211 lines
5.2 KiB
JavaScript
211 lines
5.2 KiB
JavaScript
var MCBAND = [12890594.86, 8362377.87, 5591021, 3481989.83,
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1678043.12, 0
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];
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var LLBAND = [75, 60, 45, 30, 15, 0];
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var MC2LL = [
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[1.410526172116255e-8, 0.00000898305509648872, -1.9939833816331, 200.9824383106796, -187.2403703815547, 91.6087516669843, -23.38765649603339, 2.57121317296198, -0.03801003308653, 17337981.2],
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[-7.435856389565537e-9, 0.000008983055097726239, -0.78625201886289, 96.32687599759846, -1.85204757529826, -59.36935905485877,
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47.40033549296737, -16.50741931063887,
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2.28786674699375, 10260144.86
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],
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[-3.030883460898826e-8, 0.00000898305509983578,
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0.30071316287616, 59.74293618442277,
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7.357984074871, -25.38371002664745,
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13.45380521110908, -3.29883767235584,
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0.32710905363475, 6856817.37
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],
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[-1.981981304930552e-8, 0.000008983055099779535,
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0.03278182852591, 40.31678527705744,
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0.65659298677277, -4.44255534477492,
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0.85341911805263, 0.12923347998204, -0.04625736007561, 4482777.06
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],
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[3.09191371068437e-9, 0.000008983055096812155,
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0.00006995724062, 23.10934304144901, -0.00023663490511, -0.6321817810242, -0.00663494467273, 0.03430082397953, -0.00466043876332, 2555164.4
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],
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[2.890871144776878e-9, 0.000008983055095805407, -3.068298e-8, 7.47137025468032, -0.00000353937994, -0.02145144861037, -0.00001234426596, 0.00010322952773, -0.00000323890364, 826088.5]
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];
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var LL2MC = [
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[-0.0015702102444, 111320.7020616939,
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1704480524535203, -10338987376042340,
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26112667856603880, -35149669176653700,
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26595700718403920, -10725012454188240,
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1800819912950474, 82.5
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],
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[0.0008277824516172526, 111320.7020463578,
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647795574.6671607, -4082003173.641316,
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10774905663.51142, -15171875531.51559,
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12053065338.62167, -5124939663.577472,
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913311935.9512032, 67.5
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],
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[0.00337398766765, 111320.7020202162,
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4481351.045890365, -23393751.19931662,
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79682215.47186455, -115964993.2797253,
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97236711.15602145, -43661946.33752821,
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8477230.501135234, 52.5
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],
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[0.00220636496208, 111320.7020209128,
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51751.86112841131, 3796837.749470245,
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992013.7397791013, -1221952.21711287,
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1340652.697009075, -620943.6990984312,
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144416.9293806241, 37.5
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],
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[-0.0003441963504368392, 111320.7020576856,
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278.2353980772752, 2485758.690035394,
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6070.750963243378, 54821.18345352118,
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9540.606633304236, -2710.55326746645,
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1405.483844121726, 22.5
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],
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[-0.0003218135878613132, 111320.7020701615,
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0.00369383431289, 823725.6402795718,
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0.46104986909093, 2351.343141331292,
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1.58060784298199, 8.77738589078284,
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0.37238884252424, 7.45
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]
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];
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function lngLatToMercator(T) {
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var c = new cd(T[0], T[1]);
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var r = convertLL2MC(c);
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return [r.lng, r.lat];
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}
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function mercatorToLngLat(T) {
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var c = new cd(T[0], T[1]);
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var r = convertMC2LL(c);
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return [r.lng, r.lat];
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}
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function convertLL2MC(T) {
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var cL, cN;
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T.lng = getLoop(T.lng, -180, 180);
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T.lat = getRange(T.lat, -74, 74);
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cL = new cd(T.lng, T.lat);
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for(var cM = 0; cM < LLBAND.length; cM++) {
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if(cL.lat >= LLBAND[cM]) {
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cN = LL2MC[cM];
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break
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}
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}
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if(!cN) {
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for(var cM = LLBAND.length - 1; cM >= 0; cM--) {
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if(cL.lat <= -LLBAND[cM]) {
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cN = LL2MC[cM];
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break
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}
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}
