=0;}i.prototype={checkOffset:function(e){this.checkIndex(this.index+e);},checkIndex:function(e){if(this.length<this.zero+e||e<0)throw new Error("End of data reached (data length = "+this.length+", asked index = "+e+"). Corrupted zip ?")},setIndex:function(e){this.checkIndex(e),this.index=e;},skip:function(e){this.setIndex(this.index+e);},byteAt:function(){},readInt:function(e){var t,r=0;for(this.checkOffset(e),t=this.index+e-1;t>=this.index;t--)r=(r<<8)+this.byteAt(t);return this.index+=e,r},readString:function(e){return n.transformTo("string",this.readData(e))},readData:function(){},lastIndexOfSignature:function(){},readAndCheckSignature:function(){},readDate:function(){var e=this.readInt(4);return new Date(Date.UTC(1980+(e>>25&127),(e>>21&15)-1,e>>16&31,e>>11&31,e>>5&63,(31&e)<<1))}},t.exports=i;},{"../utils":32}],19:[function(e,t,r){var n=e("./Uint8ArrayReader");function i(e){n.call(this,e);}e("../utils").inherits(i,n),i.prototype.readData=function(e){this.checkOffset(e);var t=this.data.slice(this.zero+this.index,this.zero+this.index+e);return this.index+=e,t},t.exports=i;},{"../utils":32,"./Uint8ArrayReader":21}],20:[function(e,t,r){var n=e("./DataReader");function i(e){n.call(this,e);}e("../utils").inherits(i,n),i.prototype.byteAt=function(e){return this.data.charCodeAt(this.zero+e)},i.prototype.lastIndexOfSignature=function(e){return this.data.lastIndexOf(e)-this.zero},i.prototype.readAndCheckSignature=function(e){return e===this.readData(4)},i.prototype.readData=function(e){this.checkOffset(e);var t=this.data.slice(this.zero+this.index,this.zero+this.index+e);return this.index+=e,t},t.exports=i;},{"../utils":32,"./DataReader":18}],21:[function(e,t,r){var n=e("./ArrayReader");function i(e){n.call(this,e);}e("../utils").inherits(i,n),i.prototype.readData=function(e){if(this.checkOffset(e),0===e)return new Uint8Array(0);var t=this.data.subarray(this.zero+this.index,this.zero+this.index+e);return this.index+=e,t},t.exports=i;},{"../utils":32,"./ArrayReader":17}],22:[function(e,t,r){var n=e("../utils"),i=e("../support"),s=e("./ArrayReader"),a=e("./StringReader"),o=e("./NodeBufferReader"),h=e("./Uint8ArrayReader");t.exports=function(e){var t=n.getTypeOf(e);return n.checkSupport(t),"string"!==t||i.uint8array?"nodebuffer"===t?new o(e):i.uint8array?new h(n.transformTo("uint8array",e)):new s(n.transformTo("array",e)):new a(e)};},{"../support":30,"../utils":32,"./ArrayReader":17,"./NodeBufferReader":19,"./StringReader":20,"./Uint8ArrayReader":21}],23:[function(e,t,r){r.LOCAL_FILE_HEADER="PK",r.CENTRAL_FILE_HEADER="PK",r.CENTRAL_DIRECTORY_END="PK",r.ZIP64_CENTRAL_DIRECTORY_LOCATOR="PK",r.ZIP64_CENTRAL_DIRECTORY_END="PK",r.DATA_DESCRIPTOR="PK\b";},{}],24:[function(e,t,r){var n=e("./GenericWorker"),i=e("../utils");function s(e){n.call(this,"ConvertWorker to "+e),this.destType=e;}i.inherits(s,n),s.prototype.processChunk=function(e){this.push({data:i.transformTo(this.destType,e.data),meta:e.meta});},t.exports=s;},{"../utils":32,"./GenericWorker":28}],25:[function(e,t,r){var n=e("./GenericWorker"),i=e("../crc32");function s(){n.call(this,"Crc32Probe"),this.withStreamInfo("crc32",0);}e("../utils").inherits(s,n),s.prototype.processChunk=function(e){this.streamInfo.crc32=i(e.data,this.streamInfo.crc32||0),this.push(e);},t.exports=s;},{"../crc32":4,"../utils":32,"./GenericWorker":28}],26:[function(e,t,r){var n=e("../utils"),i=e("./GenericWorker");function s(e){i.call(this,"DataLengthProbe for "+e),this.propName=e,this.withStreamInfo(e,0);}n.inherits(s,i),s.prototype.processChunk=function(e){if(e){var t=this.streamInfo[this.propName]||0;this.streamInfo[this.propName]=t+e.data.length;}i.prototype.processChunk.call(this,e);},t.exports=s;},{"../utils":32,"./GenericWorker":28}],27:[function(e,t,r){var n=e("../utils"),i=e("./GenericWorker");function s(e){i.call(this,"DataWorker");var t=this;this.dataIsReady=!1,this.index=0,this.max=0,this.data=null,this.type="",this._tickScheduled=!1,e.then(function(e){t.dataIsReady=!0,t.data=e,t.max=e&&e.length||0,t.type=n.getTypeOf(e),t.isPaused||t._tickAndRepeat();},function(e){t.error(e);});}n.inherits(s,i),s.prototype.cleanUp=function(){i.prototype.cleanUp.call(this),this.data=null;},s.prototype.resume=function(){return !!i.prototype.resume.call(this)&&(!this._tickScheduled&&this.dataIsReady&&(this._tickScheduled=!0,n.delay(this._tickAndRepeat,[],this)),!0)},s.prototype._tickAndRepeat=function(){this._tickScheduled=!1,this.isPaused||this.isFinished||(this._tick(),this.isFinished||(n.delay(this._tickAndRepeat,[],this),this._tickScheduled=!0));},s.prototype._tick=function(){if(this.isPaused||this.isFinished)return !1;var e=null,t=Math.min(this.max,this.index+16384);if(this.index>=this.max)return this.end();switch(this.type){case"string":e=this.data.substring(this.index,t);break;case"uint8array":e=this.data.subarray(this.index,t);break;case"array":case"nodebuffer":e=this.data.slice(this.index,t);}return this.index=t,this.push({data:e,meta:{percent:this.max?this.index/this.max*100:0}})},t.exports=s;},{"../utils":32,"./GenericWorker":28}],28:[function(e,t,r){function n(e){this.name=e||"default",this.streamInfo={},this.generatedError=null,this.extraStreamInfo={},this.isPaused=!0,this.isFinished=!1,this.isLocked=!1,this._listeners={data:[],end:[],error:[]},this.previous=null;}n.prototype={push:function(e){this.emit("data",e);},end:function(){if(this.isFinished)return !1;this.flush();try{this.emit("end"),this.cleanUp(),this.isFinished=!0;}catch(e){this.emit("error",e);}return !0},error:function(e){return !this.isFinished&&(this.isPaused?this.generatedError=e:(this.isFinished=!0,this.emit("error",e),this.previous&&this.previous.error(e),this.cleanUp()),!0)},on:function(e,t){return this._listeners[e].push(t),this},cleanUp:function(){this.streamInfo=this.generatedError=this.extraStreamInfo=null,this._listeners=[];},emit:function(e,t){if(this._listeners[e])for(var r=0;r<this._listeners[e].length;r++)this._listeners[e][r].call(this,t);},pipe:function(e){return e.registerPrevious(this)},registerPrevious:function(e){if(this.isLocked)throw new Error("The stream '"+this+"' has already been used.");this.streamInfo=e.streamInfo,this.mergeStreamInfo(),this.previous=e;var t=this;return e.on("data",function(e){t.processChunk(e);}),e.on("end",function(){t.end();}),e.on("error",function(e){t.error(e);}),this},pause:function(){return !this.isPaused&&!this.isFinished&&(this.isPaused=!0,this.previous&&this.previous.pause(),!0)},resume:function(){if(!this.isPaused||this.isFinished)return !1;var e=this.isPaused=!1;return this.generatedError&&(this.error(this.generatedError),e=!0),this.previous&&this.previous.resume(),!e},flush:function(){},processChunk:function(e){this.push(e);},withStreamInfo:function(e,t){return this.extraStreamInfo[e]=t,this.mergeStreamInfo(),this},mergeStreamInfo:function(){for(var e in this.extraStreamInfo)Object.prototype.hasOwnProperty.call(this.extraStreamInfo,e)&&(this.streamInfo[e]=this.extraStreamInfo[e]);},lock:function(){if(this.isLocked)throw new Error("The stream '"+this+"' has already been used.");this.isLocked=!0,this.previous&&this.previous.lock();},toString:function(){var e="Worker "+this.name;return this.previous?this.previous+" -> "+e:e}},t.exports=n;},{}],29:[function(e,t,r){var h=e("../utils"),i=e("./ConvertWorker"),s=e("./GenericWorker"),u=e("../base64"),n=e("../support"),a=e("../external"),o=null;if(n.nodestream)try{o=e("../nodejs/NodejsStreamOutputAdapter");}catch(e){}function l(e,o){return new a.Promise(function(t,r){var n=[],i=e._internalType,s=e._outputType,a=e._mimeType;e.on("data",function(e,t){n.push(e),o&&o(t);}).on("error",function(e){n=[],r(e);}).on("end",function(){try{var e=function(e,t,r){switch(e){case"blob":return h.newBlob(h.transformTo("arraybuffer",t),r);case"base64":return u.encode(t);default:return h.transformTo(e,t)}}(s,function(e,t){var r,n=0,i=null,s=0;for(r=0;r<t.length;r++)s+=t[r].length;switch(e){case"string":return t.join("");case"array":return Array.prototype.concat.apply([],t);case"uint8array":for(i=new Uint8Array(s),r=0;r<t.length;r++)i.set(t[r],n),n+=t[r].length;return i;case"nodebuffer":return Buffer.concat(t);default:throw new Error("concat : unsupported type '"+e+"'")}}(i,n),a);t(e);}catch(e){r(e);}n=[];}).resume();})}function f(e,t,r){var n=t;switch(t){case"blob":case"arraybuffer":n="uint8array";break;case"base64":n="string";}try{this._internalType=n,this._outputType=t,this._mimeType=r,h.checkSupport(n),this._worker=e.pipe(new i(n)),e.lock();}catch(e){this._worker=new s("error"),this._worker.error(e);}}f.prototype={accumulate:function(e){return l(this,e)},on:function(e,t){var r=this;return "data"===e?this._worker.on(e,function(e){t.call(r,e.data,e.meta);}):this._worker.on(e,function(){h.delay(t,arguments,r);}),this},resume:function(){return h.delay(this._worker.resume,[],this._worker),this},pause:function(){return this._worker.pause(),this},toNodejsStream:function(e){if(h.checkSupport("nodestream"),"nodebuffer"!==this._outputType)throw new Error(this._outputType+" is not supported by this method");return new o(this,{objectMode:"nodebuffer"!==this._outputType},e)}},t.exports=f;},{"../base64":1,"../external":6,"../nodejs/NodejsStreamOutputAdapter":13,"../support":30,"../utils":32,"./ConvertWorker":24,"./GenericWorker":28}],30:[function(e,t,r){if(r.base64=!0,r.array=!0,r.string=!0,r.arraybuffer="undefined"!=typeof ArrayBuffer&&"undefined"!=typeof Uint8Array,r.nodebuffer="undefined"!=typeof Buffer,r.uint8array="undefined"!=typeof Uint8Array,"undefined"==typeof ArrayBuffer)r.blob=!1;else {var n=new ArrayBuffer(0);try{r.blob=0===new Blob([n],{type:"application/zip"}).size;}catch(e){try{var i=new(self.BlobBuilder||self.WebKitBlobBuilder||self.MozBlobBuilder||self.MSBlobBuilder);i.append(n),r.blob=0===i.getBlob("application/zip").size;}catch(e){r.blob=!1;}}}try{r.nodestream=!!e("readable-stream").Readable;}catch(e){r.nodestream=!1;}},{"readable-stream":16}],31:[function(e,t,s){for(var o=e("./utils"),h=e("./support"),r=e("./nodejsUtils"),n=e("./stream/GenericWorker"),u=new Array(256),i=0;i<256;i++)u[i]=252<=i?6:248<=i?5:240<=i?4:224<=i?3:192<=i?2:1;u[254]=u[254]=1;function a(){n.call(this,"utf-8 decode"),this.leftOver=null;}function l(){n.call(this,"utf-8 encode");}s.utf8encode=function(e){return h.nodebuffer?r.newBufferFrom(e,"utf-8"):function(e){var t,r,n,i,s,a=e.length,o=0;for(i=0;i<a;i++)55296==(64512&(r=e.charCodeAt(i)))&&i+1<a&&56320==(64512&(n=e.charCodeAt(i+1)))&&(r=65536+(r-55296<<10)+(n-56320),i++),o+=r<128?1:r<2048?2:r<65536?3:4;for(t=h.uint8array?new Uint8Array(o):new Array(o),i=s=0;s<o;i++)55296==(64512&(r=e.charCodeAt(i)))&&i+1<a&&56320==(64512&(n=e.charCodeAt(i+1)))&&(r=65536+(r-55296<<10)+(n-56320),i++),r<128?t[s++]=r:(r<2048?t[s++]=192|r>>>6:(r<65536?t[s++]=224|r>>>12:(t[s++]=240|r>>>18,t[s++]=128|r>>>12&63),t[s++]=128|r>>>6&63),t[s++]=128|63&r);return t}(e)},s.utf8decode=function(e){return h.nodebuffer?o.transformTo("nodebuffer",e).toString("utf-8"):function(e){var t,r,n,i,s=e.length,a=new Array(2*s);for(t=r=0;t<s;)if((n=e[t++])<128)a[r++]=n;else if(4<(i=u[n]))a[r++]=65533,t+=i-1;else {for(n&=2===i?31:3===i?15:7;1<i&&t<s;)n=n<<6|63&e[t++],i--;1<i?a[r++]=65533:n<65536?a[r++]=n:(n-=65536,a[r++]=55296|n>>10&1023,a[r++]=56320|1023&n);}return a.length!==r&&(a.subarray?a=a.subarray(0,r):a.length=r),o.applyFromCharCode(a)}(e=o.transformTo(h.uint8array?"uint8array":"array",e))},o.inherits(a,n),a.prototype.processChunk=function(e){var t=o.transformTo(h.uint8array?"uint8array":"array",e.data);if(this.leftOver&&this.leftOver.length){if(h.uint8array){var r=t;(t=new Uint8Array(r.length+this.leftOver.length)).set(this.leftOver,0),t.set(r,this.leftOver.length);}else t=this.leftOver.concat(t);this.leftOver=null;}var n=function(e,t){var r;for((t=t||e.length)>e.length&&(t=e.length),r=t-1;0<=r&&128==(192&e[r]);)r--;return r<0?t:0===r?t:r+u[e[r]]>t?r:t}(t),i=t;n!==t.length&&(h.uint8array?(i=t.subarray(0,n),this.leftOver=t.subarray(n,t.length)):(i=t.slice(0,n),this.leftOver=t.slice(n,t.length))),this.push({data:s.utf8decode(i),meta:e.meta});},a.prototype.flush=function(){this.leftOver&&this.leftOver.length&&(this.push({data:s.utf8decode(this.leftOver),meta:{}}),this.leftOver=null);},s.Utf8DecodeWorker=a,o.inherits(l,n),l.prototype.processChunk=function(e){this.push({data:s.utf8encode(e.data),meta:e.meta});},s.Utf8EncodeWorker=l;},{"./nodejsUtils":14,"./stream/GenericWorker":28,"./support":30,"./utils":32}],32:[function(e,t,a){var o=e("./support"),h=e("./base64"),r=e("./nodejsUtils"),u=e("./external");function n(e){return e}function l(e,t){for(var r=0;r<e.length;++r)t[r]=255&e.charCodeAt(r);return t}e("setimmediate"),a.newBlob=function(t,r){a.checkSupport("blob");try{return new Blob([t],{type:r})}catch(e){try{var n=new(self.BlobBuilder||self.WebKitBlobBuilder||self.MozBlobBuilder||self.MSBlobBuilder);return n.append(t),n.getBlob(r)}catch(e){throw new Error("Bug : can't construct the Blob.")}}};var i={stringifyByChunk:function(e,t,r){var n=[],i=0,s=e.length;if(s<=r)return String.fromCharCode.apply(null,e);for(;i<s;)"array"===t||"nodebuffer"===t?n.push(String.fromCharCode.apply(null,e.slice(i,Math.min(i+r,s)))):n.push(String.fromCharCode.apply(null,e.subarray(i,Math.min(i+r,s)))),i+=r;return n.join("")},stringifyByChar:function(e){for(var t="",r=0;r<e.length;r++)t+=String.fromCharCode(e[r]);return t},applyCanBeUsed:{uint8array:function(){try{return o.uint8array&&1===String.fromCharCode.apply(null,new Uint8Array(1)).length}catch(e){return !1}}(),nodebuffer:function(){try{return o.nodebuffer&&1===String.fromCharCode.apply(null,r.allocBuffer(1)).length}catch(e){return !1}}()}};function s(e){var t=65536,r=a.getTypeOf(e),n=!0;if("uint8array"===r?n=i.applyCanBeUsed.uint8array:"nodebuffer"===r&&(n=i.applyCanBeUsed.nodebuffer),n)for(;1<t;)try{return i.stringifyByChunk(e,r,t)}catch(e){t=Math.floor(t/2);}return i.stringifyByChar(e)}function f(e,t){for(var r=0;r<e.length;r++)t[r]=e[r];return t}a.applyFromCharCode=s;var c={};c.string={string:n,array:function(e){return l(e,new Array(e.length))},arraybuffer:function(e){return c.string.uint8array(e).buffer},uint8array:function(e){return l(e,new Uint8Array(e.length))},nodebuffer:function(e){return l(e,r.allocBuffer(e.length))}},c.array={string:s,array:n,arraybuffer:function(e){return new Uint8Array(e).buffer},uint8array:function(e){return new Uint8Array(e)},nodebuffer:function(e){return r.newBufferFrom(e)}},c.arraybuffer={string:function(e){return s(new Uint8Array(e))},array:function(e){return f(new Uint8Array(e),new Array(e.byteLength))},arraybuffer:n,uint8array:function(e){return new Uint8Array(e)},nodebuffer:function(e){return r.newBufferFrom(new Uint8Array(e))}},c.uint8array={string:s,array:function(e){return f(e,new Array(e.length))},arraybuffer:function(e){return e.buffer},uint8array:n,nodebuffer:function(e){return r.newBufferFrom(e)}},c.nodebuffer={string:s,array:function(e){return f(e,new Array(e.length))},arraybuffer:function(e){return c.nodebuffer.uint8array(e).buffer},uint8array:function(e){return f(e,new Uint8Array(e.length))},nodebuffer:n},a.transformTo=function(e,t){if(t=t||"",!e)return t;a.checkSupport(e);var r=a.getTypeOf(t);return c[r][e](t)},a.resolve=function(e){for(var t=e.split("/"),r=[],n=0;n<t.length;n++){var i=t[n];"."===i||""===i&&0!==n&&n!==t.length-1||(".."===i?r.pop():r.push(i));}return r.join("/")},a.getTypeOf=function(e){return "string"==typeof e?"string":"[object Array]"===Object.prototype.toString.call(e)?"array":o.nodebuffer&&r.isBuffer(e)?"nodebuffer":o.uint8array&&e instanceof Uint8Array?"uint8array":o.arraybuffer&&e instanceof ArrayBuffer?"arraybuffer":void 0},a.checkSupport=function(e){if(!o[e.toLowerCase()])throw new Error(e+" is not supported by this platform")},a.MAX_VALUE_16BITS=65535,a.MAX_VALUE_32BITS=-1,a.pretty=function(e){var t,r,n="";for(r=0;r<(e||"").length;r++)n+="\\x"+((t=e.charCodeAt(r))<16?"0":"")+t.toString(16).toUpperCase();return n},a.delay=function(e,t,r){setImmediate(function(){e.apply(r||null,t||[]);});},a.inherits=function(e,t){function r(){}r.prototype=t.prototype,e.prototype=new r;},a.extend=function(){var e,t,r={};for(e=0;e<arguments.length;e++)for(t in arguments[e])Object.prototype.hasOwnProperty.call(arguments[e],t)&&void 0===r[t]&&(r[t]=arguments[e][t]);return r},a.prepareContent=function(r,e,n,i,s){return u.Promise.resolve(e).then(function(n){return o.blob&&(n instanceof Blob||-1!==["[object File]","[object Blob]"].indexOf(Object.prototype.toString.call(n)))&&"undefined"!=typeof FileReader?new u.Promise(function(t,r){var e=new FileReader;e.onload=function(e){t(e.target.result);},e.onerror=function(e){r(e.target.error);},e.readAsArrayBuffer(n);}):n}).then(function(e){var t=a.getTypeOf(e);return t?("arraybuffer"===t?e=a.transformTo("uint8array",e):"string"===t&&(s?e=h.decode(e):n&&!0!==i&&(e=function(e){return l(e,o.uint8array?new Uint8Array(e.length):new Array(e.length))}(e))),e):u.Promise.reject(new Error("Can't read the data of '"+r+"'. Is it in a supported JavaScript type (String, Blob, ArrayBuffer, etc) ?"))})};},{"./base64":1,"./external":6,"./nodejsUtils":14,"./support":30,setimmediate:54}],33:[function(e,t,r){var n=e("./reader/readerFor"),i=e("./utils"),s=e("./signature"),a=e("./zipEntry"),o=e("./support");function h(e){this.files=[],this.loadOptions=e;}h.prototype={checkSignature:function(e){if(!this.reader.readAndCheckSignature(e)){this.reader.index-=4;var t=this.reader.readString(4);throw new Error("Corrupted zip or bug: unexpected signature ("+i.pretty(t)+", expected "+i.pretty(e)+")")}},isSignature:function(e,t){var r=this.reader.index;this.reader.setIndex(e);var n=this.reader.readString(4)===t;return this.reader.setIndex(r),n},readBlockEndOfCentral:function(){this.diskNumber=this.reader.readInt(2),this.diskWithCentralDirStart=this.reader.readInt(2),this.centralDirRecordsOnThisDisk=this.reader.readInt(2),this.centralDirRecords=this.reader.readInt(2),this.centralDirSize=this.reader.readInt(4),this.centralDirOffset=this.reader.readInt(4),this.zipCommentLength=this.reader.readInt(2);var e=this.reader.readData(this.zipCommentLength),t=o.uint8array?"uint8array":"array",r=i.transformTo(t,e);this.zipComment=this.loadOptions.decodeFileName(r);},readBlockZip64EndOfCentral:function(){this.zip64EndOfCentralSize=this.reader.readInt(8),this.reader.skip(4),this.diskNumber=this.reader.readInt(4),this.diskWithCentralDirStart=this.reader.readInt(4),this.centralDirRecordsOnThisDisk=this.reader.readInt(8),this.centralDirRecords=this.reader.readInt(8),this.centralDirSize=this.reader.readInt(8),this.centralDirOffset=this.reader.readInt(8),this.zip64ExtensibleData={};for(var e,t,r,n=this.zip64EndOfCentralSize-44;0<n;)e=this.reader.readInt(2),t=this.reader.readInt(4),r=this.reader.readData(t),this.zip64ExtensibleData[e]={id:e,length:t,value:r};},readBlockZip64EndOfCentralLocator:function(){if(this.diskWithZip64CentralDirStart=this.reader.readInt(4),this.relativeOffsetEndOfZip64CentralDir=this.reader.readInt(8),this.disksCount=this.reader.readInt(4),1<this.disksCount)throw new Error("Multi-volumes zip are not supported")},readLocalFiles:function(){var e,t;for(e=0;e<this.files.length;e++)t=this.files[e],this.reader.setIndex(t.localHeaderOffset),this.checkSignature(s.LOCAL_FILE_HEADER),t.readLocalPart(this.reader),t.handleUTF8(),t.processAttributes();},readCentralDir:function(){var e;for(this.reader.setIndex(this.centralDirOffset);this.reader.readAndCheckSignature(s.CENTRAL_FILE_HEADER);)(e=new a({zip64:this.zip64},this.loadOptions)).readCentralPart(this.reader),this.files.push(e);if(this.centralDirRecords!==this.files.length&&0!==this.centralDirRecords&&0===this.files.length)throw new Error("Corrupted zip or bug: expected "+this.centralDirRecords+" records in central dir, got "+this.files.length)},readEndOfCentral:function(){var e=this.reader.lastIndexOfSignature(s.CENTRAL_DIRECTORY_END);if(e<0)throw !this.isSignature(0,s.LOCAL_FILE_HEADER)?new Error("Can't find end of central directory : is this a zip file ? If it is, see https://stuk.github.io/jszip/documentation/howto/read_zip.html"):new Error("Corrupted zip: can't find end of central directory");this.reader.setIndex(e);var t=e;if(this.checkSignature(s.CENTRAL_DIRECTORY_END),this.readBlockEndOfCentral(),this.diskNumber===i.MAX_VALUE_16BITS||this.diskWithCentralDirStart===i.MAX_VALUE_16BITS||this.centralDirRecordsOnThisDisk===i.MAX_VALUE_16BITS||this.centralDirRecords===i.MAX_VALUE_16BITS||this.centralDirSize===i.MAX_VALUE_32BITS||this.centralDirOffset===i.MAX_VALUE_32BITS){if(this.zip64=!0,(e=this.reader.lastIndexOfSignature(s.ZIP64_CENTRAL_DIRECTORY_LOCATOR))<0)throw new Error("Corrupted zip: can't find the ZIP64 end of central directory locator");if(this.reader.setIndex(e),this.checkSignature(s.ZIP64_CENTRAL_DIRECTORY_LOCATOR),this.readBlockZip64EndOfCentralLocator(),!this.isSignature(this.relativeOffsetEndOfZip64CentralDir,s.ZIP64_CENTRAL_DIRECTORY_END)&&(this.relativeOffsetEndOfZip64CentralDir=this.reader.lastIndexOfSignature(s.ZIP64_CENTRAL_DIRECTORY_END),this.relativeOffsetEndOfZip64CentralDir<0))throw new Error("Corrupted zip: can't find the ZIP64 end of central directory");this.reader.setIndex(this.relativeOffsetEndOfZip64CentralDir),this.checkSignature(s.ZIP64_CENTRAL_DIRECTORY_END),this.readBlockZip64EndOfCentral();}var r=this.centralDirOffset+this.centralDirSize;this.zip64&&(r+=20,r+=12+this.zip64EndOfCentralSize);var n=t-r;if(0<n)this.isSignature(t,s.CENTRAL_FILE_HEADER)||(this.reader.zero=n);else if(n<0)throw new Error("Corrupted zip: missing "+Math.abs(n)+" bytes.")