mirror of
https://codeberg.org/tacerus/teddit.git
synced 2024-12-01 21:19:26 +01:00
62 lines
1.9 KiB
Markdown
62 lines
1.9 KiB
Markdown
|
# Brotli.js
|
||
|
|
|
||
|
|
Brotli.js is port of the [Brotli](http://tools.ietf.org/html/draft-alakuijala-brotli-01) compression algorithm (as used in the [WOFF2](http://www.w3.org/TR/WOFF2/) font format) to JavaScript. The decompressor is hand ported, and the compressor is ported
|
||
|
|
with Emscripten. The original C++ source code can be found [here](http://github.com/google/brotli).
|
||
|
|
|
||
|
|
## Installation and usage
|
||
|
|
|
||
|
|
Install using npm.
|
||
|
|
|
||
|
|
npm install brotli
|
||
|
|
|
||
|
|
If you want to use brotli in the browser, you should use [Browserify](http://browserify.org/) to build it.
|
||
|
|
|
||
|
|
In node, or in browserify, you can load brotli in the standard way:
|
||
|
|
|
||
|
|
```javascript
|
||
|
|
var brotli = require('brotli');
|
||
|
|
```
|
||
|
|
|
||
|
|
You can also require just the `decompress` function or just the `compress` function, which is useful for browserify builds.
|
||
|
|
For example, here's how you'd require just the `decompress` function.
|
||
|
|
|
||
|
|
```javascript
|
||
|
|
var decompress = require('brotli/decompress');
|
||
|
|
```
|
||
|
|
|
||
|
|
## API
|
||
|
|
|
||
|
|
### brotli.decompress(buffer, [outSize])
|
||
|
|
|
||
|
|
Decompresses the given buffer to produce the original input to the compressor.
|
||
|
|
The `outSize` parameter is optional, and will be computed by the decompressor
|
||
|
|
if not provided. Inside a WOFF2 file, this can be computed from the WOFF2 directory.
|
||
|
|
|
||
|
|
```javascript
|
||
|
|
// decode a buffer where the output size is known
|
||
|
|
brotli.decompress(compressedData, uncompressedLength);
|
||
|
|
|
||
|
|
// decode a buffer where the output size is not known
|
||
|
|
brotli.decompress(fs.readFileSync('compressed.bin'));
|
||
|
|
```
|
||
|
|
|
||
|
|
### brotli.compress(buffer, isText = false)
|
||
|
|
|
||
|
|
Compresses the given buffer. Pass optional parameters as the second argument.
|
||
|
|
|
||
|
|
```javascript
|
||
|
|
// encode a buffer of binary data
|
||
|
|
brotli.compress(fs.readFileSync('myfile.bin'));
|
||
|
|
|
||
|
|
// encode some data with options (default options shown)
|
||
|
|
brotli.compress(fs.readFileSync('myfile.bin'), {
|
||
|
|
mode: 0, // 0 = generic, 1 = text, 2 = font (WOFF2)
|
||
|
|
quality: 11, // 0 - 11
|
||
|
|
lgwin: 22 // window size
|
||
|
|
});
|
||
|
|
```
|
||
|
|
|
||
|
|
## License
|
||
|
|
|
||
|
|
MIT
|