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}
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var cO = convertor(T, cN);
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var T = new cd(cO.lng.toFixed(2), cO.lat.toFixed(2));
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return T
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}
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function convertMC2LL(cL) {
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var cM, cO;
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cM = new cd(Math.abs(cL.lng), Math.abs(cL.lat));
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for(var cN = 0; cN < MCBAND.length; cN++) {
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if(cM.lat >= MCBAND[cN]) {
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cO = MC2LL[cN];
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break
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}
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}
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var T = convertor(cL, cO);
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var cL = new cd(T.lng.toFixed(6), T.lat.toFixed(6));
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return cL
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}
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function getRange(cM, cL, T) {
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if(cL != null) {
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cM = Math.max(cM, cL)
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}
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if(T != null) {
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cM = Math.min(cM, T)
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}
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return cM
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}
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function getLoop(cM, cL, T) {
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while(cM > T) {
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cM -= T - cL
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}
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while(cM < cL) {
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cM += T - cL
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}
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return cM
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}
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function convertor(cM, cN) {
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if(!cM || !cN) {
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return
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}
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var T = cN[0] + cN[1] * Math.abs(cM.lng);
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var cL = Math.abs(cM.lat) / cN[9];
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var cO = cN[2] + cN[3] * cL + cN[4] * cL * cL + cN[5] * cL *
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cL * cL + cN[6] * cL * cL * cL * cL + cN[7] * cL *
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cL * cL * cL * cL + cN[8] * cL * cL * cL * cL *
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cL * cL;
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T *= (cM.lng < 0 ? -1 : 1);
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cO *= (cM.lat < 0 ? -1 : 1);
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return new cd(T, cO)
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}
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function cd(T, cL) {
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if(isNaN(T)) {
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T = bV(T);
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T = isNaN(T) ? 0 : T
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}
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if(b3(T)) {
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T = parseFloat(T)
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}
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if(isNaN(cL)) {
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cL = bV(cL);
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cL = isNaN(cL) ? 0 : cL
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}
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if(b3(cL)) {
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cL = parseFloat(cL)
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}
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this.lng = T;
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this.lat = cL
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}
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cd.isInRange = function(T) {
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return T && T.lng <= 180 && T.lng >= -180 && T.lat <= 74 &&
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T.lat >= -74
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};
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cd.prototype.equals = function(T) {
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return T && lat == T.lat && lng == T.lng
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};
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function bV(cN) {
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var cL = "";
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var cU, cS, cQ = "";
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var cT, cR, cP, cO = "";
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var cM = 0;
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var T = /[^A-Za-z0-9\+\/\=]/g;
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if(!cN || T.exec(cN)) {
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return cN
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}
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cN = cN.replace(/[^A-Za-z0-9\+\/\=]/g, "");
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do {
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cT = cf.indexOf(cN.charAt(cM++));
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cR = cf.indexOf(cN.charAt(cM++));
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cP = cf.indexOf(cN.charAt(cM++));
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cO = cf.indexOf(cN.charAt(cM++));
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cU = (cT << 2) | (cR >> 4);
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cS = ((cR & 15) << 4) | (cP >> 2);
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cQ = ((cP & 3) << 6) | cO;
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cL = cL + String.fromCharCode(cU);
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if(cP != 64) {
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cL = cL + String.fromCharCode(cS)
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}
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if(cO != 64) {
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cL = cL + String.fromCharCode(cQ)
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}
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cU = cS = cQ = "";
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cT = cR = cP = cO = ""
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} while (cM < cN.length);
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return cL
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}
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function b3(T) {
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return typeof T == "string"
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} |