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-rw-r--r--node_modules/iconv-lite/lib/index.js182
1 files changed, 182 insertions, 0 deletions
diff --git a/node_modules/iconv-lite/lib/index.js b/node_modules/iconv-lite/lib/index.js
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+"use strict"
+
+var Buffer = require("safer-buffer").Buffer
+
+var bomHandling = require("./bom-handling")
+var mergeModules = require("./helpers/merge-exports")
+
+// All codecs and aliases are kept here, keyed by encoding name/alias.
+// They are lazy loaded in `iconv.getCodec` from `encodings/index.js`.
+// Cannot initialize with { __proto__: null } because Boolean({ __proto__: null }) === true
+module.exports.encodings = null
+
+// Characters emitted in case of error.
+module.exports.defaultCharUnicode = "�"
+module.exports.defaultCharSingleByte = "?"
+
+// Public API.
+module.exports.encode = function encode (str, encoding, options) {
+ str = "" + (str || "") // Ensure string.
+
+ var encoder = module.exports.getEncoder(encoding, options)
+
+ var res = encoder.write(str)
+ var trail = encoder.end()
+
+ return (trail && trail.length > 0) ? Buffer.concat([res, trail]) : res
+}
+
+module.exports.decode = function decode (buf, encoding, options) {
+ if (typeof buf === "string") {
+ if (!module.exports.skipDecodeWarning) {
+ console.error("Iconv-lite warning: decode()-ing strings is deprecated. Refer to https://github.com/ashtuchkin/iconv-lite/wiki/Use-Buffers-when-decoding")
+ module.exports.skipDecodeWarning = true
+ }
+
+ buf = Buffer.from("" + (buf || ""), "binary") // Ensure buffer.
+ }
+
+ var decoder = module.exports.getDecoder(encoding, options)
+
+ var res = decoder.write(buf)
+ var trail = decoder.end()
+
+ return trail ? (res + trail) : res
+}
+
+module.exports.encodingExists = function encodingExists (enc) {
+ try {
+ module.exports.getCodec(enc)
+ return true
+ } catch (e) {
+ return false
+ }
+}
+
+// Legacy aliases to convert functions
+module.exports.toEncoding = module.exports.encode
+module.exports.fromEncoding = module.exports.decode
+
+// Search for a codec in iconv.encodings. Cache codec data in iconv._codecDataCache.
+module.exports._codecDataCache = { __proto__: null }
+
+module.exports.getCodec = function getCodec (encoding) {
+ if (!module.exports.encodings) {
+ var raw = require("../encodings")
+ // TODO: In future versions when old nodejs support is removed can use object.assign
+ module.exports.encodings = { __proto__: null } // Initialize as empty object.
+ mergeModules(module.exports.encodings, raw)
+ }
+
+ // Canonicalize encoding name: strip all non-alphanumeric chars and appended year.
+ var enc = module.exports._canonicalizeEncoding(encoding)
+
+ // Traverse iconv.encodings to find actual codec.
+ var codecOptions = {}
+ while (true) {
+ var codec = module.exports._codecDataCache[enc]
+
+ if (codec) { return codec }
+
+ var codecDef = module.exports.encodings[enc]
+
+ switch (typeof codecDef) {
+ case "string": // Direct alias to other encoding.
+ enc = codecDef
+ break
+
+ case "object": // Alias with options. Can be layered.
+ for (var key in codecDef) { codecOptions[key] = codecDef[key] }
+
+ if (!codecOptions.encodingName) { codecOptions.encodingName = enc }
+
+ enc = codecDef.type
+ break
+
+ case "function": // Codec itself.
+ if (!codecOptions.encodingName) { codecOptions.encodingName = enc }
+
+ // The codec function must load all tables and return object with .encoder and .decoder methods.
+ // It'll be called only once (for each different options object).
+ //
+ codec = new codecDef(codecOptions, module.exports)
+
+ module.exports._codecDataCache[codecOptions.encodingName] = codec // Save it to be reused later.
+ return codec
+
+ default:
+ throw new Error("Encoding not recognized: '" + encoding + "' (searched as: '" + enc + "')")
+ }
+ }
+}
+
+module.exports._canonicalizeEncoding = function (encoding) {
+ // Canonicalize encoding name: strip all non-alphanumeric chars and appended year.
+ return ("" + encoding).toLowerCase().replace(/:\d{4}$|[^0-9a-z]/g, "")
+}
+
+module.exports.getEncoder = function getEncoder (encoding, options) {
+ var codec = module.exports.getCodec(encoding)
+ var encoder = new codec.encoder(options, codec)
+
+ if (codec.bomAware && options && options.addBOM) { encoder = new bomHandling.PrependBOM(encoder, options) }
+
+ return encoder
+}
+
+module.exports.getDecoder = function getDecoder (encoding, options) {
+ var codec = module.exports.getCodec(encoding)
+ var decoder = new codec.decoder(options, codec)
+
+ if (codec.bomAware && !(options && options.stripBOM === false)) { decoder = new bomHandling.StripBOM(decoder, options) }
+
+ return decoder
+}
+
+// Streaming API
+// NOTE: Streaming API naturally depends on 'stream' module from Node.js. Unfortunately in browser environments this module can add
+// up to 100Kb to the output bundle. To avoid unnecessary code bloat, we don't enable Streaming API in browser by default.
+// If you would like to enable it explicitly, please add the following code to your app:
+// > iconv.enableStreamingAPI(require('stream'));
+module.exports.enableStreamingAPI = function enableStreamingAPI (streamModule) {
+ if (module.exports.supportsStreams) { return }
+
+ // Dependency-inject stream module to create IconvLite stream classes.
+ var streams = require("./streams")(streamModule)
+
+ // Not public API yet, but expose the stream classes.
+ module.exports.IconvLiteEncoderStream = streams.IconvLiteEncoderStream
+ module.exports.IconvLiteDecoderStream = streams.IconvLiteDecoderStream
+
+ // Streaming API.
+ module.exports.encodeStream = function encodeStream (encoding, options) {
+ return new module.exports.IconvLiteEncoderStream(module.exports.getEncoder(encoding, options), options)
+ }
+
+ module.exports.decodeStream = function decodeStream (encoding, options) {
+ return new module.exports.IconvLiteDecoderStream(module.exports.getDecoder(encoding, options), options)
+ }
+
+ module.exports.supportsStreams = true
+}
+
+// Enable Streaming API automatically if 'stream' module is available and non-empty (the majority of environments).
+var streamModule
+try {
+ streamModule = require("stream")
+} catch (e) {}
+
+if (streamModule && streamModule.Transform) {
+ module.exports.enableStreamingAPI(streamModule)
+} else {
+ // In rare cases where 'stream' module is not available by default, throw a helpful exception.
+ module.exports.encodeStream = module.exports.decodeStream = function () {
+ throw new Error("iconv-lite Streaming API is not enabled. Use iconv.enableStreamingAPI(require('stream')); to enable it.")
+ }
+}
+
+// Some environments, such as browsers, may not load JavaScript files as UTF-8
+// eslint-disable-next-line no-constant-condition
+if ("Ā" !== "\u0100") {
+ 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.")
+}