From a9223e5336f2bb2655e58284f6e5aa5bd726c9ac Mon Sep 17 00:00:00 2001 From: coderaiser Date: Fri, 30 Jan 2015 05:54:23 -0500 Subject: [PATCH] feature(pako) rm --- json/modules.json | 11 - modules/pako/.bower.json | 39 - modules/pako/Gruntfile.js | 78 - modules/pako/HISTORY.md | 50 - modules/pako/LICENSE | 21 - modules/pako/README.md | 172 - modules/pako/bower.json | 23 - modules/pako/dist/pako.js | 6368 ------------------------- modules/pako/dist/pako.min.js | 3 - modules/pako/dist/pako_deflate.js | 3740 --------------- modules/pako/dist/pako_deflate.min.js | 2 - modules/pako/dist/pako_inflate.js | 3025 ------------ modules/pako/dist/pako_inflate.min.js | 2 - modules/pako/package.json | 34 - 14 files changed, 13568 deletions(-) delete mode 100644 modules/pako/.bower.json delete mode 100644 modules/pako/Gruntfile.js delete mode 100644 modules/pako/HISTORY.md delete mode 100644 modules/pako/LICENSE delete mode 100644 modules/pako/README.md delete mode 100644 modules/pako/bower.json delete mode 100644 modules/pako/dist/pako.js delete mode 100644 modules/pako/dist/pako.min.js delete mode 100644 modules/pako/dist/pako_deflate.js delete mode 100644 modules/pako/dist/pako_deflate.min.js delete mode 100644 modules/pako/dist/pako_inflate.js delete mode 100644 modules/pako/dist/pako_inflate.min.js delete mode 100644 modules/pako/package.json diff --git a/json/modules.json b/json/modules.json index c3c62a05..7f7f6a28 100644 --- a/json/modules.json +++ b/json/modules.json @@ -21,17 +21,6 @@ "local": "/socket.io/socket.io.js", "remote": "//cdn.socket.io/socket.io-{{ version }}.js" }, { - "name": "ace", - "version": "1.1.8", - "date": "08.11.14", - "local": "/modules/ace-builds/src-noconflict/ace.js", - "remote": "//cdn.jsdelivr.net/ace/{{ version }}/noconflict/ace.js" - }, { - "name": "pako", - "version": "0.2.5", - "local": "/modules/pako/dist/pako.min.js", - "remote": "//cdn.jsdelivr.net/pako/{{ version }}/pako.min.js" - },{ "name": "fancybox", "version": "2.1.5", "local": [ diff --git a/modules/pako/.bower.json b/modules/pako/.bower.json deleted file mode 100644 index 58d53c79..00000000 --- a/modules/pako/.bower.json +++ /dev/null @@ -1,39 +0,0 @@ -{ - "name": "pako", - "main": "dist/pako.js", - "homepage": "https://github.com/nodeca/pako", - "authors": [ - "Andrei Tuputcyn ", - "Vitaly Puzrin " - ], - "description": "deflate / inflate / gzip for bworser - very fast zlib port", - "keywords": [ - "zlib", - "deflate", - "inflate", - "gzip" - ], - "license": "MIT", - "ignore": [ - "**/.*", - "node_modules", - "bower_components", - "test", - "Makefile", - "index*", - "lib", - "benchmark", - "coverage" - ], - "version": "0.2.5", - "_release": "0.2.5", - "_resolution": { - "type": "version", - "tag": "0.2.5", - "commit": "eda5a97b543decd7e712534fa4cfcc88b85dc4ff" - }, - "_source": "git://github.com/nodeca/pako.git", - "_target": "~0.2.5", - "_originalSource": "pako", - "_direct": true -} \ No newline at end of file diff --git a/modules/pako/Gruntfile.js b/modules/pako/Gruntfile.js deleted file mode 100644 index 33b57519..00000000 --- a/modules/pako/Gruntfile.js +++ /dev/null @@ -1,78 +0,0 @@ -'use strict'; - - -module.exports = function(grunt) { - var browsers = [{ - browserName: 'iphone', - platform: 'OS X 10.8', - version: '6' - }, { - browserName: 'android', - platform: 'Linux', - version: '4.0' - }, { - browserName: 'firefox', - platform: 'XP', - version: '27' - }, { - browserName: 'chrome', - platform: 'XP', - version: '32' - }, { - browserName: 'internet explorer', - platform: 'WIN8', - version: '10' - }, { - browserName: 'internet explorer', - platform: 'VISTA', - version: '9' - }, { - browserName: 'internet explorer', - platform: 'Windows 7', - version: '8' - }, { - browserName: 'internet explorer', - platform: 'XP', - version: '7' - }, {/* - browserName: 'opera', - platform: 'Windows 2008', - version: '12' - }, {*/ - browserName: 'safari', - platform: 'OS X 10.8', - version: '6' - }]; - - - grunt.initConfig({ - connect: { - server: { - options: { - base: '', - port: 9999 - } - } - }, - 'saucelabs-mocha': { - all: { - options: { - urls: ['http://127.0.0.1:9999/test/browser/test.html'], - build: process.env.TRAVIS_JOB_NUMBER || ('local' + ~~(Math.random()*1000)), - browsers: browsers, - throttled: 3, - testname: process.env.SAUCE_PROJ || 'mocha tests' - } - } - }, - watch: {} - }); - - // Loading dependencies - for (var key in grunt.file.readJSON('package.json').devDependencies) { - if (key !== 'grunt' && key.indexOf('grunt') === 0) { grunt.loadNpmTasks(key); } - } - - //grunt.registerTask('dev', ['connect', 'watch']); - grunt.registerTask('test', ['connect', 'saucelabs-mocha']); -}; diff --git a/modules/pako/HISTORY.md b/modules/pako/HISTORY.md deleted file mode 100644 index b8526001..00000000 --- a/modules/pako/HISTORY.md +++ /dev/null @@ -1,50 +0,0 @@ -0.2.5 / 2014-07-19 ------------------- - -- Workaround for Chrome 38.0.2096.0 script parser bug, #30 - - -0.2.4 / 2014-07-07 ------------------- - -- Fixed bug in inflate wrapper, #29 - - -0.2.3 / 2014-06-09 ------------------- - -- Maintenance release, dependencies update. - - -0.2.2 / 2014-06-04 ------------------- - -- Fixed iOS 5.1 Safary issue with `apply(typed_array)`, #26. - - -0.2.1 / 2014-05-01 ------------------- - -- Fixed collision on switch dynamic/fixed tables. - - -0.2.0 / 2014-04-18 ------------------- - -- Added custom gzip headers support. -- Added strings support. -- Improved memory allocations for small chunks. -- ZStream properties rename/cleanup. -- More coverage tests. - - -0.1.1 / 2014-03-20 ------------------- - -- Bugfixes for inflate/deflate. - - -0.1.0 / 2014-03-15 ------------------- - -- First release. diff --git a/modules/pako/LICENSE b/modules/pako/LICENSE deleted file mode 100644 index e6c9e5a5..00000000 --- a/modules/pako/LICENSE +++ /dev/null @@ -1,21 +0,0 @@ -(The MIT License) - -Copyright (C) 2014 by Vitaly Puzrin - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in -all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -THE SOFTWARE. diff --git a/modules/pako/README.md b/modules/pako/README.md deleted file mode 100644 index 39424e4b..00000000 --- a/modules/pako/README.md +++ /dev/null @@ -1,172 +0,0 @@ -pako - zlib port to javascript, very fast! -========================================== - -[![Build Status](https://travis-ci.org/nodeca/pako.svg?branch=master)](https://travis-ci.org/nodeca/pako) -[![NPM version](https://img.shields.io/npm/v/pako.svg)](https://www.npmjs.org/package/pako) - -__Why pako is cool:__ - -- Almost as fast in modern JS engines as C implementation (see benchmarks). -- Works in browsers, you can browserify any separate component. -- Chunking support for big blobs. -- Results are binary equal to well known [zlib](http://www.zlib.net/) (now v1.2.8 ported). - -This project was done to understand how fast JS can be and is it necessary to -develop native C modules for CPU-intensive tasks. Enjoy the result! - - -__Famous projects, using pako:__ - -- [browserify](http://browserify.org/) (via [browserify-zlib](https://github.com/devongovett/browserify-zlib)) -- [JSZip](http://stuk.github.io/jszip/) -- [mincer](https://github.com/nodeca/mincer) -- [JS-Git](https://github.com/creationix/js-git) and - [Tedit](https://chrome.google.com/webstore/detail/tedit-development-environ/ooekdijbnbbjdfjocaiflnjgoohnblgf) - by [@creatronix](https://github.com/creationix) - - - -__Benchmarks:__ - -``` -node v0.10.26, 1mb sample: - - deflate-dankogai x 4.73 ops/sec ±0.82% (15 runs sampled) - deflate-gildas x 4.58 ops/sec ±2.33% (15 runs sampled) - deflate-imaya x 3.22 ops/sec ±3.95% (12 runs sampled) - ! deflate-pako x 6.99 ops/sec ±0.51% (21 runs sampled) - deflate-pako-string x 5.89 ops/sec ±0.77% (18 runs sampled) - deflate-pako-untyped x 4.39 ops/sec ±1.58% (14 runs sampled) - * deflate-zlib x 14.71 ops/sec ±4.23% (59 runs sampled) - inflate-dankogai x 32.16 ops/sec ±0.13% (56 runs sampled) - inflate-imaya x 30.35 ops/sec ±0.92% (53 runs sampled) - ! inflate-pako x 69.89 ops/sec ±1.46% (71 runs sampled) - inflate-pako-string x 19.22 ops/sec ±1.86% (49 runs sampled) - inflate-pako-untyped x 17.19 ops/sec ±0.85% (32 runs sampled) - * inflate-zlib x 70.03 ops/sec ±1.64% (81 runs sampled) - -node v0.11.12, 1mb sample: - - deflate-dankogai x 5.60 ops/sec ±0.49% (17 runs sampled) - deflate-gildas x 5.06 ops/sec ±6.00% (16 runs sampled) - deflate-imaya x 3.52 ops/sec ±3.71% (13 runs sampled) - ! deflate-pako x 11.52 ops/sec ±0.22% (32 runs sampled) - deflate-pako-string x 9.53 ops/sec ±1.12% (27 runs sampled) - deflate-pako-untyped x 5.44 ops/sec ±0.72% (17 runs sampled) - * deflate-zlib x 14.05 ops/sec ±3.34% (63 runs sampled) - inflate-dankogai x 42.19 ops/sec ±0.09% (56 runs sampled) - inflate-imaya x 79.68 ops/sec ±1.07% (68 runs sampled) - ! inflate-pako x 97.52 ops/sec ±0.83% (80 runs sampled) - inflate-pako-string x 45.19 ops/sec ±1.69% (57 runs sampled) - inflate-pako-untyped x 24.35 ops/sec ±2.59% (40 runs sampled) - * inflate-zlib x 60.32 ops/sec ±1.36% (69 runs sampled) -``` - -zlib's test is partialy afferted by marshling (that make sense for inflate only). -You can change deflate level to 0 in benchmark source, to investigate details. -For deflate level 6 results can be considered as correct. - -__Install:__ - -node.js: - -``` -npm install pako -``` - -browser: - -``` -bower install pako -``` - - -Example & API -------------- - -Full docs - http://nodeca.github.io/pako/ - -```javascript -var pako = require('pako'); - -// Deflate -// -var input = new Uint8Array(); -//... fill input data here -var output = pako.deflate(input); - -// Inflate (simple wrapper can throw exception on broken stream) -// -var compressed = new Uint8Array(); -//... fill data to uncompress here -try { - var result = pako.inflate(compressed); -catch (err) { - console.log(err); -} - -// -// Alternate interface for chunking & without exceptions -// - -var inflator = new pako.Inflate(); - -inflator.push(chunk1, false); -inflator.push(chunk2, false); -... -inflator.push(chunkN, true); // true -> last chunk - -if (inflator.err) { - console.log(inflator.msg); -} - -var output = inflator.result; - -``` - -Sometime you can wish to work with strings. For example, to send -big objects as json to server. Pako detects input data type. You can -force output to be string with option `{ to: 'string' }`. - -```javascript -var pako = require('pako'); - -var test = { my: 'super', puper: [456, 567], awesome: 'pako' }; - -var binaryString = pako.deflate(JSON.stringify(test), { to: 'string' }); - -// -// Here you can do base64 encode, make xhr requests and so on. -// - -var restored = JSON.parse(pako.inflate(binaryString, { to: 'string' })); -``` - - -Notes ------ - -Pako does not contain some specific zlib functions: - -- __deflate__ - methods `deflateCopy`, `deflateBound`, `deflateParams`, - `deflatePending`, `deflatePrime`, `deflateSetDictionary`, `deflateTune`. -- __inflate__ - `inflateGetDictionary`, `inflateCopy`, `inflateMark`, - `inflatePrime`, `inflateSetDictionary`, `inflateSync`, `inflateSyncPoint`, - `inflateUndermine`. - - -Authors -------- - -- Andrey Tupitsin [@anrd83](https://github.com/andr83) -- Vitaly Puzrin [@puzrin](https://github.com/puzrin) - -Personal thanks to Vyacheslav Egorov ([@mraleph](https://github.com/mraleph)) -for his awesome tutoruals about optimising JS code for v8, -[IRHydra](http://mrale.ph/irhydra/) tool and his advices. - - -License -------- - -MIT diff --git a/modules/pako/bower.json b/modules/pako/bower.json deleted file mode 100644 index f0787474..00000000 --- a/modules/pako/bower.json +++ /dev/null @@ -1,23 +0,0 @@ -{ - "name": "pako", - "main": "dist/pako.js", - "homepage": "https://github.com/nodeca/pako", - "authors": [ - "Andrei Tuputcyn ", - "Vitaly Puzrin " - ], - "description": "deflate / inflate / gzip for bworser - very fast zlib port", - "keywords": ["zlib", "deflate", "inflate", "gzip"], - "license": "MIT", - "ignore": [ - "**/.