},prepareReader:function(e){this.reader=n(e);},load:function(e){this.prepareReader(e),this.readEndOfCentral(),this.readCentralDir(),this.readLocalFiles();}},t.exports=h;},{"./reader/readerFor":22,"./signature":23,"./support":30,"./utils":32,"./zipEntry":34}],34:[function(e,t,r){var n=e("./reader/readerFor"),s=e("./utils"),i=e("./compressedObject"),a=e("./crc32"),o=e("./utf8"),h=e("./compressions"),u=e("./support");function l(e,t){this.options=e,this.loadOptions=t;}l.prototype={isEncrypted:function(){return 1==(1&this.bitFlag)},useUTF8:function(){return 2048==(2048&this.bitFlag)},readLocalPart:function(e){var t,r;if(e.skip(22),this.fileNameLength=e.readInt(2),r=e.readInt(2),this.fileName=e.readData(this.fileNameLength),e.skip(r),-1===this.compressedSize||-1===this.uncompressedSize)throw new Error("Bug or corrupted zip : didn't get enough information from the central directory (compressedSize === -1 || uncompressedSize === -1)");if(null===(t=function(e){for(var t in h)if(Object.prototype.hasOwnProperty.call(h,t)&&h[t].magic===e)return h[t];return null}(this.compressionMethod)))throw new Error("Corrupted zip : compression "+s.pretty(this.compressionMethod)+" unknown (inner file : "+s.transformTo("string",this.fileName)+")");this.decompressed=new i(this.compressedSize,this.uncompressedSize,this.crc32,t,e.readData(this.compressedSize));},readCentralPart:function(e){this.versionMadeBy=e.readInt(2),e.skip(2),this.bitFlag=e.readInt(2),this.compressionMethod=e.readString(2),this.date=e.readDate(),this.crc32=e.readInt(4),this.compressedSize=e.readInt(4),this.uncompressedSize=e.readInt(4);var t=e.readInt(2);if(this.extraFieldsLength=e.readInt(2),this.fileCommentLength=e.readInt(2),this.diskNumberStart=e.readInt(2),this.internalFileAttributes=e.readInt(2),this.externalFileAttributes=e.readInt(4),this.localHeaderOffset=e.readInt(4),this.isEncrypted())throw new Error("Encrypted zip are not supported");e.skip(t),this.readExtraFields(e),this.parseZIP64ExtraField(e),this.fileComment=e.readData(this.fileCommentLength);},processAttributes:function(){this.unixPermissions=null,this.dosPermissions=null;var e=this.versionMadeBy>>8;this.dir=!!(16&this.externalFileAttributes),0==e&&(this.dosPermissions=63&this.externalFileAttributes),3==e&&(this.unixPermissions=this.externalFileAttributes>>16&65535),this.dir||"/"!==this.fileNameStr.slice(-1)||(this.dir=!0);},parseZIP64ExtraField:function(){if(this.extraFields[1]){var e=n(this.extraFields[1].value);this.uncompressedSize===s.MAX_VALUE_32BITS&&(this.uncompressedSize=e.readInt(8)),this.compressedSize===s.MAX_VALUE_32BITS&&(this.compressedSize=e.readInt(8)),this.localHeaderOffset===s.MAX_VALUE_32BITS&&(this.localHeaderOffset=e.readInt(8)),this.diskNumberStart===s.MAX_VALUE_32BITS&&(this.diskNumberStart=e.readInt(4));}},readExtraFields:function(e){var t,r,n,i=e.index+this.extraFieldsLength;for(this.extraFields||(this.extraFields={});e.index+4<i;)t=e.readInt(2),r=e.readInt(2),n=e.readData(r),this.extraFields[t]={id:t,length:r,value:n};e.setIndex(i);},handleUTF8:function(){var e=u.uint8array?"uint8array":"array";if(this.useUTF8())this.fileNameStr=o.utf8decode(this.fileName),this.fileCommentStr=o.utf8decode(this.fileComment);else {var t=this.findExtraFieldUnicodePath();if(null!==t)this.fileNameStr=t;else {var r=s.transformTo(e,this.fileName);this.fileNameStr=this.loadOptions.decodeFileName(r);}var n=this.findExtraFieldUnicodeComment();if(null!==n)this.fileCommentStr=n;else {var i=s.transformTo(e,this.fileComment);this.fileCommentStr=this.loadOptions.decodeFileName(i);}}},findExtraFieldUnicodePath:function(){var e=this.extraFields[28789];if(e){var t=n(e.value);return 1!==t.readInt(1)?null:a(this.fileName)!==t.readInt(4)?null:o.utf8decode(t.readData(e.length-5))}return null},findExtraFieldUnicodeComment:function(){var e=this.extraFields[25461];if(e){var t=n(e.value);return 1!==t.readInt(1)?null:a(this.fileComment)!==t.readInt(4)?null:o.utf8decode(t.readData(e.length-5))}return null}},t.exports=l;},{"./compressedObject":2,"./compressions":3,"./crc32":4,"./reader/readerFor":22,"./support":30,"./utf8":31,"./utils":32}],35:[function(e,t,r){function n(e,t,r){this.name=e,this.dir=r.dir,this.date=r.date,this.comment=r.comment,this.unixPermissions=r.unixPermissions,this.dosPermissions=r.dosPermissions,this._data=t,this._dataBinary=r.binary,this.options={compression:r.compression,compressionOptions:r.compressionOptions};}var s=e("./stream/StreamHelper"),i=e("./stream/DataWorker"),a=e("./utf8"),o=e("./compressedObject"),h=e("./stream/GenericWorker");n.prototype={internalStream:function(e){var t=null,r="string";try{if(!e)throw new Error("No output type specified.");var n="string"===(r=e.toLowerCase())||"text"===r;"binarystring"!==r&&"text"!==r||(r="string"),t=this._decompressWorker();var i=!this._dataBinary;i&&!n&&(t=t.pipe(new a.Utf8EncodeWorker)),!i&&n&&(t=t.pipe(new a.Utf8DecodeWorker));}catch(e){(t=new h("error")).error(e);}return new s(t,r,"")},async:function(e,t){return this.internalStream(e).accumulate(t)},nodeStream:function(e,t){return this.internalStream(e||"nodebuffer").toNodejsStream(t)},_compressWorker:function(e,t){if(this._data instanceof o&&this._data.compression.magic===e.magic)return this._data.getCompressedWorker();var r=this._decompressWorker();return this._dataBinary||(r=r.pipe(new a.Utf8EncodeWorker)),o.createWorkerFrom(r,e,t)},_decompressWorker:function(){return this._data instanceof o?this._data.getContentWorker():this._data instanceof h?this._data:new i(this._data)}};for(var u=["asText","asBinary","asNodeBuffer","asUint8Array","asArrayBuffer"],l=function(){throw new Error("This method has been removed in JSZip 3.0, please check the upgrade guide.")},f=0;f<u.length;f++)n.prototype[u[f]]=l;t.exports=n;},{"./compressedObject":2,"./stream/DataWorker":27,"./stream/GenericWorker":28,"./stream/StreamHelper":29,"./utf8":31}],36:[function(e,l,t){(function(t){var r,n,e=t.MutationObserver||t.WebKitMutationObserver;if(e){var i=0,s=new e(u),a=t.document.createTextNode("");s.observe(a,{characterData:!0}),r=function(){a.data=i=++i%2;};}else if(t.setImmediate||void 0===t.MessageChannel)r="document"in t&&"onreadystatechange"in t.document.createElement("script")?function(){var e=t.document.createElement("script");e.onreadystatechange=function(){u(),e.onreadystatechange=null,e.parentNode.removeChild(e),e=null;},t.document.documentElement.appendChild(e);}:function(){setTimeout(u,0);};else {var o=new t.MessageChannel;o.port1.onmessage=u,r=function(){o.port2.postMessage(0);};}var h=[];function u(){var e,t;n=!0;for(var r=h.length;r;){for(t=h,h=[],e=-1;++e<r;)t[e]();r=h.length;}n=!1;}l.exports=function(e){1!==h.push(e)||n||r();};}).call(this,"undefined"!=typeof commonjsGlobal?commonjsGlobal:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{});},{}],37:[function(e,t,r){var i=e("immediate");function u(){}var l={},s=["REJECTED"],a=["FULFILLED"],n=["PENDING"];function o(e){if("function"!=typeof e)throw new TypeError("resolver must be a function");this.state=n,this.queue=[],this.outcome=void 0,e!==u&&d(this,e);}function h(e,t,r){this.promise=e,"function"==typeof t&&(this.onFulfilled=t,this.callFulfilled=this.otherCallFulfilled),"function"==typeof r&&(this.onRejected=r,this.callRejected=this.otherCallRejected);}function f(t,r,n){i(function(){var e;try{e=r(n);}catch(e){return l.reject(t,e)}e===t?l.reject(t,new TypeError("Cannot resolve promise with itself")):l.resolve(t,e);});}function c(e){var t=e&&e.then;if(e&&("object"==typeof e||"function"==typeof e)&&"function"==typeof t)return function(){t.apply(e,arguments);}}function d(t,e){var r=!1;function n(e){r||(r=!0,l.reject(t,e));}function i(e){r||(r=!0,l.resolve(t,e));}var s=p(function(){e(i,n);});"error"===s.status&&n(s.value);}function p(e,t){var r={};try{r.value=e(t),r.status="success";}catch(e){r.status="error",r.value=e;}return r}(t.exports=o).prototype.finally=function(t){if("function"!=typeof t)return this;var r=this.constructor;return this.then(function(e){return r.resolve(t()).then(function(){return e})},function(e){return r.resolve(t()).then(function(){throw e})})},o.prototype.catch=function(e){return this.then(null,e)},o.prototype.then=function(e,t){if("function"!=typeof e&&this.state===a||"function"!=typeof t&&this.state===s)return this;var r=new this.constructor(u);this.state!==n?f(r,this.state===a?e:t,this.outcome):this.queue.push(new h(r,e,t));return r},h.prototype.callFulfilled=function(e){l.resolve(this.promise,e);},h.prototype.otherCallFulfilled=function(e){f(this.promise,this.onFulfilled,e);},h.prototype.callRejected=function(e){l.reject(this.promise,e);},h.prototype.otherCallRejected=function(e){f(this.promise,this.onRejected,e);},l.resolve=function(e,t){var r=p(c,t);if("error"===r.status)return l.reject(e,r.value);var n=r.value;if(n)d(e,n);else {e.state=a,e.outcome=t;for(var i=-1,s=e.queue.length;++i<s;)e.queue[i].callFulfilled(t);}return e},l.reject=function(e,t){e.state=s,e.outcome=t;for(var r=-1,n=e.queue.length;++r<n;)e.queue[r].callRejected(t);return e},o.resolve=function(e){if(e instanceof this)return e;return l.resolve(new this(u),e)},o.reject=function(e){var t=new this(u);return l.reject(t,e)},o.all=function(e){var r=this;if("[object Array]"!==Object.prototype.toString.call(e))return this.reject(new TypeError("must be an array"));var n=e.length,i=!1;if(!n)return this.resolve([]);var s=new Array(n),a=0,t=-1,o=new this(u);for(;++t<n;)h(e[t],t);return o;function h(e,t){r.resolve(e).then(function(e){s[t]=e,++a!==n||i||(i=!0,l.resolve(o,s));},function(e){i||(i=!0,l.reject(o,e));});}},o.race=function(e){var t=this;if("[object Array]"!==Object.prototype.toString.call(e))return this.reject(new TypeError("must be an array"));var r=e.length,n=!1;if(!r)return this.resolve([]);var i=-1,s=new this(u);for(;++i<r;)a=e[i],t.resolve(a).then(function(e){n||(n=!0,l.resolve(s,e));},function(e){n||(n=!0,l.reject(s,e));});var a;return s};},{immediate:36}],38:[function(e,t,r){var n={};(0, e("./lib/utils/common").assign)(n,e("./lib/deflate"),e("./lib/inflate"),e("./lib/zlib/constants")),t.exports=n;},{"./lib/deflate":39,"./lib/inflate":40,"./lib/utils/common":41,"./lib/zlib/constants":44}],39:[function(e,t,r){var a=e("./zlib/deflate"),o=e("./utils/common"),h=e("./utils/strings"),i=e("./zlib/messages"),s=e("./zlib/zstream"),u=Object.prototype.toString,l=0,f=-1,c=0,d=8;function p(e){if(!(this instanceof p))return new p(e);this.options=o.assign({level:f,method:d,chunkSize:16384,windowBits:15,memLevel:8,strategy:c,to:""},e||{});var t=this.options;t.raw&&0<t.windowBits?t.windowBits=-t.windowBits:t.gzip&&0<t.windowBits&&t.windowBits<16&&(t.windowBits+=16),this.err=0,this.msg="",this.ended=!1,this.chunks=[],this.strm=new s,this.strm.avail_out=0;var r=a.deflateInit2(this.strm,t.level,t.method,t.windowBits,t.memLevel,t.strategy);if(r!==l)throw new Error(i[r]);if(t.header&&a.deflateSetHeader(this.strm,t.header),t.dictionary){var n;if(n="string"==typeof t.dictionary?h.string2buf(t.dictionary):"[object ArrayBuffer]"===u.call(t.dictionary)?new Uint8Array(t.dictionary):t.dictionary,(r=a.deflateSetDictionary(this.strm,n))!==l)throw new Error(i[r]);this._dict_set=!0;}}function n(e,t){var r=new p(t);if(r.push(e,!0),r.err)throw r.msg||i[r.err];return r.result}p.prototype.push=function(e,t){var r,n,i=this.strm,s=this.options.chunkSize;if(this.ended)return !1;n=t===~~t?t:!0===t?4:0,"string"==typeof e?i.input=h.string2buf(e):"[object ArrayBuffer]"===u.call(e)?i.input=new Uint8Array(e):i.input=e,i.next_in=0,i.avail_in=i.input.length;do{if(0===i.avail_out&&(i.output=new o.Buf8(s),i.next_out=0,i.avail_out=s),1!==(r=a.deflate(i,n))&&r!==l)return this.onEnd(r),!(this.ended=!0);0!==i.avail_out&&(0!==i.avail_in||4!==n&&2!==n)||("string"===this.options.to?this.onData(h.buf2binstring(o.shrinkBuf(i.output,i.next_out))):this.onData(o.shrinkBuf(i.output,i.next_out)));}while((0<i.avail_in||0===i.avail_out)&&1!==r);return 4===n?(r=a.deflateEnd(this.strm),this.onEnd(r),this.ended=!0,r===l):2!==n||(this.onEnd(l),!(i.avail_out=0))},p.prototype.onData=function(e){this.chunks.push(e);},p.prototype.onEnd=function(e){e===l&&("string"===this.options.to?this.result=this.chunks.join(""):this.result=o.flattenChunks(this.chunks)),this.chunks=[],this.err=e,this.msg=this.strm.msg;},r.Deflate=p,r.deflate=n,r.deflateRaw=function(e,t){return (t=t||{}).raw=!0,n(e,t)},r.gzip=function(e,t){return (t=t||{}).gzip=!0,n(e,t)};},{"./utils/common":41,"./utils/strings":42,"./zlib/deflate":46,"./zlib/messages":51,"./zlib/zstream":53}],40:[function(e,t,r){var c=e("./zlib/inflate"),d=e("./utils/common"),p=e("./utils/strings"),m=e("./zlib/constants"),n=e("./zlib/messages"),i=e("./zlib/zstream"),s=e("./zlib/gzheader"),_=Object.prototype.toString;function a(e){if(!(this instanceof a))return new a(e);this.options=d.assign({chunkSize:16384,windowBits:0,to:""},e||{});var t=this.options;t.raw&&0<=t.windowBits&&t.windowBits<16&&(t.windowBits=-t.windowBits,0===t.windowBits&&(t.windowBits=-15)),!(0<=t.windowBits&&t.windowBits<16)||e&&e.windowBits||(t.windowBits+=32),15<t.windowBits&&t.windowBits<48&&0==(15&t.windowBits)&&(t.windowBits|=15),this.err=0,this.msg="",this.ended=!1,this.chunks=[],this.strm=new i,this.strm.avail_out=0;var r=c.inflateInit2(this.strm,t.windowBits);if(r!==m.Z_OK)throw new Error(n[r]);this.header=new s,c.inflateGetHeader(this.strm,this.header);}function o(e,t){var r=new a(t);if(r.push(e,!0),r.err)throw r.msg||n[r.err];return r.result}a.prototype.push=function(e,t){var r,n,i,s,a,o,h=this.strm,u=this.options.chunkSize,l=this.options.dictionary,f=!1;if(this.ended)return !1;n=t===~~t?t:!0===t?m.Z_FINISH:m.Z_NO_FLUSH,"string"==typeof e?h.input=p.binstring2buf(e):"[object ArrayBuffer]"===_.call(e)?h.input=new Uint8Array(e):h.input=e,h.next_in=0,h.avail_in=h.input.length;do{if(0===h.avail_out&&(h.output=new d.Buf8(u),h.next_out=0,h.avail_out=u),(r=c.inflate(h,m.Z_NO_FLUSH))===m.Z_NEED_DICT&&l&&(o="string"==typeof l?p.string2buf(l):"[object ArrayBuffer]"===_.call(l)?new Uint8Array(l):l,r=c.inflateSetDictionary(this.strm,o)),r===m.Z_BUF_ERROR&&!0===f&&(r=m.Z_OK,f=!1),r!==m.Z_STREAM_END&&r!==m.Z_OK)return this.onEnd(r),!(this.ended=!0);h.next_out&&(0!==h.avail_out&&r!==m.Z_STREAM_END&&(0!==h.avail_in||n!==m.Z_FINISH&&n!==m.Z_SYNC_FLUSH)||("string"===this.options.to?(i=p.utf8border(h.output,h.next_out),s=h.next_out-i,a=p.buf2string(h.output,i),h.next_out=s,h.avail_out=u-s,s&&d.arraySet(h.output,h.output,i,s,0),this.onData(a)):this.onData(d.shrinkBuf(h.output,h.next_out)))),0===h.avail_in&&0===h.avail_out&&(f=!0);}while((0<h.avail_in||0===h.avail_out)&&r!==m.Z_STREAM_END);return r===m.Z_STREAM_END&&(n=m.Z_FINISH),n===m.Z_FINISH?(r=c.inflateEnd(this.strm),this.onEnd(r),this.ended=!0,r===m.Z_OK):n!==m.Z_SYNC_FLUSH||(this.onEnd(m.Z_OK),!(h.avail_out=0))},a.prototype.onData=function(e){this.chunks.push(e);},a.prototype.onEnd=function(e){e===m.Z_OK&&("string"===this.options.to?this.result=this.chunks.join(""):this.result=d.flattenChunks(this.chunks)),this.chunks=[],this.err=e,this.msg=this.strm.msg;},r.Inflate=a,r.inflate=o,r.inflateRaw=function(e,t){return (t=t||{}).raw=!0,o(e,t)},r.ungzip=o;},{"./utils/common":41,"./utils/strings":42,"./zlib/constants":44,"./zlib/gzheader":47,"./zlib/inflate":49,"./zlib/messages":51,"./zlib/zstream":53}],41:[function(e,t,r){var n="undefined"!=typeof Uint8Array&&"undefined"!=typeof Uint16Array&&"undefined"!=typeof Int32Array;r.assign=function(e){for(var t=Array.prototype.slice.call(arguments,1);t.length;){var r=t.shift();if(r){if("object"!=typeof r)throw new TypeError(r+"must be non-object");for(var n in r)r.hasOwnProperty(n)&&(e[n]=r[n]);}}return e},r.shrinkBuf=function(e,t){return e.length===t?e:e.subarray?e.subarray(0,t):(e.length=t,e)};var i={arraySet:function(e,t,r,n,i){if(t.subarray&&e.subarray)e.set(t.subarray(r,r+n),i);else for(var s=0;s<n;s++)e[i+s]=t[r+s];},flattenChunks:function(e){var t,r,n,i,s,a;for(t=n=0,r=e.length;t<r;t++)n+=e[t].length;for(a=new Uint8Array(n),t=i=0,r=e.length;t<r;t++)s=e[t],a.set(s,i),i+=s.length;return a}},s={arraySet:function(e,t,r,n,i){for(var 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h,c=e("../utils/common"),u=e("./trees"),d=e("./adler32"),p=e("./crc32"),n=e("./messages"),l=0,f=4,m=0,_=-2,g=-1,b=4,i=2,v=8,y=9,s=286,a=30,o=19,w=2*s+1,k=15,x=3,S=258,z=S+x+1,C=42,E=113,A=1,I=2,O=3,B=4;function R(e,t){return e.msg=n[t],t}function T(e){return (e<<1)-(4<e?9:0)}function D(e){for(var t=e.length;0<=--t;)e[t]=0;}function F(e){var t=e.state,r=t.pending;r>e.avail_out&&(r=e.avail_out),0!==r&&(c.arraySet(e.output,t.pending_buf,t.pending_out,r,e.next_out),e.next_out+=r,t.pending_out+=r,e.total_out+=r,e.avail_out-=r,t.pending-=r,0===t.pending&&(t.pending_out=0));}function N(e,t){u._tr_flush_block(e,0<=e.block_start?e.block_start:-1,e.strstart-e.block_start,t),e.block_start=e.strstart,F(e.strm);}function U(e,t){e.pending_buf[e.pending++]=t;}function P(e,t){e.pending_buf[e.pending++]=t>>>8&255,e.pending_buf[e.pending++]=255&t;}function L(e,t){var r,n,i=e.max_chain_length,s=e.strstart,a=e.prev_length,o=e.nice_match,h=e.strstart>e.w_size-z?e.strstart-(e.w_size-z):0,u=e.window,l=e.w_mask,f=e.prev,c=e.strstart+S,d=u[s+a-1],p=u[s+a];e.prev_length>=e.good_match&&(i>>=2),o>e.lookahead&&(o=e.lookahead);do{if(u[(r=t)+a]===p&&u[r+a-1]===d&&u[r]===u[s]&&u[++r]===u[s+1]){s+=2,r++;do{}while(u[++s]===u[++r]&&u[++s]===u[++r]&&u[++s]===u[++r]&&u[++s]===u[++r]&&u[++s]===u[++r]&&u[++s]===u[++r]&&u[++s]===u[++r]&&u[++s]===u[++r]&&s<c);if(n=S-(c-s),s=c-S,a<n){if(e.match_start=t,o<=(a=n))break;d=u[s+a-1],p=u[s+a];}}}while((t=f[t&l])>h&&0!=--i);return a<=e.lookahead?a:e.lookahead}function j(e){var t,r,n,i,s,a,o,h,u,l,f=e.w_size;do{if(i=e.window_size-e.lookahead-e.strstart,e.strstart>=f+(f-z)){for(c.arraySet(e.window,e.window,f,f,0),e.match_start-=f,e.strstart-=f,e.block_start-=f,t=r=e.hash_size;n=e.head[--t],e.head[t]=f<=n?n-f:0,--r;);for(t=r=f;n=e.prev[--t],e.prev[t]=f<=n?n-f:0,--r;);i+=f;}if(0===e.strm.avail_in)break;if(a=e.strm,o=e.window,h=e.strstart+e.lookahead,u=i,l=void 0,l=a.avail_in,u<l&&(l=u),r=0===l?0:(a.avail_in-=l,c.arraySet(o,a.input,a.next_in,l,h),1===a.state.wrap?a.adler=d(a.adler,o,l,h):2===a.state.wrap&&(a.adler=p(a.adler,o,l,h)),a.next_in+=l,a.total_in+=l,l),e.lookahead+=r,e.lookahead+e.insert>=x)for(s=e.strstart-e.insert,e.ins_h=e.window[s],e.ins_h=(e.ins_h<<e.hash_shift^e.window[s+1])&e.hash_mask;e.insert&&(e.ins_h=(e.ins_h<<e.hash_shift^e.window[s+x-1])&e.hash_mask,e.prev[s&e.w_mask]=e.head[e.ins_h],e.head[e.ins_h]=s,s++,e.insert--,!(e.lookahead+e.insert<x)););}while(e.lookahead<z&&0!==e.strm.avail_in)}function Z(e,t){for(var r,n;;){if(e.lookahead<z){if(j(e),e.lookahead<z&&t===l)return A;if(0===e.lookahead)break}if(r=0,e.lookahead>=x&&(e.ins_h=(e.ins_h<<e.hash_shift^e.window[e.strstart+x-1])&e.hash_mask,r=e.prev[e.strstart&e.w_mask]=e.head[e.ins_h],e.head[e.ins_h]=e.strstart),0!==r&&e.strstart-r<=e.w_size-z&&(e.match_length=L(e,r)),e.match_length>=x)if(n=u._tr_tally(e,e.strstart-e.match_start,e.match_length-x),e.lookahead-=e.match_length,e.match_length<=e.max_lazy_match&&e.lookahead>=x){for(e.match_length--;e.strstart++,e.ins_h=(e.ins_h<<e.hash_shift^e.window[e.strstart+x-1])&e.hash_mask,r=e.prev[e.strstart&e.w_mask]=e.head[e.ins_h],e.head[e.ins_h]=e.strstart,0!=--e.match_length;);e.strstart++;}else e.strstart+=e.match_length,e.match_length=0,e.ins_h=e.window[e.strstart],e.ins_h=(e.ins_h<<e.hash_shift^e.window[e.strstart+1])&e.hash_mask;else n=u._tr_tally(e,0,e.window[e.strstart]),e.lookahead--,e.strstart++;if(n&&(N(e,!1),0===e.strm.avail_out))return A}return e.insert=e.strstart<x-1?e.strstart:x-1,t===f?(N(e,!0),0===e.strm.avail_out?O:B):e.last_lit&&(N(e,!1),0===e.strm.avail_out)?A:I}function W(e,t){for(var r,n,i;;){if(e.lookahead<z){if(j(e),e.lookahead<z&&t===l)return 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if(e.match_available){if((n=u._tr_tally(e,0,e.window[e.strstart-1]))&&N(e,!1),e.strstart++,e.lookahead--,0===e.strm.avail_out)return A}else e.match_available=1,e.strstart++,e.lookahead--;}return e.match_available&&(n=u._tr_tally(e,0,e.window[e.strstart-1]),e.match_available=0),e.insert=e.strstart<x-1?e.strstart:x-1,t===f?