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232
node_modules/iconv-lite/lib/index.js
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232
node_modules/iconv-lite/lib/index.js
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@@ -1,183 +1,153 @@
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"use strict"
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"use strict";
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var Buffer = require("safer-buffer").Buffer
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// Some environments don't have global Buffer (e.g. React Native).
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// Solution would be installing npm modules "buffer" and "stream" explicitly.
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var Buffer = require("safer-buffer").Buffer;
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var bomHandling = require("./bom-handling")
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var mergeModules = require("./helpers/merge-exports")
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var iconv = module.exports
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var bomHandling = require("./bom-handling"),
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iconv = module.exports;
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// All codecs and aliases are kept here, keyed by encoding name/alias.
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// They are lazy loaded in `iconv.getCodec` from `encodings/index.js`.
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// Cannot initialize with { __proto__: null } because Boolean({ __proto__: null }) === true
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iconv.encodings = null
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iconv.encodings = null;
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// Characters emitted in case of error.
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iconv.defaultCharUnicode = "<22>"
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iconv.defaultCharSingleByte = "?"
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iconv.defaultCharUnicode = '<27>';
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iconv.defaultCharSingleByte = '?';
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// Public API.
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iconv.encode = function encode (str, encoding, options) {
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str = "" + (str || "") // Ensure string.
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iconv.encode = function encode(str, encoding, options) {
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str = "" + (str || ""); // Ensure string.
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var encoder = iconv.getEncoder(encoding, options)
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var encoder = iconv.getEncoder(encoding, options);
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var res = encoder.write(str)
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var trail = encoder.end()
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return (trail && trail.length > 0) ? Buffer.concat([res, trail]) : res
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var res = encoder.write(str);
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var trail = encoder.end();
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return (trail && trail.length > 0) ? Buffer.concat([res, trail]) : res;
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}
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iconv.decode = function decode (buf, encoding, options) {
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if (typeof buf === "string") {
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if (!iconv.skipDecodeWarning) {
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console.error("Iconv-lite warning: decode()-ing strings is deprecated. Refer to https://github.com/ashtuchkin/iconv-lite/wiki/Use-Buffers-when-decoding")
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iconv.skipDecodeWarning = true
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iconv.decode = function decode(buf, encoding, options) {
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if (typeof buf === 'string') {
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if (!iconv.skipDecodeWarning) {
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console.error('Iconv-lite warning: decode()-ing strings is deprecated. Refer to https://github.com/ashtuchkin/iconv-lite/wiki/Use-Buffers-when-decoding');
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iconv.skipDecodeWarning = true;
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}
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buf = Buffer.from("" + (buf || ""), "binary"); // Ensure buffer.
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}
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buf = Buffer.from("" + (buf || ""), "binary") // Ensure buffer.
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}
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var decoder = iconv.getDecoder(encoding, options);
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var decoder = iconv.getDecoder(encoding, options)
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var res = decoder.write(buf);
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var trail = decoder.end();
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var res = decoder.write(buf)
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var trail = decoder.end()
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return trail ? (res + trail) : res
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return trail ? (res + trail) : res;
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}
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iconv.encodingExists = function encodingExists (enc) {
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try {
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iconv.getCodec(enc)
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return true
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} catch (e) {
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return false
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}
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iconv.encodingExists = function encodingExists(enc) {
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try {
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iconv.getCodec(enc);
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return true;
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} catch (e) {
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return false;
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}
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}
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// Legacy aliases to convert functions
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iconv.toEncoding = iconv.encode
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iconv.fromEncoding = iconv.decode
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iconv.toEncoding = iconv.encode;
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iconv.fromEncoding = iconv.decode;
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// Search for a codec in iconv.encodings. Cache codec data in iconv._codecDataCache.
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iconv._codecDataCache = { __proto__: null }
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iconv._codecDataCache = {};
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iconv.getCodec = function getCodec(encoding) {
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if (!iconv.encodings)
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iconv.encodings = require("../encodings"); // Lazy load all encoding definitions.
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// Canonicalize encoding name: strip all non-alphanumeric chars and appended year.
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var enc = iconv._canonicalizeEncoding(encoding);
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iconv.getCodec = function getCodec (encoding) {
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if (!iconv.encodings) {
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var raw = require("../encodings")
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// TODO: In future versions when old nodejs support is removed can use object.assign
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iconv.encodings = { __proto__: null } // Initialize as empty object.
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mergeModules(iconv.encodings, raw)
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}
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// Traverse iconv.encodings to find actual codec.
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var codecOptions = {};
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while (true) {
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var codec = iconv._codecDataCache[enc];
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if (codec)
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return codec;
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// Canonicalize encoding name: strip all non-alphanumeric chars and appended year.
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var enc = iconv._canonicalizeEncoding(encoding)
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var codecDef = iconv.encodings[enc];
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// Traverse iconv.encodings to find actual codec.
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var codecOptions = {}
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while (true) {
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var codec = iconv._codecDataCache[enc]
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switch (typeof codecDef) {
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case "string": // Direct alias to other encoding.
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enc = codecDef;
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break;
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if (codec) { return codec }
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case "object": // Alias with options. Can be layered.
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for (var key in codecDef)
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codecOptions[key] = codecDef[key];
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var codecDef = iconv.encodings[enc]
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if (!codecOptions.encodingName)
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codecOptions.encodingName = enc;
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enc = codecDef.type;
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break;
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switch (typeof codecDef) {
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case "string": // Direct alias to other encoding.
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enc = codecDef
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break
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case "function": // Codec itself.
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if (!codecOptions.encodingName)
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codecOptions.encodingName = enc;
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case "object": // Alias with options. Can be layered.