*", - "node_modules", - "bower_components", - "test", - "Makefile", - "index*", - "lib", - "benchmark", - "coverage" - ] -} diff --git a/modules/pako/dist/pako.js b/modules/pako/dist/pako.js deleted file mode 100644 index 4c742065..00000000 --- a/modules/pako/dist/pako.js +++ /dev/null @@ -1,6368 +0,0 @@ -/* pako 0.2.5 nodeca/pako */!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.pako=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o Array - * - * Chunks of output data, if [[Deflate#onData]] not overriden. - **/ - -/** - * Deflate.result -> Uint8Array|Array - * - * Compressed result, generated by default [[Deflate#onData]] - * and [[Deflate#onEnd]] handlers. Filled after you push last chunk - * (call [[Deflate#push]] with `Z_FINISH` / `true` param). - **/ - -/** - * Deflate.err -> Number - * - * Error code after deflate finished. 0 (Z_OK) on success. - * You will not need it in real life, because deflate errors - * are possible only on wrong options or bad `onData` / `onEnd` - * custom handlers. - **/ - -/** - * Deflate.msg -> String - * - * Error message, if [[Deflate.err]] != 0 - **/ - - -/** - * new Deflate(options) - * - options (Object): zlib deflate options. - * - * Creates new deflator instance with specified params. Throws exception - * on bad params. Supported options: - * - * - `level` - * - `windowBits` - * - `memLevel` - * - `strategy` - * - * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced) - * for more information on these. - * - * Additional options, for internal needs: - * - * - `chunkSize` - size of generated data chunks (16K by default) - * - `raw` (Boolean) - do raw deflate - * - `gzip` (Boolean) - create gzip wrapper - * - `to` (String) - if equal to 'string', then result will be "binary string" - * (each char code [0..255]) - * - `header` (Object) - custom header for gzip - * - `text` (Boolean) - true if compressed data believed to be text - * - `time` (Number) - modification time, unix timestamp - * - `os` (Number) - operation system code - * - `extra` (Array) - array of bytes with extra data (max 65536) - * - `name` (String) - file name (binary string) - * - `comment` (String) - comment (binary string) - * - `hcrc` (Boolean) - true if header crc should be added - * - * ##### Example: - * - * ```javascript - * var pako = require('pako') - * , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9]) - * , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]); - * - * var deflate = new pako.Deflate({ level: 3}); - * - * deflate.push(chunk1, false); - * deflate.push(chunk2, true); // true -> last chunk - * - * if (deflate.err) { throw new Error(deflate.err); } - * - * console.log(deflate.result); - * ``` - **/ -var Deflate = function(options) { - - this.options = utils.assign({ - level: Z_DEFAULT_COMPRESSION, - method: Z_DEFLATED, - chunkSize: 16384, - windowBits: 15, - memLevel: 8, - strategy: Z_DEFAULT_STRATEGY, - to: '' - }, options || {}); - - var opt = this.options; - - if (opt.raw && (opt.windowBits > 0)) { - opt.windowBits = -opt.windowBits; - } - - else if (opt.gzip && (opt.windowBits > 0) && (opt.windowBits < 16)) { - opt.windowBits += 16; - } - - this.err = 0; // error code, if happens (0 = Z_OK) - this.msg = ''; // error message - this.ended = false; // used to avoid multiple onEnd() calls - this.chunks = []; // chunks of compressed data - - this.strm = new zstream(); - this.strm.avail_out = 0; - - var status = zlib_deflate.deflateInit2( - this.strm, - opt.level, - opt.method, - opt.windowBits, - opt.memLevel, - opt.strategy - ); - - if (status !== Z_OK) { - throw new Error(msg[status]); - } - - if (opt.header) { - zlib_deflate.deflateSetHeader(this.strm, opt.header); - } -}; - -/** - * Deflate#push(data[, mode]) -> Boolean - * - data (Uint8Array|Array|String): input data. Strings will be converted to - * utf8 byte sequence. - * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes. - * See constants. Skipped or `false` means Z_NO_FLUSH, `true` meansh Z_FINISH. - * - * Sends input data to deflate pipe, generating [[Deflate#onData]] calls with - * new compressed chunks. Returns `true` on success. The last data block must have - * mode Z_FINISH (or `true`). That flush internal pending buffers and call - * [[Deflate#onEnd]]. - * - * On fail call [[Deflate#onEnd]] with error code and return false. - * - * We strongly recommend to use `Uint8Array` on input for best speed (output - * array format is detected automatically). Also, don't skip last param and always - * use the same type in your code (boolean or number). That will improve JS speed. - * - * For regular `Array`-s make sure all elements are [0..255]. - * - * ##### Example - * - * ```javascript - * push(chunk, false); // push one of data chunks - * ... - * push(chunk, true); // push last chunk - * ``` - **/ -Deflate.prototype.push = function(data, mode) { - var strm = this.strm; - var chunkSize = this.options.chunkSize; - var status, _mode; - - if (this.ended) { return false; } - - _mode = (mode === ~~mode) ? mode : ((mode === true) ? Z_FINISH : Z_NO_FLUSH); - - // Convert data if needed - if (typeof data === 'string') { - // If we need to compress text, change encoding to utf8. - strm.input = strings.string2buf(data); - } else { - strm.input = data; - } - - strm.next_in = 0; - strm.avail_in = strm.input.length; - - do { - if (strm.avail_out === 0) { - strm.output = new utils.Buf8(chunkSize); - strm.next_out = 0; - strm.avail_out = chunkSize; - } - status = zlib_deflate.deflate(strm, _mode); /* no bad return value */ - - if (status !== Z_STREAM_END && status !== Z_OK) { - this.onEnd(status); - this.ended = true; - return false; - } - if (strm.avail_out === 0 || (strm.avail_in === 0 && _mode === Z_FINISH)) { - if (this.options.to === 'string') { - this.onData(strings.buf2binstring(utils.shrinkBuf(strm.output, strm.next_out))); - } else { - this.onData(utils.shrinkBuf(strm.output, strm.next_out)); - } - } - } while ((strm.avail_in > 0 || strm.avail_out === 0) && status !== Z_STREAM_END); - - // Finalize on the last chunk. - if (_mode === Z_FINISH) { - status = zlib_deflate.deflateEnd(this.strm); - this.onEnd(status); - this.ended = true; - return status === Z_OK; - } - - return true; -}; - - -/** - * Deflate#onData(chunk) -> Void - * - chunk (Uint8Array|Array|String): ouput data. Type of array depends - * on js engine support. When string output requested, each chunk - * will be string. - * - * By default, stores data blocks in `chunks[]` property and glue - * those in `onEnd`. Override this handler, if you need another behaviour. - **/ -Deflate.prototype.onData = function(chunk) { - this.chunks.push(chunk); -}; - - -/** - * Deflate#onEnd(status) -> Void - * - status (Number): deflate status. 0 (Z_OK) on success, - * other if not. - * - * Called once after you tell deflate that input stream complete - * or error happenned. By default - join collected chunks, - * free memory and fill `results` / `err` properties. - **/ -Deflate.prototype.onEnd = function(status) { - // On success - join - if (status === Z_OK) { - if (this.options.to === 'string') { - this.result = this.chunks.join(''); - } else { - this.result = utils.flattenChunks(this.chunks); - } - } - this.chunks = []; - this.err = status; - this.msg = this.strm.msg; -}; - - -/** - * deflate(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to compress. - * - options (Object): zlib deflate options. - * - * Compress `data` with deflate alrorythm and `options`. - * - * Supported options are: - * - * - level - * - windowBits - * - memLevel - * - strategy - * - * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced) - * for more information on these. - * - * Sugar (options): - * - * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify - * negative windowBits implicitly. - * - `to` (String) - if equal to 'string', then result will be "binary string" - * (each char code [0..255]) - * - * ##### Example: - * - * ```javascript - * var pako = require('pako') - * , data = Uint8Array([1,2,3,4,5,6,7,8,9]); - * - * console.log(pako.deflate(data)); - * ``` - **/ -function deflate(input, options) { - var deflator = new Deflate(options); - - deflator.push(input, true); - - // That will never happens, if you don't cheat with options :) - if (deflator.err) { throw deflator.msg; } - - return deflator.result; -} - - -/** - * deflateRaw(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to compress. - * - options (Object): zlib deflate options. - * - * The same as [[deflate]], but creates raw data, without wrapper - * (header and adler32 crc). - **/ -function deflateRaw(input, options) { - options = options || {}; - options.raw = true; - return deflate(input, options); -} - - -/** - * gzip(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to compress. - * - options (Object): zlib deflate options. - * - * The same as [[deflate]], but create gzip wrapper instead of - * deflate one. - **/ -function gzip(input, options) { - options = options || {}; - options.gzip = true; - return deflate(input, options); -} - - -exports.Deflate = Deflate; -exports.deflate = deflate; -exports.deflateRaw = deflateRaw; -exports.gzip = gzip; -},{"./utils/common":4,"./utils/strings":5,"./zlib/deflate.js":9,"./zlib/messages":14,"./zlib/zstream":16}],3:[function(_dereq_,module,exports){ -'use strict'; - - -var zlib_inflate = _dereq_('./zlib/inflate.js'); -var utils = _dereq_('./utils/common'); -var strings = _dereq_('./utils/strings'); -var c = _dereq_('./zlib/constants'); -var msg = _dereq_('./zlib/messages'); -var zstream = _dereq_('./zlib/zstream'); -var gzheader = _dereq_('./zlib/gzheader'); - - -/** - * class Inflate - * - * Generic JS-style wrapper for zlib calls. If you don't need - * streaming behaviour - use more simple functions: [[inflate]] - * and [[inflateRaw]]. - **/ - -/* internal - * inflate.chunks -> Array - * - * Chunks of output data, if [[Inflate#onData]] not overriden. - **/ - -/** - * Inflate.result -> Uint8Array|Array|String - * - * Uncompressed result, generated by default [[Inflate#onData]] - * and [[Inflate#onEnd]] handlers. Filled after you push last chunk - * (call [[Inflate#push]] with `Z_FINISH` / `true` param). - **/ - -/** - * Inflate.err -> Number - * - * Error code after inflate finished. 