--- /dev/null
+## Pure JS character encoding conversion
+
+<!-- [](http://travis-ci.org/ashtuchkin/iconv-lite) -->
+
+ * Doesn't need native code compilation. Works on Windows and in sandboxed environments like [Cloud9](http://c9.io).
+ * Used in popular projects like [Express.js (body_parser)](https://github.com/expressjs/body-parser),
+ [Grunt](http://gruntjs.com/), [Nodemailer](http://www.nodemailer.com/), [Yeoman](http://yeoman.io/) and others.
+ * Faster than [node-iconv](https://github.com/bnoordhuis/node-iconv) (see below for performance comparison).
+ * Intuitive encode/decode API
+ * Streaming support for Node v0.10+
+ * Can extend Node.js primitives (buffers, streams) to support all iconv-lite encodings.
+ * In-browser usage via [Browserify](https://github.com/substack/node-browserify) (~180k gzip compressed with Buffer shim included).
+ * License: MIT.
+
+[](https://npmjs.org/packages/iconv-lite/)
+
+## Usage
+### Basic API
+```javascript
+var iconv = require('iconv-lite');
+
+// Convert from an encoded buffer to js string.
+str = iconv.decode(new Buffer([0x68, 0x65, 0x6c, 0x6c, 0x6f]), 'win1251');
+
+// Convert from js string to an encoded buffer.
+buf = iconv.encode("Sample input string", 'win1251');
+
+// Check if encoding is supported
+iconv.encodingExists("us-ascii")
+```
+
+### Streaming API (Node v0.10+)
+```javascript
+
+// Decode stream (from binary stream to js strings)
+http.createServer(function(req, res) {
+ var converterStream = iconv.decodeStream('win1251');
+ req.pipe(converterStream);
+
+ converterStream.on('data', function(str) {
+ console.log(str); // Do something with decoded strings, chunk-by-chunk.
+ });
+});
+
+// Convert encoding streaming example
+fs.createReadStream('file-in-win1251.txt')
+ .pipe(iconv.decodeStream('win1251'))
+ .pipe(iconv.encodeStream('ucs2'))
+ .pipe(fs.createWriteStream('file-in-ucs2.txt'));
+
+// Sugar: all encode/decode streams have .collect(cb) method to accumulate data.
+http.createServer(function(req, res) {
+ req.pipe(iconv.decodeStream('win1251')).collect(function(err, body) {
+ assert(typeof body == 'string');
+ console.log(body); // full request body string
+ });
+});
+```
+
+### Extend Node.js own encodings
+```javascript
+// After this call all Node basic primitives will understand iconv-lite encodings.
+iconv.extendNodeEncodings();
+
+// Examples:
+buf = new Buffer(str, 'win1251');
+buf.write(str, 'gbk');
+str = buf.toString('latin1');
+assert(Buffer.isEncoding('iso-8859-15'));
+Buffer.byteLength(str, 'us-ascii');
+
+http.createServer(function(req, res) {
+ req.setEncoding('big5');
+ req.collect(function(err, body) {
+ console.log(body);
+ });
+});
+
+fs.createReadStream("file.txt", "shift_jis");
+
+// External modules are also supported (if they use Node primitives, which they probably do).
+request = require('request');
+request({
+ url: "http://github.com/",
+ encoding: "cp932"
+});
+
+// To remove extensions
+iconv.undoExtendNodeEncodings();
+```
+
+## Supported encodings
+
+ * All node.js native encodings: utf8, ucs2 / utf16-le, ascii, binary, base64, hex.
+ * Additional unicode encodings: utf16, utf16-be, utf-7, utf-7-imap.
+ * All widespread singlebyte encodings: Windows 125x family, ISO-8859 family,
+ IBM/DOS codepages, Macintosh family, KOI8 family, all others supported by iconv library.
+ Aliases like 'latin1', 'us-ascii' also supported.
+ * All widespread multibyte encodings: CP932, CP936, CP949, CP950, GB2313, GBK, GB18030, Big5, Shift_JIS, EUC-JP.
+
+See [all supported encodings on wiki](https://github.com/ashtuchkin/iconv-lite/wiki/Supported-Encodings).
+
+Most singlebyte encodings are generated automatically from [node-iconv](https://github.com/bnoordhuis/node-iconv). Thank you Ben Noordhuis and libiconv authors!
+
+Multibyte encodings are generated from [Unicode.org mappings](http://www.unicode.org/Public/MAPPINGS/) and [WHATWG Encoding Standard mappings](http://encoding.spec.whatwg.org/). Thank you, respective authors!
+
+
+## Encoding/decoding speed
+
+Comparison with node-iconv module (1000x256kb, on MacBook Pro, Core i5/2.6 GHz, Node v0.10.26).
+Note: your results may vary, so please always check on your hardware.
+
+ operation iconv@2.1.4 iconv-lite@0.4.0
+ ----------------------------------------------------------
+ encode('win1251') ~130 Mb/s ~380 Mb/s
+ decode('win1251') ~127 Mb/s ~210 Mb/s
+
+
+## Notes
+
+When decoding, be sure to supply a Buffer to decode() method, otherwise [bad things usually happen](https://github.com/ashtuchkin/iconv-lite/wiki/Use-Buffers-when-decoding).
+Untranslatable characters are set to � or ?. No transliteration is currently supported.
+Uses BOM to determine endianness, but doesn't remove it. Use ['strip-bom' module](https://github.com/sindresorhus/strip-bom).
+Node versions 0.10.31 and 0.11.13 are buggy, don't use them (see #65, #77).
+
+## Testing
+
+```bash
+$ git clone git@github.com:ashtuchkin/iconv-lite.git
+$ cd iconv-lite
+$ npm install
+$ npm test
+
+$ # To view performance:
+$ node test/performance.js
+
+$ # To view test coverage:
+$ npm run coverage
+$ open coverage/lcov-report/index.html
+```
+
+## Adoption
+[](https://nodei.co/npm/iconv-lite/)
+[](https://www.codeship.io/projects/29053)
Code Review / sdnc / oam.git / blobdiff