|
|
|
|
iconv-lite - pure javascript character encoding conversion
|
|
|
|
|
======================================================================
|
|
|
|
|
|
|
|
|
|
[![Build Status](https://secure.travis-ci.org/ashtuchkin/iconv-lite.png?branch=master)](http://travis-ci.org/ashtuchkin/iconv-lite)
|
|
|
|
|
|
|
|
|
|
## Features
|
|
|
|
|
|
|
|
|
|
* Pure javascript. Doesn't need native code compilation.
|
|
|
|
|
* Easy API.
|
|
|
|
|
* Works on Windows and in sandboxed environments like [Cloud9](http://c9.io).
|
|
|
|
|
* Encoding is much faster than node-iconv (see below for performance comparison).
|
|
|
|
|
|
|
|
|
|
## Usage
|
|
|
|
|
|
|
|
|
|
var iconv = require('iconv-lite');
|
|
|
|
|
|
|
|
|
|
// Convert from an encoded buffer to string.
|
|
|
|
|
str = iconv.decode(buf, 'win1251');
|
|
|
|
|
|
|
|
|
|
// Convert from string to an encoded buffer.
|
|
|
|
|
buf = iconv.encode("Sample input string", 'win1251');
|
|
|
|
|
|
|
|
|
|
## Supported encodings
|
|
|
|
|
|
|
|
|
|
* All node.js native encodings: 'utf8', 'ucs2', 'ascii', 'binary', 'base64'
|
|
|
|
|
* All widespread single byte encodings: Windows 125x family, ISO-8859 family,
|
|
|
|
|
IBM/DOS codepages, Macintosh family, KOI8 family.
|
|
|
|
|
Aliases like 'latin1', 'us-ascii' also supported.
|
|
|
|
|
* Multibyte encodings: 'gbk', 'gb2313', 'Big5', 'cp950'.
|
|
|
|
|
|
|
|
|
|
Others are easy to add, see the source. Please, participate.
|
|
|
|
|
Most encodings are generated from node-iconv. Thank you Ben Noordhuis and iconv authors!
|
|
|
|
|
|
|
|
|
|
Not supported yet: EUC family, Shift_JIS.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## Encoding/decoding speed
|
|
|
|
|
|
|
|
|
|
Comparison with node-iconv module (1000x256kb, on Ubuntu 12.04, Core i5/2.5 GHz, Node v0.8.7).
|
|
|
|
|
Note: your results may vary, so please always check on your hardware.
|
|
|
|
|
|
|
|
|
|
operation iconv@1.2.4 iconv-lite@0.2.4
|
|
|
|
|
----------------------------------------------------------
|
|
|
|
|
encode('win1251') ~115 Mb/s ~230 Mb/s
|
|
|
|
|
decode('win1251') ~95 Mb/s ~130 Mb/s
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## Notes
|
|
|
|
|
|
|
|
|
|
When decoding, a 'binary'-encoded string can be used as a source buffer.
|
|
|
|
|
Untranslatable characters are set to <20> or ?. No transliteration is currently supported, pull requests are welcome.
|
|
|
|
|
|
|
|
|
|
## Testing
|
|
|
|
|
|
|
|
|
|
git clone git@github.com:ashtuchkin/iconv-lite.git
|
|
|
|
|
cd iconv-lite
|
|
|
|
|
npm install
|
|
|
|
|
npm test
|
|
|
|
|
|
|
|
|
|
# To view performance:
|
|
|
|
|
node test/performance.js
|
|
|
|
|
|
|
|
|
|
## TODO
|
|
|
|
|
|
|
|
|
|
* Support streaming character conversion, something like util.pipe(req, iconv.fromEncodingStream('latin1')).
|
|
|
|
|
* Add more encodings.
|
|
|
|
|
* Add transliteration (best fit char).
|
|
|
|
|
* Add tests and correct support of variable-byte encodings (currently work is delegated to node).
|