0 (Z_OK) on success. - * Should be checked if broken data possible. - **/ - -/** - * Inflate.msg -> String - * - * Error message, if [[Inflate.err]] != 0 - **/ - - -/** - * new Inflate(options) - * - options (Object): zlib inflate options. - * - * Creates new inflator instance with specified params. Throws exception - * on bad params. Supported options: - * - * - `windowBits` - * - * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced) - * for more information on these. - * - * Additional options, for internal needs: - * - * - `chunkSize` - size of generated data chunks (16K by default) - * - `raw` (Boolean) - do raw inflate - * - `to` (String) - if equal to 'string', then result will be converted - * from utf8 to utf16 (javascript) string. When string output requested, - * chunk length can differ from `chunkSize`, depending on content. - * - * By default, when no options set, autodetect deflate/gzip data format via - * wrapper header. - * - * ##### Example: - * - * ```javascript - * var pako = require('pako') - * , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9]) - * , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]); - * - * var inflate = new pako.Inflate({ level: 3}); - * - * inflate.push(chunk1, false); - * inflate.push(chunk2, true); // true -> last chunk - * - * if (inflate.err) { throw new Error(inflate.err); } - * - * console.log(inflate.result); - * ``` - **/ -var Inflate = function(options) { - - this.options = utils.assign({ - chunkSize: 16384, - windowBits: 0, - to: '' - }, options || {}); - - var opt = this.options; - - // Force window size for `raw` data, if not set directly, - // because we have no header for autodetect. - if (opt.raw && (opt.windowBits >= 0) && (opt.windowBits < 16)) { - opt.windowBits = -opt.windowBits; - if (opt.windowBits === 0) { opt.windowBits = -15; } - } - - // If `windowBits` not defined (and mode not raw) - set autodetect flag for gzip/deflate - if ((opt.windowBits >= 0) && (opt.windowBits < 16) && - !(options && options.windowBits)) { - opt.windowBits += 32; - } - - // Gzip header has no info about windows size, we can do autodetect only - // for deflate. So, if window size not set, force it to max when gzip possible - if ((opt.windowBits > 15) && (opt.windowBits < 48)) { - // bit 3 (16) -> gzipped data - // bit 4 (32) -> autodetect gzip/deflate - if ((opt.windowBits & 15) === 0) { - opt.windowBits |= 15; - } - } - - this.err = 0; // error code, if happens (0 = Z_OK) - this.msg = ''; // error message - this.ended = false; // used to avoid multiple onEnd() calls - this.chunks = []; // chunks of compressed data - - this.strm = new zstream(); - this.strm.avail_out = 0; - - var status = zlib_inflate.inflateInit2( - this.strm, - opt.windowBits - ); - - if (status !== c.Z_OK) { - throw new Error(msg[status]); - } - - this.header = new gzheader(); - - zlib_inflate.inflateGetHeader(this.strm, this.header); -}; - -/** - * Inflate#push(data[, mode]) -> Boolean - * - data (Uint8Array|Array|String): input data - * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes. - * See constants. Skipped or `false` means Z_NO_FLUSH, `true` meansh Z_FINISH. - * - * Sends input data to inflate pipe, generating [[Inflate#onData]] calls with - * new output chunks. Returns `true` on success. The last data block must have - * mode Z_FINISH (or `true`). That flush internal pending buffers and call - * [[Inflate#onEnd]]. - * - * On fail call [[Inflate#onEnd]] with error code and return false. - * - * We strongly recommend to use `Uint8Array` on input for best speed (output - * format is detected automatically). Also, don't skip last param and always - * use the same type in your code (boolean or number). That will improve JS speed. - * - * For regular `Array`-s make sure all elements are [0..255]. - * - * ##### Example - * - * ```javascript - * push(chunk, false); // push one of data chunks - * ... - * push(chunk, true); // push last chunk - * ``` - **/ -Inflate.prototype.push = function(data, mode) { - var strm = this.strm; - var chunkSize = this.options.chunkSize; - var status, _mode; - var next_out_utf8, tail, utf8str; - - if (this.ended) { return false; } - _mode = (mode === ~~mode) ? mode : ((mode === true) ? c.Z_FINISH : c.Z_NO_FLUSH); - - // Convert data if needed - if (typeof data === 'string') { - // Only binary strings can be decompressed on practice - strm.input = strings.binstring2buf(data); - } else { - strm.input = data; - } - - strm.next_in = 0; - strm.avail_in = strm.input.length; - - do { - if (strm.avail_out === 0) { - strm.output = new utils.Buf8(chunkSize); - strm.next_out = 0; - strm.avail_out = chunkSize; - } - - status = zlib_inflate.inflate(strm, c.Z_NO_FLUSH); /* no bad return value */ - - if (status !== c.Z_STREAM_END && status !== c.Z_OK) { - this.onEnd(status); - this.ended = true; - return false; - } - - if (strm.next_out) { - if (strm.avail_out === 0 || status === c.Z_STREAM_END || (strm.avail_in === 0 && _mode === c.Z_FINISH)) { - - if (this.options.to === 'string') { - - next_out_utf8 = strings.utf8border(strm.output, strm.next_out); - - tail = strm.next_out - next_out_utf8; - utf8str = strings.buf2string(strm.output, next_out_utf8); - - // move tail - strm.next_out = tail; - strm.avail_out = chunkSize - tail; - if (tail) { utils.arraySet(strm.output, strm.output, next_out_utf8, tail, 0); } - - this.onData(utf8str); - - } else { - this.onData(utils.shrinkBuf(strm.output, strm.next_out)); - } - } - } - } while ((strm.avail_in > 0) && status !== c.Z_STREAM_END); - - if (status === c.Z_STREAM_END) { - _mode = c.Z_FINISH; - } - // Finalize on the last chunk. - if (_mode === c.Z_FINISH) { - status = zlib_inflate.inflateEnd(this.strm); - this.onEnd(status); - this.ended = true; - return status === c.Z_OK; - } - - return true; -}; - - -/** - * Inflate#onData(chunk) -> Void - * - chunk (Uint8Array|Array|String): ouput data. Type of array depends - * on js engine support. When string output requested, each chunk - * will be string. - * - * By default, stores data blocks in `chunks[]` property and glue - * those in `onEnd`. Override this handler, if you need another behaviour. - **/ -Inflate.prototype.onData = function(chunk) { - this.chunks.push(chunk); -}; - - -/** - * Inflate#onEnd(status) -> Void - * - status (Number): inflate status. 0 (Z_OK) on success, - * other if not. - * - * Called once after you tell inflate that input stream complete - * or error happenned. By default - join collected chunks, - * free memory and fill `results` / `err` properties. - **/ -Inflate.prototype.onEnd = function(status) { - // On success - join - if (status === c.Z_OK) { - if (this.options.to === 'string') { - // Glue & convert here, until we teach pako to send - // utf8 alligned strings to onData - this.result = this.chunks.join(''); - } else { - this.result = utils.flattenChunks(this.chunks); - } - } - this.chunks = []; - this.err = status; - this.msg = this.strm.msg; -}; - - -/** - * inflate(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to decompress. - * - options (Object): zlib inflate options. - * - * Decompress `data` with inflate/ungzip and `options`. Autodetect - * format via wrapper header by default. That's why we don't provide - * separate `ungzip` method. - * - * Supported options are: - * - * - windowBits - * - * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced) - * for more information. - * - * Sugar (options): - * - * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify - * negative windowBits implicitly. - * - `to` (String) - if equal to 'string', then result will be converted - * from utf8 to utf16 (javascript) string. When string output requested, - * chunk length can differ from `chunkSize`, depending on content. - * - * - * ##### Example: - * - * ```javascript - * var pako = require('pako') - * , input = pako.deflate([1,2,3,4,5,6,7,8,9]) - * , output; - * - * try { - * output = pako.inflate(input); - * } catch (err) - * console.log(err); - * } - * ``` - **/ -function inflate(input, options) { - var inflator = new Inflate(options); - - inflator.push(input, true); - - // That will never happens, if you don't cheat with options :) - if (inflator.err) { throw inflator.msg; } - - return inflator.result; -} - - -/** - * inflateRaw(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to decompress. - * - options (Object): zlib inflate options. - * - * The same as [[inflate]], but creates raw data, without wrapper - * (header and adler32 crc). - **/ -function inflateRaw(input, options) { - options = options || {}; - options.raw = true; - return inflate(input, options); -} - - -/** - * ungzip(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to decompress. - * - options (Object): zlib inflate options. - * - * Just shortcut to [[inflate]], because it autodetects format - * by header.content. Done for convenience. - **/ - - -exports.Inflate = Inflate; -exports.inflate = inflate; -exports.inflateRaw = inflateRaw; -exports.ungzip = inflate; - -},{"./utils/common":4,"./utils/strings":5,"./zlib/constants":7,"./zlib/gzheader":10,"./zlib/inflate.js":12,"./zlib/messages":14,"./zlib/zstream":16}],4:[function(_dereq_,module,exports){ -'use strict'; - - -var TYPED_OK = (typeof Uint8Array !== 'undefined') && - (typeof Uint16Array !== 'undefined') && - (typeof Int32Array !== 'undefined'); - - -exports.assign = function (obj /*from1, from2, from3, ...*/) { - var sources = Array.prototype.slice.call(arguments, 1); - while (sources.length) { - var source = sources.shift(); - if (!source) { continue; } - - if (typeof(source) !== 'object') { - throw new TypeError(source + 'must be non-object'); - } - - for (var p in source) { - if (source.hasOwnProperty(p)) { - obj[p] = source[p]; - } - } - } - - return obj; -}; - - -// reduce buffer size, avoiding mem copy -exports.shrinkBuf = function (buf, size) { - if (buf.length === size) { return buf; } - if (buf.subarray) { return buf.subarray(0, size); } - buf.length = size; - return buf; -}; - - -var fnTyped = { - arraySet: function (dest, src, src_offs, len, dest_offs) { - if (src.subarray && dest.subarray) { - dest.set(src.subarray(src_offs, src_offs+len), dest_offs); - return; - } - // Fallback to ordinary array - for(var i=0; i= 252 ? 6 : i >= 248 ? 5 : i >= 240 ? 4 : i >= 224 ? 3 : i >= 192 ? 