105 lines
2.2 KiB
JavaScript
105 lines
2.2 KiB
JavaScript
(function () {
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'use strict';
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function utf8ToBinaryString(str) {
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var escstr = encodeURIComponent(str);
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// replaces any uri escape sequence, such as %0A,
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// with binary escape, such as 0x0A
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var binstr = escstr.replace(/%([0-9A-F]{2})/g, function(match, p1) {
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return String.fromCharCode('0x' + p1);
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});
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return binstr;
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}
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function utf8ToBuffer(str) {
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var binstr = utf8ToBinaryString(str);
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var buf = binaryStringToBuffer(binstr);
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return buf;
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}
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function utf8ToBase64(str) {
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var binstr = utf8ToBinaryString(str);
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return btoa(binstr);
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}
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function binaryStringToUtf8(binstr) {
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var escstr = binstr.replace(/(.)/g, function (m, p) {
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var code = p.charCodeAt(p).toString(16).toUpperCase();
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if (code.length < 2) {
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code = '0' + code;
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}
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return '%' + code;
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});
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return decodeURIComponent(escstr);
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}
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function bufferToUtf8(buf) {
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var binstr = bufferToBinaryString(buf);
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return binaryStringToUtf8(binstr);
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}
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function base64ToUtf8(b64) {
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var binstr = atob(b64);
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return binaryStringToUtf8(binstr);
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}
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function bufferToBinaryString(buf) {
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var binstr = Array.prototype.map.call(buf, function (ch) {
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return String.fromCharCode(ch);
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}).join('');
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return binstr;
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}
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function bufferToBase64(arr) {
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var binstr = bufferToBinaryString(arr);
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return btoa(binstr);
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}
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function binaryStringToBuffer(binstr) {
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var buf;
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if ('undefined' !== typeof Uint8Array) {
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buf = new Uint8Array(binstr.length);
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} else {
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buf = [];
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}
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Array.prototype.forEach.call(binstr, function (ch, i) {
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buf[i] = ch.charCodeAt(0);
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});
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return buf;
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}
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function base64ToBuffer(base64) {
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var binstr = atob(base64);
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var buf = binaryStringToBuffer(binstr);
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return buf;
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}
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window.Unibabel = {
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utf8ToBinaryString: utf8ToBinaryString
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, utf8ToBuffer: utf8ToBuffer
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, utf8ToBase64: utf8ToBase64
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, binaryStringToUtf8: binaryStringToUtf8
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, bufferToUtf8: bufferToUtf8
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, base64ToUtf8: base64ToUtf8
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, bufferToBinaryString: bufferToBinaryString
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, bufferToBase64: bufferToBase64
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, binaryStringToBuffer: binaryStringToBuffer
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, base64ToBuffer: base64ToBuffer
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// compat
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, strToUtf8Arr: utf8ToBuffer
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, utf8ArrToStr: bufferToUtf8
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, arrToBase64: bufferToBase64
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, base64ToArr: base64ToBuffer
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};
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}());
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