(N(e,!0),0===e.strm.avail_out?O:B):e.last_lit&&(N(e,!1),0===e.strm.avail_out)?A:I}function M(e,t,r,n,i){this.good_length=e,this.max_lazy=t,this.nice_length=r,this.max_chain=n,this.func=i;}function H(){this.strm=null,this.status=0,this.pending_buf=null,this.pending_buf_size=0,this.pending_out=0,this.pending=0,this.wrap=0,this.gzhead=null,this.gzindex=0,this.method=v,this.last_flush=-1,this.w_size=0,this.w_bits=0,this.w_mask=0,this.window=null,this.window_size=0,this.prev=null,this.head=null,this.ins_h=0,this.hash_size=0,this.hash_bits=0,this.hash_mask=0,this.hash_shift=0,this.block_start=0,this.match_length=0,this.prev_match=0,this.match_available=0,this.strstart=0,this.match_start=0,this.lookahead=0,this.prev_length=0,this.max_chain_length=0,this.max_lazy_match=0,this.level=0,this.strategy=0,this.good_match=0,this.nice_match=0,this.dyn_ltree=new c.Buf16(2*w),this.dyn_dtree=new c.Buf16(2*(2*a+1)),this.bl_tree=new c.Buf16(2*(2*o+1)),D(this.dyn_ltree),D(this.dyn_dtree),D(this.bl_tree),this.l_desc=null,this.d_desc=null,this.bl_desc=null,this.bl_count=new c.Buf16(k+1),this.heap=new c.Buf16(2*s+1),D(this.heap),this.heap_len=0,this.heap_max=0,this.depth=new c.Buf16(2*s+1),D(this.depth),this.l_buf=0,this.lit_bufsize=0,this.last_lit=0,this.d_buf=0,this.opt_len=0,this.static_len=0,this.matches=0,this.insert=0,this.bi_buf=0,this.bi_valid=0;}function G(e){var t;return e&&e.state?(e.total_in=e.total_out=0,e.data_type=i,(t=e.state).pending=0,t.pending_out=0,t.wrap<0&&(t.wrap=-t.wrap),t.status=t.wrap?C:E,e.adler=2===t.wrap?0:1,t.last_flush=l,u._tr_init(t),m):R(e,_)}function K(e){var t=G(e);return t===m&&function(e){e.window_size=2*e.w_size,D(e.head),e.max_lazy_match=h[e.level].max_lazy,e.good_match=h[e.level].good_length,e.nice_match=h[e.level].nice_length,e.max_chain_length=h[e.level].max_chain,e.strstart=0,e.block_start=0,e.lookahead=0,e.insert=0,e.match_length=e.prev_length=x-1,e.match_available=0,e.ins_h=0;}(e.state),t}function Y(e,t,r,n,i,s){if(!e)return _;var a=1;if(t===g&&(t=6),n<0?(a=0,n=-n):15<n&&(a=2,n-=16),i<1||y<i||r!==v||n<8||15<n||t<0||9<t||s<0||b<s)return R(e,_);8===n&&(n=9);var o=new H;return (e.state=o).strm=e,o.wrap=a,o.gzhead=null,o.w_bits=n,o.w_size=1<<o.w_bits,o.w_mask=o.w_size-1,o.hash_bits=i+7,o.hash_size=1<<o.hash_bits,o.hash_mask=o.hash_size-1,o.hash_shift=~~((o.hash_bits+x-1)/x),o.window=new c.Buf8(2*o.w_size),o.head=new c.Buf16(o.hash_size),o.prev=new c.Buf16(o.w_size),o.lit_bufsize=1<<i+6,o.pending_buf_size=4*o.lit_bufsize,o.pending_buf=new c.Buf8(o.pending_buf_size),o.d_buf=1*o.lit_bufsize,o.l_buf=3*o.lit_bufsize,o.level=t,o.strategy=s,o.method=r,K(e)}h=[new M(0,0,0,0,function(e,t){var r=65535;for(r>e.pending_buf_size-5&&(r=e.pending_buf_size-5);;){if(e.lookahead<=1){if(j(e),0===e.lookahead&&t===l)return A;if(0===e.lookahead)break}e.strstart+=e.lookahead,e.lookahead=0;var n=e.block_start+r;if((0===e.strstart||e.strstart>=n)&&(e.lookahead=e.strstart-n,e.strstart=n,N(e,!1),0===e.strm.avail_out))return A;if(e.strstart-e.block_start>=e.w_size-z&&(N(e,!1),0===e.strm.avail_out))return A}return e.insert=0,t===f?(N(e,!0),0===e.strm.avail_out?O:B):(e.strstart>e.block_start&&(N(e,!1),e.strm.avail_out),A)}),new M(4,4,8,4,Z),new M(4,5,16,8,Z),new M(4,6,32,32,Z),new M(4,4,16,16,W),new M(8,16,32,32,W),new M(8,16,128,128,W),new M(8,32,128,256,W),new M(32,128,258,1024,W),new M(32,258,258,4096,W)],r.deflateInit=function(e,t){return Y(e,t,v,15,8,0)},r.deflateInit2=Y,r.deflateReset=K,r.deflateResetKeep=G,r.deflateSetHeader=function(e,t){return e&&e.state?2!==e.state.wrap?_:(e.state.gzhead=t,m):_},r.deflate=function(e,t){var r,n,i,s;if(!e||!e.state||5<t||t<0)return e?R(e,_):_;if(n=e.state,!e.output||!e.input&&0!==e.avail_in||666===n.status&&t!==f)return R(e,0===e.avail_out?-5:_);if(n.strm=e,r=n.last_flush,n.last_flush=t,n.status===C)if(2===n.wrap)e.adler=0,U(n,31),U(n,139),U(n,8),n.gzhead?(U(n,(n.gzhead.text?1:0)+(n.gzhead.hcrc?2:0)+(n.gzhead.extra?4:0)+(n.gzhead.name?8:0)+(n.gzhead.comment?16:0)),U(n,255&n.gzhead.time),U(n,n.gzhead.time>>8&255),U(n,n.gzhead.time>>16&255),U(n,n.gzhead.time>>24&255),U(n,9===n.level?2:2<=n.strategy||n.level<2?4:0),U(n,255&n.gzhead.os),n.gzhead.extra&&n.gzhead.extra.length&&(U(n,255&n.gzhead.extra.length),U(n,n.gzhead.extra.length>>8&255)),n.gzhead.hcrc&&(e.adler=p(e.adler,n.pending_buf,n.pending,0)),n.gzindex=0,n.status=69):(U(n,0),U(n,0),U(n,0),U(n,0),U(n,0),U(n,9===n.level?2:2<=n.strategy||n.level<2?4:0),U(n,3),n.status=E);else {var a=v+(n.w_bits-8<<4)<<8;a|=(2<=n.strategy||n.level<2?0:n.level<6?1:6===n.level?2:3)<<6,0!==n.strstart&&(a|=32),a+=31-a%31,n.status=E,P(n,a),0!==n.strstart&&(P(n,e.adler>>>16),P(n,65535&e.adler)),e.adler=1;}if(69===n.status)if(n.gzhead.extra){for(i=n.pending;n.gzindex<(65535&n.gzhead.extra.length)&&(n.pending!==n.pending_buf_size||(n.gzhead.hcrc&&n.pending>i&&(e.adler=p(e.adler,n.pending_buf,n.pending-i,i)),F(e),i=n.pending,n.pending!==n.pending_buf_size));)U(n,255&n.gzhead.extra[n.gzindex]),n.gzindex++;n.gzhead.hcrc&&n.pending>i&&(e.adler=p(e.adler,n.pending_buf,n.pending-i,i)),n.gzindex===n.gzhead.extra.length&&(n.gzindex=0,n.status=73);}else n.status=73;if(73===n.status)if(n.gzhead.name){i=n.pending;do{if(n.pending===n.pending_buf_size&&(n.gzhead.hcrc&&n.pending>i&&(e.adler=p(e.adler,n.pending_buf,n.pending-i,i)),F(e),i=n.pending,n.pending===n.pending_buf_size)){s=1;break}s=n.gzindex<n.gzhead.name.length?255&n.gzhead.name.charCodeAt(n.gzindex++):0,U(n,s);}while(0!==s);n.gzhead.hcrc&&n.pending>i&&(e.adler=p(e.adler,n.pending_buf,n.pending-i,i)),0===s&&(n.gzindex=0,n.status=91);}else n.status=91;if(91===n.status)if(n.gzhead.comment){i=n.pending;do{if(n.pending===n.pending_buf_size&&(n.gzhead.hcrc&&n.pending>i&&(e.adler=p(e.adler,n.pending_buf,n.pending-i,i)),F(e),i=n.pending,n.pending===n.pending_buf_size)){s=1;break}s=n.gzindex<n.gzhead.comment.length?255&n.gzhead.comment.charCodeAt(n.gzindex++):0,U(n,s);}while(0!==s);n.gzhead.hcrc&&n.pending>i&&(e.adler=p(e.adler,n.pending_buf,n.pending-i,i)),0===s&&(n.status=103);}else n.status=103;if(103===n.status&&(n.gzhead.hcrc?(n.pending+2>n.pending_buf_size&&F(e),n.pending+2<=n.pending_buf_size&&(U(n,255&e.adler),U(n,e.adler>>8&255),e.adler=0,n.status=E)):n.status=E),0!==n.pending){if(F(e),0===e.avail_out)return n.last_flush=-1,m}else if(0===e.avail_in&&T(t)<=T(r)&&t!==f)return R(e,-5);if(666===n.status&&0!==e.avail_in)return R(e,-5);if(0!==e.avail_in||0!==n.lookahead||t!==l&&666!==n.status){var o=2===n.strategy?function(e,t){for(var r;;){if(0===e.lookahead&&(j(e),0===e.lookahead)){if(t===l)return A;break}if(e.match_length=0,r=u._tr_tally(e,0,e.window[e.strstart]),e.lookahead--,e.strstart++,r&&(N(e,!1),0===e.strm.avail_out))return A}return e.insert=0,t===f?(N(e,!0),0===e.strm.avail_out?O:B):e.last_lit&&(N(e,!1),0===e.strm.avail_out)?A:I}(n,t):3===n.strategy?function(e,t){for(var r,n,i,s,a=e.window;;){if(e.lookahead<=S){if(j(e),e.lookahead<=S&&t===l)return A;if(0===e.lookahead)break}if(e.match_length=0,e.lookahead>=x&&0<e.strstart&&(n=a[i=e.strstart-1])===a[++i]&&n===a[++i]&&n===a[++i]){s=e.strstart+S;do{}while(n===a[++i]&&n===a[++i]&&n===a[++i]&&n===a[++i]&&n===a[++i]&&n===a[++i]&&n===a[++i]&&n===a[++i]&&i<s);e.match_length=S-(s-i),e.match_length>e.lookahead&&(e.match_length=e.lookahead);}if(e.match_length>=x?(r=u._tr_tally(e,1,e.match_length-x),e.lookahead-=e.match_length,e.strstart+=e.match_length,e.match_length=0):(r=u._tr_tally(e,0,e.window[e.strstart]),e.lookahead--,e.strstart++),r&&(N(e,!1),0===e.strm.avail_out))return A}return e.insert=0,t===f?(N(e,!0),0===e.strm.avail_out?O:B):e.last_lit&&(N(e,!1),0===e.strm.avail_out)?A:I}(n,t):h[n.level].func(n,t);if(o!==O&&o!==B||(n.status=666),o===A||o===O)return 0===e.avail_out&&(n.last_flush=-1),m;if(o===I&&(1===t?u._tr_align(n):5!==t&&(u._tr_stored_block(n,0,0,!1),3===t&&(D(n.head),0===n.lookahead&&(n.strstart=0,n.block_start=0,n.insert=0))),F(e),0===e.avail_out))return n.last_flush=-1,m}return t!==f?m:n.wrap<=0?1:(2===n.wrap?(U(n,255&e.adler),U(n,e.adler>>8&255),U(n,e.adler>>16&255),U(n,e.adler>>24&255),U(n,255&e.total_in),U(n,e.total_in>>8&255),U(n,e.total_in>>16&255),U(n,e.total_in>>24&255)):(P(n,e.adler>>>16),P(n,65535&e.adler)),F(e),0<n.wrap&&(n.wrap=-n.wrap),0!==n.pending?m:1)},r.deflateEnd=function(e){var t;return e&&e.state?(t=e.state.status)!==C&&69!==t&&73!==t&&91!==t&&103!==t&&t!==E&&666!==t?R(e,_):(e.state=null,t===E?R(e,-3):m):_},r.deflateSetDictionary=function(e,t){var r,n,i,s,a,o,h,u,l=t.length;if(!e||!e.state)return _;if(2===(s=(r=e.state).wrap)||1===s&&r.status!==C||r.lookahead)return _;for(1===s&&(e.adler=d(e.adler,t,l,0)),r.wrap=0,l>=r.w_size&&(0===s&&(D(r.head),r.strstart=0,r.block_start=0,r.insert=0),u=new c.Buf8(r.w_size),c.arraySet(u,t,l-r.w_size,r.w_size,0),t=u,l=r.w_size),a=e.avail_in,o=e.next_in,h=e.input,e.avail_in=l,e.next_in=0,e.input=t,j(r);r.lookahead>=x;){for(n=r.strstart,i=r.lookahead-(x-1);r.ins_h=(r.ins_h<<r.hash_shift^r.window[n+x-1])&r.hash_mask,r.prev[n&r.w_mask]=r.head[r.ins_h],r.head[r.ins_h]=n,n++,--i;);r.strstart=n,r.lookahead=x-1,j(r);}return r.strstart+=r.lookahead,r.block_start=r.strstart,r.insert=r.lookahead,r.lookahead=0,r.match_length=r.prev_length=x-1,r.match_available=0,e.next_in=o,e.input=h,e.avail_in=a,r.wrap=s,m},r.deflateInfo="pako deflate (from Nodeca project)";},{"../utils/common":41,"./adler32":43,"./crc32":45,"./messages":51,"./trees":52}],47:[function(e,t,r){t.exports=function(){this.text=0,this.time=0,this.xflags=0,this.os=0,this.extra=null,this.extra_len=0,this.name="",this.comment="",this.hcrc=0,this.done=!1;};},{}],48:[function(e,t,r){t.exports=function(e,t){var r,n,i,s,a,o,h,u,l,f,c,d,p,m,_,g,b,v,y,w,k,x,S,z,C;r=e.state,n=e.next_in,z=e.input,i=n+(e.avail_in-5),s=e.next_out,C=e.output,a=s-(t-e.avail_out),o=s+(e.avail_out-257),h=r.dmax,u=r.wsize,l=r.whave,f=r.wnext,c=r.window,d=r.hold,p=r.bits,m=r.lencode,_=r.distcode,g=(1<<r.lenbits)-1,b=(1<<r.distbits)-1;e:do{p<15&&(d+=z[n++]<<p,p+=8,d+=z[n++]<<p,p+=8),v=m[d&g];t:for(;;){if(d>>>=y=v>>>24,p-=y,0===(y=v>>>16&255))C[s++]=65535&v;else {if(!(16&y)){if(0==(64&y)){v=m[(65535&v)+(d&(1<<y)-1)];continue t}if(32&y){r.mode=12;break e}e.msg="invalid literal/length code",r.mode=30;break e}w=65535&v,(y&=15)&&(p<y&&(d+=z[n++]<<p,p+=8),w+=d&(1<<y)-1,d>>>=y,p-=y),p<15&&(d+=z[n++]<<p,p+=8,d+=z[n++]<<p,p+=8),v=_[d&b];r:for(;;){if(d>>>=y=v>>>24,p-=y,!(16&(y=v>>>16&255))){if(0==(64&y)){v=_[(65535&v)+(d&(1<<y)-1)];continue r}e.msg="invalid distance code",r.mode=30;break e}if(k=65535&v,p<(y&=15)&&(d+=z[n++]<<p,(p+=8)<y&&(d+=z[n++]<<p,p+=8)),h<(k+=d&(1<<y)-1)){e.msg="invalid distance too far back",r.mode=30;break e}if(d>>>=y,p-=y,(y=s-a)<k){if(l<(y=k-y)&&r.sane){e.msg="invalid distance too far back",r.mode=30;break e}if(S=c,(x=0)===f){if(x+=u-y,y<w){for(w-=y;C[s++]=c[x++],--y;);x=s-k,S=C;}}else if(f<y){if(x+=u+f-y,(y-=f)<w){for(w-=y;C[s++]=c[x++],--y;);if(x=0,f<w){for(w-=y=f;C[s++]=c[x++],--y;);x=s-k,S=C;}}}else if(x+=f-y,y<w){for(w-=y;C[s++]=c[x++],--y;);x=s-k,S=C;}for(;2<w;)C[s++]=S[x++],C[s++]=S[x++],C[s++]=S[x++],w-=3;w&&(C[s++]=S[x++],1<w&&(C[s++]=S[x++]));}else {for(x=s-k;C[s++]=C[x++],C[s++]=C[x++],C[s++]=C[x++],2<(w-=3););w&&(C[s++]=C[x++],1<w&&(C[s++]=C[x++]));}break}}break}}while(n<i&&s<o);n-=w=p>>3,d&=(1<<(p-=w<<3))-1,e.next_in=n,e.next_out=s,e.avail_in=n<i?i-n+5:5-(n-i),e.avail_out=s<o?o-s+257:257-(s-o),r.hold=d,r.bits=p;};},{}],49:[function(e,t,r){var I=e("../utils/common"),O=e("./adler32"),B=e("./crc32"),R=e("./inffast"),T=e("./inftrees"),D=1,F=2,N=0,U=-2,P=1,n=852,i=592;function L(e){return (e>>>24&255)+(e>>>8&65280)+((65280&e)<<8)+((255&e)<<24)}function s(){this.mode=0,this.last=!1,this.wrap=0,this.havedict=!1,this.flags=0,this.dmax=0,this.check=0,this.total=0,this.head=null,this.wbits=0,this.wsize=0,this.whave=0,this.wnext=0,this.window=null,this.hold=0,this.bits=0,this.length=0,this.offset=0,this.extra=0,this.lencode=null,this.distcode=null,this.lenbits=0,this.distbits=0,this.ncode=0,this.nlen=0,this.ndist=0,this.have=0,this.next=null,this.lens=new I.Buf16(320),this.work=new I.Buf16(288),this.lendyn=null,this.distdyn=null,this.sane=0,this.back=0,this.was=0;}function a(e){var t;return e&&e.state?(t=e.state,e.total_in=e.total_out=t.total=0,e.msg="",t.wrap&&(e.adler=1&t.wrap),t.mode=P,t.last=0,t.havedict=0,t.dmax=32768,t.head=null,t.hold=0,t.bits=0,t.lencode=t.lendyn=new I.Buf32(n),t.distcode=t.distdyn=new I.Buf32(i),t.sane=1,t.back=-1,N):U}function o(e){var t;return e&&e.state?((t=e.state).wsize=0,t.whave=0,t.wnext=0,a(e)):U}function h(e,t){var r,n;return e&&e.state?(n=e.state,t<0?(r=0,t=-t):(r=1+(t>>4),t<48&&(t&=15)),t&&(t<8||15<t)?U:(null!==n.window&&n.wbits!==t&&(n.window=null),n.wrap=r,n.wbits=t,o(e))):U}function u(e,t){var r,n;return e?(n=new s,(e.state=n).window=null,(r=h(e,t))!==N&&(e.state=null),r):U}var l,f,c=!0;function j(e){if(c){var t;for(l=new I.Buf32(512),f=new I.Buf32(32),t=0;t<144;)e.lens[t++]=8;for(;t<256;)e.lens[t++]=9;for(;t<280;)e.lens[t++]=7;for(;t<288;)e.lens[t++]=8;for(T(D,e.lens,0,288,l,0,e.work,{bits:9}),t=0;t<32;)e.lens[t++]=5;T(F,e.lens,0,32,f,0,e.work,{bits:5}),c=!1;}e.lencode=l,e.lenbits=9,e.distcode=f,e.distbits=5;}function Z(e,t,r,n){var i,s=e.state;return null===s.window&&(s.wsize=1<<s.wbits,s.wnext=0,s.whave=0,s.window=new I.Buf8(s.wsize)),n>=s.wsize?(I.arraySet(s.window,t,r-s.wsize,s.wsize,0),s.wnext=0,s.whave=s.wsize):(n<(i=s.wsize-s.wnext)&&(i=n),I.arraySet(s.window,t,r-n,i,s.wnext),(n-=i)?(I.arraySet(s.window,t,r-n,n,0),s.wnext=n,s.whave=s.wsize):(s.wnext+=i,s.wnext===s.wsize&&(s.wnext=0),s.whave<s.wsize&&(s.whave+=i))),0}r.inflateReset=o,r.inflateReset2=h,r.inflateResetKeep=a,r.inflateInit=function(e){return u(e,15)},r.inflateInit2=u,r.inflate=function(e,t){var r,n,i,s,a,o,h,u,l,f,c,d,p,m,_,g,b,v,y,w,k,x,S,z,C=0,E=new I.Buf8(4),A=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15];if(!e||!e.state||!e.output||!e.input&&0!==e.avail_in)return U;12===(r=e.state).mode&&(r.mode=13),a=e.next_out,i=e.output,h=e.avail_out,s=e.next_in,n=e.input,o=e.avail_in,u=r.hold,l=r.bits,f=o,c=h,x=N;e:for(;;)switch(r.mode){case P:if(0===r.wrap){r.mode=13;break}for(;l<16;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}if(2&r.wrap&&35615===u){E[r.check=0]=255&u,E[1]=u>>>8&255,r.check=B(r.check,E,2,0),l=u=0,r.mode=2;break}if(r.flags=0,r.head&&(r.head.done=!1),!(1&r.wrap)||(((255&u)<<8)+(u>>8))%31){e.msg="incorrect header check",r.mode=30;break}if(8!=(15&u)){e.msg="unknown compression method",r.mode=30;break}if(l-=4,k=8+(15&(u>>>=4)),0===r.wbits)r.wbits=k;else if(k>r.wbits){e.msg="invalid window size",r.mode=30;break}r.dmax=1<<k,e.adler=r.check=1,r.mode=512&u?10:12,l=u=0;break;case 2:for(;l<16;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}if(r.flags=u,8!=(255&r.flags)){e.msg="unknown compression method",r.mode=30;break}if(57344&r.flags){e.msg="unknown header flags set",r.mode=30;break}r.head&&(r.head.text=u>>8&1),512&r.flags&&(E[0]=255&u,E[1]=u>>>8&255,r.check=B(r.check,E,2,0)),l=u=0,r.mode=3;case 3:for(;l<32;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}r.head&&(r.head.time=u),512&r.flags&&(E[0]=255&u,E[1]=u>>>8&255,E[2]=u>>>16&255,E[3]=u>>>24&255,r.check=B(r.check,E,4,0)),l=u=0,r.mode=4;case 4:for(;l<16;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}r.head&&(r.head.xflags=255&u,r.head.os=u>>8),512&r.flags&&(E[0]=255&u,E[1]=u>>>8&255,r.check=B(r.check,E,2,0)),l=u=0,r.mode=5;case 5:if(1024&r.flags){for(;l<16;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}r.length=u,r.head&&(r.head.extra_len=u),512&r.flags&&(E[0]=255&u,E[1]=u>>>8&255,r.check=B(r.check,E,2,0)),l=u=0;}else r.head&&(r.head.extra=null);r.mode=6;case 6:if(1024&r.flags&&(o<(d=r.length)&&(d=o),d&&(r.head&&(k=r.head.extra_len-r.length,r.head.extra||(r.head.extra=new Array(r.head.extra_len)),I.arraySet(r.head.extra,n,s,d,k)),512&r.flags&&(r.check=B(r.check,n,d,s)),o-=d,s+=d,r.length-=d),r.length))break e;r.length=0,r.mode=7;case 7:if(2048&r.flags){if(0===o)break e;for(d=0;k=n[s+d++],r.head&&k&&r.length<65536&&(r.head.name+=String.fromCharCode(k)),k&&d<o;);if(512&r.flags&&(r.check=B(r.check,n,d,s)),o-=d,s+=d,k)break e}else r.head&&(r.head.name=null);r.length=0,r.mode=8;case 8:if(4096&r.flags){if(0===o)break e;for(d=0;k=n[s+d++],r.head&&k&&r.length<65536&&(r.head.comment+=String.fromCharCode(k)),k&&d<o;);if(512&r.flags&&(r.check=B(r.check,n,d,s)),o-=d,s+=d,k)break e}else r.head&&(r.head.comment=null);r.mode=9;case 9:if(512&r.flags){for(;l<16;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}if(u!==(65535&r.check)){e.msg="header crc mismatch",r.mode=30;break}l=u=0;}r.head&&(r.head.hcrc=r.flags>>9&1,r.head.done=!0),e.adler=r.check=0,r.mode=12;break;case 10:for(;l<32;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}e.adler=r.check=L(u),l=u=0,r.mode=11;case 11:if(0===r.havedict)return e.next_out=a,e.avail_out=h,e.next_in=s,e.avail_in=o,r.hold=u,r.bits=l,2;e.adler=r.check=1,r.mode=12;case 12:if(5===t||6===t)break e;case 13:if(r.last){u>>>=7&l,l-=7&l,r.mode=27;break}for(;l<3;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}switch(r.last=1&u,l-=1,3&(u>>>=1)){case 0:r.mode=14;break;case 1:if(j(r),r.mode=20,6!==t)break;u>>>=2,l-=2;break e;case 2:r.mode=17;break;case 3:e.msg="invalid block type",r.mode=30;}u>>>=2,l-=2;break;case 14:for(u>>>=7&l,l-=7&l;l<32;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}if((65535&u)!=(u>>>16^65535)){e.msg="invalid stored block lengths",r.mode=30;break}if(r.length=65535&u,l=u=0,r.mode=15,6===t)break e;case 15:r.mode=16;case 16:if(d=r.length){if(o<d&&(d=o),h<d&&(d=h),0===d)break e;I.arraySet(i,n,s,d,a),o-=d,s+=d,h-=d,a+=d,r.length-=d;break}r.mode=12;break;case 17:for(;l<14;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}if(r.nlen=257+(31&u),u>>>=5,l-=5,r.ndist=1+(31&u),u>>>=5,l-=5,r.ncode=4+(15&u),u>>>=4,l-=4,286<r.nlen||30<r.ndist){e.msg="too many length or distance symbols",r.mode=30;break}r.have=0,r.mode=18;case 18:for(;r.have<r.ncode;){for(;l<3;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}r.lens[A[r.have++]]=7&u,u>>>=3,l-=3;}for(;r.have<19;)r.lens[A[r.have++]]=0;if(r.lencode=r.lendyn,r.lenbits=7,S={bits:r.lenbits},x=T(0,r.lens,0,19,r.lencode,0,r.work,S),r.lenbits=S.bits,x){e.msg="invalid code lengths set",r.mode=30;break}r.have=0,r.mode=19;case 19:for(;r.have<r.nlen+r.ndist;){for(;g=(C=r.lencode[u&(1<<r.lenbits)-1])>>>16&255,b=65535&C,!((_=C>>>24)<=l);){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}if(b<16)u>>>=_,l-=_,r.lens[r.have++]=b;else {if(16===b){for(z=_+2;l<z;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}if(u>>>=_,l-=_,0===r.have){e.msg="invalid bit length repeat",r.mode=30;break}k=r.lens[r.have-1],d=3+(3&u),u>>>=2,l-=2;}else if(17===b){for(z=_+3;l<z;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}l-=_,k=0,d=3+(7&(u>>>=_)),u>>>=3,l-=3;}else {for(z=_+7;l<z;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}l-=_,k=0,d=11+(127&(u>>>=_)),u>>>=7,l-=7;}if(r.have+d>r.nlen+r.ndist){e.msg="invalid bit length repeat",r.mode=30;break}for(;d--;)r.lens[r.have++]=k;}}if(30===r.mode)break;if(0===r.lens[256]){e.msg="invalid code -- missing end-of-block",r.mode=30;break}if(r.lenbits=9,S={bits:r.lenbits},x=T(D,r.lens,0,r.nlen,r.lencode,0,r.work,S),r.lenbits=S.bits,x){e.msg="invalid literal/lengths set",r.mode=30;break}if(r.distbits=6,r.distcode=r.distdyn,S={bits:r.distbits},x=T(F,r.lens,r.nlen,r.ndist,r.distcode,0,r.work,S),r.distbits=S.bits,x){e.msg="invalid distances set",r.mode=30;break}if(r.mode=20,6===t)break e;case 20:r.mode=21;case 21:if(6<=o&&258<=h){e.next_out=a,e.avail_out=h,e.next_in=s,e.avail_in=o,r.hold=u,r.bits=l,R(e,c),a=e.next_out,i=e.output,h=e.avail_out,s=e.next_in,n=e.input,o=e.avail_in,u=r.hold,l=r.bits,12===r.mode&&(r.back=-1);break}for(r.back=0;g=(C=r.lencode[u&(1<<r.lenbits)-1])>>>16&255,b=65535&C,!((_=C>>>24)<=l);){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}if(g&&0==(240&g)){for(v=_,y=g,w=b;g=(C=r.lencode[w+((u&(1<<v+y)-1)>>v)])>>>16&255,b=65535&C,!(v+(_=C>>>24)<=l);){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}u>>>=v,l-=v,r.back+=v;}if(u>>>=_,l-=_,r.back+=_,r.length=b,0===g){r.mode=26;break}if(32&g){r.back=-1,r.mode=12;break}if(64&g){e.msg="invalid literal/length code",r.mode=30;break}r.extra=15&g,r.mode=22;case 22:if(r.extra){for(z=r.extra;l<z;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}r.length+=u&(1<<r.extra)-1,u>>>=r.extra,l-=r.extra,r.back+=r.extra;}r.was=r.length,r.mode=23;case 23:for(;g=(C=r.distcode[u&(1<<r.distbits)-1])>>>16&255,b=65535&C,!((_=C>>>24)<=l);){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}if(0==(240&g)){for(v=_,y=g,w=b;g=(C=r.distcode[w+((u&(1<<v+y)-1)>>v)])>>>16&255,b=65535&C,!(v+(_=C>>>24)<=l);){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}u>>>=v,l-=v,r.back+=v;}if(u>>>=_,l-=_,r.back+=_,64&g){e.msg="invalid distance code",r.mode=30;break}r.offset=b,r.extra=15&g,r.mode=24;case 24:if(r.extra){for(z=r.extra;l<z;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}r.offset+=u&(1<<r.extra)-1,u>>>=r.extra,l-=r.extra,r.back+=r.extra;}if(r.offset>r.dmax){e.msg="invalid distance too far back",r.mode=30;break}r.mode=25;case 25:if(0===h)break e;if(d=c-h,r.offset>d){if((d=r.offset-d)>r.whave&&r.sane){e.msg="invalid distance too far back",r.mode=30;break}p=d>r.wnext?(d-=r.wnext,r.wsize-d):r.wnext-d,d>r.length&&(d=r.length),m=r.window;}else m=i,p=a-r.offset,d=r.length;for(h<d&&(d=h),h-=d,r.length-=d;i[a++]=m[p++],--d;);0===r.length&&(r.mode=21);break;case 26:if(0===h)break e;i[a++]=r.length,h--,r.mode=21;break;case 27:if(r.wrap){for(;l<32;){if(0===o)break e;o--,u|=n[s++]<<l,l+=8;}if(c-=h,e.total_out+=c,r.total+=c,c&&(e.adler=r.check=r.flags?B(r.check,i,c,a-c):O(r.check,i,c,a-c)),c=h,(r.flags?u:L(u))!==r.check){e.msg="incorrect data check",r.mode=30;break}l=u=0;}r.mode=28;case 28:if(r.wrap&&r.flags){for(;l<32;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}if(u!