2 : 1); -} -_utf8len[254]=_utf8len[254]=1; // Invalid sequence start - - -// convert string to array (typed, when possible) -exports.string2buf = function (str) { - var buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0; - - // count binary size - for (m_pos = 0; m_pos < str_len; m_pos++) { - c = str.charCodeAt(m_pos); - if ((c & 0xfc00) === 0xd800 && (m_pos+1 < str_len)) { - c2 = str.charCodeAt(m_pos+1); - if ((c2 & 0xfc00) === 0xdc00) { - c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00); - m_pos++; - } - } - buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4; - } - - // allocate buffer - buf = new utils.Buf8(buf_len); - - // convert - for (i=0, m_pos = 0; i < buf_len; m_pos++) { - c = str.charCodeAt(m_pos); - if ((c & 0xfc00) === 0xd800 && (m_pos+1 < str_len)) { - c2 = str.charCodeAt(m_pos+1); - if ((c2 & 0xfc00) === 0xdc00) { - c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00); - m_pos++; - } - } - if (c < 0x80) { - /* one byte */ - buf[i++] = c; - } else if (c < 0x800) { - /* two bytes */ - buf[i++] = 0xC0 | (c >>> 6); - buf[i++] = 0x80 | (c & 0x3f); - } else if (c < 0x10000) { - /* three bytes */ - buf[i++] = 0xE0 | (c >>> 12); - buf[i++] = 0x80 | (c >>> 6 & 0x3f); - buf[i++] = 0x80 | (c & 0x3f); - } else { - /* four bytes */ - buf[i++] = 0xf0 | (c >>> 18); - buf[i++] = 0x80 | (c >>> 12 & 0x3f); - buf[i++] = 0x80 | (c >>> 6 & 0x3f); - buf[i++] = 0x80 | (c & 0x3f); - } - } - - return buf; -}; - -// Helper (used in 2 places) -function buf2binstring(buf, len) { - // use fallback for big arrays to avoid stack overflow - if (len < 65537) { - if ((buf.subarray && STR_APPLY_UIA_OK) || (!buf.subarray && STR_APPLY_OK)) { - return String.fromCharCode.apply(null, utils.shrinkBuf(buf, len)); - } - } - - var result = ''; - for(var i=0; i < len; i++) { - result += String.fromCharCode(buf[i]); - } - return result; -} - - -// Convert byte array to binary string -exports.buf2binstring = function(buf) { - return buf2binstring(buf, buf.length); -}; - - -// Convert binary string (typed, when possible) -exports.binstring2buf = function(str) { - var buf = new utils.Buf8(str.length); - for(var i=0, len=buf.length; i < len; i++) { - buf[i] = str.charCodeAt(i); - } - return buf; -}; - - -// convert array to string -exports.buf2string = function (buf, max) { - var i, out, c, c_len; - var len = max || buf.length; - - // Reserve max possible length (2 words per char) - // NB: by unknown reasons, Array is significantly faster for - // String.fromCharCode.apply than Uint16Array. - var utf16buf = new Array(len*2); - - for (out=0, i=0; i 4) { utf16buf[out++] = 0xfffd; i += c_len-1; continue; } - - // apply mask on first byte - c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07; - // join the rest - while (c_len > 1 && i < len) { - c = (c << 6) | (buf[i++] & 0x3f); - c_len--; - } - - // terminated by end of string? - if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; } - - if (c < 0x10000) { - utf16buf[out++] = c; - } else { - c -= 0x10000; - utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff); - utf16buf[out++] = 0xdc00 | (c & 0x3ff); - } - } - - return buf2binstring(utf16buf, out); -}; - - -// Calculate max possible position in utf8 buffer, -// that will not break sequence. If that's not possible -// - (very small limits) return max size as is. -// -// buf[] - utf8 bytes array -// max - length limit (mandatory); -exports.utf8border = function(buf, max) { - var pos; - - max = max || buf.length; - if (max > buf.length) { max = buf.length; } - - // go back from last position, until start of sequence found - pos = max-1; - while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; } - - // Fuckup - very small and broken sequence, - // return max, because we should return something anyway. - if (pos < 0) { return max; } - - // If we came to start of buffer - that means vuffer is too small, - // return max too. - if (pos === 0) { return max; } - - return (pos + _utf8len[buf[pos]] > max) ? pos : max; -}; - -},{"./common":4}],6:[function(_dereq_,module,exports){ -'use strict'; - -// Note: adler32 takes 12% for level 0 and 2% for level 6. -// It doesn't worth to make additional optimizationa as in original. -// Small size is preferable. - -function adler32(adler, buf, len, pos) { - var s1 = (adler & 0xffff) |0 - , s2 = ((adler >>> 16) & 0xffff) |0 - , n = 0; - - while (len !== 0) { - // Set limit ~ twice less than 5552, to keep - // s2 in 31-bits, because we force signed ints. - // in other case %= will fail. - n = len > 2000 ? 2000 : len; - len -= n; - - do { - s1 = (s1 + buf[pos++]) |0; - s2 = (s2 + s1) |0; - } while (--n); - - s1 %= 65521; - s2 %= 65521; - } - - return (s1 | (s2 << 16)) |0; -} - - -module.exports = adler32; -},{}],7:[function(_dereq_,module,exports){ -module.exports = { - - /* Allowed flush values; see deflate() and inflate() below for details */ - Z_NO_FLUSH: 0, - Z_PARTIAL_FLUSH: 1, - Z_SYNC_FLUSH: 2, - Z_FULL_FLUSH: 3, - Z_FINISH: 4, - Z_BLOCK: 5, - Z_TREES: 6, - - /* Return codes for the compression/decompression functions. Negative values - * are errors, positive values are used for special but normal events. - */ - Z_OK: 0, - Z_STREAM_END: 1, - Z_NEED_DICT: 2, - Z_ERRNO: -1, - Z_STREAM_ERROR: -2, - Z_DATA_ERROR: -3, - //Z_MEM_ERROR: -4, - Z_BUF_ERROR: -5, - //Z_VERSION_ERROR: -6, - - /* compression levels */ - Z_NO_COMPRESSION: 0, - Z_BEST_SPEED: 1, - Z_BEST_COMPRESSION: 9, - Z_DEFAULT_COMPRESSION: -1, - - - Z_FILTERED: 1, - Z_HUFFMAN_ONLY: 2, - Z_RLE: 3, - Z_FIXED: 4, - Z_DEFAULT_STRATEGY: 0, - - /* Possible values of the data_type field (though see inflate()) */ - Z_BINARY: 0, - Z_TEXT: 1, - //Z_ASCII: 1, // = Z_TEXT (deprecated) - Z_UNKNOWN: 2, - - /* The deflate compression method */ - Z_DEFLATED: 8 - //Z_NULL: null // Use -1 or null inline, depending on var type -}; -},{}],8:[function(_dereq_,module,exports){ -'use strict'; - -// Note: we can't get significant speed boost here. -// So write code to minimize size - no pregenerated tables -// and array tools dependencies. - - -// Use ordinary array, since untyped makes no boost here -function makeTable() { - var c, table = []; - - for(var n =0; n < 256; n++){ - c = n; - for(var k =0; k < 8; k++){ - c = ((c&1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1)); - } - table[n] = c; - } - - return table; -} - -// Create table on load. Just 255 signed longs. Not a problem. -var crcTable = makeTable(); - - -function crc32(crc, buf, len, pos) { - var t = crcTable - , end = pos + len; - - crc = crc ^ (-1); - - for (var i = pos; i < end; i++ ) { - crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF]; - } - - return (crc ^ (-1)); // >>> 0; -} - - -module.exports = crc32; -},{}],9:[function(_dereq_,module,exports){ -'use strict'; - -var utils = _dereq_('../utils/common'); -var trees = _dereq_('./trees'); -var adler32 = _dereq_('./adler32'); -var crc32 = _dereq_('./crc32'); -var msg = _dereq_('./messages'); - -/* Public constants ==========================================================*/ -/* ===========================================================================*/ - - -/* Allowed flush values; see deflate() and inflate() below for details */ -var Z_NO_FLUSH = 0; -var Z_PARTIAL_FLUSH = 1; -//var Z_SYNC_FLUSH = 2; -var Z_FULL_FLUSH = 3; -var Z_FINISH = 4; -var Z_BLOCK = 5; -//var Z_TREES = 6; - - -/* Return codes for the compression/decompression functions. Negative values - * are errors, positive values are used for special but normal events. - */ -var Z_OK = 0; -var Z_STREAM_END = 1; -//var Z_NEED_DICT = 2; -//var Z_ERRNO = -1; -var Z_STREAM_ERROR = -2; -var Z_DATA_ERROR = -3; -//var Z_MEM_ERROR = -4; -var Z_BUF_ERROR = -5; -//var Z_VERSION_ERROR = -6; - - -/* compression levels */ -//var Z_NO_COMPRESSION = 0; -//var Z_BEST_SPEED = 1; -//var Z_BEST_COMPRESSION = 9; -var Z_DEFAULT_COMPRESSION = -1; - - -var Z_FILTERED = 1; -var Z_HUFFMAN_ONLY = 2; -var Z_RLE = 3; -var Z_FIXED = 4; -var Z_DEFAULT_STRATEGY = 0; - -/* Possible values of the data_type field (though see inflate()) */ -//var Z_BINARY = 0; -//var Z_TEXT = 1; -//var Z_ASCII = 1; // = Z_TEXT -var Z_UNKNOWN = 2; - - -/* The deflate compression method */ -var Z_DEFLATED = 8; - -/*============================================================================*/ - - -var MAX_MEM_LEVEL = 9; -/* Maximum value for memLevel in deflateInit2 */ -var MAX_WBITS = 15; -/* 32K LZ77 window */ -var DEF_MEM_LEVEL = 8; - - -var LENGTH_CODES = 29; -/* number of length codes, not counting the special END_BLOCK code */ -var LITERALS = 256; -/* number of literal bytes 0..255 */ -var L_CODES = LITERALS + 1 + LENGTH_CODES; -/* number of Literal or Length codes, including the END_BLOCK code */ -var D_CODES = 30; -/* number of distance codes */ -var BL_CODES = 19; -/* number of codes used to transfer the bit lengths */ -var HEAP_SIZE = 2*L_CODES + 1; -/* maximum heap size */ -var MAX_BITS = 15; -/* All codes must not exceed MAX_BITS bits */ - -var MIN_MATCH = 3; -var MAX_MATCH = 258; -var MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1); - -var PRESET_DICT = 0x20; - -var INIT_STATE = 42; -var EXTRA_STATE = 69; -var NAME_STATE = 73; -var COMMENT_STATE = 91; -var HCRC_STATE = 103; -var BUSY_STATE = 113; -var FINISH_STATE = 666; - -var BS_NEED_MORE = 1; /* block not completed, need more input or more output */ -var BS_BLOCK_DONE = 2; /* block flush performed */ -var BS_FINISH_STARTED = 3; /* finish started, need only more output at next deflate */ -var BS_FINISH_DONE = 4; /* finish done, accept no more input or output */ - -var OS_CODE = 0x03; // Unix :) . Don't detect, use this default. - -function err(strm, errorCode) { - strm.msg = msg[errorCode]; - return errorCode; -} - -function rank(f) { - return ((f) << 1) - ((f) > 4 ? 9 : 0); -} - -function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } } - - -/* ========================================================================= - * Flush as much pending output as possible. All deflate() output goes - * through this function so some applications may wish to modify it - * to avoid allocating a large strm->output buffer and copying into it. - * (See also read_buf()). - */ -function flush_pending(strm) { - var s = strm.state; - - //_tr_flush_bits(s); - var len = s.pending; - if (len > strm.avail_out) { - len = strm.avail_out; - } - if (len === 0) { return; } - - utils.arraySet(strm.output, s.pending_buf, s.pending_out, len, strm.next_out); - strm.next_out += len; - s.pending_out += len; - strm.total_out += len; - strm.avail_out -= len; - s.pending -= len; - if (s.pending === 0) { - s.pending_out = 0; - } -} - - -function flush_block_only (s, last) { - trees._tr_flush_block(s, (s.block_start >= 0 ? s.block_start : -1), s.strstart - s.block_start, last); - s.block_start = s.strstart; - flush_pending(s.strm); -} - - -function put_byte(s, b) { - s.pending_buf[s.pending++] = b; -} - - -/* ========================================================================= - * Put a short in the pending buffer. The 16-bit value is put in MSB order. - * IN assertion: the stream state is correct and there is enough room in - * pending_buf. - */ -function putShortMSB(s, b) { -// put_byte(s, (Byte)(b >> 8)); -// put_byte(s, (Byte)(b & 0xff)); - s.pending_buf[s.pending++] = (b >>> 8) & 0xff; - s.pending_buf[s.pending++] = b & 0xff; -} - - -/* =========================================================================== - * Read a new buffer from the current input stream, update the adler32 - * and total number of bytes read. All deflate() input goes through - * this function so some applications may wish to modify it to avoid - * allocating a large strm->input buffer and copying from it. - * (See also flush_pending()). - */ -function read_buf(strm, buf, start, size) { - var len = strm.avail_in; - - if (len > size) { len = size; } - if (len === 0) { return 0; } - - strm.avail_in -= len; - - utils.arraySet(buf, strm.input, strm.next_in, len, start); - if (strm.state.wrap === 1) { - strm.adler = adler32(strm.adler, buf, len, start); - } - - else if (strm.state.wrap === 2) { - strm.adler = crc32(strm.adler, buf, len, start); - } - - strm.next_in += len; - strm.total_in += len; - - return len; -} - - -/* =========================================================================== - * Set match_start to the longest match starting at the given string and - * return its length. Matches shorter or equal to prev_length are discarded, - * in which case the result is equal to prev_length and match_start is - * garbage. - * IN assertions: cur_match is the head of the hash chain for the current - * string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1 - * OUT assertion: the match length is not greater than s->lookahead. - */ -function longest_match(s, cur_match) { - var chain_length = s.max_chain_length; /* max