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for (var key in codecDef) { codecOptions[key] = codecDef[key] }
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// The codec function must load all tables and return object with .encoder and .decoder methods.
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// It'll be called only once (for each different options object).
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codec = new codecDef(codecOptions, iconv);
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if (!codecOptions.encodingName) { codecOptions.encodingName = enc }
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iconv._codecDataCache[codecOptions.encodingName] = codec; // Save it to be reused later.
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return codec;
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enc = codecDef.type
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break
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case "function": // Codec itself.
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if (!codecOptions.encodingName) { codecOptions.encodingName = enc }
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// The codec function must load all tables and return object with .encoder and .decoder methods.
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// It'll be called only once (for each different options object).
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//
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codec = new codecDef(codecOptions, iconv)
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iconv._codecDataCache[codecOptions.encodingName] = codec // Save it to be reused later.
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return codec
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default:
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throw new Error("Encoding not recognized: '" + encoding + "' (searched as: '" + enc + "')")
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default:
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throw new Error("Encoding not recognized: '" + encoding + "' (searched as: '"+enc+"')");
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}
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}
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}
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}
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iconv._canonicalizeEncoding = function (encoding) {
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// Canonicalize encoding name: strip all non-alphanumeric chars and appended year.
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return ("" + encoding).toLowerCase().replace(/:\d{4}$|[^0-9a-z]/g, "")
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iconv._canonicalizeEncoding = function(encoding) {
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// Canonicalize encoding name: strip all non-alphanumeric chars and appended year.
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return (''+encoding).toLowerCase().replace(/:\d{4}$|[^0-9a-z]/g, "");
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}
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iconv.getEncoder = function getEncoder (encoding, options) {
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var codec = iconv.getCodec(encoding)
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var encoder = new codec.encoder(options, codec)
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iconv.getEncoder = function getEncoder(encoding, options) {
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var codec = iconv.getCodec(encoding),
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encoder = new codec.encoder(options, codec);
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if (codec.bomAware && options && options.addBOM) { encoder = new bomHandling.PrependBOM(encoder, options) }
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if (codec.bomAware && options && options.addBOM)
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encoder = new bomHandling.PrependBOM(encoder, options);
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return encoder
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return encoder;
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}
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iconv.getDecoder = function getDecoder (encoding, options) {
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var codec = iconv.getCodec(encoding)
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var decoder = new codec.decoder(options, codec)
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iconv.getDecoder = function getDecoder(encoding, options) {
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var codec = iconv.getCodec(encoding),
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decoder = new codec.decoder(options, codec);
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if (codec.bomAware && !(options && options.stripBOM === false)) { decoder = new bomHandling.StripBOM(decoder, options) }
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if (codec.bomAware && !(options && options.stripBOM === false))
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decoder = new bomHandling.StripBOM(decoder, options);
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return decoder
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return decoder;
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}
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// Streaming API
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// NOTE: Streaming API naturally depends on 'stream' module from Node.js. Unfortunately in browser environments this module can add
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// up to 100Kb to the output bundle. To avoid unnecessary code bloat, we don't enable Streaming API in browser by default.
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// If you would like to enable it explicitly, please add the following code to your app:
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// > iconv.enableStreamingAPI(require('stream'));
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iconv.enableStreamingAPI = function enableStreamingAPI (streamModule) {
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if (iconv.supportsStreams) { return }
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// Dependency-inject stream module to create IconvLite stream classes.
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var streams = require("./streams")(streamModule)
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// Load extensions in Node. All of them are omitted in Browserify build via 'browser' field in package.json.
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var nodeVer = typeof process !== 'undefined' && process.versions && process.versions.node;
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if (nodeVer) {
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// Not public API yet, but expose the stream classes.
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iconv.IconvLiteEncoderStream = streams.IconvLiteEncoderStream
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iconv.IconvLiteDecoderStream = streams.IconvLiteDecoderStream
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// Load streaming support in Node v0.10+
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var nodeVerArr = nodeVer.split(".").map(Number);
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if (nodeVerArr[0] > 0 || nodeVerArr[1] >= 10) {
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require("./streams")(iconv);
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}
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// Streaming API.
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iconv.encodeStream = function encodeStream (encoding, options) {
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return new iconv.IconvLiteEncoderStream(iconv.getEncoder(encoding, options), options)
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}
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iconv.decodeStream = function decodeStream (encoding, options) {
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return new iconv.IconvLiteDecoderStream(iconv.getDecoder(encoding, options), options)
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}
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iconv.supportsStreams = true
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// Load Node primitive extensions.
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require("./extend-node")(iconv);
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}
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// Enable Streaming API automatically if 'stream' module is available and non-empty (the majority of environments).
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var streamModule
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try {
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streamModule = require("stream")
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} catch (e) {}
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if (streamModule && streamModule.Transform) {
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iconv.enableStreamingAPI(streamModule)
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} else {
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// In rare cases where 'stream' module is not available by default, throw a helpful exception.
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iconv.encodeStream = iconv.decodeStream = function () {
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throw new Error("iconv-lite Streaming API is not enabled. Use iconv.enableStreamingAPI(require('stream')); to enable it.")
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}
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}
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// Some environments, such as browsers, may not load JavaScript files as UTF-8
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// eslint-disable-next-line no-constant-condition
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if ("Ā" !== "\u0100") {
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console.error("iconv-lite warning: js files use non-utf8 encoding. See https://github.com/ashtuchkin/iconv-lite/wiki/Javascript-source-file-encodings for more info.")
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if ("Ā" != "\u0100") {
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console.error("iconv-lite warning: javascript files use encoding different from utf-8. See https://github.com/ashtuchkin/iconv-lite/wiki/Javascript-source-file-encodings for more info.");
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}
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