==(4294967295&r.total)){e.msg="incorrect length check",r.mode=30;break}l=u=0;}r.mode=29;case 29:x=1;break e;case 30:x=-3;break e;case 31:return -4;case 32:default:return U}return e.next_out=a,e.avail_out=h,e.next_in=s,e.avail_in=o,r.hold=u,r.bits=l,(r.wsize||c!==e.avail_out&&r.mode<30&&(r.mode<27||4!==t))&&Z(e,e.output,e.next_out,c-e.avail_out)?(r.mode=31,-4):(f-=e.avail_in,c-=e.avail_out,e.total_in+=f,e.total_out+=c,r.total+=c,r.wrap&&c&&(e.adler=r.check=r.flags?B(r.check,i,c,e.next_out-c):O(r.check,i,c,e.next_out-c)),e.data_type=r.bits+(r.last?64:0)+(12===r.mode?128:0)+(20===r.mode||15===r.mode?256:0),(0==f&&0===c||4===t)&&x===N&&(x=-5),x)},r.inflateEnd=function(e){if(!e||!e.state)return U;var t=e.state;return t.window&&(t.window=null),e.state=null,N},r.inflateGetHeader=function(e,t){var r;return e&&e.state?0==(2&(r=e.state).wrap)?U:((r.head=t).done=!1,N):U},r.inflateSetDictionary=function(e,t){var r,n=t.length;return e&&e.state?0!==(r=e.state).wrap&&11!==r.mode?U:11===r.mode&&O(1,t,n,0)!==r.check?-3:Z(e,t,n,n)?(r.mode=31,-4):(r.havedict=1,N):U},r.inflateInfo="pako inflate (from Nodeca project)";},{"../utils/common":41,"./adler32":43,"./crc32":45,"./inffast":48,"./inftrees":50}],50:[function(e,t,r){var D=e("../utils/common"),F=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0],N=[16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78],U=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0],P=[16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64];t.exports=function(e,t,r,n,i,s,a,o){var h,u,l,f,c,d,p,m,_,g=o.bits,b=0,v=0,y=0,w=0,k=0,x=0,S=0,z=0,C=0,E=0,A=null,I=0,O=new D.Buf16(16),B=new D.Buf16(16),R=null,T=0;for(b=0;b<=15;b++)O[b]=0;for(v=0;v<n;v++)O[t[r+v]]++;for(k=g,w=15;1<=w&&0===O[w];w--);if(w<k&&(k=w),0===w)return i[s++]=20971520,i[s++]=20971520,o.bits=1,0;for(y=1;y<w&&0===O[y];y++);for(k<y&&(k=y),b=z=1;b<=15;b++)if(z<<=1,(z-=O[b])<0)return -1;if(0<z&&(0===e||1!==w))return -1;for(B[1]=0,b=1;b<15;b++)B[b+1]=B[b]+O[b];for(v=0;v<n;v++)0!==t[r+v]&&(a[B[t[r+v]]++]=v);if(d=0===e?(A=R=a,19):1===e?(A=F,I-=257,R=N,T-=257,256):(A=U,R=P,-1),b=y,c=s,S=v=E=0,l=-1,f=(C=1<<(x=k))-1,1===e&&852<C||2===e&&592<C)return 1;for(;;){for(p=b-S,_=a[v]<d?(m=0,a[v]):a[v]>d?(m=R[T+a[v]],A[I+a[v]]):(m=96,0),h=1<<b-S,y=u=1<<x;i[c+(E>>S)+(u-=h)]=p<<24|m<<16|_|0,0!==u;);for(h=1<<b-1;E&h;)h>>=1;if(0!==h?(E&=h-1,E+=h):E=0,v++,0==--O[b]){if(b===w)break;b=t[r+a[v]];}if(k<b&&(E&f)!==l){for(0===S&&(S=k),c+=y,z=1<<(x=b-S);x+S<w&&!((z-=O[x+S])<=0);)x++,z<<=1;if(C+=1<<x,1===e&&852<C||2===e&&592<C)return 1;i[l=E&f]=k<<24|x<<16|c-s|0;}}return 0!==E&&(i[c+E]=b-S<<24|64<<16|0),o.bits=k,0};},{"../utils/common":41}],51:[function(e,t,r){t.exports={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"};},{}],52:[function(e,t,r){var i=e("../utils/common"),o=0,h=1;function n(e){for(var t=e.length;0<=--t;)e[t]=0;}var s=0,a=29,u=256,l=u+1+a,f=30,c=19,_=2*l+1,g=15,d=16,p=7,m=256,b=16,v=17,y=18,w=[0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0],k=[0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13],x=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7],S=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],z=new Array(2*(l+2));n(z);var C=new Array(2*f);n(C);var E=new Array(512);n(E);var A=new Array(256);n(A);var I=new Array(a);n(I);var O,B,R,T=new Array(f);function D(e,t,r,n,i){this.static_tree=e,this.extra_bits=t,this.extra_base=r,this.elems=n,this.max_length=i,this.has_stree=e&&e.length;}function F(e,t){this.dyn_tree=e,this.max_code=0,this.stat_desc=t;}function N(e){return e<256?E[e]:E[256+(e>>>7)]}function U(e,t){e.pending_buf[e.pending++]=255&t,e.pending_buf[e.pending++]=t>>>8&255;}function P(e,t,r){e.bi_valid>d-r?(e.bi_buf|=t<<e.bi_valid&65535,U(e,e.bi_buf),e.bi_buf=t>>d-e.bi_valid,e.bi_valid+=r-d):(e.bi_buf|=t<<e.bi_valid&65535,e.bi_valid+=r);}function L(e,t,r){P(e,r[2*t],r[2*t+1]);}function j(e,t){for(var r=0;r|=1&e,e>>>=1,r<<=1,0<--t;);return r>>>1}function Z(e,t,r){var n,i,s=new Array(g+1),a=0;for(n=1;n<=g;n++)s[n]=a=a+r[n-1]<<1;for(i=0;i<=t;i++){var o=e[2*i+1];0!==o&&(e[2*i]=j(s[o]++,o));}}function W(e){var t;for(t=0;t<l;t++)e.dyn_ltree[2*t]=0;for(t=0;t<f;t++)e.dyn_dtree[2*t]=0;for(t=0;t<c;t++)e.bl_tree[2*t]=0;e.dyn_ltree[2*m]=1,e.opt_len=e.static_len=0,e.last_lit=e.matches=0;}function M(e){8<e.bi_valid?U(e,e.bi_buf):0<e.bi_valid&&(e.pending_buf[e.pending++]=e.bi_buf),e.bi_buf=0,e.bi_valid=0;}function H(e,t,r,n){var i=2*t,s=2*r;return e[i]<e[s]||e[i]===e[s]&&n[t]<=n[r]}function G(e,t,r){for(var n=e.heap[r],i=r<<1;i<=e.heap_len&&(i<e.heap_len&&H(t,e.heap[i+1],e.heap[i],e.depth)&&i++,!H(t,n,e.heap[i],e.depth));)e.heap[r]=e.heap[i],r=i,i<<=1;e.heap[r]=n;}function K(e,t,r){var n,i,s,a,o=0;if(0!==e.last_lit)for(;n=e.pending_buf[e.d_buf+2*o]<<8|e.pending_buf[e.d_buf+2*o+1],i=e.pending_buf[e.l_buf+o],o++,0===n?L(e,i,t):(L(e,(s=A[i])+u+1,t),0!==(a=w[s])&&P(e,i-=I[s],a),L(e,s=N(--n),r),0!==(a=k[s])&&P(e,n-=T[s],a)),o<e.last_lit;);L(e,m,t);}function Y(e,t){var r,n,i,s=t.dyn_tree,a=t.stat_desc.static_tree,o=t.stat_desc.has_stree,h=t.stat_desc.elems,u=-1;for(e.heap_len=0,e.heap_max=_,r=0;r<h;r++)0!==s[2*r]?(e.heap[++e.heap_len]=u=r,e.depth[r]=0):s[2*r+1]=0;for(;e.heap_len<2;)s[2*(i=e.heap[++e.heap_len]=u<2?++u:0)]=1,e.depth[i]=0,e.opt_len--,o&&(e.static_len-=a[2*i+1]);for(t.max_code=u,r=e.heap_len>>1;1<=r;r--)G(e,s,r);for(i=h;r=e.heap[1],e.heap[1]=e.heap[e.heap_len--],G(e,s,1),n=e.heap[1],e.heap[--e.heap_max]=r,e.heap[--e.heap_max]=n,s[2*i]=s[2*r]+s[2*n],e.depth[i]=(e.depth[r]>=e.depth[n]?e.depth[r]:e.depth[n])+1,s[2*r+1]=s[2*n+1]=i,e.heap[1]=i++,G(e,s,1),2<=e.heap_len;);e.heap[--e.heap_max]=e.heap[1],function(e,t){var r,n,i,s,a,o,h=t.dyn_tree,u=t.max_code,l=t.stat_desc.static_tree,f=t.stat_desc.has_stree,c=t.stat_desc.extra_bits,d=t.stat_desc.extra_base,p=t.stat_desc.max_length,m=0;for(s=0;s<=g;s++)e.bl_count[s]=0;for(h[2*e.heap[e.heap_max]+1]=0,r=e.heap_max+1;r<_;r++)p<(s=h[2*h[2*(n=e.heap[r])+1]+1]+1)&&(s=p,m++),h[2*n+1]=s,u<n||(e.bl_count[s]++,a=0,d<=n&&(a=c[n-d]),o=h[2*n],e.opt_len+=o*(s+a),f&&(e.static_len+=o*(l[2*n+1]+a)));if(0!==m){do{for(s=p-1;0===e.bl_count[s];)s--;e.bl_count[s]--,e.bl_count[s+1]+=2,e.bl_count[p]--,m-=2;}while(0<m);for(s=p;0!==s;s--)for(n=e.bl_count[s];0!==n;)u<(i=e.heap[--r])||(h[2*i+1]!==s&&(e.opt_len+=(s-h[2*i+1])*h[2*i],h[2*i+1]=s),n--);}}(e,t),Z(s,u,e.bl_count);}function X(e,t,r){var n,i,s=-1,a=t[1],o=0,h=7,u=4;for(0===a&&(h=138,u=3),t[2*(r+1)+1]=65535,n=0;n<=r;n++)i=a,a=t[2*(n+1)+1],++o<h&&i===a||(o<u?e.bl_tree[2*i]+=o:0!==i?(i!==s&&e.bl_tree[2*i]++,e.bl_tree[2*b]++):o<=10?e.bl_tree[2*v]++:e.bl_tree[2*y]++,s=i,u=(o=0)===a?(h=138,3):i===a?(h=6,3):(h=7,4));}function V(e,t,r){var n,i,s=-1,a=t[1],o=0,h=7,u=4;for(0===a&&(h=138,u=3),n=0;n<=r;n++)if(i=a,a=t[2*(n+1)+1],!(++o<h&&i===a)){if(o<u)for(;L(e,i,e.bl_tree),0!=--o;);else 0!==i?(i!==s&&(L(e,i,e.bl_tree),o--),L(e,b,e.bl_tree),P(e,o-3,2)):o<=10?(L(e,v,e.bl_tree),P(e,o-3,3)):(L(e,y,e.bl_tree),P(e,o-11,7));s=i,u=(o=0)===a?(h=138,3):i===a?(h=6,3):(h=7,4);}}n(T);var q=!1;function J(e,t,r,n){P(e,(s<<1)+(n?1:0),3),function(e,t,r,n){M(e),n&&(U(e,r),U(e,~r)),i.arraySet(e.pending_buf,e.window,t,r,e.pending),e.pending+=r;}(e,t,r,!0);}r._tr_init=function(e){q||(function(){var e,t,r,n,i,s=new Array(g+1);for(n=r=0;n<a-1;n++)for(I[n]=r,e=0;e<1<<w[n];e++)A[r++]=n;for(A[r-1]=n,n=i=0;n<16;n++)for(T[n]=i,e=0;e<1<<k[n];e++)E[i++]=n;for(i>>=7;n<f;n++)for(T[n]=i<<7,e=0;e<1<<k[n]-7;e++)E[256+i++]=n;for(t=0;t<=g;t++)s[t]=0;for(e=0;e<=143;)z[2*e+1]=8,e++,s[8]++;for(;e<=255;)z[2*e+1]=9,e++,s[9]++;for(;e<=279;)z[2*e+1]=7,e++,s[7]++;for(;e<=287;)z[2*e+1]=8,e++,s[8]++;for(Z(z,l+1,s),e=0;e<f;e++)C[2*e+1]=5,C[2*e]=j(e,5);O=new D(z,w,u+1,l,g),B=new D(C,k,0,f,g),R=new D(new Array(0),x,0,c,p);}(),q=!0),e.l_desc=new F(e.dyn_ltree,O),e.d_desc=new F(e.dyn_dtree,B),e.bl_desc=new F(e.bl_tree,R),e.bi_buf=0,e.bi_valid=0,W(e);},r._tr_stored_block=J,r._tr_flush_block=function(e,t,r,n){var i,s,a=0;0<e.level?(2===e.strm.data_type&&(e.strm.data_type=function(e){var t,r=4093624447;for(t=0;t<=31;t++,r>>>=1)if(1&r&&0!==e.dyn_ltree[2*t])return o;if(0!==e.dyn_ltree[18]||0!==e.dyn_ltree[20]||0!==e.dyn_ltree[26])return h;for(t=32;t<u;t++)if(0!==e.dyn_ltree[2*t])return h;return o}(e)),Y(e,e.l_desc),Y(e,e.d_desc),a=function(e){var t;for(X(e,e.dyn_ltree,e.l_desc.max_code),X(e,e.dyn_dtree,e.d_desc.max_code),Y(e,e.bl_desc),t=c-1;3<=t&&0===e.bl_tree[2*S[t]+1];t--);return e.opt_len+=3*(t+1)+5+5+4,t}(e),i=e.opt_len+3+7>>>3,(s=e.static_len+3+7>>>3)<=i&&(i=s)):i=s=r+5,r+4<=i&&-1!==t?J(e,t,r,n):4===e.strategy||s===i?(P(e,2+(n?1:0),3),K(e,z,C)):(P(e,4+(n?1:0),3),function(e,t,r,n){var i;for(P(e,t-257,5),P(e,r-1,5),P(e,n-4,4),i=0;i<n;i++)P(e,e.bl_tree[2*S[i]+1],3);V(e,e.dyn_ltree,t-1),V(e,e.dyn_dtree,r-1);}(e,e.l_desc.max_code+1,e.d_desc.max_code+1,a+1),K(e,e.dyn_ltree,e.dyn_dtree)),W(e),n&&M(e);},r._tr_tally=function(e,t,r){return e.pending_buf[e.d_buf+2*e.last_lit]=t>>>8&255,e.pending_buf[e.d_buf+2*e.last_lit+1]=255&t,e.pending_buf[e.l_buf+e.last_lit]=255&r,e.last_lit++,0===t?e.dyn_ltree[2*r]++:(e.matches++,t--,e.dyn_ltree[2*(A[r]+u+1)]++,e.dyn_dtree[2*N(t)]++),e.last_lit===e.lit_bufsize-1},r._tr_align=function(e){P(e,2,3),L(e,m,z),function(e){16===e.bi_valid?(U(e,e.bi_buf),e.bi_buf=0,e.bi_valid=0):8<=e.bi_valid&&(e.pending_buf[e.pending++]=255&e.bi_buf,e.bi_buf>>=8,e.bi_valid-=8);}(e);};},{"../utils/common":41}],53:[function(e,t,r){t.exports=function(){this.input=null,this.next_in=0,this.avail_in=0,this.total_in=0,this.output=null,this.next_out=0,this.avail_out=0,this.total_out=0,this.msg="",this.state=null,this.data_type=2,this.adler=0;};},{}],54:[function(e,t,r){(function(e){!function(r,n){if(!r.setImmediate){var i,s,t,a,o=1,h={},u=!1,l=r.document,e=Object.getPrototypeOf&&Object.getPrototypeOf(r);e=e&&e.setTimeout?e:r,i="[object process]"==={}.toString.call(r.process)?function(e){browser$1.nextTick(function(){c(e);});}:function(){if(r.postMessage&&!r.importScripts){var e=!0,t=r.onmessage;return r.onmessage=function(){e=!1;},r.postMessage("","*"),r.onmessage=t,e}}()?(a="setImmediate$"+Math.random()+"$",r.addEventListener?r.addEventListener("message",d,!1):r.attachEvent("onmessage",d),function(e){r.postMessage(a+e,"*");}):r.MessageChannel?((t=new MessageChannel).port1.onmessage=function(e){c(e.data);},function(e){t.port2.postMessage(e);}):l&&"onreadystatechange"in l.createElement("script")?(s=l.documentElement,function(e){var t=l.createElement("script");t.onreadystatechange=function(){c(e),t.onreadystatechange=null,s.removeChild(t),t=null;},s.appendChild(t);}):function(e){setTimeout(c,0,e);},e.setImmediate=function(e){"function"!=typeof e&&(e=new Function(""+e));for(var t=new Array(arguments.length-1),r=0;r<t.length;r++)t[r]=arguments[r+1];var n={callback:e,args:t};return h[o]=n,i(o),o++},e.clearImmediate=f;}function f(e){delete h[e];}function c(e){if(u)setTimeout(c,0,e);else {var t=h[e];if(t){u=!0;try{!function(e){var t=e.callback,r=e.args;switch(r.length){case 0:t();break;case 1:t(r[0]);break;case 2:t(r[0],r[1]);break;case 3:t(r[0],r[1],r[2]);break;default:t.apply(n,r);}}(t);}finally{f(e),u=!1;}}}}function d(e){e.source===r&&"string"==typeof e.data&&0===e.data.indexOf(a)&&c(+e.data.slice(a.length));}}("undefined"==typeof self?void 0===e?this:e:self);}).call(this,"undefined"!=typeof commonjsGlobal?commonjsGlobal:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{});},{}]},{},[10])(10)});
} (jszip_min));
var jszip_minExports = jszip_min.exports;
var JSZip = /*@__PURE__*/getDefaultExportFromCjs(jszip_minExports);
var unzip = async (buffer) => {
const zip = new JSZip();
await zip.loadAsync(buffer);
const files = zip.file(/.+/);
const out = {};
await Promise.all(files.map(async (a) => {
let result;
if (a.name.slice(-3).toLowerCase() === 'shp' || a.name.slice(-3).toLowerCase() === 'dbf') {
result = await a.async('nodebuffer');
} else {
result = await a.async('text');
}
out[a.name] = result;
}));
return out;
};
const URL$1 = globalThis.URL;
var combine$1 = (base, type) => {
if (!type) {
return base;
}
const url = new URL$1(base);
url.pathname = `${url.pathname}.${type}`;
return url.href;
};
function binaryAjax$1(_url, type) {
return new Promise(function (resolve, reject) {
const url = combine$1(_url, type);
const ajax = new XMLHttpRequest();
ajax.open('GET', url, true);
if (type !== 'prj' && type !== 'cpg') {
ajax.responseType = 'arraybuffer';
}
ajax.addEventListener('load', function () {
if (ajax.status > 399) {
if (type === 'prj' || type === 'cpg') {
return resolve(false);
} else {
return reject(new Error(ajax.status));
}
}
if (type !== 'prj' && type !== 'cpg') {
return resolve(Buffer.from(ajax.response));
} else {
return resolve(ajax.response);
}
}, false);
ajax.send();
});
}
async function binaryAjax(_url, type) {
if (!globalThis.fetch) {
return binaryAjax$1(_url, type);
}
const url = combine$1(_url, type);
const isOptionalTxt = type === 'prj' || type === 'cpg';
try {
const resp = await fetch(url);
if (resp.status > 399) {
throw new Error(resp.statusText);
}
if (isOptionalTxt) {
return resp.text();
}
const parsed = await resp.arrayBuffer();
return Buffer.from(parsed);
} catch (e) {
console.log('ERROR', e, type);
if (isOptionalTxt || type === 'dbf') {
return false;
}
throw e;
}
}
function isClockWise(array) {
let sum = 0;
let i = 1;
const len = array.length;
let prev, cur;
const bbox = [array[0][0], array[0][1], array[0][0], array[0][1]];
while (i < len) {
prev = cur || array[0];
cur = array[i];
sum += ((cur[0] - prev[0]) * (cur[1] + prev[1]));
i++;
if (cur[0] < bbox[0]) {
bbox[0] = cur[0];
}
if (cur[1] < bbox[1]) {
bbox[1] = cur[1];
}
if (cur[0] > bbox[2]) {
bbox[2] = cur[0];
}
if (cur[1] > bbox[3]) {
bbox[3] = cur[1];
}
}
return {
ring: array,
clockWise: sum > 0,
bbox,
children: []
}
}
function contains(outer, inner) {
if (outer.bbox[0] > inner.bbox[0]) {
return false;
}
if (outer.bbox[1] > inner.bbox[1]) {
return false;
}
if (outer.bbox[2] < inner.bbox[2]) {
return false;
}
if (outer.bbox[3] < inner.bbox[3]) {
return false;
}
return true;
}
function handleRings(rings) {
const outers = [];
const inners = [];
for (const ring of rings) {
const proccessed = isClockWise(ring);
if (proccessed.clockWise) {
outers.push(proccessed);
} else {
inners.push(proccessed);
}
}
// this is an optimization,
// but it would also put in weird bad rings that would otherwise get left out
// if (outers.length === 1) {
// const out = [outers[0].ring]
// for (const inner of inners) {
// out.push(inner.ring);
// }
// return [out];
// }
for (const inner of inners) {
for (const outer of outers) {
if (contains(outer, inner)) {
outer.children.push(inner.ring);
break;
}
}
}
const out = [];
for (const outer of outers) {
out.push([outer.ring].concat(outer.children));
}
return out;
}
ParseShp.prototype.parsePoint = function (data) {
return {
type: 'Point',
coordinates: this.parseCoord(data, 0)
};
};
ParseShp.prototype.parseZPoint = function (data) {
const pointXY = this.parsePoint(data);
pointXY.coordinates.push(data.readDoubleLE(16));
return pointXY;
};
ParseShp.prototype.parsePointArray = function (data, offset, num) {
const out = [];
let done = 0;
while (done < num) {
out.push(this.parseCoord(data, offset));
offset += 16;
done++;
}
return out;
};
ParseShp.prototype.parseZPointArray = function (data, zOffset, num, coordinates) {
let i = 0;
while (i < num) {
coordinates[i].push(data.readDoubleLE(zOffset));
i++;
zOffset += 8;
}
return coordinates;
};
ParseShp.prototype.parseArrayGroup = function (data, offset, partOffset, num, tot) {
const out = [];
let done = 0;
let curNum; let nextNum = 0;
let pointNumber;
while (done < num) {
done++;
partOffset += 4;
curNum = nextNum;
if (done === num) {
nextNum = tot;
} else {
nextNum = data.readInt32LE(partOffset);
}
pointNumber = nextNum - curNum;
if (!pointNumber) {
continue;
}
out.push(this.parsePointArray(data, offset, pointNumber));
offset += (pointNumber << 4);
}
return out;
};
ParseShp.prototype.parseZArrayGroup = function (data, zOffset, num, coordinates) {
let i = 0;
while (i < num) {
coordinates[i] = this.parseZPointArray(data, zOffset, coordinates[i].length, coordinates[i]);
zOffset += (coordinates[i].length << 3);
i++;
}
return coordinates;
};
ParseShp.prototype.parseMultiPoint = function (data) {
const out = {};
const num = data.readInt32LE(32, true);
if (!num) {
return null;
}
const mins = this.parseCoord(data, 0);
const maxs = this.parseCoord(data, 16);
out.bbox = [
mins[0],
mins[1],
maxs[0],
maxs[1]
];
const offset = 36;
if (num === 1) {
out.type = 'Point';
out.coordinates = this.parseCoord(data, offset);
} else {
out.type = 'MultiPoint';
out.coordinates = this.parsePointArray(data, offset, num);
}
return out;
};
ParseShp.prototype.parseZMultiPoint = function (data) {
const geoJson = this.parseMultiPoint(data);
if (!geoJson) {
return null;
}
let num;
if (geoJson.type === 'Point') {
geoJson.coordinates.push(data.readDoubleLE(72));
return geoJson;
} else {
num = geoJson.coordinates.length;
}
const zOffset = 52 + (num << 4);
geoJson.coordinates = this.parseZPointArray(data, zOffset, num, geoJson.coordinates);
return geoJson;
};
ParseShp.prototype.parsePolyline = function (data) {
const out = {};
const numParts = data.readInt32LE(32);
if (!numParts) {
return null;
}
const mins = this.parseCoord(data, 0);
const maxs = this.parseCoord(data, 16);
out.bbox = [
mins[0],
mins[1],
maxs[0],
maxs[1]
];
const num = data.readInt32LE(36);
let offset, partOffset;
if (numParts === 1) {
out.type = 'LineString';
offset = 44;
out.coordinates = this.parsePointArray(data, offset, num);
} else {
out.type = 'MultiLineString';
offset = 40 + (numParts << 2);
partOffset = 40;
out.coordinates = this.parseArrayGroup(data, offset, partOffset, numParts, num);
}
return out;
};
ParseShp.prototype.parseZPolyline = function (data) {
const geoJson = this.parsePolyline(data);
if (!geoJson) {
return null;
}
const num = geoJson.coordinates.length;
let zOffset;
if (geoJson.type === 'LineString') {
zOffset = 60 + (num << 4);
geoJson.coordinates = this.parseZPointArray(data, zOffset, num, geoJson.coordinates);
return geoJson;
} else {
const totalPoints = geoJson.coordinates.reduce(function (a, v) {
return a + v.length;
}, 0);
zOffset = 56 + (totalPoints << 4) + (num << 2);
geoJson.coordinates = this.parseZArrayGroup(data, zOffset, num, geoJson.coordinates);
return geoJson;
}
};
ParseShp.prototype.polyFuncs = function (out) {
if (!out) {
return out;
}
if (out.type === 'LineString') {
out.type = 'Polygon';
out.coordinates = [out.coordinates];
return out;
} else {
out.coordinates = handleRings(out.coordinates);
if (out.coordinates.length === 1) {
out.type = 'Polygon';
out.coordinates = out.coordinates[0];
return out;
} else {
out.type = 'MultiPolygon';
return out;
}
}
};
ParseShp.prototype.parsePolygon = function (data) {
return this.polyFuncs(this.parsePolyline(data));
};
ParseShp.prototype.parseZPolygon = function (data) {
return this.polyFuncs(this.parseZPolyline(data));
};
const shpFuncObj = {
1: 'parsePoint',
3: 'parsePolyline',
5: 'parsePolygon',
8: 'parseMultiPoint',
11: 'parseZPoint',
13: 'parseZPolyline',
15: 'parseZPolygon',
18: 'parseZMultiPoint'
};
function makeParseCoord(trans) {
if (trans) {
return function (data, offset) {
const args = [data.readDoubleLE(offset), data.readDoubleLE(offset + 8)];
return trans.inverse(args);
};
} else {
return function (data, offset) {
return [data.readDoubleLE(offset), data.readDoubleLE(offset + 8)];
};
}
}
function ParseShp(buffer, trans) {
if (!(this instanceof ParseShp)) {
return new ParseShp(buffer, trans);
}
this.buffer = buffer;
this.headers = this.parseHeader();
this.shpFuncs(trans);
this.rows = this.getRows();
}
ParseShp.prototype.shpFuncs = function (tran) {
let num = this.headers.shpCode;
if (num > 20) {
num -= 20;
}
if (!(num in shpFuncObj)) {
throw new Error('I don\'t know that shp type');
}
this.parseFunc = this[shpFuncObj[num]];
this.parseCoord = makeParseCoord(tran);
};
ParseShp.prototype.getShpCode = function () {
return this.parseHeader().shpCode;
};
ParseShp.prototype.parseHeader = function () {
const view = this.buffer.subarray(0, 100);
return {
length: view.readInt32BE(6 << 2) << 1,
version: view.readInt32LE(7 << 2),
shpCode: view.readInt32LE(8 << 2),
bbox: [
view.readDoubleLE(9 << 2),
view.readDoubleLE(11 << 2),
view.readDoubleLE(13 << 2),
view.readDoubleLE(15 << 2)
]
};
};
ParseShp.prototype.getRows = function () {
let offset = 100;
const olen = this.buffer.byteLength;
const len = olen - 8;
const out = [];
let current;
while (offset <= len) {
current = this.getRow(offset, olen);
if (!current) {
break;
}
offset += 8;
offset += current.len;
if (current.type) {
out.push(this.parseFunc(current.data));
} else {
out.push(null);
}
}
return out;
};
ParseShp.prototype.getRow = function (offset, bufLen) {
const view = this.buffer.subarray(offset, offset + 12);
const len = view.readInt32BE(4) << 1;
const id = view.readInt32BE(0);
if (len === 0) {
return {
id: id,
len: len,
type: 0
};
}
if (offset + len + 8 > bufLen) {
return;
}
return {
id: id,
len: len,
data: this.buffer.subarray(offset + 12, offset + len + 8),
type: view.readInt32LE(8)
};
};
function parseShp (buffer, trans) {
return new ParseShp(buffer, trans).rows;
}
var encoding = {exports: {}};
(function (module) {
// This is free and unencumbered software released into the public domain.