hash chain length */ - var scan = s.strstart; /* current string */ - var match; /* matched string */ - var len; /* length of current match */ - var best_len = s.prev_length; /* best match length so far */ - var nice_match = s.nice_match; /* stop if match long enough */ - var limit = (s.strstart > (s.w_size - MIN_LOOKAHEAD)) ? - s.strstart - (s.w_size - MIN_LOOKAHEAD) : 0/*NIL*/; - - var _win = s.window; // shortcut - - var wmask = s.w_mask; - var prev = s.prev; - - /* Stop when cur_match becomes <= limit. To simplify the code, - * we prevent matches with the string of window index 0. - */ - - var strend = s.strstart + MAX_MATCH; - var scan_end1 = _win[scan + best_len - 1]; - var scan_end = _win[scan + best_len]; - - /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16. - * It is easy to get rid of this optimization if necessary. - */ - // Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever"); - - /* Do not waste too much time if we already have a good match: */ - if (s.prev_length >= s.good_match) { - chain_length >>= 2; - } - /* Do not look for matches beyond the end of the input. This is necessary - * to make deflate deterministic. - */ - if (nice_match > s.lookahead) { nice_match = s.lookahead; } - - // Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead"); - - do { - // Assert(cur_match < s->strstart, "no future"); - match = cur_match; - - /* Skip to next match if the match length cannot increase - * or if the match length is less than 2. Note that the checks below - * for insufficient lookahead only occur occasionally for performance - * reasons. Therefore uninitialized memory will be accessed, and - * conditional jumps will be made that depend on those values. - * However the length of the match is limited to the lookahead, so - * the output of deflate is not affected by the uninitialized values. - */ - - if (_win[match + best_len] !== scan_end || - _win[match + best_len - 1] !== scan_end1 || - _win[match] !== _win[scan] || - _win[++match] !== _win[scan + 1]) { - continue; - } - - /* The check at best_len-1 can be removed because it will be made - * again later. (This heuristic is not always a win.) - * It is not necessary to compare scan[2] and match[2] since they - * are always equal when the other bytes match, given that - * the hash keys are equal and that HASH_BITS >= 8. - */ - scan += 2; - match++; - // Assert(*scan == *match, "match[2]?"); - - /* We check for insufficient lookahead only every 8th comparison; - * the 256th check will be made at strstart+258. - */ - do { - /*jshint noempty:false*/ - } while (_win[++scan] === _win[++match] && _win[++scan] === _win[++match] && - _win[++scan] === _win[++match] && _win[++scan] === _win[++match] && - _win[++scan] === _win[++match] && _win[++scan] === _win[++match] && - _win[++scan] === _win[++match] && _win[++scan] === _win[++match] && - scan < strend); - - // Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan"); - - len = MAX_MATCH - (strend - scan); - scan = strend - MAX_MATCH; - - if (len > best_len) { - s.match_start = cur_match; - best_len = len; - if (len >= nice_match) { - break; - } - scan_end1 = _win[scan + best_len - 1]; - scan_end = _win[scan + best_len]; - } - } while ((cur_match = prev[cur_match & wmask]) > limit && --chain_length !== 0); - - if (best_len <= s.lookahead) { - return best_len; - } - return s.lookahead; -} - - -/* =========================================================================== - * Fill the window when the lookahead becomes insufficient. - * Updates strstart and lookahead. - * - * IN assertion: lookahead < MIN_LOOKAHEAD - * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD - * At least one byte has been read, or avail_in == 0; reads are - * performed for at least two bytes (required for the zip translate_eol - * option -- not supported here). - */ -function fill_window(s) { - var _w_size = s.w_size; - var p, n, m, more, str; - - //Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead"); - - do { - more = s.window_size - s.lookahead - s.strstart; - - // JS ints have 32 bit, block below not needed - /* Deal with !@#$% 64K limit: */ - //if (sizeof(int) <= 2) { - // if (more == 0 && s->strstart == 0 && s->lookahead == 0) { - // more = wsize; - // - // } else if (more == (unsigned)(-1)) { - // /* Very unlikely, but possible on 16 bit machine if - // * strstart == 0 && lookahead == 1 (input done a byte at time) - // */ - // more--; - // } - //} - - - /* If the window is almost full and there is insufficient lookahead, - * move the upper half to the lower one to make room in the upper half. - */ - if (s.strstart >= _w_size + (_w_size - MIN_LOOKAHEAD)) { - - utils.arraySet(s.window, s.window, _w_size, _w_size, 0); - s.match_start -= _w_size; - s.strstart -= _w_size; - /* we now have strstart >= MAX_DIST */ - s.block_start -= _w_size; - - /* Slide the hash table (could be avoided with 32 bit values - at the expense of memory usage). We slide even when level == 0 - to keep the hash table consistent if we switch back to level > 0 - later. (Using level 0 permanently is not an optimal usage of - zlib, so we don't care about this pathological case.) - */ - - n = s.hash_size; - p = n; - do { - m = s.head[--p]; - s.head[p] = (m >= _w_size ? m - _w_size : 0); - } while (--n); - - n = _w_size; - p = n; - do { - m = s.prev[--p]; - s.prev[p] = (m >= _w_size ? m - _w_size : 0); - /* If n is not on any hash chain, prev[n] is garbage but - * its value will never be used. - */ - } while (--n); - - more += _w_size; - } - if (s.strm.avail_in === 0) { - break; - } - - /* If there was no sliding: - * strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 && - * more == window_size - lookahead - strstart - * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1) - * => more >= window_size - 2*WSIZE + 2 - * In the BIG_MEM or MMAP case (not yet supported), - * window_size == input_size + MIN_LOOKAHEAD && - * strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD. - * Otherwise, window_size == 2*WSIZE so more >= 2. - * If there was sliding, more >= WSIZE. So in all cases, more >= 2. - */ - //Assert(more >= 2, "more < 2"); - n = read_buf(s.strm, s.window, s.strstart + s.lookahead, more); - s.lookahead += n; - - /* Initialize the hash value now that we have some input: */ - if (s.lookahead + s.insert >= MIN_MATCH) { - str = s.strstart - s.insert; - s.ins_h = s.window[str]; - - /* UPDATE_HASH(s, s->ins_h, s->window[str + 1]); */ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + 1]) & s.hash_mask; -//#if MIN_MATCH != 3 -// Call update_hash() MIN_MATCH-3 more times -//#endif - while (s.insert) { - /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH-1]) & s.hash_mask; - - s.prev[str & s.w_mask] = s.head[s.ins_h]; - s.head[s.ins_h] = str; - str++; - s.insert--; - if (s.lookahead + s.insert < MIN_MATCH) { - break; - } - } - } - /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage, - * but this is not important since only literal bytes will be emitted. - */ - - } while (s.lookahead < MIN_LOOKAHEAD && s.strm.avail_in !== 0); - - /* If the WIN_INIT bytes after the end of the current data have never been - * written, then zero those bytes in order to avoid memory check reports of - * the use of uninitialized (or uninitialised as Julian writes) bytes by - * the longest match routines. Update the high water mark for the next - * time through here. WIN_INIT is set to MAX_MATCH since the longest match - * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead. - */ -// if (s.high_water < s.window_size) { -// var curr = s.strstart + s.lookahead; -// var init = 0; -// -// if (s.high_water < curr) { -// /* Previous high water mark below current data -- zero WIN_INIT -// * bytes or up to end of window, whichever is less. -// */ -// init = s.window_size - curr; -// if (init > WIN_INIT) -// init = WIN_INIT; -// zmemzero(s->window + curr, (unsigned)init); -// s->high_water = curr + init; -// } -// else if (s->high_water < (ulg)curr + WIN_INIT) { -// /* High water mark at or above current data, but below current data -// * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up -// * to end of window, whichever is less. -// */ -// init = (ulg)curr + WIN_INIT - s->high_water; -// if (init > s->window_size - s->high_water) -// init = s->window_size - s->high_water; -// zmemzero(s->window + s->high_water, (unsigned)init); -// s->high_water += init; -// } -// } -// -// Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD, -// "not enough room for search"); -} - -/* =========================================================================== - * Copy without compression as much as possible from the input stream, return - * the current block state. - * This function does not insert new strings in the dictionary since - * uncompressible data is probably not useful. This function is used - * only for the level=0 compression option. - * NOTE: this function should be optimized to avoid extra copying from - * window to pending_buf. - */ -function deflate_stored(s, flush) { - /* Stored blocks are limited to 0xffff bytes, pending_buf is limited - * to pending_buf_size, and each stored block has a 5 byte header: - */ - var max_block_size = 0xffff; - - if (max_block_size > s.pending_buf_size - 5) { - max_block_size = s.pending_buf_size - 5; - } - - /* Copy as much as possible from input to output: */ - for (;;) { - /* Fill the window as much as possible: */ - if (s.lookahead <= 1) { - - //Assert(s->strstart < s->w_size+MAX_DIST(s) || - // s->block_start >= (long)s->w_size, "slide too late"); -// if (!(s.strstart < s.w_size + (s.w_size - MIN_LOOKAHEAD) || -// s.block_start >= s.w_size)) { -// throw new Error("slide too late"); -// } - - fill_window(s); - if (s.lookahead === 0 && flush === Z_NO_FLUSH) { - return BS_NEED_MORE; - } - - if (s.lookahead === 0) { - break; - } - /* flush the current block */ - } - //Assert(s->block_start >= 0L, "block gone"); -// if (s.block_start < 0) throw new Error("block gone"); - - s.strstart += s.lookahead; - s.lookahead = 0; - - /* Emit a stored block if pending_buf will be full: */ - var max_start = s.block_start + max_block_size; - - if (s.strstart === 0 || s.strstart >= max_start) { - /* strstart == 0 is possible when wraparound on 16-bit machine */ - s.lookahead = s.strstart - max_start; - s.strstart = max_start; - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - - - } - /* Flush if we may have to slide, otherwise block_start may become - * negative and the data will be gone: - */ - if (s.strstart - s.block_start >= (s.w_size - MIN_LOOKAHEAD)) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - } - - s.insert = 0; - - if (flush === Z_FINISH) { - /*** FLUSH_BLOCK(s, 1); ***/ - flush_block_only(s, true); - if (s.strm.avail_out === 0) { - return BS_FINISH_STARTED; - } - /***/ - return BS_FINISH_DONE; - } - - if (s.strstart > s.block_start) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - - return BS_NEED_MORE; -} - -/* =========================================================================== - * Compress as much as possible from the input stream, return the current - * block state. - * This function does not perform lazy evaluation of matches and inserts - * new strings in the dictionary only for unmatched strings or for short - * matches. It is used only for the fast compression options. - */ -function deflate_fast(s, flush) { - var hash_head; /* head of the hash chain */ - var bflush; /* set if current block must be flushed */ - - for (;;) { - /* Make sure that we always have enough lookahead, except - * at the end of the input file. We need MAX_MATCH bytes - * for the next match, plus MIN_MATCH bytes to insert the - * string following the next match. - */ - if (s.lookahead < MIN_LOOKAHEAD) { - fill_window(s); - if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) { - return BS_NEED_MORE; - } - if (s.lookahead === 0) { - break; /* flush the current block */ - } - } - - /* Insert the string window[strstart .. strstart+2] in the - * dictionary, and set hash_head to the head of the hash chain: - */ - hash_head = 0/*NIL*/; - if (s.lookahead >= MIN_MATCH) { - /*** INSERT_STRING(s, s.strstart, hash_head); ***/ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask; - hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h]; - s.head[s.ins_h] = s.strstart; - /***/ - } - - /* Find the longest match, discarding those <= prev_length. - * At this point we have always match_length < MIN_MATCH - */ - if (hash_head !