kopia lustrzana https://github.com/viljoviitanen/pako
Added generated API docs
Vitaly Puzrin
rodzic
9e18b276cd
commit
52a5c6aa8f
4
.ndocrc
4
.ndocrc
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@ -14,4 +14,6 @@
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# Paths with sources
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################################################################################
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lib
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lib/deflate.js
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lib/inflate.js
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index.js
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2
Makefile
2
Makefile
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@ -91,5 +91,5 @@ publish:
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npm publish https://github.com/${GITHUB_PROJ}/tarball/${NPM_VERSION}
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.PHONY: publish lint
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.PHONY: publish lint doc
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.SILENT: help lint
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29
README.md
29
README.md
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@ -50,21 +50,19 @@ bower install pako
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Example & API
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-------------
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[Full docs](http://nodeca.github.io/pako/).
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```javascript
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var pako = require('pako');
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//
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// Deflate
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//
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var input = new Uint8Array();
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//... fill input data here
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var output = pako.deflate(input);
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//
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// Inflate
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//
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var compressed = new Uint8Array();
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//... fill data to uncompress here
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var result = pako.inflate(compressed);
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@ -75,24 +73,15 @@ var uncompressed = result.data;
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```
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See docs for full API specs.
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Notes
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-----
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Since pako was done mostly for browser, some specific functions were left unported.
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Pako does not contains some very specific zlib functions.
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deflate:
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- writing custom gzip headers (default is ok)
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- `deflateSetDictionary`, `deflateParams`, `deflateSetHeader`, `deflateBound`, `deflatePending`
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inflate:
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TBD
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We will probably provide more modular design, to keep significant part of code reasonably small.
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- __deflate__ - writing bustom gzip headers and methods `deflateSetDictionary`,
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`deflateParams`, `deflateSetHeader`, `deflateBound`, `deflatePending`.
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- __inflate__ - TBD.
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Authors
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@ -101,9 +90,9 @@ Authors
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- Andrey Tupitsin [@anrd83](https://github.com/andr83)
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- Vitaly Puzrin [@puzrin](https://github.com/puzrin)
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Personal thanks to Vyacheslav Egorov ([@mraleph](https://github.com/mraleph)) for
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his awesome tutoruals about optimising JS code for v8, [IRHydra](http://mrale.ph/irhydra/)
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tool and his advices.
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Personal thanks to Vyacheslav Egorov ([@mraleph](https://github.com/mraleph))
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for his awesome tutoruals about optimising JS code for v8,
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[IRHydra](http://mrale.ph/irhydra/) tool and his advices.
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License
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100
lib/deflate.js
100
lib/deflate.js
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@ -15,26 +15,57 @@ function sliceBuf(buf, size) {
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}
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/**
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* new Deflate(ootions)
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* class Deflate
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*
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* Generic JS-style wrapper for zlib calls. If you don't need
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* streaming behaviour - use more simple functions: [[deflate]],
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* [[deflateRaw]] and [[gzip]].
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**/
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/* internal
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* Deflate.chunks -> Array
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*
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* Chunks of output data, if [[Deflate#onData]] not overriden.
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**/
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/**
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* Deflate.result -> Uint8Array|Array
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*
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* Compressed result, generated by default [[Deflate#onData]]
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* and [[Deflate#onEnd]] handlers. Filled after you push last chunk
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* (call [[Deflate#push]] with `Z_FINISH` / `true` param).
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**/
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/**
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* Deflate.err -> Number
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*
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* Error code after deflate finished. 0 (Z_OK) on success.
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* You will not need it in real life, because deflate errors
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* are possible only on wrong options or bad `onData` / `onEnd`
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* custom handlers.
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**/
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/**
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* new Deflate(options)
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* - options (Object): zlib deflate options.
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*
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* Creates new deflator instance with specified params. Supported options:
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*
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* - level
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* - windowBits
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* - memLevel
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* - strategy
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* - `level`
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* - `windowBits`
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* - `memLevel`
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* - `strategy`
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*
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* [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
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* for more information on these.
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*
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* Additional options, for internal needs:
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*
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* - chunkSize
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* - raw (boolean) - do raw deflate
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* - gzip (boolean) - create gzip wrapper
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*/
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* - `chunkSize` - size of generated data chunks (16K by default)
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* - `raw` (boolean) - do raw deflate
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* - `gzip` (boolean) - create gzip wrapper
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**/
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var Deflate = function(options) {
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this.options = utils.assign({
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@ -77,16 +108,16 @@ var Deflate = function(options) {
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/**
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* Deflate#push(data[, mode]) -> Boolean
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*
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* - data (Uint8Array|Array) input data
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* - mode (Number|Boolean) - 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.