// See LICENSE.md for more information.
/**
* @fileoverview Global |this| required for resolving indexes in node.
* @suppress {globalThis}
*/
(function(global) {
// If we're in node require encoding-indexes and attach it to the global.
if (module.exports &&
!global["encoding-indexes"]) ;
//
// Utilities
//
/**
* @param {number} a The number to test.
* @param {number} min The minimum value in the range, inclusive.
* @param {number} max The maximum value in the range, inclusive.
* @return {boolean} True if a >= min and a <= max.
*/
function inRange(a, min, max) {
return min <= a && a <= max;
}
/**
* @param {!Array.<*>} array The array to check.
* @param {*} item The item to look for in the array.
* @return {boolean} True if the item appears in the array.
*/
function includes(array, item) {
return array.indexOf(item) !== -1;
}
var floor = Math.floor;
/**
* @param {*} o
* @return {Object}
*/
function ToDictionary(o) {
if (o === undefined) return {};
if (o === Object(o)) return o;
throw TypeError('Could not convert argument to dictionary');
}
/**
* @param {string} string Input string of UTF-16 code units.
* @return {!Array.<number>} Code points.
*/
function stringToCodePoints(string) {
// https://heycam.github.io/webidl/#dfn-obtain-unicode
// 1. Let S be the DOMString value.
var s = String(string);
// 2. Let n be the length of S.
var n = s.length;
// 3. Initialize i to 0.
var i = 0;
// 4. Initialize U to be an empty sequence of Unicode characters.
var u = [];
// 5. While i < n:
while (i < n) {
// 1. Let c be the code unit in S at index i.
var c = s.charCodeAt(i);
// 2. Depending on the value of c:
// c < 0xD800 or c > 0xDFFF
if (c < 0xD800 || c > 0xDFFF) {
// Append to U the Unicode character with code point c.
u.push(c);
}
// 0xDC00 ≤ c ≤ 0xDFFF
else if (0xDC00 <= c && c <= 0xDFFF) {
// Append to U a U+FFFD REPLACEMENT CHARACTER.
u.push(0xFFFD);
}
// 0xD800 ≤ c ≤ 0xDBFF
else if (0xD800 <= c && c <= 0xDBFF) {
// 1. If i = n−1, then append to U a U+FFFD REPLACEMENT
// CHARACTER.
if (i === n - 1) {
u.push(0xFFFD);
}
// 2. Otherwise, i < n−1:
else {
// 1. Let d be the code unit in S at index i+1.
var d = s.charCodeAt(i + 1);
// 2. If 0xDC00 ≤ d ≤ 0xDFFF, then:
if (0xDC00 <= d && d <= 0xDFFF) {
// 1. Let a be c & 0x3FF.
var a = c & 0x3FF;
// 2. Let b be d & 0x3FF.
var b = d & 0x3FF;
// 3. Append to U the Unicode character with code point
// 2^16+2^10*a+b.
u.push(0x10000 + (a << 10) + b);
// 4. Set i to i+1.
i += 1;
}
// 3. Otherwise, d < 0xDC00 or d > 0xDFFF. Append to U a
// U+FFFD REPLACEMENT CHARACTER.
else {
u.push(0xFFFD);
}
}
}
// 3. Set i to i+1.
i += 1;
}
// 6. Return U.
return u;
}
/**
* @param {!Array.<number>} code_points Array of code points.
* @return {string} string String of UTF-16 code units.
*/
function codePointsToString(code_points) {
var s = '';
for (var i = 0; i < code_points.length; ++i) {
var cp = code_points[i];
if (cp <= 0xFFFF) {
s += String.fromCharCode(cp);
} else {
cp -= 0x10000;
s += String.fromCharCode((cp >> 10) + 0xD800,
(cp & 0x3FF) + 0xDC00);
}
}
return s;
}
//
// Implementation of Encoding specification
// https://encoding.spec.whatwg.org/
//
//
// 4. Terminology
//
/**
* An ASCII byte is a byte in the range 0x00 to 0x7F, inclusive.
* @param {number} a The number to test.
* @return {boolean} True if a is in the range 0x00 to 0x7F, inclusive.
*/
function isASCIIByte(a) {
return 0x00 <= a && a <= 0x7F;
}
/**
* An ASCII code point is a code point in the range U+0000 to
* U+007F, inclusive.
*/
var isASCIICodePoint = isASCIIByte;
/**
* End-of-stream is a special token that signifies no more tokens
* are in the stream.
* @const
*/ var end_of_stream = -1;
/**
* A stream represents an ordered sequence of tokens.
*
* @constructor
* @param {!(Array.<number>|Uint8Array)} tokens Array of tokens that provide
* the stream.
*/
function Stream(tokens) {
/** @type {!Array.<number>} */
this.tokens = [].slice.call(tokens);
// Reversed as push/pop is more efficient than shift/unshift.
this.tokens.reverse();
}
Stream.prototype = {
/**
* @return {boolean} True if end-of-stream has been hit.
*/
endOfStream: function() {
return !this.tokens.length;
},
/**
* When a token is read from a stream, the first token in the
* stream must be returned and subsequently removed, and
* end-of-stream must be returned otherwise.
*
* @return {number} Get the next token from the stream, or
* end_of_stream.
*/
read: function() {
if (!this.tokens.length)
return end_of_stream;
return this.tokens.pop();
},
/**
* When one or more tokens are prepended to a stream, those tokens
* must be inserted, in given order, before the first token in the
* stream.
*
* @param {(number|!Array.<number>)} token The token(s) to prepend to the
* stream.
*/
prepend: function(token) {
if (Array.isArray(token)) {
var tokens = /**@type {!Array.<number>}*/(token);
while (tokens.length)
this.tokens.push(tokens.pop());
} else {
this.tokens.push(token);
}
},
/**
* When one or more tokens are pushed to a stream, those tokens
* must be inserted, in given order, after the last token in the
* stream.
*
* @param {(number|!Array.<number>)} token The tokens(s) to push to the
* stream.
*/
push: function(token) {
if (Array.isArray(token)) {
var tokens = /**@type {!Array.<number>}*/(token);
while (tokens.length)
this.tokens.unshift(tokens.shift());
} else {
this.tokens.unshift(token);
}
}
};
//
// 5. Encodings
//
// 5.1 Encoders and decoders
/** @const */
var finished = -1;
/**
* @param {boolean} fatal If true, decoding errors raise an exception.
* @param {number=} opt_code_point Override the standard fallback code point.
* @return {number} The code point to insert on a decoding error.
*/
function decoderError(fatal, opt_code_point) {
if (fatal)
throw TypeError('Decoder error');
return opt_code_point || 0xFFFD;
}
/**
* @param {number} code_point The code point that could not be encoded.
* @return {number} Always throws, no value is actually returned.
*/
function encoderError(code_point) {
throw TypeError('The code point ' + code_point + ' could not be encoded.');
}
// 5.2 Names and labels
// TODO: Define @typedef for Encoding: {name:string,labels:Array.<string>}
// https://github.com/google/closure-compiler/issues/247
/**
* @param {string} label The encoding label.
* @return {?{name:string,labels:Array.<string>}}
*/
function getEncoding(label) {
// 1. Remove any leading and trailing ASCII whitespace from label.
label = String(label).trim().toLowerCase();
// 2. If label is an ASCII case-insensitive match for any of the
// labels listed in the table below, return the corresponding
// encoding, and failure otherwise.
if (Object.prototype.hasOwnProperty.call(label_to_encoding, label)) {
return label_to_encoding[label];
}
return null;
}
/**
* Encodings table: https://encoding.spec.whatwg.org/encodings.json
* @const
* @type {!Array.<{
* heading: string,
* encodings: Array.<{name:string,labels:Array.<string>}>
* }>}
*/
var encodings = [
{
"encodings": [
{
"labels": [
"unicode-1-1-utf-8",
"utf-8",
"utf8"
],
"name": "UTF-8"
}
],
"heading": "The Encoding"
},
{
"encodings": [
{
"labels": [
"866",
"cp866",
"csibm866",
"ibm866"
],
"name": "IBM866"
},
{
"labels": [
"csisolatin2",
"iso-8859-2",
"iso-ir-101",
"iso8859-2",
"iso88592",
"iso_8859-2",
"iso_8859-2:1987",
"l2",
"latin2"
],
"name": "ISO-8859-2"
},
{
"labels": [
"csisolatin3",
"iso-8859-3",
"iso-ir-109",
"iso8859-3",
"iso88593",
"iso_8859-3",
"iso_8859-3:1988",
"l3",
"latin3"
],
"name": "ISO-8859-3"
},
{
"labels": [
"csisolatin4",
"iso-8859-4",
"iso-ir-110",
"iso8859-4",
"iso88594",
"iso_8859-4",
"iso_8859-4:1988",
"l4",
"latin4"
],
"name": "ISO-8859-4"
},
{
"labels": [
"csisolatincyrillic",
"cyrillic",
"iso-8859-5",
"iso-ir-144",
"iso8859-5",
"iso88595",
"iso_8859-5",
"iso_8859-5:1988"
],
"name": "ISO-8859-5"
},
{
"labels": [
"arabic",
"asmo-708",
"csiso88596e",
"csiso88596i",
"csisolatinarabic",
"ecma-114",
"iso-8859-6",
"iso-8859-6-e",
"iso-8859-6-i",
"iso-ir-127",
"iso8859-6",
"iso88596",
"iso_8859-6",
"iso_8859-6:1987"
],
"name": "ISO-8859-6"
},
{
"labels": [
"csisolatingreek",
"ecma-118",
"elot_928",
"greek",
"greek8",
"iso-8859-7",
"iso-ir-126",
"iso8859-7",
"iso88597",
"iso_8859-7",
"iso_8859-7:1987",
"sun_eu_greek"
],
"name": "ISO-8859-7"
},
{
"labels": [
"csiso88598e",
"csisolatinhebrew",
"hebrew",
"iso-8859-8",
"iso-8859-8-e",
"iso-ir-138",
"iso8859-8",
"iso88598",
"iso_8859-8",
"iso_8859-8:1988",
"visual"
],
"name": "ISO-8859-8"
},
{
"labels": [
"csiso88598i",
"iso-8859-8-i",
"logical"
],
"name": "ISO-8859-8-I"
},
{
"labels": [
"csisolatin6",
"iso-8859-10",
"iso-ir-157",
"iso8859-10",
"iso885910",
"l6",
"latin6"
],
"name": "ISO-8859-10"
},
{
"labels": [
"iso-8859-13",
"iso8859-13",
"iso885913"
],
"name": "ISO-8859-13"
},
{
"labels": [
"iso-8859-14",
"iso8859-14",
"iso885914"
],
"name": "ISO-8859-14"
},
{
"labels": [
"csisolatin9",
"iso-8859-15",
"iso8859-15",
"iso885915",
"iso_8859-15",
"l9"
],
"name": "ISO-8859-15"
},
{
"labels": [
"iso-8859-16"
],
"name": "ISO-8859-16"
},
{
"labels": [
"cskoi8r",
"koi",
"koi8",
"koi8-r",
"koi8_r"
],
"name": "KOI8-R"
},
{
"labels": [
"koi8-ru",
"koi8-u"
],
"name": "KOI8-U"
},
{
"labels": [
"csmacintosh",
"mac",
"macintosh",
"x-mac-roman"
],
"name": "macintosh"
},
{
"labels": [
"dos-874",
"iso-8859-11",
"iso8859-11",
"iso885911",
"tis-620",
"windows-874"
],
"name": "windows-874"
},
{
"labels": [
"cp1250",
"windows-1250",
"x-cp1250"
],
"name": "windows-1250"
},
{
"labels": [
"cp1251",
"windows-1251",
"x-cp1251"
],
"name": "windows-1251"
},
{
"labels": [
"ansi_x3.4-1968",
"ascii",
"cp1252",
"cp819",
"csisolatin1",
"ibm819",
"iso-8859-1",
"iso-ir-100",
"iso8859-1",
"iso88591",
"iso_8859-1",
"iso_8859-1:1987",
"l1",
"latin1",
"us-ascii",
"windows-1252",
"x-cp1252"
],
"name": "windows-1252"
},
{
"labels": [
"cp1253",
"windows-1253",
"x-cp1253"
],
"name": "windows-1253"
},
{
"labels": [
"cp1254",
"csisolatin5",
"iso-8859-9",
"iso-ir-148",
"iso8859-9",
"iso88599",
"iso_8859-9",
"iso_8859-9:1989",
"l5",
"latin5",
"windows-1254",
"x-cp1254"
],
"name": "windows-1254"
},
{
"labels": [
"cp1255",
"windows-1255",
"x-cp1255"
],
"name": "windows-1255"
},
{
"labels": [
"cp1256",
"windows-1256",
"x-cp1256"
],
"name": "windows-1256"
},
{
"labels": [
"cp1257",
"windows-1257",
"x-cp1257"
],
"name": "windows-1257"
},
{
"labels": [
"cp1258",
"windows-1258",
"x-cp1258"
],
"name": "windows-1258"
},
{
"labels": [
"x-mac-cyrillic",
"x-mac-ukrainian"
],
"name": "x-mac-cyrillic"
}
],
"heading": "Legacy single-byte encodings"
},
{
"encodings": [
{
"labels": [
"chinese",
"csgb2312",
"csiso58gb231280",
"gb2312",
"gb_2312",
"gb_2312-80",
"gbk",
"iso-ir-58",
"x-gbk"
],
"name": "GBK"
},
{
"labels": [
"gb18030"
],
"name": "gb18030"
}
],
"heading": "Legacy multi-byte Chinese (simplified) encodings"
},
{
"encodings": [
{
"labels": [
"big5",
"big5-hkscs",
"cn-big5",
"csbig5",
"x-x-big5"
],
"name": "Big5"
}
],
"heading": "Legacy multi-byte Chinese (traditional) encodings"
},
{
"encodings": [
{
"labels": [
"cseucpkdfmtjapanese",
"euc-jp",
"x-euc-jp"
],
"name": "EUC-JP"
},
{
"labels": [
"csiso2022jp",
"iso-2022-jp"
],
"name": "ISO-2022-JP"
},
{
"labels": [
"csshiftjis",
"ms932",
"ms_kanji",
"shift-jis",
"shift_jis",
"sjis",
"windows-31j",
"x-sjis"
],
"name": "Shift_JIS"
}
],
"heading": "Legacy multi-byte Japanese encodings"
},
{
"encodings": [
{
"labels": [
"cseuckr",
"csksc56011987",
"euc-kr",
"iso-ir-149",
"korean",
"ks_c_5601-1987",
"ks_c_5601-1989",
"ksc5601",
"ksc_5601",
"windows-949"
],
"name": "EUC-KR"
}
],
"heading": "Legacy multi-byte Korean encodings"
},
{
"encodings": [
{
"labels": [
"csiso2022kr",
"hz-gb-2312",
"iso-2022-cn",
"iso-2022-cn-ext",
"iso-2022-kr"
],
"name": "replacement"
},
{
"labels": [
"utf-16be"
],
"name": "UTF-16BE"
},
{
"labels": [
"utf-16",
"utf-16le"
],
"name": "UTF-16LE"
},
{
"labels": [
"x-user-defined"
],
"name": "x-user-defined"
}
],
"heading": "Legacy miscellaneous encodings"
}
];
// Label to encoding registry.
/** @type {Object.<string,{name:string,labels:Array.<string>}>} */
var label_to_encoding = {};
encodings.forEach(function(category) {
category.encodings.forEach(function(encoding) {
encoding.labels.forEach(function(label) {
label_to_encoding[label] = encoding;
});
});
});
// Registry of of encoder/decoder factories, by encoding name.
/** @type {Object.<string, function({fatal:boolean}): Encoder>} */
var encoders = {};
/** @type {Object.<string, function({fatal:boolean}): Decoder>} */
var decoders = {};
//
// 6. Indexes
//
/**
* @param {number} pointer The |pointer| to search for.
* @param {(!Array.<?number>|undefined)} index The |index| to search within.
* @return {?number} The code point corresponding to |pointer| in |index|,
* or null if |code point| is not in |index|.
*/
function indexCodePointFor(pointer, index) {
if (!index) return null;
return index[pointer] || null;
}
/**
* @param {number} code_point The |code point| to search for.
* @param {!Array.<?number>} index The |index| to search within.
* @return {?number} The first pointer corresponding to |code point| in
* |index|, or null if |code point| is not in |index|.
*/
function indexPointerFor(code_point, index) {
var pointer = index.indexOf(code_point);
return pointer === -1 ? null : pointer;
}
/**
* @param {string} name Name of the index.
* @return {(!Array.<number>|!Array.<Array.<number>>)}
* */
function index(name) {
if (!('encoding-indexes' in global)) {
throw Error("Indexes missing." +
" Did you forget to include encoding-indexes.js first?");
}
return global['encoding-indexes'][name];
}
/**
* @param {number} pointer The |pointer| to search for in the gb18030 index.
* @return {?number} The code point corresponding to |pointer| in |index|,
* or null if |code point| is not in the gb18030 index.
*/
function indexGB18030RangesCodePointFor(pointer) {
// 1. If pointer is greater than 39419 and less than 189000, or
// pointer is greater than 1237575, return null.
if ((pointer > 39419 && pointer < 189000) || (pointer > 1237575))
return null;
// 2. If pointer is 7457, return code point U+E7C7.
if (pointer === 7457) return 0xE7C7;
// 3. Let offset be the last pointer in index gb18030 ranges that
// is equal to or less than pointer and let code point offset be
// its corresponding code point.
var offset = 0;
var code_point_offset = 0;
var idx = index('gb18030-ranges');
var i;
for (i = 0; i < idx.length; ++i) {
/** @type {!Array.<number>} */
var entry = idx[i];
if (entry[0] <= pointer) {
offset = entry[0];
code_point_offset = entry[1];
} else {
break;
}
}
// 4. Return a code point whose value is code point offset +
// pointer − offset.
return code_point_offset + pointer - offset;
}
/**
* @param {number} code_point The |code point| to locate in the gb18030 index.
* @return {number} The first pointer corresponding to |code point| in the
* gb18030 index.
*/
function indexGB18030RangesPointerFor(code_point) {
// 1. If code point is U+E7C7, return pointer 7457.
if (code_point === 0xE7C7) return 7457;
// 2. Let offset be the last code point in index gb18030 ranges
// that is equal to or less than code point and let pointer offset
// be its corresponding pointer.
var offset = 0;
var pointer_offset = 0;
var idx = index('gb18030-ranges');
var i;
for (i = 0; i < idx.length; ++i) {
/** @type {!Array.<number>} */
var entry = idx[i];
if (entry[1] <= code_point) {
offset = entry[1];
pointer_offset = entry[0];
} else {
break;
}
}
// 3. Return a pointer whose value is pointer offset + code point
// − offset.
return pointer_offset + code_point - offset;
}
/**
* @param {number} code_point The |code_point| to search for in the Shift_JIS
* index.
* @return {?number} The code point corresponding to |pointer| in |index|,
* or null if |code point| is not in the Shift_JIS index.
*/
function indexShiftJISPointerFor(code_point) {
// 1. Let index be index jis0208 excluding all entries whose
// pointer is in the range 8272 to 8835, inclusive.
shift_jis_index = shift_jis_index ||
index('jis0208').map(function(code_point, pointer) {
return inRange(pointer, 8272, 8835) ? null : code_point;
});
var index_ = shift_jis_index;
// 2. Return the index pointer for code point in index.
return index_.indexOf(code_point);
}
var shift_jis_index;
/**
* @param {number} code_point The |code_point| to search for in the big5
* index.
* @return {?number} The code point corresponding to |pointer| in |index|,
* or null if |code point| is not in the big5 index.
*/
function indexBig5PointerFor(code_point) {
// 1. Let index be index Big5 excluding all entries whose pointer
big5_index_no_hkscs = big5_index_no_hkscs ||
index('big5').map(function(code_point, pointer) {
return (pointer < (0xA1 - 0x81) * 157) ? null : code_point;
});
var index_ = big5_index_no_hkscs;
// 2. If code point is U+2550, U+255E, U+2561, U+256A, U+5341, or
// U+5345, return the last pointer corresponding to code point in
// index.
if (code_point === 0x2550 || code_point === 0x255E ||
code_point === 0x2561 || code_point === 0x256A ||
code_point === 0x5341 || code_point === 0x5345) {
return index_.lastIndexOf(code_point);
}
// 3. Return the index pointer for code point in index.
return indexPointerFor(code_point, index_);
}
var big5_index_no_hkscs;
//
// 8. API
//
/** @const */ var DEFAULT_ENCODING = 'utf-8';
// 8.1 Interface TextDecoder
/**
* @constructor
* @param {string=} label The label of the encoding;
* defaults to 'utf-8'.
* @param {Object=} options
*/
function TextDecoder(label, options) {
// Web IDL conventions
if (!(this instanceof TextDecoder))
throw TypeError('Called as a function. Did you forget \'new\'?');
label = label !== undefined ? String(label) : DEFAULT_ENCODING;
options = ToDictionary(options);
// A TextDecoder object has an associated encoding, decoder,
// stream, ignore BOM flag (initially unset), BOM seen flag
// (initially unset), error mode (initially replacement), and do
// not flush flag (initially unset).
/** @private */
this._encoding = null;
/** @private @type {?Decoder} */
this._decoder = null;
/** @private @type {boolean} */
this._ignoreBOM = false;
/** @private @type {boolean} */
this._BOMseen = false;
/** @private @type {string} */
this._error_mode = 'replacement';
/** @private @type {boolean} */
this._do_not_flush = false;
// 1. Let encoding be the result of getting an encoding from
// label.
var encoding = getEncoding(label);
// 2. If encoding is failure or replacement, throw a RangeError.
if (encoding === null || encoding.name === 'replacement')
throw RangeError('Unknown encoding: ' + label);
if (!decoders[encoding.name]) {
throw Error('Decoder not present.' +
' Did you forget to include encoding-indexes.js first?');
}
// 3. Let dec be a new TextDecoder object.
var dec = this;
// 4. Set dec's encoding to encoding.
dec._encoding = encoding;
// 5. If options's fatal member is true, set dec's error mode to
// fatal.
if (Boolean(options['fatal']))
dec._error_mode = 'fatal';
// 6. If options's ignoreBOM member is true, set dec's ignore BOM
// flag.
if (Boolean(options['ignoreBOM']))
dec._ignoreBOM = true;
// For pre-ES5 runtimes:
if (!Object.defineProperty) {
this.encoding = dec._encoding.name.toLowerCase();
this.fatal = dec._error_mode === 'fatal';
this.ignoreBOM = dec._ignoreBOM;
}
// 7. Return dec.
return dec;
}
if (Object.defineProperty) {
// The encoding attribute's getter must return encoding's name.
Object.defineProperty(TextDecoder.prototype, 'encoding', {
/** @this {TextDecoder} */
get: function() { return this._encoding.name.toLowerCase(); }
});
// The fatal attribute's getter must return true if error mode
// is fatal, and false otherwise.
Object.defineProperty(TextDecoder.prototype, 'fatal', {
/** @this {TextDecoder} */
get: function() { return this._error_mode === 'fatal'; }
});
// The ignoreBOM attribute's getter must return true if ignore
// BOM flag is set, and false otherwise.
Object.defineProperty(TextDecoder.prototype, 'ignoreBOM', {
/** @this {TextDecoder} */
get: function() { return this._ignoreBOM; }
});
}
/**
* @param {BufferSource=} input The buffer of bytes to decode.