== 0/*NIL*/ && ((s.strstart - hash_head) <= (s.w_size - MIN_LOOKAHEAD))) { - /* To simplify the code, we prevent matches with the string - * of window index 0 (in particular we have to avoid a match - * of the string with itself at the start of the input file). - */ - s.match_length = longest_match(s, hash_head); - /* longest_match() sets match_start */ - } - if (s.match_length >= MIN_MATCH) { - // check_match(s, s.strstart, s.match_start, s.match_length); // for debug only - - /*** _tr_tally_dist(s, s.strstart - s.match_start, - s.match_length - MIN_MATCH, bflush); ***/ - bflush = trees._tr_tally(s, s.strstart - s.match_start, s.match_length - MIN_MATCH); - - s.lookahead -= s.match_length; - - /* Insert new strings in the hash table only if the match length - * is not too large. This saves time but degrades compression. - */ - if (s.match_length <= s.max_lazy_match/*max_insert_length*/ && s.lookahead >= MIN_MATCH) { - s.match_length--; /* string at strstart already in table */ - do { - s.strstart++; - /*** INSERT_STRING(s, s.strstart, hash_head); ***/ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask; - hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h]; - s.head[s.ins_h] = s.strstart; - /***/ - /* strstart never exceeds WSIZE-MAX_MATCH, so there are - * always MIN_MATCH bytes ahead. - */ - } while (--s.match_length !== 0); - s.strstart++; - } else - { - s.strstart += s.match_length; - s.match_length = 0; - s.ins_h = s.window[s.strstart]; - /* UPDATE_HASH(s, s.ins_h, s.window[s.strstart+1]); */ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + 1]) & s.hash_mask; - -//#if MIN_MATCH != 3 -// Call UPDATE_HASH() MIN_MATCH-3 more times -//#endif - /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not - * matter since it will be recomputed at next deflate call. - */ - } - } else { - /* No match, output a literal byte */ - //Tracevv((stderr,"%c", s.window[s.strstart])); - /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/ - bflush = trees._tr_tally(s, 0, s.window[s.strstart]); - - s.lookahead--; - s.strstart++; - } - if (bflush) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - } - s.insert = ((s.strstart < (MIN_MATCH-1)) ? s.strstart : MIN_MATCH-1); - if (flush === Z_FINISH) { - /*** FLUSH_BLOCK(s, 1); ***/ - flush_block_only(s, true); - if (s.strm.avail_out === 0) { - return BS_FINISH_STARTED; - } - /***/ - return BS_FINISH_DONE; - } - if (s.last_lit) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - return BS_BLOCK_DONE; -} - -/* =========================================================================== - * Same as above, but achieves better compression. We use a lazy - * evaluation for matches: a match is finally adopted only if there is - * no better match at the next window position. - */ -function deflate_slow(s, flush) { - var hash_head; /* head of hash chain */ - var bflush; /* set if current block must be flushed */ - - var max_insert; - - /* Process the input block. */ - for (;;) { - /* Make sure that we always have enough lookahead, except - * at the end of the input file. We need MAX_MATCH bytes - * for the next match, plus MIN_MATCH bytes to insert the - * string following the next match. - */ - if (s.lookahead < MIN_LOOKAHEAD) { - fill_window(s); - if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) { - return BS_NEED_MORE; - } - if (s.lookahead === 0) { break; } /* flush the current block */ - } - - /* Insert the string window[strstart .. strstart+2] in the - * dictionary, and set hash_head to the head of the hash chain: - */ - hash_head = 0/*NIL*/; - if (s.lookahead >= MIN_MATCH) { - /*** INSERT_STRING(s, s.strstart, hash_head); ***/ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask; - hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h]; - s.head[s.ins_h] = s.strstart; - /***/ - } - - /* Find the longest match, discarding those <= prev_length. - */ - s.prev_length = s.match_length; - s.prev_match = s.match_start; - s.match_length = MIN_MATCH-1; - - if (hash_head !== 0/*NIL*/ && s.prev_length < s.max_lazy_match && - s.strstart - hash_head <= (s.w_size-MIN_LOOKAHEAD)/*MAX_DIST(s)*/) { - /* To simplify the code, we prevent matches with the string - * of window index 0 (in particular we have to avoid a match - * of the string with itself at the start of the input file). - */ - s.match_length = longest_match(s, hash_head); - /* longest_match() sets match_start */ - - if (s.match_length <= 5 && - (s.strategy === Z_FILTERED || (s.match_length === MIN_MATCH && s.strstart - s.match_start > 4096/*TOO_FAR*/))) { - - /* If prev_match is also MIN_MATCH, match_start is garbage - * but we will ignore the current match anyway. - */ - s.match_length = MIN_MATCH-1; - } - } - /* If there was a match at the previous step and the current - * match is not better, output the previous match: - */ - if (s.prev_length >= MIN_MATCH && s.match_length <= s.prev_length) { - max_insert = s.strstart + s.lookahead - MIN_MATCH; - /* Do not insert strings in hash table beyond this. */ - - //check_match(s, s.strstart-1, s.prev_match, s.prev_length); - - /***_tr_tally_dist(s, s.strstart - 1 - s.prev_match, - s.prev_length - MIN_MATCH, bflush);***/ - bflush = trees._tr_tally(s, s.strstart - 1- s.prev_match, s.prev_length - MIN_MATCH); - /* Insert in hash table all strings up to the end of the match. - * strstart-1 and strstart are already inserted. If there is not - * enough lookahead, the last two strings are not inserted in - * the hash table. - */ - s.lookahead -= s.prev_length-1; - s.prev_length -= 2; - do { - if (++s.strstart <= max_insert) { - /*** INSERT_STRING(s, s.strstart, hash_head); ***/ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask; - hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h]; - s.head[s.ins_h] = s.strstart; - /***/ - } - } while (--s.prev_length !== 0); - s.match_available = 0; - s.match_length = MIN_MATCH-1; - s.strstart++; - - if (bflush) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - - } else if (s.match_available) { - /* If there was no match at the previous position, output a - * single literal. If there was a match but the current match - * is longer, truncate the previous match to a single literal. - */ - //Tracevv((stderr,"%c", s->window[s->strstart-1])); - /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/ - bflush = trees._tr_tally(s, 0, s.window[s.strstart-1]); - - if (bflush) { - /*** FLUSH_BLOCK_ONLY(s, 0) ***/ - flush_block_only(s, false); - /***/ - } - s.strstart++; - s.lookahead--; - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - } else { - /* There is no previous match to compare with, wait for - * the next step to decide. - */ - s.match_available = 1; - s.strstart++; - s.lookahead--; - } - } - //Assert (flush != Z_NO_FLUSH, "no flush?"); - if (s.match_available) { - //Tracevv((stderr,"%c", s->window[s->strstart-1])); - /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/ - bflush = trees._tr_tally(s, 0, s.window[s.strstart-1]); - - s.match_available = 0; - } - s.insert = s.strstart < MIN_MATCH-1 ? s.strstart : MIN_MATCH-1; - if (flush === Z_FINISH) { - /*** FLUSH_BLOCK(s, 1); ***/ - flush_block_only(s, true); - if (s.strm.avail_out === 0) { - return BS_FINISH_STARTED; - } - /***/ - return BS_FINISH_DONE; - } - if (s.last_lit) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - - return BS_BLOCK_DONE; -} - - -/* =========================================================================== - * For Z_RLE, simply look for runs of bytes, generate matches only of distance - * one. Do not maintain a hash table. (It will be regenerated if this run of - * deflate switches away from Z_RLE.) - */ -function deflate_rle(s, flush) { - var bflush; /* set if current block must be flushed */ - var prev; /* byte at distance one to match */ - var scan, strend; /* scan goes up to strend for length of run */ - - var _win = s.window; - - for (;;) { - /* Make sure that we always have enough lookahead, except - * at the end of the input file. We need MAX_MATCH bytes - * for the longest run, plus one for the unrolled loop. - */ - if (s.lookahead <= MAX_MATCH) { - fill_window(s); - if (s.lookahead <= MAX_MATCH && flush === Z_NO_FLUSH) { - return BS_NEED_MORE; - } - if (s.lookahead === 0) { break; } /* flush the current block */ - } - - /* See how many times the previous byte repeats */ - s.match_length = 0; - if (s.lookahead >= MIN_MATCH && s.strstart > 0) { - scan = s.strstart - 1; - prev = _win[scan]; - if (prev === _win[++scan] && prev === _win[++scan] && prev === _win[++scan]) { - strend = s.strstart + MAX_MATCH; - do { - /*jshint noempty:false*/ - } while (prev === _win[++scan] && prev === _win[++scan] && - prev === _win[++scan] && prev === _win[++scan] && - prev === _win[++scan] && prev === _win[++scan] && - prev === _win[++scan] && prev === _win[++scan] && - scan < strend); - s.match_length = MAX_MATCH - (strend - scan); - if (s.match_length > s.lookahead) { - s.match_length = s.lookahead; - } - } - //Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan"); - } - - /* Emit match if have run of MIN_MATCH or longer, else emit literal */ - if (s.match_length >= MIN_MATCH) { - //check_match(s, s.strstart, s.strstart - 1, s.match_length); - - /*** _tr_tally_dist(s, 1, s.match_length - MIN_MATCH, bflush); ***/ - bflush = trees._tr_tally(s, 1, s.match_length - MIN_MATCH); - - s.lookahead -= s.match_length; - s.strstart += s.match_length; - s.match_length = 0; - } else { - /* No match, output a literal byte */ - //Tracevv((stderr,"%c", s->window[s->strstart])); - /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/ - bflush = trees._tr_tally(s, 0, s.window[s.strstart]); - - s.lookahead--; - s.strstart++; - } - if (bflush) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - } - s.insert = 0; - if (flush === Z_FINISH) { - /*** FLUSH_BLOCK(s, 1); ***/ - flush_block_only(s, true); - if (s.strm.avail_out === 0) { - return BS_FINISH_STARTED; - } - /***/ - return BS_FINISH_DONE; - } - if (s.last_lit) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - return BS_BLOCK_DONE; -} - -/* =========================================================================== - * For Z_HUFFMAN_ONLY, do not look for matches. Do not