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arithmetic-coding
- English Documentation
- Chinese Documentation
Installation
Install as module for API usage:
npm i arithmetic-codingOr install as global CLI:
npm i -g arithmetic-codingAPI
From file path:
const ariCoding = require('arithmetic-coding');
// Encode from file
ariCoding.encode(path.resolve('/txt/long.txt'), path.resolve('/txt/long-encoded.txt'));
// Decode from file
ariCoding.decode(path.resolve('/txt/long-encoded.txt'), path.resolve('/txt/long-decoded.txt'));From Buffer:
let data = Buffer.from('Example data', 'utf8');
// Encode from Buffer
let encoded = encode.encodeFromBuffer(data);
console.log(`encoded = ${encoded}`);
// Decode from Buffer
let decoded = decode.decodeFromBuffer(encoded);
console.log(`decoded = ${decoded}`);Command-line interface
$ ari-coding -h
Usage: index [options] [command]
Options:
-v, --version output the version number
-h, --help output usage information
Commands:
encode|e [options] <file> encode a file
decode|d [options] <file> decode a file
$ ari-coding encode -h
Usage: encode|e [options] <file>
encode a file
Options:
-o, --output <file> output file path
-h, --help output usage informationPerformance
You can see the latest travis test for running time used by each test.
Some benchmarks are shown below:
| File size (Bytes) | total time | encode time | decode time |
|---|---|---|---|
| 60640 | 110ms | small | 110ms |
| 2130640 | 2940ms | 426ms | 2514ms |