* @param {Object=} options
* @return {string} The decoded string.
*/
TextDecoder.prototype.decode = function decode(input, options) {
var bytes;
if (typeof input === 'object' && input instanceof ArrayBuffer) {
bytes = new Uint8Array(input);
} else if (typeof input === 'object' && 'buffer' in input &&
input.buffer instanceof ArrayBuffer) {
bytes = new Uint8Array(input.buffer,
input.byteOffset,
input.byteLength);
} else {
bytes = new Uint8Array(0);
}
options = ToDictionary(options);
// 1. If the do not flush flag is unset, set decoder to a new
// encoding's decoder, set stream to a new stream, and unset the
// BOM seen flag.
if (!this._do_not_flush) {
this._decoder = decoders[this._encoding.name]({
fatal: this._error_mode === 'fatal'});
this._BOMseen = false;
}
// 2. If options's stream is true, set the do not flush flag, and
// unset the do not flush flag otherwise.
this._do_not_flush = Boolean(options['stream']);
// 3. If input is given, push a copy of input to stream.
// TODO: Align with spec algorithm - maintain stream on instance.
var input_stream = new Stream(bytes);
// 4. Let output be a new stream.
var output = [];
/** @type {?(number|!Array.<number>)} */
var result;
// 5. While true:
while (true) {
// 1. Let token be the result of reading from stream.
var token = input_stream.read();
// 2. If token is end-of-stream and the do not flush flag is
// set, return output, serialized.
// TODO: Align with spec algorithm.
if (token === end_of_stream)
break;
// 3. Otherwise, run these subsubsteps:
// 1. Let result be the result of processing token for decoder,
// stream, output, and error mode.
result = this._decoder.handler(input_stream, token);
// 2. If result is finished, return output, serialized.
if (result === finished)
break;
if (result !== null) {
if (Array.isArray(result))
output.push.apply(output, /**@type {!Array.<number>}*/(result));
else
output.push(result);
}
// 3. Otherwise, if result is error, throw a TypeError.
// (Thrown in handler)
// 4. Otherwise, do nothing.
}
// TODO: Align with spec algorithm.
if (!this._do_not_flush) {
do {
result = this._decoder.handler(input_stream, input_stream.read());
if (result === finished)
break;
if (result === null)
continue;
if (Array.isArray(result))
output.push.apply(output, /**@type {!Array.<number>}*/(result));
else
output.push(result);
} while (!input_stream.endOfStream());
this._decoder = null;
}
// A TextDecoder object also has an associated serialize stream
// algorithm...
/**
* @param {!Array.<number>} stream
* @return {string}
* @this {TextDecoder}
*/
function serializeStream(stream) {
// 1. Let token be the result of reading from stream.
// (Done in-place on array, rather than as a stream)
// 2. If encoding is UTF-8, UTF-16BE, or UTF-16LE, and ignore
// BOM flag and BOM seen flag are unset, run these subsubsteps:
if (includes(['UTF-8', 'UTF-16LE', 'UTF-16BE'], this._encoding.name) &&
!this._ignoreBOM && !this._BOMseen) {
if (stream.length > 0 && stream[0] === 0xFEFF) {
// 1. If token is U+FEFF, set BOM seen flag.
this._BOMseen = true;
stream.shift();
} else if (stream.length > 0) {
// 2. Otherwise, if token is not end-of-stream, set BOM seen
// flag and append token to stream.
this._BOMseen = true;
} else ;
}
// 4. Otherwise, return output.
return codePointsToString(stream);
}
return serializeStream.call(this, output);
};
// 8.2 Interface TextEncoder
/**
* @constructor
* @param {string=} label The label of the encoding. NONSTANDARD.
* @param {Object=} options NONSTANDARD.
*/
function TextEncoder(label, options) {
// Web IDL conventions
if (!(this instanceof TextEncoder))
throw TypeError('Called as a function. Did you forget \'new\'?');
options = ToDictionary(options);
// A TextEncoder object has an associated encoding and encoder.
/** @private */
this._encoding = null;
/** @private @type {?Encoder} */
this._encoder = null;
// Non-standard
/** @private @type {boolean} */
this._do_not_flush = false;
/** @private @type {string} */
this._fatal = Boolean(options['fatal']) ? 'fatal' : 'replacement';
// 1. Let enc be a new TextEncoder object.
var enc = this;
// 2. Set enc's encoding to UTF-8's encoder.
if (Boolean(options['NONSTANDARD_allowLegacyEncoding'])) {
// NONSTANDARD behavior.
label = label !== undefined ? String(label) : DEFAULT_ENCODING;
var encoding = getEncoding(label);
if (encoding === null || encoding.name === 'replacement')
throw RangeError('Unknown encoding: ' + label);
if (!encoders[encoding.name]) {
throw Error('Encoder not present.' +
' Did you forget to include encoding-indexes.js first?');
}
enc._encoding = encoding;
} else {
// Standard behavior.
enc._encoding = getEncoding('utf-8');
if (label !== undefined && 'console' in global) {
console.warn('TextEncoder constructor called with encoding label, '
+ 'which is ignored.');
}
}
// For pre-ES5 runtimes:
if (!Object.defineProperty)
this.encoding = enc._encoding.name.toLowerCase();
// 3. Return enc.
return enc;
}
if (Object.defineProperty) {
// The encoding attribute's getter must return encoding's name.
Object.defineProperty(TextEncoder.prototype, 'encoding', {
/** @this {TextEncoder} */
get: function() { return this._encoding.name.toLowerCase(); }
});
}
/**
* @param {string=} opt_string The string to encode.
* @param {Object=} options
* @return {!Uint8Array} Encoded bytes, as a Uint8Array.
*/
TextEncoder.prototype.encode = function encode(opt_string, options) {
opt_string = opt_string === undefined ? '' : String(opt_string);
options = ToDictionary(options);
// NOTE: This option is nonstandard. None of the encodings
// permitted for encoding (i.e. UTF-8, UTF-16) are stateful when
// the input is a USVString so streaming is not necessary.
if (!this._do_not_flush)
this._encoder = encoders[this._encoding.name]({
fatal: this._fatal === 'fatal'});
this._do_not_flush = Boolean(options['stream']);
// 1. Convert input to a stream.
var input = new Stream(stringToCodePoints(opt_string));
// 2. Let output be a new stream
var output = [];
/** @type {?(number|!Array.<number>)} */
var result;
// 3. While true, run these substeps:
while (true) {
// 1. Let token be the result of reading from input.
var token = input.read();
if (token === end_of_stream)
break;
// 2. Let result be the result of processing token for encoder,
// input, output.
result = this._encoder.handler(input, token);
if (result === finished)
break;
if (Array.isArray(result))
output.push.apply(output, /**@type {!Array.<number>}*/(result));
else
output.push(result);
}
// TODO: Align with spec algorithm.
if (!this._do_not_flush) {
while (true) {
result = this._encoder.handler(input, input.read());
if (result === finished)
break;
if (Array.isArray(result))
output.push.apply(output, /**@type {!Array.<number>}*/(result));
else
output.push(result);
}
this._encoder = null;
}
// 3. If result is finished, convert output into a byte sequence,
// and then return a Uint8Array object wrapping an ArrayBuffer
// containing output.
return new Uint8Array(output);
};
//
// 9. The encoding
//
// 9.1 utf-8
// 9.1.1 utf-8 decoder
/**
* @constructor
* @implements {Decoder}
* @param {{fatal: boolean}} options
*/
function UTF8Decoder(options) {
var fatal = options.fatal;
// utf-8's decoder's has an associated utf-8 code point, utf-8
// bytes seen, and utf-8 bytes needed (all initially 0), a utf-8
// lower boundary (initially 0x80), and a utf-8 upper boundary
// (initially 0xBF).
var /** @type {number} */ utf8_code_point = 0,
/** @type {number} */ utf8_bytes_seen = 0,
/** @type {number} */ utf8_bytes_needed = 0,
/** @type {number} */ utf8_lower_boundary = 0x80,
/** @type {number} */ utf8_upper_boundary = 0xBF;
/**
* @param {Stream} stream The stream of bytes being decoded.
* @param {number} bite The next byte read from the stream.
* @return {?(number|!Array.<number>)} The next code point(s)
* decoded, or null if not enough data exists in the input
* stream to decode a complete code point.
*/
this.handler = function(stream, bite) {
// 1. If byte is end-of-stream and utf-8 bytes needed is not 0,
// set utf-8 bytes needed to 0 and return error.
if (bite === end_of_stream && utf8_bytes_needed !== 0) {
utf8_bytes_needed = 0;
return decoderError(fatal);
}
// 2. If byte is end-of-stream, return finished.
if (bite === end_of_stream)
return finished;
// 3. If utf-8 bytes needed is 0, based on byte:
if (utf8_bytes_needed === 0) {
// 0x00 to 0x7F
if (inRange(bite, 0x00, 0x7F)) {
// Return a code point whose value is byte.
return bite;
}
// 0xC2 to 0xDF
else if (inRange(bite, 0xC2, 0xDF)) {
// 1. Set utf-8 bytes needed to 1.
utf8_bytes_needed = 1;
// 2. Set UTF-8 code point to byte & 0x1F.
utf8_code_point = bite & 0x1F;
}
// 0xE0 to 0xEF
else if (inRange(bite, 0xE0, 0xEF)) {
// 1. If byte is 0xE0, set utf-8 lower boundary to 0xA0.
if (bite === 0xE0)
utf8_lower_boundary = 0xA0;
// 2. If byte is 0xED, set utf-8 upper boundary to 0x9F.
if (bite === 0xED)
utf8_upper_boundary = 0x9F;
// 3. Set utf-8 bytes needed to 2.
utf8_bytes_needed = 2;
// 4. Set UTF-8 code point to byte & 0xF.
utf8_code_point = bite & 0xF;
}
// 0xF0 to 0xF4
else if (inRange(bite, 0xF0, 0xF4)) {
// 1. If byte is 0xF0, set utf-8 lower boundary to 0x90.
if (bite === 0xF0)
utf8_lower_boundary = 0x90;
// 2. If byte is 0xF4, set utf-8 upper boundary to 0x8F.
if (bite === 0xF4)
utf8_upper_boundary = 0x8F;
// 3. Set utf-8 bytes needed to 3.
utf8_bytes_needed = 3;
// 4. Set UTF-8 code point to byte & 0x7.
utf8_code_point = bite & 0x7;
}
// Otherwise
else {
// Return error.
return decoderError(fatal);
}
// Return continue.
return null;
}
// 4. If byte is not in the range utf-8 lower boundary to utf-8
// upper boundary, inclusive, run these substeps:
if (!inRange(bite, utf8_lower_boundary, utf8_upper_boundary)) {
// 1. Set utf-8 code point, utf-8 bytes needed, and utf-8
// bytes seen to 0, set utf-8 lower boundary to 0x80, and set
// utf-8 upper boundary to 0xBF.
utf8_code_point = utf8_bytes_needed = utf8_bytes_seen = 0;
utf8_lower_boundary = 0x80;
utf8_upper_boundary = 0xBF;
// 2. Prepend byte to stream.
stream.prepend(bite);
// 3. Return error.
return decoderError(fatal);
}
// 5. Set utf-8 lower boundary to 0x80 and utf-8 upper boundary
// to 0xBF.
utf8_lower_boundary = 0x80;
utf8_upper_boundary = 0xBF;
// 6. Set UTF-8 code point to (UTF-8 code point << 6) | (byte &
// 0x3F)
utf8_code_point = (utf8_code_point << 6) | (bite & 0x3F);
// 7. Increase utf-8 bytes seen by one.
utf8_bytes_seen += 1;
// 8. If utf-8 bytes seen is not equal to utf-8 bytes needed,
// continue.
if (utf8_bytes_seen !== utf8_bytes_needed)
return null;
// 9. Let code point be utf-8 code point.
var code_point = utf8_code_point;
// 10. Set utf-8 code point, utf-8 bytes needed, and utf-8 bytes
// seen to 0.
utf8_code_point = utf8_bytes_needed = utf8_bytes_seen = 0;
// 11. Return a code point whose value is code point.
return code_point;
};
}
// 9.1.2 utf-8 encoder
/**
* @constructor
* @implements {Encoder}
* @param {{fatal: boolean}} options
*/
function UTF8Encoder(options) {
options.fatal;
/**
* @param {Stream} stream Input stream.
* @param {number} code_point Next code point read from the stream.
* @return {(number|!Array.<number>)} Byte(s) to emit.
*/
this.handler = function(stream, code_point) {
// 1. If code point is end-of-stream, return finished.
if (code_point === end_of_stream)
return finished;
// 2. If code point is an ASCII code point, return a byte whose
// value is code point.
if (isASCIICodePoint(code_point))
return code_point;
// 3. Set count and offset based on the range code point is in:
var count, offset;
// U+0080 to U+07FF, inclusive:
if (inRange(code_point, 0x0080, 0x07FF)) {
// 1 and 0xC0
count = 1;
offset = 0xC0;
}
// U+0800 to U+FFFF, inclusive:
else if (inRange(code_point, 0x0800, 0xFFFF)) {
// 2 and 0xE0
count = 2;
offset = 0xE0;
}
// U+10000 to U+10FFFF, inclusive:
else if (inRange(code_point, 0x10000, 0x10FFFF)) {
// 3 and 0xF0
count = 3;
offset = 0xF0;
}
// 4. Let bytes be a byte sequence whose first byte is (code
// point >> (6 × count)) + offset.
var bytes = [(code_point >> (6 * count)) + offset];
// 5. Run these substeps while count is greater than 0:
while (count > 0) {
// 1. Set temp to code point >> (6 × (count − 1)).
var temp = code_point >> (6 * (count - 1));
// 2. Append to bytes 0x80 | (temp & 0x3F).
bytes.push(0x80 | (temp & 0x3F));
// 3. Decrease count by one.
count -= 1;
}
// 6. Return bytes bytes, in order.
return bytes;
};
}
/** @param {{fatal: boolean}} options */
encoders['UTF-8'] = function(options) {
return new UTF8Encoder(options);
};
/** @param {{fatal: boolean}} options */
decoders['UTF-8'] = function(options) {
return new UTF8Decoder(options);
};
//
// 10. Legacy single-byte encodings
//
// 10.1 single-byte decoder
/**
* @constructor
* @implements {Decoder}
* @param {!Array.<number>} index The encoding index.
* @param {{fatal: boolean}} options
*/
function SingleByteDecoder(index, options) {
var fatal = options.fatal;
/**
* @param {Stream} stream The stream of bytes being decoded.
* @param {number} bite The next byte read from the stream.
* @return {?(number|!Array.<number>)} The next code point(s)
* decoded, or null if not enough data exists in the input
* stream to decode a complete code point.
*/
this.handler = function(stream, bite) {
// 1. If byte is end-of-stream, return finished.
if (bite === end_of_stream)
return finished;
// 2. If byte is an ASCII byte, return a code point whose value
// is byte.
if (isASCIIByte(bite))
return bite;
// 3. Let code point be the index code point for byte − 0x80 in
// index single-byte.
var code_point = index[bite - 0x80];
// 4. If code point is null, return error.
if (code_point === null)
return decoderError(fatal);
// 5. Return a code point whose value is code point.
return code_point;
};
}
// 10.2 single-byte encoder
/**
* @constructor
* @implements {Encoder}
* @param {!Array.<?number>} index The encoding index.
* @param {{fatal: boolean}} options
*/
function SingleByteEncoder(index, options) {
options.fatal;
/**
* @param {Stream} stream Input stream.
* @param {number} code_point Next code point read from the stream.
* @return {(number|!Array.<number>)} Byte(s) to emit.
*/
this.handler = function(stream, code_point) {
// 1. If code point is end-of-stream, return finished.
if (code_point === end_of_stream)
return finished;
// 2. If code point is an ASCII code point, return a byte whose
// value is code point.
if (isASCIICodePoint(code_point))
return code_point;
// 3. Let pointer be the index pointer for code point in index
// single-byte.
var pointer = indexPointerFor(code_point, index);
// 4. If pointer is null, return error with code point.
if (pointer === null)
encoderError(code_point);
// 5. Return a byte whose value is pointer + 0x80.
return pointer + 0x80;
};
}
(function() {
if (!('encoding-indexes' in global))
return;
encodings.forEach(function(category) {
if (category.heading !== 'Legacy single-byte encodings')
return;
category.encodings.forEach(function(encoding) {
var name = encoding.name;
var idx = index(name.toLowerCase());
/** @param {{fatal: boolean}} options */
decoders[name] = function(options) {
return new SingleByteDecoder(idx, options);
};
/** @param {{fatal: boolean}} options */
encoders[name] = function(options) {
return new SingleByteEncoder(idx, options);
};
});
});
}());
//
// 11. Legacy multi-byte Chinese (simplified) encodings
//
// 11.1 gbk
// 11.1.1 gbk decoder
// gbk's decoder is gb18030's decoder.
/** @param {{fatal: boolean}} options */
decoders['GBK'] = function(options) {
return new GB18030Decoder(options);
};
// 11.1.2 gbk encoder
// gbk's encoder is gb18030's encoder with its gbk flag set.
/** @param {{fatal: boolean}} options */
encoders['GBK'] = function(options) {
return new GB18030Encoder(options, true);
};
// 11.2 gb18030
// 11.2.1 gb18030 decoder
/**
* @constructor
* @implements {Decoder}
* @param {{fatal: boolean}} options
*/
function GB18030Decoder(options) {
var fatal = options.fatal;
// gb18030's decoder has an associated gb18030 first, gb18030
// second, and gb18030 third (all initially 0x00).
var /** @type {number} */ gb18030_first = 0x00,
/** @type {number} */ gb18030_second = 0x00,
/** @type {number} */ gb18030_third = 0x00;
/**
* @param {Stream} stream The stream of bytes being decoded.
* @param {number} bite The next byte read from the stream.
* @return {?(number|!Array.<number>)} The next code point(s)
* decoded, or null if not enough data exists in the input
* stream to decode a complete code point.
*/
this.handler = function(stream, bite) {
// 1. If byte is end-of-stream and gb18030 first, gb18030
// second, and gb18030 third are 0x00, return finished.
if (bite === end_of_stream && gb18030_first === 0x00 &&
gb18030_second === 0x00 && gb18030_third === 0x00) {
return finished;
}
// 2. If byte is end-of-stream, and gb18030 first, gb18030
// second, or gb18030 third is not 0x00, set gb18030 first,
// gb18030 second, and gb18030 third to 0x00, and return error.
if (bite === end_of_stream &&
(gb18030_first !== 0x00 || gb18030_second !== 0x00 ||
gb18030_third !== 0x00)) {
gb18030_first = 0x00;
gb18030_second = 0x00;
gb18030_third = 0x00;
decoderError(fatal);
}
var code_point;
// 3. If gb18030 third is not 0x00, run these substeps:
if (gb18030_third !== 0x00) {
// 1. Let code point be null.
code_point = null;
// 2. If byte is in the range 0x30 to 0x39, inclusive, set
// code point to the index gb18030 ranges code point for
// (((gb18030 first − 0x81) × 10 + gb18030 second − 0x30) ×
// 126 + gb18030 third − 0x81) × 10 + byte − 0x30.
if (inRange(bite, 0x30, 0x39)) {
code_point = indexGB18030RangesCodePointFor(
(((gb18030_first - 0x81) * 10 + gb18030_second - 0x30) * 126 +
gb18030_third - 0x81) * 10 + bite - 0x30);
}
// 3. Let buffer be a byte sequence consisting of gb18030
// second, gb18030 third, and byte, in order.
var buffer = [gb18030_second, gb18030_third, bite];
// 4. Set gb18030 first, gb18030 second, and gb18030 third to
// 0x00.
gb18030_first = 0x00;
gb18030_second = 0x00;
gb18030_third = 0x00;
// 5. If code point is null, prepend buffer to stream and
// return error.
if (code_point === null) {
stream.prepend(buffer);
return decoderError(fatal);
}
// 6. Return a code point whose value is code point.
return code_point;
}
// 4. If gb18030 second is not 0x00, run these substeps:
if (gb18030_second !== 0x00) {
// 1. If byte is in the range 0x81 to 0xFE, inclusive, set
// gb18030 third to byte and return continue.
if (inRange(bite, 0x81, 0xFE)) {
gb18030_third = bite;
return null;
}
// 2. Prepend gb18030 second followed by byte to stream, set
// gb18030 first and gb18030 second to 0x00, and return error.
stream.prepend([gb18030_second, bite]);
gb18030_first = 0x00;
gb18030_second = 0x00;
return decoderError(fatal);
}
// 5. If gb18030 first is not 0x00, run these substeps:
if (gb18030_first !== 0x00) {
// 1. If byte is in the range 0x30 to 0x39, inclusive, set
// gb18030 second to byte and return continue.
if (inRange(bite, 0x30, 0x39)) {
gb18030_second = bite;
return null;
}
// 2. Let lead be gb18030 first, let pointer be null, and set
// gb18030 first to 0x00.
var lead = gb18030_first;
var pointer = null;
gb18030_first = 0x00;
// 3. Let offset be 0x40 if byte is less than 0x7F and 0x41
// otherwise.
var offset = bite < 0x7F ? 0x40 : 0x41;
// 4. If byte is in the range 0x40 to 0x7E, inclusive, or 0x80
// to 0xFE, inclusive, set pointer to (lead − 0x81) × 190 +
// (byte − offset).
if (inRange(bite, 0x40, 0x7E) || inRange(bite, 0x80, 0xFE))
pointer = (lead - 0x81) * 190 + (bite - offset);
// 5. Let code point be null if pointer is null and the index
// code point for pointer in index gb18030 otherwise.
code_point = pointer === null ? null :
indexCodePointFor(pointer, index('gb18030'));
// 6. If code point is null and byte is an ASCII byte, prepend
// byte to stream.
if (code_point === null && isASCIIByte(bite))
stream.prepend(bite);
// 7. If code point is null, return error.
if (code_point === null)
return decoderError(fatal);
// 8. Return a code point whose value is code point.
return code_point;
}
// 6. If byte is an ASCII byte, return a code point whose value
// is byte.
if (isASCIIByte(bite))
return bite;
// 7. If byte is 0x80, return code point U+20AC.
if (bite === 0x80)
return 0x20AC;
// 8. If byte is in the range 0x81 to 0xFE, inclusive, set
// gb18030 first to byte and return continue.
if (inRange(bite, 0x81, 0xFE)) {
gb18030_first = bite;
return null;
}
// 9. Return error.
return decoderError(fatal);
};
}
// 11.2.2 gb18030 encoder
/**
* @constructor
* @implements {Encoder}
* @param {{fatal: boolean}} options
* @param {boolean=} gbk_flag
*/
function GB18030Encoder(options, gbk_flag) {
options.fatal;
// gb18030's decoder has an associated gbk flag (initially unset).
/**
* @param {Stream} stream Input stream.
* @param {number} code_point Next code point read from the stream.
* @return {(number|!Array.<number>)} Byte(s) to emit.
*/
this.handler = function(stream, code_point) {
// 1. If code point is end-of-stream, return finished.
if (code_point === end_of_stream)
return finished;
// 2. If code point is an ASCII code point, return a byte whose
// value is code point.
if (isASCIICodePoint(code_point))
return code_point;
// 3. If code point is U+E5E5, return error with code point.
if (code_point === 0xE5E5)
return encoderError(code_point);
// 4. If the gbk flag is set and code point is U+20AC, return
// byte 0x80.
if (gbk_flag && code_point === 0x20AC)
return 0x80;
// 5. Let pointer be the index pointer for code point in index
// gb18030.
var pointer = indexPointerFor(code_point, index('gb18030'));
// 6. If pointer is not null, run these substeps:
if (pointer !== null) {
// 1. Let lead be floor(pointer / 190) + 0x81.
var lead = floor(pointer / 190) + 0x81;
// 2. Let trail be pointer % 190.
var trail = pointer % 190;
// 3. Let offset be 0x40 if trail is less than 0x3F and 0x41 otherwise.
var offset = trail < 0x3F ? 0x40 : 0x41;
// 4. Return two bytes whose values are lead and trail + offset.
return [lead, trail + offset];
}
// 7. If gbk flag is set, return error with code point.
if (gbk_flag)
return encoderError(code_point);
// 8. Set pointer to the index gb18030 ranges pointer for code
// point.
pointer = indexGB18030RangesPointerFor(code_point);
// 9. Let byte1 be floor(pointer / 10 / 126 / 10).
var byte1 = floor(pointer / 10 / 126 / 10);
// 10. Set pointer to pointer − byte1 × 10 × 126 × 10.
pointer = pointer - byte1 * 10 * 126 * 10;
// 11. Let byte2 be floor(pointer / 10 / 126).
var byte2 = floor(pointer / 10 / 126);
// 12. Set pointer to pointer − byte2 × 10 × 126.
pointer = pointer - byte2 * 10 * 126;
// 13. Let byte3 be floor(pointer / 10).
var byte3 = floor(pointer / 10);
// 14. Let byte4 be pointer − byte3 × 10.
var byte4 = pointer - byte3 * 10;
// 15. Return four bytes whose values are byte1 + 0x81, byte2 +
// 0x30, byte3 + 0x81, byte4 + 0x30.
return [byte1 + 0x81,
byte2 + 0x30,
byte3 + 0x81,
byte4 + 0x30];
};
}
/** @param {{fatal: boolean}} options */
encoders['gb18030'] = function(options) {
return new GB18030Encoder(options);
};
/** @param {{fatal: boolean}} options */
decoders['gb18030'] = function(options) {
return new GB18030Decoder(options);
};
//
// 12. Legacy multi-byte Chinese (traditional) encodings
//
// 12.1 Big5
// 12.1.1 Big5 decoder
/**
* @constructor
* @implements {Decoder}
* @param {{fatal: boolean}} options
*/
function Big5Decoder(options) {
var fatal = options.fatal;
// Big5's decoder has an associated Big5 lead (initially 0x00).
var /** @type {number} */ Big5_lead = 0x00;
/**
* @param {Stream} stream The stream of bytes being decoded.
* @param {number} bite The next byte read from the stream.
* @return {?(number|!Array.<number>)} The next code point(s)
* decoded, or null if not enough data exists in the input
* stream to decode a complete code point.