maintain a hash table. - * (It will be regenerated if this run of deflate switches away from Huffman.) - */ -function deflate_huff(s, flush) { - var bflush; /* set if current block must be flushed */ - - for (;;) { - /* Make sure that we have a literal to write. */ - if (s.lookahead === 0) { - fill_window(s); - if (s.lookahead === 0) { - if (flush === Z_NO_FLUSH) { - return BS_NEED_MORE; - } - break; /* flush the current block */ - } - } - - /* Output a literal byte */ - s.match_length = 0; - //Tracevv((stderr,"%c", s->window[s->strstart])); - /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/ - bflush = trees._tr_tally(s, 0, s.window[s.strstart]); - s.lookahead--; - s.strstart++; - if (bflush) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - } - s.insert = 0; - if (flush === Z_FINISH) { - /*** FLUSH_BLOCK(s, 1); ***/ - flush_block_only(s, true); - if (s.strm.avail_out === 0) { - return BS_FINISH_STARTED; - } - /***/ - return BS_FINISH_DONE; - } - if (s.last_lit) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - return BS_BLOCK_DONE; -} - -/* Values for max_lazy_match, good_match and max_chain_length, depending on - * the desired pack level (0..9). The values given below have been tuned to - * exclude worst case performance for pathological files. Better values may be - * found for specific files. - */ -var Config = function (good_length, max_lazy, nice_length, max_chain, func) { - this.good_length = good_length; - this.max_lazy = max_lazy; - this.nice_length = nice_length; - this.max_chain = max_chain; - this.func = func; -}; - -var configuration_table; - -configuration_table = [ - /* good lazy nice chain */ - new Config(0, 0, 0, 0, deflate_stored), /* 0 store only */ - new Config(4, 4, 8, 4, deflate_fast), /* 1 max speed, no lazy matches */ - new Config(4, 5, 16, 8, deflate_fast), /* 2 */ - new Config(4, 6, 32, 32, deflate_fast), /* 3 */ - - new Config(4, 4, 16, 16, deflate_slow), /* 4 lazy matches */ - new Config(8, 16, 32, 32, deflate_slow), /* 5 */ - new Config(8, 16, 128, 128, deflate_slow), /* 6 */ - new Config(8, 32, 128, 256, deflate_slow), /* 7 */ - new Config(32, 128, 258, 1024, deflate_slow), /* 8 */ - new Config(32, 258, 258, 4096, deflate_slow) /* 9 max compression */ -]; - - -/* =========================================================================== - * Initialize the "longest match" routines for a new zlib stream - */ -function lm_init(s) { - s.window_size = 2 * s.w_size; - - /*** CLEAR_HASH(s); ***/ - zero(s.head); // Fill with NIL (= 0); - - /* Set the default configuration parameters: - */ - s.max_lazy_match = configuration_table[s.level].max_lazy; - s.good_match = configuration_table[s.level].good_length; - s.nice_match = configuration_table[s.level].nice_length; - s.max_chain_length = configuration_table[s.level].max_chain; - - s.strstart = 0; - s.block_start = 0; - s.lookahead = 0; - s.insert = 0; - s.match_length = s.prev_length = MIN_MATCH - 1; - s.match_available = 0; - s.ins_h = 0; -} - - -function DeflateState() { - this.strm = null; /* pointer back to this zlib stream */ - this.status = 0; /* as the name implies */ - this.pending_buf = null; /* output still pending */ - this.pending_buf_size = 0; /* size of pending_buf */ - this.pending_out = 0; /* next pending byte to output to the stream */ - this.pending = 0; /* nb of bytes in the pending buffer */ - this.wrap = 0; /* bit 0 true for zlib, bit 1 true for gzip */ - this.gzhead = null; /* gzip header information to write */ - this.gzindex = 0; /* where in extra, name, or comment */ - this.method = Z_DEFLATED; /* can only be DEFLATED */ - this.last_flush = -1; /* value of flush param for previous deflate call */ - - this.w_size = 0; /* LZ77 window size (32K by default) */ - this.w_bits = 0; /* log2(w_size) (8..16) */ - this.w_mask = 0; /* w_size - 1 */ - - this.window = null; - /* Sliding window. Input bytes are read into the second half of the window, - * and move to the first half later to keep a dictionary of at least wSize - * bytes. With this organization, matches are limited to a distance of - * wSize-MAX_MATCH bytes, but this ensures that IO is always - * performed with a length multiple of the block size. - */ - - this.window_size = 0; - /* Actual size of window: 2*wSize, except when the user input buffer - * is directly used as sliding window. - */ - - this.prev = null; - /* Link to older string with same hash index. To limit the size of this - * array to 64K, this link is maintained only for the last 32K strings. - * An index in this array is thus a window index modulo 32K. - */ - - this.head = null; /* Heads of the hash chains or NIL. */ - - this.ins_h = 0; /* hash index of string to be inserted */ - this.hash_size = 0; /* number of elements in hash table */ - this.hash_bits = 0; /* log2(hash_size) */ - this.hash_mask = 0; /* hash_size-1 */ - - this.hash_shift = 0; - /* Number of bits by which ins_h must be shifted at each input - * step. It must be such that after MIN_MATCH steps, the oldest - * byte no longer takes part in the hash key, that is: - * hash_shift * MIN_MATCH >= hash_bits - */ - - this.block_start = 0; - /* Window position at the beginning of the current output block. Gets - * negative when the window is moved backwards. - */ - - this.match_length = 0; /* length of best match */ - this.prev_match = 0; /* previous match */ - this.match_available = 0; /* set if previous match exists */ - this.strstart = 0; /* start of string to insert */ - this.match_start = 0; /* start of matching string */ - this.lookahead = 0; /* number of valid bytes ahead in window */ - - this.prev_length = 0; - /* Length of the best match at previous step. Matches not greater than this - * are discarded. This is used in the lazy match evaluation. - */ - - this.max_chain_length = 0; - /* To speed up deflation, hash chains are never searched beyond this - * length. A higher limit improves compression ratio but degrades the - * speed. - */ - - this.max_lazy_match = 0; - /* Attempt to find a better match only when the current match is strictly - * smaller than this value. This mechanism is used only for compression - * levels >= 4. - */ - // That's alias to max_lazy_match, don't use directly - //this.max_insert_length = 0; - /* Insert new strings in the hash table only if the match length is not - * greater than this length. This saves time but degrades compression. - * max_insert_length is used only for compression levels <= 3. - */ - - this.level = 0; /* compression level (1..9) */ - this.strategy = 0; /* favor or force Huffman coding*/ - - this.good_match = 0; - /* Use a faster search when the previous match is longer than this */ - - this.nice_match = 0; /* Stop searching when current match exceeds this */ - - /* used by trees.c: */ - - /* Didn't use ct_data typedef below to suppress compiler warning */ - - // struct ct_data_s dyn_ltree[HEAP_SIZE]; /* literal and length tree */ - // struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */ - // struct ct_data_s bl_tree[2*BL_CODES+1]; /* Huffman tree for bit lengths */ - - // Use flat array of DOUBLE size, with interleaved fata, - // because JS does not support effective - this.dyn_ltree = new utils.Buf16(HEAP_SIZE * 2); - this.dyn_dtree = new utils.Buf16((2*D_CODES+1) * 2); - this.bl_tree = new utils.Buf16((2*BL_CODES+1) * 2); - zero(this.dyn_ltree); - zero(this.dyn_dtree); - zero(this.bl_tree); - - this.l_desc = null; /* desc. for literal tree */ - this.d_desc = null; /* desc. for distance tree */ - this.bl_desc = null; /* desc. for bit length tree */ - - //ush bl_count[MAX_BITS+1]; - this.bl_count = new utils.Buf16(MAX_BITS+1); - /* number of codes at each bit length for an optimal tree */ - - //int heap[2*L_CODES+1]; /* heap used to build the Huffman trees */ - this.heap = new utils.Buf16(2*L_CODES+1); /* heap used to build the Huffman trees */ - zero(this.heap); - - this.heap_len = 0; /* number of elements in the heap */ - this.heap_max = 0; /* element of largest frequency */ - /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used. - * The same heap array is used to build all trees. - */ - - this.depth = new utils.Buf16(2*L_CODES+1); //uch depth[2*L_CODES+1]; - zero(this.depth); - /* Depth of each subtree used as tie breaker for trees of equal frequency - */ - - this.l_buf = 0; /* buffer index for literals or lengths */ - - this.lit_bufsize = 0; - /* Size of match buffer for literals/lengths. There are 4 reasons for - * limiting lit_bufsize to 64K: - * - frequencies can be kept in 16 bit counters - * - if compression is not successful for the first block, all input - * data is still in the window so we can still emit a stored block even - * when input comes from standard input. (This can also be done for - * all blocks if lit_bufsize is not greater than 32K.) - * - if compression is not successful for a file smaller than 64K, we can - * even emit a stored file instead of a stored block (saving 5 bytes). - * This is applicable only for zip (not gzip or zlib). - * - creating new Huffman trees less frequently may not provide fast - * adaptation to changes in the input data statistics. (Take for - * example a binary file with poorly compressible code followed by - * a highly compressible string table.) Smaller buffer sizes give - * fast adaptation but have of course the overhead of transmitting - * trees more frequently. - * - I can't count above 4 - */ - - this.last_lit = 0; /* running index in l_buf */ - - this.d_buf = 0; - /* Buffer index for distances. To simplify the code, d_buf and l_buf have - * the same number of elements. To use different lengths, an extra flag - * array would be necessary. - */ - - this.opt_len = 0; /* bit length of current block with optimal trees */ - this.static_len = 0; /* bit length of current block with static trees */ - this.matches = 0; /* number of string matches in current block */ - this.insert = 0; /* bytes at end of window left to insert */ - - - this.bi_buf = 0; - /* Output buffer. bits are inserted starting at the bottom (least - * significant bits). - */ - this.bi_valid = 0; - /* Number of valid bits in bi_buf. All bits above the last valid bit - * are always zero. - */ - - // Used for window memory init. We safely ignore it for JS. That makes - // sense only for pointers and memory check tools. - //this.high_water = 0; - /* High water mark offset in window for initialized bytes -- bytes above - * this are set to zero in order to avoid memory check warnings when - * longest match routines access bytes past the input. This is then - * updated to the new high water mark. - */ -} - - -function deflateResetKeep(strm) { - var s; - - if (!strm || !strm.state) { - return err(strm, Z_STREAM_ERROR); - } - - strm.total_in = strm.total_out = 0; - strm.data_type = Z_UNKNOWN; - - s = strm.state; - s.pending = 0; - s.pending_out = 0; - - if (s.wrap < 0) { - s.wrap = -s.wrap; - /* was made negative by deflate(..., Z_FINISH); */ - } - s.status = (s.wrap ? INIT_STATE : BUSY_STATE); - strm.adler = (s.wrap === 2) ? - 0 // crc32(0, Z_NULL, 0) - : - 1; // adler32(0, Z_NULL, 0) - s.last_flush = Z_NO_FLUSH; - trees._tr_init(s); - return Z_OK; -} - - -function deflateReset(strm) { - var ret = deflateResetKeep(strm); - if (ret === Z_OK) { - lm_init(strm.state); - } - return ret; -} - - -function deflateSetHeader(strm, head) { - if (!strm || !strm.state) { return Z_STREAM_ERROR; } - if (strm.state.wrap !