diff options
Diffstat (limited to 'node_modules/iconv-lite/lib/streams.js')
-rw-r--r-- | node_modules/iconv-lite/lib/streams.js | 190 |
1 files changed, 89 insertions, 101 deletions
diff --git a/node_modules/iconv-lite/lib/streams.js b/node_modules/iconv-lite/lib/streams.js index 440955295..a1506482f 100644 --- a/node_modules/iconv-lite/lib/streams.js +++ b/node_modules/iconv-lite/lib/streams.js @@ -1,121 +1,109 @@ "use strict"; -var Buffer = require("buffer").Buffer, - Transform = require("stream").Transform; +var Buffer = require("safer-buffer").Buffer; +// NOTE: Due to 'stream' module being pretty large (~100Kb, significant in browser environments), +// we opt to dependency-inject it instead of creating a hard dependency. +module.exports = function(stream_module) { + var Transform = stream_module.Transform; -// == Exports ================================================================== -module.exports = function(iconv) { - - // Additional Public API. - iconv.encodeStream = function encodeStream(encoding, options) { - return new IconvLiteEncoderStream(iconv.getEncoder(encoding, options), options); + // == Encoder stream ======================================================= + + function IconvLiteEncoderStream(conv, options) { + this.conv = conv; + options = options || {}; + options.decodeStrings = false; // We accept only strings, so we don't need to decode them. + Transform.call(this, options); } - iconv.decodeStream = function decodeStream(encoding, options) { - return new IconvLiteDecoderStream(iconv.getDecoder(encoding, options), options); + IconvLiteEncoderStream.prototype = Object.create(Transform.prototype, { + constructor: { value: IconvLiteEncoderStream } + }); + + IconvLiteEncoderStream.prototype._transform = function(chunk, encoding, done) { + if (typeof chunk != 'string') + return done(new Error("Iconv encoding stream needs strings as its input.")); + try { + var res = this.conv.write(chunk); + if (res && res.length) this.push(res); + done(); + } + catch (e) { + done(e); + } } - iconv.supportsStreams = true; + IconvLiteEncoderStream.prototype._flush = function(done) { + try { + var res = this.conv.end(); + if (res && res.length) this.push(res); + done(); + } + catch (e) { + done(e); + } + } + IconvLiteEncoderStream.prototype.collect = function(cb) { + var chunks = []; + this.on('error', cb); + this.on('data', function(chunk) { chunks.push(chunk); }); + this.on('end', function() { + cb(null, Buffer.concat(chunks)); + }); + return this; + } - // Not published yet. - iconv.IconvLiteEncoderStream = IconvLiteEncoderStream; - iconv.IconvLiteDecoderStream = IconvLiteDecoderStream; - iconv._collect = IconvLiteDecoderStream.prototype.collect; -}; + // == Decoder stream ======================================================= -// == Encoder stream ======================================================= -function IconvLiteEncoderStream(conv, options) { - this.conv = conv; - options = options || {}; - options.decodeStrings = false; // We accept only strings, so we don't need to decode them. - Transform.call(this, options); -} - -IconvLiteEncoderStream.prototype = Object.create(Transform.prototype, { - constructor: { value: IconvLiteEncoderStream } -}); - -IconvLiteEncoderStream.prototype._transform = function(chunk, encoding, done) { - if (typeof chunk != 'string') - return done(new Error("Iconv encoding stream needs strings as its input.")); - try { - var res = this.conv.write(chunk); - if (res && res.length) this.push(res); - done(); - } - catch (e) { - done(e); + function IconvLiteDecoderStream(conv, options) { + this.conv = conv; + options = options || {}; + options.encoding = this.encoding = 'utf8'; // We output strings. + Transform.call(this, options); } -} -IconvLiteEncoderStream.prototype._flush = function(done) { - try { - var res = this.conv.end(); - if (res && res.length) this.push(res); - done(); - } - catch (e) { - done(e); - } -} - -IconvLiteEncoderStream.prototype.collect = function(cb) { - var chunks = []; - this.on('error', cb); - this.on('data', function(chunk) { chunks.push(chunk); }); - this.on('end', function() { - cb(null, Buffer.concat(chunks)); + IconvLiteDecoderStream.prototype = Object.create(Transform.prototype, { + constructor: { value: IconvLiteDecoderStream } }); - return this; -} - - -// == Decoder stream ======================================================= -function IconvLiteDecoderStream(conv, options) { - this.conv = conv; - options = options || {}; - options.encoding = this.encoding = 'utf8'; // We output strings. - Transform.call(this, options); -} - -IconvLiteDecoderStream.prototype = Object.create(Transform.prototype, { - constructor: { value: IconvLiteDecoderStream } -}); - -IconvLiteDecoderStream.prototype._transform = function(chunk, encoding, done) { - if (!Buffer.isBuffer(chunk)) - return done(new Error("Iconv decoding stream needs buffers as its input.")); - try { - var res = this.conv.write(chunk); - if (res && res.length) this.push(res, this.encoding); - done(); - } - catch (e) { - done(e); + + IconvLiteDecoderStream.prototype._transform = function(chunk, encoding, done) { + if (!Buffer.isBuffer(chunk) && !(chunk instanceof Uint8Array)) + return done(new Error("Iconv decoding stream needs buffers as its input.")); + try { + var res = this.conv.write(chunk); + if (res && res.length) this.push(res, this.encoding); + done(); + } + catch (e) { + done(e); + } } -} -IconvLiteDecoderStream.prototype._flush = function(done) { - try { - var res = this.conv.end(); - if (res && res.length) this.push(res, this.encoding); - done(); + IconvLiteDecoderStream.prototype._flush = function(done) { + try { + var res = this.conv.end(); + if (res && res.length) this.push(res, this.encoding); + done(); + } + catch (e) { + done(e); + } } - catch (e) { - done(e); + + IconvLiteDecoderStream.prototype.collect = function(cb) { + var res = ''; + this.on('error', cb); + this.on('data', function(chunk) { res += chunk; }); + this.on('end', function() { + cb(null, res); + }); + return this; } -} - -IconvLiteDecoderStream.prototype.collect = function(cb) { - var res = ''; - this.on('error', cb); - this.on('data', function(chunk) { res += chunk; }); - this.on('end', function() { - cb(null, res); - }); - return this; -} + return { + IconvLiteEncoderStream: IconvLiteEncoderStream, + IconvLiteDecoderStream: IconvLiteDecoderStream, + }; +}; |