*/
this.handler = function(stream, bite) {
// 1. If byte is end-of-stream and Big5 lead is not 0x00, set
// Big5 lead to 0x00 and return error.
if (bite === end_of_stream && Big5_lead !== 0x00) {
Big5_lead = 0x00;
return decoderError(fatal);
}
// 2. If byte is end-of-stream and Big5 lead is 0x00, return
// finished.
if (bite === end_of_stream && Big5_lead === 0x00)
return finished;
// 3. If Big5 lead is not 0x00, let lead be Big5 lead, let
// pointer be null, set Big5 lead to 0x00, and then run these
// substeps:
if (Big5_lead !== 0x00) {
var lead = Big5_lead;
var pointer = null;
Big5_lead = 0x00;
// 1. Let offset be 0x40 if byte is less than 0x7F and 0x62
// otherwise.
var offset = bite < 0x7F ? 0x40 : 0x62;
// 2. If byte is in the range 0x40 to 0x7E, inclusive, or 0xA1
// to 0xFE, inclusive, set pointer to (lead − 0x81) × 157 +
// (byte − offset).
if (inRange(bite, 0x40, 0x7E) || inRange(bite, 0xA1, 0xFE))
pointer = (lead - 0x81) * 157 + (bite - offset);
// 3. If there is a row in the table below whose first column
// is pointer, return the two code points listed in its second
// column
// Pointer | Code points
// --------+--------------
// 1133 | U+00CA U+0304
// 1135 | U+00CA U+030C
// 1164 | U+00EA U+0304
// 1166 | U+00EA U+030C
switch (pointer) {
case 1133: return [0x00CA, 0x0304];
case 1135: return [0x00CA, 0x030C];
case 1164: return [0x00EA, 0x0304];
case 1166: return [0x00EA, 0x030C];
}
// 4. Let code point be null if pointer is null and the index
// code point for pointer in index Big5 otherwise.
var code_point = (pointer === null) ? null :
indexCodePointFor(pointer, index('big5'));
// 5. If code point is null and byte is an ASCII byte, prepend
// byte to stream.
if (code_point === null && isASCIIByte(bite))
stream.prepend(bite);
// 6. If code point is null, return error.
if (code_point === null)
return decoderError(fatal);
// 7. Return a code point whose value is code point.
return code_point;
}
// 4. If byte is an ASCII byte, return a code point whose value
// is byte.
if (isASCIIByte(bite))
return bite;
// 5. If byte is in the range 0x81 to 0xFE, inclusive, set Big5
// lead to byte and return continue.
if (inRange(bite, 0x81, 0xFE)) {
Big5_lead = bite;
return null;
}
// 6. Return error.
return decoderError(fatal);
};
}
// 12.1.2 Big5 encoder
/**
* @constructor
* @implements {Encoder}
* @param {{fatal: boolean}} options
*/
function Big5Encoder(options) {
options.fatal;
/**
* @param {Stream} stream Input stream.
* @param {number} code_point Next code point read from the stream.
* @return {(number|!Array.<number>)} Byte(s) to emit.
*/
this.handler = function(stream, code_point) {
// 1. If code point is end-of-stream, return finished.
if (code_point === end_of_stream)
return finished;
// 2. If code point is an ASCII code point, return a byte whose
// value is code point.
if (isASCIICodePoint(code_point))
return code_point;
// 3. Let pointer be the index Big5 pointer for code point.
var pointer = indexBig5PointerFor(code_point);
// 4. If pointer is null, return error with code point.
if (pointer === null)
return encoderError(code_point);
// 5. Let lead be floor(pointer / 157) + 0x81.
var lead = floor(pointer / 157) + 0x81;
// 6. If lead is less than 0xA1, return error with code point.
if (lead < 0xA1)
return encoderError(code_point);
// 7. Let trail be pointer % 157.
var trail = pointer % 157;
// 8. Let offset be 0x40 if trail is less than 0x3F and 0x62
// otherwise.
var offset = trail < 0x3F ? 0x40 : 0x62;
// Return two bytes whose values are lead and trail + offset.
return [lead, trail + offset];
};
}
/** @param {{fatal: boolean}} options */
encoders['Big5'] = function(options) {
return new Big5Encoder(options);
};
/** @param {{fatal: boolean}} options */
decoders['Big5'] = function(options) {
return new Big5Decoder(options);
};
//
// 13. Legacy multi-byte Japanese encodings
//
// 13.1 euc-jp
// 13.1.1 euc-jp decoder
/**
* @constructor
* @implements {Decoder}
* @param {{fatal: boolean}} options
*/
function EUCJPDecoder(options) {
var fatal = options.fatal;
// euc-jp's decoder has an associated euc-jp jis0212 flag
// (initially unset) and euc-jp lead (initially 0x00).
var /** @type {boolean} */ eucjp_jis0212_flag = false,
/** @type {number} */ eucjp_lead = 0x00;
/**
* @param {Stream} stream The stream of bytes being decoded.
* @param {number} bite The next byte read from the stream.
* @return {?(number|!Array.<number>)} The next code point(s)
* decoded, or null if not enough data exists in the input
* stream to decode a complete code point.
*/
this.handler = function(stream, bite) {
// 1. If byte is end-of-stream and euc-jp lead is not 0x00, set
// euc-jp lead to 0x00, and return error.
if (bite === end_of_stream && eucjp_lead !== 0x00) {
eucjp_lead = 0x00;
return decoderError(fatal);
}
// 2. If byte is end-of-stream and euc-jp lead is 0x00, return
// finished.
if (bite === end_of_stream && eucjp_lead === 0x00)
return finished;
// 3. If euc-jp lead is 0x8E and byte is in the range 0xA1 to
// 0xDF, inclusive, set euc-jp lead to 0x00 and return a code
// point whose value is 0xFF61 − 0xA1 + byte.
if (eucjp_lead === 0x8E && inRange(bite, 0xA1, 0xDF)) {
eucjp_lead = 0x00;
return 0xFF61 - 0xA1 + bite;
}
// 4. If euc-jp lead is 0x8F and byte is in the range 0xA1 to
// 0xFE, inclusive, set the euc-jp jis0212 flag, set euc-jp lead
// to byte, and return continue.
if (eucjp_lead === 0x8F && inRange(bite, 0xA1, 0xFE)) {
eucjp_jis0212_flag = true;
eucjp_lead = bite;
return null;
}
// 5. If euc-jp lead is not 0x00, let lead be euc-jp lead, set
// euc-jp lead to 0x00, and run these substeps:
if (eucjp_lead !== 0x00) {
var lead = eucjp_lead;
eucjp_lead = 0x00;
// 1. Let code point be null.
var code_point = null;
// 2. If lead and byte are both in the range 0xA1 to 0xFE,
// inclusive, set code point to the index code point for (lead
// − 0xA1) × 94 + byte − 0xA1 in index jis0208 if the euc-jp
// jis0212 flag is unset and in index jis0212 otherwise.
if (inRange(lead, 0xA1, 0xFE) && inRange(bite, 0xA1, 0xFE)) {
code_point = indexCodePointFor(
(lead - 0xA1) * 94 + (bite - 0xA1),
index(!eucjp_jis0212_flag ? 'jis0208' : 'jis0212'));
}
// 3. Unset the euc-jp jis0212 flag.
eucjp_jis0212_flag = false;
// 4. If byte is not in the range 0xA1 to 0xFE, inclusive,
// prepend byte to stream.
if (!inRange(bite, 0xA1, 0xFE))
stream.prepend(bite);
// 5. If code point is null, return error.
if (code_point === null)
return decoderError(fatal);
// 6. Return a code point whose value is code point.
return code_point;
}
// 6. If byte is an ASCII byte, return a code point whose value
// is byte.
if (isASCIIByte(bite))
return bite;
// 7. If byte is 0x8E, 0x8F, or in the range 0xA1 to 0xFE,
// inclusive, set euc-jp lead to byte and return continue.
if (bite === 0x8E || bite === 0x8F || inRange(bite, 0xA1, 0xFE)) {
eucjp_lead = bite;
return null;
}
// 8. Return error.
return decoderError(fatal);
};
}
// 13.1.2 euc-jp encoder
/**
* @constructor
* @implements {Encoder}
* @param {{fatal: boolean}} options
*/
function EUCJPEncoder(options) {
options.fatal;
/**
* @param {Stream} stream Input stream.
* @param {number} code_point Next code point read from the stream.
* @return {(number|!Array.<number>)} Byte(s) to emit.
*/
this.handler = function(stream, code_point) {
// 1. If code point is end-of-stream, return finished.
if (code_point === end_of_stream)
return finished;
// 2. If code point is an ASCII code point, return a byte whose
// value is code point.
if (isASCIICodePoint(code_point))
return code_point;
// 3. If code point is U+00A5, return byte 0x5C.
if (code_point === 0x00A5)
return 0x5C;
// 4. If code point is U+203E, return byte 0x7E.
if (code_point === 0x203E)
return 0x7E;
// 5. If code point is in the range U+FF61 to U+FF9F, inclusive,
// return two bytes whose values are 0x8E and code point −
// 0xFF61 + 0xA1.
if (inRange(code_point, 0xFF61, 0xFF9F))
return [0x8E, code_point - 0xFF61 + 0xA1];
// 6. If code point is U+2212, set it to U+FF0D.
if (code_point === 0x2212)
code_point = 0xFF0D;
// 7. Let pointer be the index pointer for code point in index
// jis0208.
var pointer = indexPointerFor(code_point, index('jis0208'));
// 8. If pointer is null, return error with code point.
if (pointer === null)
return encoderError(code_point);
// 9. Let lead be floor(pointer / 94) + 0xA1.
var lead = floor(pointer / 94) + 0xA1;
// 10. Let trail be pointer % 94 + 0xA1.
var trail = pointer % 94 + 0xA1;
// 11. Return two bytes whose values are lead and trail.
return [lead, trail];
};
}
/** @param {{fatal: boolean}} options */
encoders['EUC-JP'] = function(options) {
return new EUCJPEncoder(options);
};
/** @param {{fatal: boolean}} options */
decoders['EUC-JP'] = function(options) {
return new EUCJPDecoder(options);
};
// 13.2 iso-2022-jp
// 13.2.1 iso-2022-jp decoder
/**
* @constructor
* @implements {Decoder}
* @param {{fatal: boolean}} options
*/
function ISO2022JPDecoder(options) {
var fatal = options.fatal;
/** @enum */
var states = {
ASCII: 0,
Roman: 1,
Katakana: 2,
LeadByte: 3,
TrailByte: 4,
EscapeStart: 5,
Escape: 6
};
// iso-2022-jp's decoder has an associated iso-2022-jp decoder
// state (initially ASCII), iso-2022-jp decoder output state
// (initially ASCII), iso-2022-jp lead (initially 0x00), and
// iso-2022-jp output flag (initially unset).
var /** @type {number} */ iso2022jp_decoder_state = states.ASCII,
/** @type {number} */ iso2022jp_decoder_output_state = states.ASCII,
/** @type {number} */ iso2022jp_lead = 0x00,
/** @type {boolean} */ iso2022jp_output_flag = false;
/**
* @param {Stream} stream The stream of bytes being decoded.
* @param {number} bite The next byte read from the stream.
* @return {?(number|!Array.<number>)} The next code point(s)
* decoded, or null if not enough data exists in the input
* stream to decode a complete code point.
*/
this.handler = function(stream, bite) {
// switching on iso-2022-jp decoder state:
switch (iso2022jp_decoder_state) {
default:
case states.ASCII:
// ASCII
// Based on byte:
// 0x1B
if (bite === 0x1B) {
// Set iso-2022-jp decoder state to escape start and return
// continue.
iso2022jp_decoder_state = states.EscapeStart;
return null;
}
// 0x00 to 0x7F, excluding 0x0E, 0x0F, and 0x1B
if (inRange(bite, 0x00, 0x7F) && bite !== 0x0E
&& bite !== 0x0F && bite !== 0x1B) {
// Unset the iso-2022-jp output flag and return a code point
// whose value is byte.
iso2022jp_output_flag = false;
return bite;
}
// end-of-stream
if (bite === end_of_stream) {
// Return finished.
return finished;
}
// Otherwise
// Unset the iso-2022-jp output flag and return error.
iso2022jp_output_flag = false;
return decoderError(fatal);
case states.Roman:
// Roman
// Based on byte:
// 0x1B
if (bite === 0x1B) {
// Set iso-2022-jp decoder state to escape start and return
// continue.
iso2022jp_decoder_state = states.EscapeStart;
return null;
}
// 0x5C
if (bite === 0x5C) {
// Unset the iso-2022-jp output flag and return code point
// U+00A5.
iso2022jp_output_flag = false;
return 0x00A5;
}
// 0x7E
if (bite === 0x7E) {
// Unset the iso-2022-jp output flag and return code point
// U+203E.
iso2022jp_output_flag = false;
return 0x203E;
}
// 0x00 to 0x7F, excluding 0x0E, 0x0F, 0x1B, 0x5C, and 0x7E
if (inRange(bite, 0x00, 0x7F) && bite !== 0x0E && bite !== 0x0F
&& bite !== 0x1B && bite !== 0x5C && bite !== 0x7E) {
// Unset the iso-2022-jp output flag and return a code point
// whose value is byte.
iso2022jp_output_flag = false;
return bite;
}
// end-of-stream
if (bite === end_of_stream) {
// Return finished.
return finished;
}
// Otherwise
// Unset the iso-2022-jp output flag and return error.
iso2022jp_output_flag = false;
return decoderError(fatal);
case states.Katakana:
// Katakana
// Based on byte:
// 0x1B
if (bite === 0x1B) {
// Set iso-2022-jp decoder state to escape start and return
// continue.
iso2022jp_decoder_state = states.EscapeStart;
return null;
}
// 0x21 to 0x5F
if (inRange(bite, 0x21, 0x5F)) {
// Unset the iso-2022-jp output flag and return a code point
// whose value is 0xFF61 − 0x21 + byte.
iso2022jp_output_flag = false;
return 0xFF61 - 0x21 + bite;
}
// end-of-stream
if (bite === end_of_stream) {
// Return finished.
return finished;
}
// Otherwise
// Unset the iso-2022-jp output flag and return error.
iso2022jp_output_flag = false;
return decoderError(fatal);
case states.LeadByte:
// Lead byte
// Based on byte:
// 0x1B
if (bite === 0x1B) {
// Set iso-2022-jp decoder state to escape start and return
// continue.
iso2022jp_decoder_state = states.EscapeStart;
return null;
}
// 0x21 to 0x7E
if (inRange(bite, 0x21, 0x7E)) {
// Unset the iso-2022-jp output flag, set iso-2022-jp lead
// to byte, iso-2022-jp decoder state to trail byte, and
// return continue.
iso2022jp_output_flag = false;
iso2022jp_lead = bite;
iso2022jp_decoder_state = states.TrailByte;
return null;
}
// end-of-stream
if (bite === end_of_stream) {
// Return finished.
return finished;
}
// Otherwise
// Unset the iso-2022-jp output flag and return error.
iso2022jp_output_flag = false;
return decoderError(fatal);
case states.TrailByte:
// Trail byte
// Based on byte:
// 0x1B
if (bite === 0x1B) {
// Set iso-2022-jp decoder state to escape start and return
// continue.
iso2022jp_decoder_state = states.EscapeStart;
return decoderError(fatal);
}
// 0x21 to 0x7E
if (inRange(bite, 0x21, 0x7E)) {
// 1. Set the iso-2022-jp decoder state to lead byte.
iso2022jp_decoder_state = states.LeadByte;
// 2. Let pointer be (iso-2022-jp lead − 0x21) × 94 + byte − 0x21.
var pointer = (iso2022jp_lead - 0x21) * 94 + bite - 0x21;
// 3. Let code point be the index code point for pointer in
// index jis0208.
var code_point = indexCodePointFor(pointer, index('jis0208'));
// 4. If code point is null, return error.
if (code_point === null)
return decoderError(fatal);
// 5. Return a code point whose value is code point.
return code_point;
}
// end-of-stream
if (bite === end_of_stream) {
// Set the iso-2022-jp decoder state to lead byte, prepend
// byte to stream, and return error.
iso2022jp_decoder_state = states.LeadByte;
stream.prepend(bite);
return decoderError(fatal);
}
// Otherwise
// Set iso-2022-jp decoder state to lead byte and return
// error.
iso2022jp_decoder_state = states.LeadByte;
return decoderError(fatal);
case states.EscapeStart:
// Escape start
// 1. If byte is either 0x24 or 0x28, set iso-2022-jp lead to
// byte, iso-2022-jp decoder state to escape, and return
// continue.
if (bite === 0x24 || bite === 0x28) {
iso2022jp_lead = bite;
iso2022jp_decoder_state = states.Escape;
return null;
}
// 2. Prepend byte to stream.
stream.prepend(bite);
// 3. Unset the iso-2022-jp output flag, set iso-2022-jp
// decoder state to iso-2022-jp decoder output state, and
// return error.
iso2022jp_output_flag = false;
iso2022jp_decoder_state = iso2022jp_decoder_output_state;
return decoderError(fatal);
case states.Escape:
// Escape
// 1. Let lead be iso-2022-jp lead and set iso-2022-jp lead to
// 0x00.
var lead = iso2022jp_lead;
iso2022jp_lead = 0x00;
// 2. Let state be null.
var state = null;
// 3. If lead is 0x28 and byte is 0x42, set state to ASCII.
if (lead === 0x28 && bite === 0x42)
state = states.ASCII;
// 4. If lead is 0x28 and byte is 0x4A, set state to Roman.
if (lead === 0x28 && bite === 0x4A)
state = states.Roman;
// 5. If lead is 0x28 and byte is 0x49, set state to Katakana.
if (lead === 0x28 && bite === 0x49)
state = states.Katakana;
// 6. If lead is 0x24 and byte is either 0x40 or 0x42, set
// state to lead byte.
if (lead === 0x24 && (bite === 0x40 || bite === 0x42))
state = states.LeadByte;
// 7. If state is non-null, run these substeps:
if (state !== null) {
// 1. Set iso-2022-jp decoder state and iso-2022-jp decoder
// output state to states.
iso2022jp_decoder_state = iso2022jp_decoder_state = state;
// 2. Let output flag be the iso-2022-jp output flag.
var output_flag = iso2022jp_output_flag;
// 3. Set the iso-2022-jp output flag.
iso2022jp_output_flag = true;
// 4. Return continue, if output flag is unset, and error
// otherwise.
return !output_flag ? null : decoderError(fatal);
}
// 8. Prepend lead and byte to stream.
stream.prepend([lead, bite]);
// 9. Unset the iso-2022-jp output flag, set iso-2022-jp
// decoder state to iso-2022-jp decoder output state and
// return error.
iso2022jp_output_flag = false;
iso2022jp_decoder_state = iso2022jp_decoder_output_state;
return decoderError(fatal);
}
};
}
// 13.2.2 iso-2022-jp encoder
/**
* @constructor
* @implements {Encoder}
* @param {{fatal: boolean}} options
*/
function ISO2022JPEncoder(options) {
options.fatal;
// iso-2022-jp's encoder has an associated iso-2022-jp encoder
// state which is one of ASCII, Roman, and jis0208 (initially
// ASCII).
/** @enum */
var states = {
ASCII: 0,
Roman: 1,
jis0208: 2
};
var /** @type {number} */ iso2022jp_state = states.ASCII;
/**
* @param {Stream} stream Input stream.
* @param {number} code_point Next code point read from the stream.
* @return {(number|!Array.<number>)} Byte(s) to emit.
*/
this.handler = function(stream, code_point) {
// 1. If code point is end-of-stream and iso-2022-jp encoder
// state is not ASCII, prepend code point to stream, set
// iso-2022-jp encoder state to ASCII, and return three bytes
// 0x1B 0x28 0x42.
if (code_point === end_of_stream &&
iso2022jp_state !== states.ASCII) {
stream.prepend(code_point);
iso2022jp_state = states.ASCII;
return [0x1B, 0x28, 0x42];
}
// 2. If code point is end-of-stream and iso-2022-jp encoder
// state is ASCII, return finished.
if (code_point === end_of_stream && iso2022jp_state === states.ASCII)
return finished;
// 3. If ISO-2022-JP encoder state is ASCII or Roman, and code
// point is U+000E, U+000F, or U+001B, return error with U+FFFD.
if ((iso2022jp_state === states.ASCII ||
iso2022jp_state === states.Roman) &&
(code_point === 0x000E || code_point === 0x000F ||
code_point === 0x001B)) {
return encoderError(0xFFFD);
}
// 4. If iso-2022-jp encoder state is ASCII and code point is an
// ASCII code point, return a byte whose value is code point.
if (iso2022jp_state === states.ASCII &&
isASCIICodePoint(code_point))
return code_point;
// 5. If iso-2022-jp encoder state is Roman and code point is an
// ASCII code point, excluding U+005C and U+007E, or is U+00A5
// or U+203E, run these substeps:
if (iso2022jp_state === states.Roman &&
((isASCIICodePoint(code_point) &&
code_point !== 0x005C && code_point !== 0x007E) ||
(code_point == 0x00A5 || code_point == 0x203E))) {
// 1. If code point is an ASCII code point, return a byte
// whose value is code point.
if (isASCIICodePoint(code_point))
return code_point;
// 2. If code point is U+00A5, return byte 0x5C.
if (code_point === 0x00A5)
return 0x5C;
// 3. If code point is U+203E, return byte 0x7E.
if (code_point === 0x203E)
return 0x7E;
}
// 6. If code point is an ASCII code point, and iso-2022-jp
// encoder state is not ASCII, prepend code point to stream, set
// iso-2022-jp encoder state to ASCII, and return three bytes
// 0x1B 0x28 0x42.
if (isASCIICodePoint(code_point) &&
iso2022jp_state !== states.ASCII) {
stream.prepend(code_point);
iso2022jp_state = states.ASCII;
return [0x1B, 0x28, 0x42];
}
// 7. If code point is either U+00A5 or U+203E, and iso-2022-jp
// encoder state is not Roman, prepend code point to stream, set
// iso-2022-jp encoder state to Roman, and return three bytes
// 0x1B 0x28 0x4A.
if ((code_point === 0x00A5 || code_point === 0x203E) &&
iso2022jp_state !== states.Roman) {
stream.prepend(code_point);
iso2022jp_state = states.Roman;
return [0x1B, 0x28, 0x4A];
}
// 8. If code point is U+2212, set it to U+FF0D.
if (code_point === 0x2212)
code_point = 0xFF0D;
// 9. Let pointer be the index pointer for code point in index
// jis0208.
var pointer = indexPointerFor(code_point, index('jis0208'));
// 10. If pointer is null, return error with code point.
if (pointer === null)
return encoderError(code_point);
// 11. If iso-2022-jp encoder state is not jis0208, prepend code
// point to stream, set iso-2022-jp encoder state to jis0208,
// and return three bytes 0x1B 0x24 0x42.
if (iso2022jp_state !== states.jis0208) {
stream.prepend(code_point);
iso2022jp_state = states.jis0208;
return [0x1B, 0x24, 0x42];
}
// 12. Let lead be floor(pointer / 94) + 0x21.
var lead = floor(pointer / 94) + 0x21;
// 13. Let trail be pointer % 94 + 0x21.
var trail = pointer % 94 + 0x21;
// 14. Return two bytes whose values are lead and trail.
return [lead, trail];
};
}
/** @param {{fatal: boolean}} options */
encoders['ISO-2022-JP'] = function(options) {
return new ISO2022JPEncoder(options);
};
/** @param {{fatal: boolean}} options */
decoders['ISO-2022-JP'] = function(options) {
return new ISO2022JPDecoder(options);
};
// 13.3 Shift_JIS
// 13.3.1 Shift_JIS decoder
/**
* @constructor
* @implements {Decoder}
* @param {{fatal: boolean}} options
*/
function ShiftJISDecoder(options) {
var fatal = options.fatal;
// Shift_JIS's decoder has an associated Shift_JIS lead (initially
// 0x00).
var /** @type {number} */ Shift_JIS_lead = 0x00;
/**
* @param {Stream} stream The stream of bytes being decoded.
* @param {number} bite The next byte read from the stream.
* @return {?(number|!Array.<number>)} The next code point(s)
* decoded, or null if not enough data exists in the input
* stream to decode a complete code point.
*/
this.handler = function(stream, bite) {
// 1. If byte is end-of-stream and Shift_JIS lead is not 0x00,
// set Shift_JIS lead to 0x00 and return error.
if (bite === end_of_stream && Shift_JIS_lead !== 0x00) {
Shift_JIS_lead = 0x00;
return decoderError(fatal);
}
// 2. If byte is end-of-stream and Shift_JIS lead is 0x00,
// return finished.
if (bite === end_of_stream && Shift_JIS_lead === 0x00)
return finished;
// 3. If Shift_JIS lead is not 0x00, let lead be Shift_JIS lead,
// let pointer be null, set Shift_JIS lead to 0x00, and then run
// these substeps:
if (Shift_JIS_lead !== 0x00) {
var lead = Shift_JIS_lead;
var pointer = null;
Shift_JIS_lead = 0x00;
// 1. Let offset be 0x40, if byte is less than 0x7F, and 0x41
// otherwise.
var offset = (bite < 0x7F) ? 0x40 : 0x41;
// 2. Let lead offset be 0x81, if lead is less than 0xA0, and
// 0xC1 otherwise.
var lead_offset = (lead < 0xA0) ? 0x81 : 0xC1;
// 3. If byte is in the range 0x40 to 0x7E, inclusive, or 0x80
// to 0xFC, inclusive, set pointer to (lead − lead offset) ×
// 188 + byte − offset.
if (inRange(bite, 0x40, 0x7E) || inRange(bite, 0x80, 0xFC))
pointer = (lead - lead_offset) * 188 + bite - offset;
// 4. If pointer is in the range 8836 to 10715, inclusive,
// return a code point whose value is 0xE000 − 8836 + pointer.
if (inRange(pointer, 8836, 10715))
return 0xE000 - 8836 + pointer;
// 5. Let code point be null, if pointer is null, and the
// index code point for pointer in index jis0208 otherwise.
var code_point = (pointer === null) ? null :
indexCodePointFor(pointer, index('jis0208'));
// 6. If code point is null and byte is an ASCII byte, prepend
// byte to stream.
if (code_point === null && isASCIIByte(bite))
stream.prepend(bite);
// 7. If code point is null, return error.
if (code_point === null)
return decoderError(fatal);
// 8. Return a code point whose value is code point.
return code_point;
}
// 4. If byte is an ASCII byte or 0x80, return a code point
// whose value is byte.
if (isASCIIByte(bite) || bite === 0x80)
return bite;
// 5. If byte is in the range 0xA1 to 0xDF, inclusive, return a
// code point whose value is 0xFF61 − 0xA1 + byte.
if (inRange(bite, 0xA1, 0xDF))
return 0xFF61 - 0xA1 + bite;
// 6. If byte is in the range 0x81 to 0x9F, inclusive, or 0xE0
// to 0xFC, inclusive, set Shift_JIS lead to byte and return
// continue.
if (inRange(bite, 0x81, 0x9F) || inRange(bite, 0xE0, 0xFC)) {
Shift_JIS_lead = bite;
return null;
}
// 7. Return error.
return decoderError(fatal);
};
}
// 13.3.2 Shift_JIS encoder
/**
* @constructor
* @implements {Encoder}
* @param {{fatal: boolean}} options
*/
function ShiftJISEncoder(options) {
options.fatal;
/**
* @param {Stream} stream Input stream.
* @param {number} code_point Next code point read from the stream.
* @return {(number|!Array.<number>)} Byte(s) to emit.