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* - data (Uint8Array|Array): input data
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* - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.
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* See constants. Skipped or `false` means Z_NO_FLUSH, `true` meansh Z_FINISH.
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*
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* Pipe input data, generating [Deflate.onData] calls with new compressed
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* chunks. Returns `true` on success. The last chunk must have mode Z_FINISH.
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* That flush pending data & call [Deflate.onEnd].
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* Sends input data to deflate pipe, generating [[Deflate#onData]] calls with
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* new compressed chunks. Returns `true` on success. The last data block must have
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* mode Z_FINISH (or `true`). That flush internal pending buffers and call
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* [[Deflate#onEnd]].
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*
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* On fail call [Deflate.onEnd] with error code and return false.
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* On fail call [[Deflate#onEnd]] with error code and return false.
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**/
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Deflate.prototype.push = function(data, mode) {
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var strm = this.strm;
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@ -135,12 +166,11 @@ Deflate.prototype.push = function(data, mode) {
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/**
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* Deflate#onData(chunk) -> Void
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*
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* - chunk (Uint8Array|Array)- ouput data. Type of array depends
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* - chunk (Uint8Array|Array): ouput data. Type of array depends
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* on js engine support.
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*
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* By default, it store chunks in [Deflate.chunks]. Override this handler, if
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* you need another behaviour.
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* By default, stores data blocks in `chunks[]` property and glue
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* those in `onEnd`. Override this handler, if you need another behaviour.
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**/
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Deflate.prototype.onData = function(chunk) {
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this.chunks.push(chunk);
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@ -149,13 +179,12 @@ Deflate.prototype.onData = function(chunk) {
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/**
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* Deflate#onEnd(status) -> Void
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*
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* - status (Number) - deflate status. 0 (Z_OK) on success,
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* - status (Number): deflate status. 0 (Z_OK) on success,
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* other if not.
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*
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* Called once after you tell deflate that input stream complete. See
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* [Deflate.finish]. By default - join collected chunks, free memory and fill
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* states properties.
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* Called once after you tell deflate that input stream complete.
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* By default - join collected chunks, free memory and fill
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* `results` / `err` properties.
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**/
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Deflate.prototype.onEnd = function(status) {
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// On success - join
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@ -171,14 +200,13 @@ Deflate.prototype.onEnd = function(status) {
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/**
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* deflate(data, options) -> (Uint8Array|Array)
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*
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* deflate(data[, options]) -> Uint8Array|Array
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* - data (Uint8Array|Array): input data to compress.
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* - options (Object): zlib deflate options.
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*
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* Simple [Deflate] wrapper to compress data with one call.
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* Compress `data` with deflate alrorythm and `options`.
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*
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* Supported options:
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* Supported options are:
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*
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* - level
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* - windowBits
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@ -186,7 +214,7 @@ Deflate.prototype.onEnd = function(status) {
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* - strategy
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*
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* [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
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* for more information on these.
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* for more information on these.
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**/
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function deflate(input, options) {
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var deflator = new Deflate(options);
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@ -201,12 +229,12 @@ function deflate(input, options) {
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/**
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* deflateRaw(data, options) -> (Uint8Array|Array)
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*
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* deflateRaw(data[, options]) -> Uint8Array|Array
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* - data (Uint8Array|Array): input data to compress.
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* - options (Object): zlib deflate options.
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*
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* The same as [deflate], but auoput raw data, without wrapper.
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* The same as [[deflate]], but creates raw data, without wrapper
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* (header and adler32 crc).
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**/
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function deflateRaw(input, options) {
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options = options || {};
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@ -216,12 +244,12 @@ function deflateRaw(input, options) {
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/**
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* gzip(data, options) -> (Uint8Array|Array)
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*
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* gzip(data[, options]) -> Uint8Array|Array
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* - data (Uint8Array|Array): input data to compress.
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* - options (Object): zlib deflate options.
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*
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* The same as [deflate], but create gzip wrapper instead of deflate one.
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* The same as [[deflate]], but create gzip wrapper instead of
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* deflate one.
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**/
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function gzip(input, options) {
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options = options || {};
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@ -37,6 +37,7 @@ function cmpBuf(a, b) {
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for (var i=0, l=a.length; i<l; i++) {
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if (a[i] !== b[i]) {
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//console.log('pos: ' +i+ ' - ' + a[i].toString(16) + '/' + b[i].toString(16));
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return false;
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}
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}
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