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author | Florian Dold <florian.dold@gmail.com> | 2016-10-10 03:43:44 +0200 |
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committer | Florian Dold <florian.dold@gmail.com> | 2016-10-10 03:43:44 +0200 |
commit | abd94a7f5a50f43c797a11b53549ae48fff667c3 (patch) | |
tree | ab8ed457f65cdd72e13e0571d2975729428f1551 /node_modules/iconv-lite/lib/streams.js | |
parent | a0247c6a3fd6a09a41a7e35a3441324c4dcb58be (diff) | |
download | wallet-core-abd94a7f5a50f43c797a11b53549ae48fff667c3.tar.xz |
add node_modules to address #4364
Diffstat (limited to 'node_modules/iconv-lite/lib/streams.js')
-rw-r--r-- | node_modules/iconv-lite/lib/streams.js | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/node_modules/iconv-lite/lib/streams.js b/node_modules/iconv-lite/lib/streams.js new file mode 100644 index 000000000..c95b26c5c --- /dev/null +++ b/node_modules/iconv-lite/lib/streams.js @@ -0,0 +1,120 @@ +"use strict" + +var Transform = require("stream").Transform; + + +// == Exports ================================================================== +module.exports = function(iconv) { + + // Additional Public API. + iconv.encodeStream = function encodeStream(encoding, options) { + return new IconvLiteEncoderStream(iconv.getEncoder(encoding, options), options); + } + + iconv.decodeStream = function decodeStream(encoding, options) { + return new IconvLiteDecoderStream(iconv.getDecoder(encoding, options), options); + } + + iconv.supportsStreams = true; + + + // Not published yet. + iconv.IconvLiteEncoderStream = IconvLiteEncoderStream; + iconv.IconvLiteDecoderStream = IconvLiteDecoderStream; + iconv._collect = IconvLiteDecoderStream.prototype.collect; +}; + + +// == 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); + } +} + +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; +} + + +// == 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._flush = function(done) { + try { + var res = this.conv.end(); + if (res && res.length) this.push(res, this.encoding); + done(); + } + 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; +} + |