*/
this.handler = function(stream, code_point) {
// 1. If code point is end-of-stream, return finished.
if (code_point === end_of_stream)
return finished;
// 2. If code point is an ASCII code point or U+0080, return a
// byte whose value is code point.
if (isASCIICodePoint(code_point) || code_point === 0x0080)
return code_point;
// 3. If code point is U+00A5, return byte 0x5C.
if (code_point === 0x00A5)
return 0x5C;
// 4. If code point is U+203E, return byte 0x7E.
if (code_point === 0x203E)
return 0x7E;
// 5. If code point is in the range U+FF61 to U+FF9F, inclusive,
// return a byte whose value is code point − 0xFF61 + 0xA1.
if (inRange(code_point, 0xFF61, 0xFF9F))
return code_point - 0xFF61 + 0xA1;
// 6. If code point is U+2212, set it to U+FF0D.
if (code_point === 0x2212)
code_point = 0xFF0D;
// 7. Let pointer be the index Shift_JIS pointer for code point.
var pointer = indexShiftJISPointerFor(code_point);
// 8. If pointer is null, return error with code point.
if (pointer === null)
return encoderError(code_point);
// 9. Let lead be floor(pointer / 188).
var lead = floor(pointer / 188);
// 10. Let lead offset be 0x81, if lead is less than 0x1F, and
// 0xC1 otherwise.
var lead_offset = (lead < 0x1F) ? 0x81 : 0xC1;
// 11. Let trail be pointer % 188.
var trail = pointer % 188;
// 12. Let offset be 0x40, if trail is less than 0x3F, and 0x41
// otherwise.
var offset = (trail < 0x3F) ? 0x40 : 0x41;
// 13. Return two bytes whose values are lead + lead offset and
// trail + offset.
return [lead + lead_offset, trail + offset];
};
}
/** @param {{fatal: boolean}} options */
encoders['Shift_JIS'] = function(options) {
return new ShiftJISEncoder(options);
};
/** @param {{fatal: boolean}} options */
decoders['Shift_JIS'] = function(options) {
return new ShiftJISDecoder(options);
};
//
// 14. Legacy multi-byte Korean encodings
//
// 14.1 euc-kr
// 14.1.1 euc-kr decoder
/**
* @constructor
* @implements {Decoder}
* @param {{fatal: boolean}} options
*/
function EUCKRDecoder(options) {
var fatal = options.fatal;
// euc-kr's decoder has an associated euc-kr lead (initially 0x00).
var /** @type {number} */ euckr_lead = 0x00;
/**
* @param {Stream} stream The stream of bytes being decoded.
* @param {number} bite The next byte read from the stream.
* @return {?(number|!Array.<number>)} The next code point(s)
* decoded, or null if not enough data exists in the input
* stream to decode a complete code point.
*/
this.handler = function(stream, bite) {
// 1. If byte is end-of-stream and euc-kr lead is not 0x00, set
// euc-kr lead to 0x00 and return error.
if (bite === end_of_stream && euckr_lead !== 0) {
euckr_lead = 0x00;
return decoderError(fatal);
}
// 2. If byte is end-of-stream and euc-kr lead is 0x00, return
// finished.
if (bite === end_of_stream && euckr_lead === 0)
return finished;
// 3. If euc-kr lead is not 0x00, let lead be euc-kr lead, let
// pointer be null, set euc-kr lead to 0x00, and then run these
// substeps:
if (euckr_lead !== 0x00) {
var lead = euckr_lead;
var pointer = null;
euckr_lead = 0x00;
// 1. If byte is in the range 0x41 to 0xFE, inclusive, set
// pointer to (lead − 0x81) × 190 + (byte − 0x41).
if (inRange(bite, 0x41, 0xFE))
pointer = (lead - 0x81) * 190 + (bite - 0x41);
// 2. Let code point be null, if pointer is null, and the
// index code point for pointer in index euc-kr otherwise.
var code_point = (pointer === null)
? null : indexCodePointFor(pointer, index('euc-kr'));
// 3. If code point is null and byte is an ASCII byte, prepend
// byte to stream.
if (pointer === null && isASCIIByte(bite))
stream.prepend(bite);
// 4. If code point is null, return error.
if (code_point === null)
return decoderError(fatal);
// 5. Return a code point whose value is code point.
return code_point;
}
// 4. If byte is an ASCII byte, return a code point whose value
// is byte.
if (isASCIIByte(bite))
return bite;
// 5. If byte is in the range 0x81 to 0xFE, inclusive, set
// euc-kr lead to byte and return continue.
if (inRange(bite, 0x81, 0xFE)) {
euckr_lead = bite;
return null;
}
// 6. Return error.
return decoderError(fatal);
};
}
// 14.1.2 euc-kr encoder
/**
* @constructor
* @implements {Encoder}
* @param {{fatal: boolean}} options
*/
function EUCKREncoder(options) {
options.fatal;
/**
* @param {Stream} stream Input stream.
* @param {number} code_point Next code point read from the stream.
* @return {(number|!Array.<number>)} Byte(s) to emit.
*/
this.handler = function(stream, code_point) {
// 1. If code point is end-of-stream, return finished.
if (code_point === end_of_stream)
return finished;
// 2. If code point is an ASCII code point, return a byte whose
// value is code point.
if (isASCIICodePoint(code_point))
return code_point;
// 3. Let pointer be the index pointer for code point in index
// euc-kr.
var pointer = indexPointerFor(code_point, index('euc-kr'));
// 4. If pointer is null, return error with code point.
if (pointer === null)
return encoderError(code_point);
// 5. Let lead be floor(pointer / 190) + 0x81.
var lead = floor(pointer / 190) + 0x81;
// 6. Let trail be pointer % 190 + 0x41.
var trail = (pointer % 190) + 0x41;
// 7. Return two bytes whose values are lead and trail.
return [lead, trail];
};
}
/** @param {{fatal: boolean}} options */
encoders['EUC-KR'] = function(options) {
return new EUCKREncoder(options);
};
/** @param {{fatal: boolean}} options */
decoders['EUC-KR'] = function(options) {
return new EUCKRDecoder(options);
};
//
// 15. Legacy miscellaneous encodings
//
// 15.1 replacement
// Not needed - API throws RangeError
// 15.2 Common infrastructure for utf-16be and utf-16le
/**
* @param {number} code_unit
* @param {boolean} utf16be
* @return {!Array.<number>} bytes
*/
function convertCodeUnitToBytes(code_unit, utf16be) {
// 1. Let byte1 be code unit >> 8.
var byte1 = code_unit >> 8;
// 2. Let byte2 be code unit & 0x00FF.
var byte2 = code_unit & 0x00FF;
// 3. Then return the bytes in order:
// utf-16be flag is set: byte1, then byte2.
if (utf16be)
return [byte1, byte2];
// utf-16be flag is unset: byte2, then byte1.
return [byte2, byte1];
}
// 15.2.1 shared utf-16 decoder
/**
* @constructor
* @implements {Decoder}
* @param {boolean} utf16_be True if big-endian, false if little-endian.
* @param {{fatal: boolean}} options
*/
function UTF16Decoder(utf16_be, options) {
var fatal = options.fatal;
var /** @type {?number} */ utf16_lead_byte = null,
/** @type {?number} */ utf16_lead_surrogate = null;
/**
* @param {Stream} stream The stream of bytes being decoded.
* @param {number} bite The next byte read from the stream.
* @return {?(number|!Array.<number>)} The next code point(s)
* decoded, or null if not enough data exists in the input
* stream to decode a complete code point.
*/
this.handler = function(stream, bite) {
// 1. If byte is end-of-stream and either utf-16 lead byte or
// utf-16 lead surrogate is not null, set utf-16 lead byte and
// utf-16 lead surrogate to null, and return error.
if (bite === end_of_stream && (utf16_lead_byte !== null ||
utf16_lead_surrogate !== null)) {
return decoderError(fatal);
}
// 2. If byte is end-of-stream and utf-16 lead byte and utf-16
// lead surrogate are null, return finished.
if (bite === end_of_stream && utf16_lead_byte === null &&
utf16_lead_surrogate === null) {
return finished;
}
// 3. If utf-16 lead byte is null, set utf-16 lead byte to byte
// and return continue.
if (utf16_lead_byte === null) {
utf16_lead_byte = bite;
return null;
}
// 4. Let code unit be the result of:
var code_unit;
if (utf16_be) {
// utf-16be decoder flag is set
// (utf-16 lead byte << 8) + byte.
code_unit = (utf16_lead_byte << 8) + bite;
} else {
// utf-16be decoder flag is unset
// (byte << 8) + utf-16 lead byte.
code_unit = (bite << 8) + utf16_lead_byte;
}
// Then set utf-16 lead byte to null.
utf16_lead_byte = null;
// 5. If utf-16 lead surrogate is not null, let lead surrogate
// be utf-16 lead surrogate, set utf-16 lead surrogate to null,
// and then run these substeps:
if (utf16_lead_surrogate !== null) {
var lead_surrogate = utf16_lead_surrogate;
utf16_lead_surrogate = null;
// 1. If code unit is in the range U+DC00 to U+DFFF,
// inclusive, return a code point whose value is 0x10000 +
// ((lead surrogate − 0xD800) << 10) + (code unit − 0xDC00).
if (inRange(code_unit, 0xDC00, 0xDFFF)) {
return 0x10000 + (lead_surrogate - 0xD800) * 0x400 +
(code_unit - 0xDC00);
}
// 2. Prepend the sequence resulting of converting code unit
// to bytes using utf-16be decoder flag to stream and return
// error.
stream.prepend(convertCodeUnitToBytes(code_unit, utf16_be));
return decoderError(fatal);
}
// 6. If code unit is in the range U+D800 to U+DBFF, inclusive,
// set utf-16 lead surrogate to code unit and return continue.
if (inRange(code_unit, 0xD800, 0xDBFF)) {
utf16_lead_surrogate = code_unit;
return null;
}
// 7. If code unit is in the range U+DC00 to U+DFFF, inclusive,
// return error.
if (inRange(code_unit, 0xDC00, 0xDFFF))
return decoderError(fatal);
// 8. Return code point code unit.
return code_unit;
};
}
// 15.2.2 shared utf-16 encoder
/**
* @constructor
* @implements {Encoder}
* @param {boolean} utf16_be True if big-endian, false if little-endian.
* @param {{fatal: boolean}} options
*/
function UTF16Encoder(utf16_be, options) {
options.fatal;
/**
* @param {Stream} stream Input stream.
* @param {number} code_point Next code point read from the stream.
* @return {(number|!Array.<number>)} Byte(s) to emit.
*/
this.handler = function(stream, code_point) {
// 1. If code point is end-of-stream, return finished.
if (code_point === end_of_stream)
return finished;
// 2. If code point is in the range U+0000 to U+FFFF, inclusive,
// return the sequence resulting of converting code point to
// bytes using utf-16be encoder flag.
if (inRange(code_point, 0x0000, 0xFFFF))
return convertCodeUnitToBytes(code_point, utf16_be);
// 3. Let lead be ((code point − 0x10000) >> 10) + 0xD800,
// converted to bytes using utf-16be encoder flag.
var lead = convertCodeUnitToBytes(
((code_point - 0x10000) >> 10) + 0xD800, utf16_be);
// 4. Let trail be ((code point − 0x10000) & 0x3FF) + 0xDC00,
// converted to bytes using utf-16be encoder flag.
var trail = convertCodeUnitToBytes(
((code_point - 0x10000) & 0x3FF) + 0xDC00, utf16_be);
// 5. Return a byte sequence of lead followed by trail.
return lead.concat(trail);
};
}
// 15.3 utf-16be
// 15.3.1 utf-16be decoder
/** @param {{fatal: boolean}} options */
encoders['UTF-16BE'] = function(options) {
return new UTF16Encoder(true, options);
};
// 15.3.2 utf-16be encoder
/** @param {{fatal: boolean}} options */
decoders['UTF-16BE'] = function(options) {
return new UTF16Decoder(true, options);
};
// 15.4 utf-16le
// 15.4.1 utf-16le decoder
/** @param {{fatal: boolean}} options */
encoders['UTF-16LE'] = function(options) {
return new UTF16Encoder(false, options);
};
// 15.4.2 utf-16le encoder
/** @param {{fatal: boolean}} options */
decoders['UTF-16LE'] = function(options) {
return new UTF16Decoder(false, options);
};
// 15.5 x-user-defined
// 15.5.1 x-user-defined decoder
/**
* @constructor
* @implements {Decoder}
* @param {{fatal: boolean}} options
*/
function XUserDefinedDecoder(options) {
options.fatal;
/**
* @param {Stream} stream The stream of bytes being decoded.
* @param {number} bite The next byte read from the stream.
* @return {?(number|!Array.<number>)} The next code point(s)
* decoded, or null if not enough data exists in the input
* stream to decode a complete code point.
*/
this.handler = function(stream, bite) {
// 1. If byte is end-of-stream, return finished.
if (bite === end_of_stream)
return finished;
// 2. If byte is an ASCII byte, return a code point whose value
// is byte.
if (isASCIIByte(bite))
return bite;
// 3. Return a code point whose value is 0xF780 + byte − 0x80.
return 0xF780 + bite - 0x80;
};
}
// 15.5.2 x-user-defined encoder
/**
* @constructor
* @implements {Encoder}
* @param {{fatal: boolean}} options
*/
function XUserDefinedEncoder(options) {
options.fatal;
/**
* @param {Stream} stream Input stream.
* @param {number} code_point Next code point read from the stream.
* @return {(number|!Array.<number>)} Byte(s) to emit.
*/
this.handler = function(stream, code_point) {
// 1.If code point is end-of-stream, return finished.
if (code_point === end_of_stream)
return finished;
// 2. If code point is an ASCII code point, return a byte whose
// value is code point.
if (isASCIICodePoint(code_point))
return code_point;
// 3. If code point is in the range U+F780 to U+F7FF, inclusive,
// return a byte whose value is code point − 0xF780 + 0x80.
if (inRange(code_point, 0xF780, 0xF7FF))
return code_point - 0xF780 + 0x80;
// 4. Return error with code point.
return encoderError(code_point);
};
}
/** @param {{fatal: boolean}} options */
encoders['x-user-defined'] = function(options) {
return new XUserDefinedEncoder(options);
};
/** @param {{fatal: boolean}} options */
decoders['x-user-defined'] = function(options) {
return new XUserDefinedDecoder(options);
};
if (!global['TextEncoder'])
global['TextEncoder'] = TextEncoder;
if (!global['TextDecoder'])
global['TextDecoder'] = TextDecoder;
if (module.exports) {
module.exports = {
TextEncoder: global['TextEncoder'],
TextDecoder: global['TextDecoder'],
EncodingIndexes: global["encoding-indexes"]
};
}
// For strict environments where `this` inside the global scope
// is `undefined`, take a pure object instead
}(commonjsGlobal || {}));
} (encoding));
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var isBufferEncoding = Buffer.isEncoding
|| function(encoding) {
switch (encoding && encoding.toLowerCase()) {
case 'hex': case 'utf8': case 'utf-8': case 'ascii': case 'binary': case 'base64': case 'ucs2': case 'ucs-2': case 'utf16le': case 'utf-16le': case 'raw': return true;
default: return false;
}
};
function assertEncoding(encoding) {
if (encoding && !isBufferEncoding(encoding)) {
throw new Error('Unknown encoding: ' + encoding);
}
}
// StringDecoder provides an interface for efficiently splitting a series of
// buffers into a series of JS strings without breaking apart multi-byte
// characters. CESU-8 is handled as part of the UTF-8 encoding.
//
// @TODO Handling all encodings inside a single object makes it very difficult
// to reason about this code, so it should be split up in the future.
// @TODO There should be a utf8-strict encoding that rejects invalid UTF-8 code
// points as used by CESU-8.
function StringDecoder$1(encoding) {
this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, '');
assertEncoding(encoding);
switch (this.encoding) {
case 'utf8':
// CESU-8 represents each of Surrogate Pair by 3-bytes
this.surrogateSize = 3;
break;
case 'ucs2':
case 'utf16le':
// UTF-16 represents each of Surrogate Pair by 2-bytes
this.surrogateSize = 2;
this.detectIncompleteChar = utf16DetectIncompleteChar;
break;
case 'base64':
// Base-64 stores 3 bytes in 4 chars, and pads the remainder.
this.surrogateSize = 3;
this.detectIncompleteChar = base64DetectIncompleteChar;
break;
default:
this.write = passThroughWrite;
return;
}
// Enough space to store all bytes of a single character. UTF-8 needs 4
// bytes, but CESU-8 may require up to 6 (3 bytes per surrogate).
this.charBuffer = new Buffer(6);
// Number of bytes received for the current incomplete multi-byte character.
this.charReceived = 0;
// Number of bytes expected for the current incomplete multi-byte character.
this.charLength = 0;
}
// write decodes the given buffer and returns it as JS string that is
// guaranteed to not contain any partial multi-byte characters. Any partial
// character found at the end of the buffer is buffered up, and will be
// returned when calling write again with the remaining bytes.
//
// Note: Converting a Buffer containing an orphan surrogate to a String
// currently works, but converting a String to a Buffer (via `new Buffer`, or
// Buffer#write) will replace incomplete surrogates with the unicode
// replacement character. See https://codereview.chromium.org/121173009/ .
StringDecoder$1.prototype.write = function(buffer) {
var charStr = '';
// if our last write ended with an incomplete multibyte character
while (this.charLength) {
// determine how many remaining bytes this buffer has to offer for this char
var available = (buffer.length >= this.charLength - this.charReceived) ?
this.charLength - this.charReceived :
buffer.length;
// add the new bytes to the char buffer
buffer.copy(this.charBuffer, this.charReceived, 0, available);
this.charReceived += available;
if (this.charReceived < this.charLength) {
// still not enough chars in this buffer? wait for more ...
return '';
}
// remove bytes belonging to the current character from the buffer
buffer = buffer.slice(available, buffer.length);
// get the character that was split
charStr = this.charBuffer.slice(0, this.charLength).toString(this.encoding);
// CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
var charCode = charStr.charCodeAt(charStr.length - 1);
if (charCode >= 0xD800 && charCode <= 0xDBFF) {
this.charLength += this.surrogateSize;
charStr = '';
continue;
}
this.charReceived = this.charLength = 0;
// if there are no more bytes in this buffer, just emit our char
if (buffer.length === 0) {
return charStr;
}
break;
}
// determine and set charLength / charReceived
this.detectIncompleteChar(buffer);
var end = buffer.length;
if (this.charLength) {
// buffer the incomplete character bytes we got
buffer.copy(this.charBuffer, 0, buffer.length - this.charReceived, end);
end -= this.charReceived;
}
charStr += buffer.toString(this.encoding, 0, end);
var end = charStr.length - 1;
var charCode = charStr.charCodeAt(end);
// CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
if (charCode >= 0xD800 && charCode <= 0xDBFF) {
var size = this.surrogateSize;
this.charLength += size;
this.charReceived += size;
this.charBuffer.copy(this.charBuffer, size, 0, size);
buffer.copy(this.charBuffer, 0, 0, size);
return charStr.substring(0, end);
}
// or just emit the charStr
return charStr;
};
// detectIncompleteChar determines if there is an incomplete UTF-8 character at
// the end of the given buffer. If so, it sets this.charLength to the byte
// length that character, and sets this.charReceived to the number of bytes
// that are available for this character.
StringDecoder$1.prototype.detectIncompleteChar = function(buffer) {
// determine how many bytes we have to check at the end of this buffer
var i = (buffer.length >= 3) ? 3 : buffer.length;
// Figure out if one of the last i bytes of our buffer announces an
// incomplete char.
for (; i > 0; i--) {
var c = buffer[buffer.length - i];
// See http://en.wikipedia.org/wiki/UTF-8#Description
// 110XXXXX
if (i == 1 && c >> 5 == 0x06) {
this.charLength = 2;
break;
}
// 1110XXXX
if (i <= 2 && c >> 4 == 0x0E) {
this.charLength = 3;
break;
}
// 11110XXX
if (i <= 3 && c >> 3 == 0x1E) {
this.charLength = 4;
break;
}
}
this.charReceived = i;
};
StringDecoder$1.prototype.end = function(buffer) {
var res = '';
if (buffer && buffer.length)
res = this.write(buffer);
if (this.charReceived) {
var cr = this.charReceived;
var buf = this.charBuffer;
var enc = this.encoding;
res += buf.slice(0, cr).toString(enc);
}
return res;
};
function passThroughWrite(buffer) {
return buffer.toString(this.encoding);
}
function utf16DetectIncompleteChar(buffer) {
this.charReceived = buffer.length % 2;
this.charLength = this.charReceived ? 2 : 0;
}
function base64DetectIncompleteChar(buffer) {
this.charReceived = buffer.length % 3;
this.charLength = this.charReceived ? 3 : 0;
}
var stringDecoder = /*#__PURE__*/Object.freeze({
__proto__: null,
StringDecoder: StringDecoder$1
});
var require$$1 = /*@__PURE__*/getAugmentedNamespace(stringDecoder);
var StringDecoder = require$$1.StringDecoder;
function defaultDecoder(data) {
var decoder = new StringDecoder();
var out = decoder.write(data) + decoder.end();
return out.replace(/\0/g, '').trim();
}
var decoderBrowser = createDecoder$1;
var regex = /^(?:ANSI\s)?(\d+)$/m;
function createDecoder$1(encoding, second) {
if (!encoding) {
return defaultDecoder;
}
try {
new TextDecoder(encoding.trim());
} catch(e) {
var match = regex.exec(encoding);
if (match && !second) {
return createDecoder$1('windows-' + match[1], true);
} else {
return defaultDecoder;
}
}
return browserDecoder;
function browserDecoder(buffer) {
var decoder = new TextDecoder(encoding);
var out = decoder.decode(buffer, {
stream: true
}) + decoder.decode();
return out.replace(/\0/g, '').trim();
}
}
var createDecoder = decoderBrowser;
function dbfHeader(data) {
var out = {};
out.lastUpdated = new Date(data.readUInt8(1) + 1900, data.readUInt8(2), data.readUInt8(3));
out.records = data.readUInt32LE(4);
out.headerLen = data.readUInt16LE(8);
out.recLen = data.readUInt16LE(10);
return out;
}
function dbfRowHeader(data, headerLen, decoder) {
var out = [];
var offset = 32;
while (offset < headerLen) {
out.push({
name: decoder(data.slice(offset, offset + 11)),
dataType: String.fromCharCode(data.readUInt8(offset + 11)),
len: data.readUInt8(offset + 16),
decimal: data.readUInt8(offset + 17)
});
if (data.readUInt8(offset + 32) === 13) {
break;
} else {
offset += 32;
}
}
return out;
}
function rowFuncs(buffer, offset, len, type, decoder) {
var data = buffer.slice(offset, offset + len);
var textData = decoder(data);
switch (type) {
case 'N':
case 'F':
case 'O':
return parseFloat(textData, 10);
case 'D':
return new Date(textData.slice(0, 4), parseInt(textData.slice(4, 6), 10) - 1, textData.slice(6, 8));
case 'L':
return textData.toLowerCase() === 'y' || textData.toLowerCase() === 't';
default:
return textData;
}
}
function parseRow(buffer, offset, rowHeaders, decoder) {
var out = {};
var i = 0;
var len = rowHeaders.length;
var field;
var header;
while (i < len) {
header = rowHeaders[i];
field = rowFuncs(buffer, offset, header.len, header.dataType, decoder);
offset += header.len;
if (typeof field !== 'undefined') {
out[header.name] = field;
}
i++;
}
return out;
}
var parsedbf = function(buffer, encoding) {
var decoder = createDecoder(encoding);
var header = dbfHeader(buffer);
var rowHeaders = dbfRowHeader(buffer, header.headerLen - 1, decoder);
var offset = ((rowHeaders.length + 1) << 5) + 2;
var recLen = header.recLen;
var records = header.records;
var out = [];
while (records) {
out.push(parseRow(buffer, offset, rowHeaders, decoder));
offset += recLen;
records--;
}
return out;
};
var parseDbf = /*@__PURE__*/getDefaultExportFromCjs(parsedbf);
const URL = globalThis.URL;
function toBuffer(b) {
if (!b) {
throw new Error('forgot to pass buffer');
}
if (Buffer.isBuffer(b)) {
return b;
}
if (isArrayBuffer(b)) {
return Buffer.from(b);
}
if (isArrayBuffer(b.buffer)) {
if (b.BYTES_PER_ELEMENT === 1) {
return Buffer.from(b);
}
return Buffer.from(b.buffer);
}
}
function isArrayBuffer(subject) {
return subject instanceof globalThis.ArrayBuffer || Object.prototype.toString.call(subject) === '[object ArrayBuffer]';
}
const combine = function ([shp, dbf]) {
const out = {};
out.type = 'FeatureCollection';
out.features = [];
let i = 0;
const len = shp.length;
if (!dbf) {
dbf = [];
}
while (i < len) {
out.features.push({
type: 'Feature',
geometry: shp[i],
properties: dbf[i] || {}
});
i++;
}
return out;
};
const parseZip = async function (buffer, whiteList) {
let key;
buffer = toBuffer(buffer);
const zip = await unzip(buffer);
const names = [];
whiteList = whiteList || [];
for (key in zip) {
if (key.indexOf('__MACOSX') !== -1) {
continue;
}
if (key.slice(-4).toLowerCase() === '.shp') {
names.push(key.slice(0, -4));
zip[key.slice(0, -3) + key.slice(-3).toLowerCase()] = zip[key];
} else if (key.slice(-4).toLowerCase() === '.prj') {
zip[key.slice(0, -3) + key.slice(-3).toLowerCase()] = proj4(zip[key]);
} else if (key.slice(-5).toLowerCase() === '.json' || whiteList.indexOf(key.split('.').pop()) > -1) {
names.push(key.slice(0, -3) + key.slice(-3).toLowerCase());
} else if (key.slice(-4).toLowerCase() === '.dbf' || key.slice(-4).toLowerCase() === '.cpg') {
zip[key.slice(0, -3) + key.slice(-3).toLowerCase()] = zip[key];
}
}
if (!names.length) {
throw new Error('no layers founds');
}
const geojson = names.map(function (name) {
let parsed, dbf;
const lastDotIdx = name.lastIndexOf('.');
if (lastDotIdx > -1 && name.slice(lastDotIdx).indexOf('json') > -1) {
parsed = JSON.parse(zip[name]);
parsed.fileName = name.slice(0, lastDotIdx);
} else if (whiteList.indexOf(name.slice(lastDotIdx + 1)) > -1) {
parsed = zip[name];
parsed.fileName = name;
} else {
if (zip[name + '.dbf']) {
dbf = parseDbf(zip[name + '.dbf'], zip[name + '.cpg']);
}
parsed = combine([parseShp(zip[name + '.shp'], zip[name + '.prj']), dbf]);
parsed.fileName = name;
}
return parsed;
});
if (geojson.length === 1) {
return geojson[0];
} else {
return geojson;
}
};
async function getZip(base, whiteList) {
const a = await binaryAjax(base);
return parseZip(a, whiteList);
}
const handleShp = async (base) => {
const args = await Promise.all([
binaryAjax(base, 'shp'),
binaryAjax(base, 'prj')
]);
let prj = false;
try {
if (args[1]) {
prj = proj4(args[1]);
}
} catch (e) {
prj = false;
}
return parseShp(args[0], prj);
};
const handleDbf = async (base) => {
const [dbf, cpg] = await Promise.all([
binaryAjax(base, 'dbf'),
binaryAjax(base, 'cpg')
]);
if (!dbf) {
return;
}
return parseDbf(dbf, cpg);
};
const checkSuffix = (base, suffix) => {
const url = new URL(base);
return url.pathname.slice(-4).toLowerCase() === suffix;
};
const getShapefile = async function (base, whiteList) {
if (typeof base !== 'string') {
return parseZip(base);
}
if (checkSuffix(base, '.zip')) {
return getZip(base, whiteList);
}
const results = await Promise.all([
handleShp(base),
handleDbf(base)
]);
return combine(results);
};
const _parseShp = function (shp, prj) {
shp = toBuffer(shp);
if (Buffer.isBuffer(prj)) {
prj = prj.toString();
}
if (typeof prj === 'string') {
try {
prj = proj4(prj);
} catch (e) {
prj = false;
}
}
return parseShp(shp, prj);
};
const _parseDbf = function (dbf, cpg) {
dbf = toBuffer(dbf);
return parseDbf(dbf, cpg);
};
getShapefile.combine = combine;
getShapefile.parseDbf = _parseDbf;
getShapefile.parseZip = parseZip;
getShapefile.parseShp = _parseShp;
return getShapefile;
}));