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var $module=(function($B){
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var _b_ = $B.builtins,
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_keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="
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function make_alphabet(altchars){
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var alphabet = _keyStr
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if(altchars!==undefined && altchars!==_b_.None){
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// altchars is an instance of Python bytes
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var source = altchars.source
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alphabet = alphabet.substr(0,alphabet.length-3)+
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_b_.chr(source[0])+_b_.chr(source[1])+'='
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}
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return alphabet
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}
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var Base64 = {
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encode: function(bytes, altchars) {
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var input = bytes.source
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var output = "";
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var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
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var i = 0;
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var alphabet = make_alphabet(altchars)
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while (i < input.length) {
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chr1 = input[i++];
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chr2 = input[i++];
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chr3 = input[i++];
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enc1 = chr1 >> 2;
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enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
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enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
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enc4 = chr3 & 63;
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if (isNaN(chr2)) {
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enc3 = enc4 = 64;
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} else if (isNaN(chr3)) {
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enc4 = 64;
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}
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output = output + alphabet.charAt(enc1) +
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alphabet.charAt(enc2) +
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alphabet.charAt(enc3) +
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alphabet.charAt(enc4);
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}
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return _b_.bytes(output, 'utf-8', 'strict');
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},
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decode: function(bytes, altchars, validate) {
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var output = [];
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var chr1, chr2, chr3;
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var enc1, enc2, enc3, enc4;
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var alphabet = make_alphabet(altchars)
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var input = bytes.source
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// If validate is set, check that all characters in input
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// are in the alphabet
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var _input = ''
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for(var i=0, len=input.length;i<len;i++){
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var car = String.fromCharCode(input[i])
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if(alphabet.search(car)==-1){
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if(validate){throw 'binascii_error'}
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}else{_input+=car}
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}
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input = _input;
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var i = 0;
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while (i < input.length) {
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enc1 = alphabet.indexOf(input.charAt(i++));
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enc2 = alphabet.indexOf(input.charAt(i++));
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enc3 = alphabet.indexOf(input.charAt(i++));
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enc4 = alphabet.indexOf(input.charAt(i++));
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chr1 = (enc1 << 2) | (enc2 >> 4);
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chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
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chr3 = ((enc3 & 3) << 6) | enc4;
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output.push(chr1);
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if (enc3 != 64) {
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output.push(chr2);
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}
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if (enc4 != 64) {
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output.push(chr3);
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}
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}
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// return Python bytes
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return _b_.bytes(output, 'utf-8', 'strict')
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},
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_utf8_encode: function(string) {
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string = string.replace(/\r\n/g, "\n");
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var utftext = "";
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for (var n = 0; n < string.length; n++) {
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var c = string.charCodeAt(n);
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if (c < 128) {
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utftext += String.fromCharCode(c);
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}
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else if ((c > 127) && (c < 2048)) {
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utftext += String.fromCharCode((c >> 6) | 192);
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utftext += String.fromCharCode((c & 63) | 128);
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}
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else {
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utftext += String.fromCharCode((c >> 12) | 224);
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utftext += String.fromCharCode(((c >> 6) & 63) | 128);
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utftext += String.fromCharCode((c & 63) | 128);
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}
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}
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return utftext;
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},
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_utf8_decode: function(utftext) {
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var string = "";
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var i = 0;
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var c = c1 = c2 = 0;
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while (i < utftext.length) {
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c = utftext.charCodeAt(i);
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if (c < 128) {
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string += String.fromCharCode(c);
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i++;
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}
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else if ((c > 191) && (c < 224)) {
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c2 = utftext.charCodeAt(i + 1);
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string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
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i += 2;
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}
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else {
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c2 = utftext.charCodeAt(i + 1);
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c3 = utftext.charCodeAt(i + 2);
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string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
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i += 3;
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}
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}
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return string;
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}
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}
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return {Base64:Base64}
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}
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)(__BRYTHON__)
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