== 2) { return Z_STREAM_ERROR; } - strm.state.gzhead = head; - return Z_OK; -} - - -function deflateInit2(strm, level, method, windowBits, memLevel, strategy) { - if (!strm) { // === Z_NULL - return Z_STREAM_ERROR; - } - var wrap = 1; - - if (level === Z_DEFAULT_COMPRESSION) { - level = 6; - } - - if (windowBits < 0) { /* suppress zlib wrapper */ - wrap = 0; - windowBits = -windowBits; - } - - else if (windowBits > 15) { - wrap = 2; /* write gzip wrapper instead */ - windowBits -= 16; - } - - - if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method !== Z_DEFLATED || - windowBits < 8 || windowBits > 15 || level < 0 || level > 9 || - strategy < 0 || strategy > Z_FIXED) { - return err(strm, Z_STREAM_ERROR); - } - - - if (windowBits === 8) { - windowBits = 9; - } - /* until 256-byte window bug fixed */ - - var s = new DeflateState(); - - strm.state = s; - s.strm = strm; - - s.wrap = wrap; - s.gzhead = null; - s.w_bits = windowBits; - s.w_size = 1 << s.w_bits; - s.w_mask = s.w_size - 1; - - s.hash_bits = memLevel + 7; - s.hash_size = 1 << s.hash_bits; - s.hash_mask = s.hash_size - 1; - s.hash_shift = ~~((s.hash_bits + MIN_MATCH - 1) / MIN_MATCH); - - s.window = new utils.Buf8(s.w_size * 2); - s.head = new utils.Buf16(s.hash_size); - s.prev = new utils.Buf16(s.w_size); - - // Don't need mem init magic for JS. - //s.high_water = 0; /* nothing written to s->window yet */ - - s.lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */ - - s.pending_buf_size = s.lit_bufsize * 4; - s.pending_buf = new utils.Buf8(s.pending_buf_size); - - s.d_buf = s.lit_bufsize >> 1; - s.l_buf = (1 + 2) * s.lit_bufsize; - - s.level = level; - s.strategy = strategy; - s.method = method; - - return deflateReset(strm); -} - -function deflateInit(strm, level) { - return deflateInit2(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY); -} - - -function deflate(strm, flush) { - var old_flush, s; - var beg, val; // for gzip header write only - - if (!strm || !strm.state || - flush > Z_BLOCK || flush < 0) { - return strm ? err(strm, Z_STREAM_ERROR) : Z_STREAM_ERROR; - } - - s = strm.state; - - if (!strm.output || - (!strm.input && strm.avail_in !== 0) || - (s.status === FINISH_STATE && flush !== Z_FINISH)) { - return err(strm, (strm.avail_out === 0) ? Z_BUF_ERROR : Z_STREAM_ERROR); - } - - s.strm = strm; /* just in case */ - old_flush = s.last_flush; - s.last_flush = flush; - - /* Write the header */ - if (s.status === INIT_STATE) { - - if (s.wrap === 2) { // GZIP header - strm.adler = 0; //crc32(0L, Z_NULL, 0); - put_byte(s, 31); - put_byte(s, 139); - put_byte(s, 8); - if (!s.gzhead) { // s->gzhead == Z_NULL - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, s.level === 9 ? 2 : - (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ? - 4 : 0)); - put_byte(s, OS_CODE); - s.status = BUSY_STATE; - } - else { - put_byte(s, (s.gzhead.text ? 1 : 0) + - (s.gzhead.hcrc ? 2 : 0) + - (!s.gzhead.extra ? 0 : 4) + - (!s.gzhead.name ? 0 : 8) + - (!s.gzhead.comment ? 0 : 16) - ); - put_byte(s, s.gzhead.time & 0xff); - put_byte(s, (s.gzhead.time >> 8) & 0xff); - put_byte(s, (s.gzhead.time >> 16) & 0xff); - put_byte(s, (s.gzhead.time >> 24) & 0xff); - put_byte(s, s.level === 9 ? 2 : - (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ? - 4 : 0)); - put_byte(s, s.gzhead.os & 0xff); - if (s.gzhead.extra && s.gzhead.extra.length) { - put_byte(s, s.gzhead.extra.length & 0xff); - put_byte(s, (s.gzhead.extra.length >> 8) & 0xff); - } - if (s.gzhead.hcrc) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending, 0); - } - s.gzindex = 0; - s.status = EXTRA_STATE; - } - } - else // DEFLATE header - { - var header = (Z_DEFLATED + ((s.w_bits - 8) << 4)) << 8; - var level_flags = -1; - - if (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2) { - level_flags = 0; - } else if (s.level < 6) { - level_flags = 1; - } else if (s.level === 6) { - level_flags = 2; - } else { - level_flags = 3; - } - header |= (level_flags << 6); - if (s.strstart !== 0) { header |= PRESET_DICT; } - header += 31 - (header % 31); - - s.status = BUSY_STATE; - putShortMSB(s, header); - - /* Save the adler32 of the preset dictionary: */ - if (s.strstart !== 0) { - putShortMSB(s, strm.adler >>> 16); - putShortMSB(s, strm.adler & 0xffff); - } - strm.adler = 1; // adler32(0L, Z_NULL, 0); - } - } - -//#ifdef GZIP - if (s.status === EXTRA_STATE) { - if (s.gzhead.extra/* != Z_NULL*/) { - beg = s.pending; /* start of bytes to update crc */ - - while (s.gzindex < (s.gzhead.extra.length & 0xffff)) { - if (s.pending === s.pending_buf_size) { - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - flush_pending(strm); - beg = s.pending; - if (s.pending === s.pending_buf_size) { - break; - } - } - put_byte(s, s.gzhead.extra[s.gzindex] & 0xff); - s.gzindex++; - } - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - if (s.gzindex === s.gzhead.extra.length) { - s.gzindex = 0; - s.status = NAME_STATE; - } - } - else { - s.status = NAME_STATE; - } - } - if (s.status === NAME_STATE) { - if (s.gzhead.name/* != Z_NULL*/) { - beg = s.pending; /* start of bytes to update crc */ - //int val; - - do { - if (s.pending === s.pending_buf_size) { - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - flush_pending(strm); - beg = s.pending; - if (s.pending === s.pending_buf_size) { - val = 1; - break; - } - } - // JS specific: little magic to add zero terminator to end of string - if (s.gzindex < s.gzhead.name.length) { - val = s.gzhead.name.charCodeAt(s.gzindex++) & 0xff; - } else { - val = 0; - } - put_byte(s, val); - } while (val !== 0); - - if (s.gzhead.hcrc && s.pending > beg){ - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - if (val === 0) { - s.gzindex = 0; - s.status = COMMENT_STATE; - } - } - else { - s.status = COMMENT_STATE; - } - } - if (s.status === COMMENT_STATE) { - if (s.gzhead.comment/* != Z_NULL*/) { - beg = s.pending; /* start of bytes to update crc */ - //int val; - - do { - if (s.pending === s.pending_buf_size) { - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - flush_pending(strm); - beg = s.pending; - if (s.pending === s.pending_buf_size) { - val = 1; - break; - } - } - // JS specific: little magic to add zero terminator to end of string - if (s.gzindex < s.gzhead.comment.length) { - val = s.gzhead.comment.charCodeAt(s.gzindex++) & 0xff; - } else { - val = 0; - } - put_byte(s, val); - } while (val !== 0); - - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - if (val === 0) { - s.status = HCRC_STATE; - } - } - else { - s.status = HCRC_STATE; - } - } - if (s.status === HCRC_STATE) { - if (s.gzhead.hcrc) { - if (s.pending + 2 > s.pending_buf_size) { - flush_pending(strm); - } - if (s.pending + 2 <= s.pending_buf_size) { - put_byte(s, strm.adler & 0xff); - put_byte(s, (strm.adler >> 8) & 0xff); - strm.adler = 0; //crc32(0L, Z_NULL, 0); - s.status = BUSY_STATE; - } - } - else { - s.status = BUSY_STATE; - } - } -//#endif - - /* Flush as much pending output as possible */ - if (s.pending !== 0) { - flush_pending(strm); - if (strm.avail_out === 0) { - /* Since avail_out is 0, deflate will be called again with - * more output space, but possibly with both pending and - * avail_in equal to zero. There won't be anything to do, - * but this is not an error situation so make sure we - * return OK instead of BUF_ERROR at next call of deflate: - */ - s.last_flush = -1; - return Z_OK; - } - - /* Make sure there is something to do and avoid duplicate consecutive - * flushes. For repeated and useless calls with Z_FINISH, we keep - * returning Z_STREAM_END instead of Z_BUF_ERROR. - */ - } else if (strm.avail_in === 0 && rank(flush) <= rank(old_flush) && - flush !== Z_FINISH) { - return err(strm, Z_BUF_ERROR); - } - - /* User must not provide more input after the first FINISH: */ - if (s.status === FINISH_STATE && strm.avail_in !== 0) { - return err(strm, Z_BUF_ERROR); - } - - /* Start a new block or continue the current one. - */ - if (strm.avail_in !== 0 || s.lookahead !== 0 || - (flush !== Z_NO_FLUSH && s.status !== FINISH_STATE)) { - var bstate = (s.strategy === Z_HUFFMAN_ONLY) ? deflate_huff(s, flush) : - (s.strategy === Z_RLE ? deflate_rle(s, flush) : - configuration_table[s.level].func(s, flush)); - - if (bstate === BS_FINISH_STARTED || bstate === BS_FINISH_DONE) { - s.status = FINISH_STATE; - } - if (bstate === BS_NEED_MORE || bstate === BS_FINISH_STARTED) { - if (strm.avail_out === 0) { - s.last_flush = -1; - /* avoid BUF_ERROR next call, see above */ - } - return Z_OK; - /* If flush != Z_NO_FLUSH && avail_out == 0, the next call - * of deflate should use the same flush parameter to make sure - * that the flush is complete. So we don't have to output an - * empty block here, this will be done at next call. This also - * ensures that for a very small output buffer, we emit at most - * one empty block. - */ - } - if (bstate === BS_BLOCK_DONE) { - if (flush === Z_PARTIAL_FLUSH) { - trees._tr_align(s); - } - else if (flush !== Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */ - - trees._tr_stored_block(s, 0, 0, false); - /* For a full flush, this empty block will be recognized - * as a special marker by inflate_sync(). - */ - if (flush === Z_FULL_FLUSH) { - /*** CLEAR_HASH(s); ***/ /* forget history */ - zero(s.head); // Fill with NIL (= 0); - - if (s.lookahead === 0) { - s.strstart = 0; - s.block_start = 0; - s.insert = 0; - } - } - } - flush_pending(strm); - if (strm.avail_out === 0) { - s.last_flush = -1; /* avoid BUF_ERROR at next call, see above */ - return Z_OK; - } - } - } - //Assert(strm->avail_out > 0, "bug2"); - //if (strm.avail_out <= 0) { throw new Error("bug2");} - - if (flush !== Z_FINISH) { return Z_OK; } - if (s.wrap <= 0) { return Z_STREAM_END; } - - /* Write the trailer */ - if (s.wrap === 2) { - put_byte(s, strm.adler & 0xff); - put_byte(s, (strm.adler >> 8) & 0xff); - put_byte(s, (strm.adler >> 16) & 0xff); - put_byte(s, (strm.adler >> 24) & 0xff); - put_byte(s, strm.total_in & 0xff); - put_byte(s, (strm.total_in >> 8) & 0xff); - put_byte(s, (strm.total_in >> 16) & 0xff); - put_byte(s, (strm.total_in >> 24) & 0xff); - } - else - { - putShortMSB(s, strm.adler >>> 16); - putShortMSB(s, strm.adler & 0xffff); - } - - flush_pending(strm); - /* If avail_out is zero, the application will call deflate again - * to flush the rest. - */ - if (s.wrap > 0) { s.wrap = -s.wrap; } - /* write the trailer only once! */ - return s.pending !== 0 ? Z_OK : Z_STREAM_END; -} - -function deflateEnd(strm) { - var status; - - if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) { - return Z_STREAM_ERROR; - } - - status = strm.state.status; - if (status !== INIT_STATE && - status !== EXTRA_STATE && - status !== NAME_STATE && - status !== COMMENT_STATE && - status !== HCRC_STATE && - status !== BUSY_STATE && - status !== FINISH_STATE - ) { - return err(strm, Z_STREAM_ERROR); - } - - strm.state = null; - - return status === BUSY_STATE ? err(strm, Z_DATA_ERROR) : Z_OK; -} - -/* ========================================================================= - * Copy the source state to the destination state - */ -//function deflateCopy(dest, source) { -// -//} - -exports.deflateInit = deflateInit; -exports.deflateInit2 = deflateInit2; -exports.deflateReset = deflateReset; -exports.deflateResetKeep = deflateResetKeep; -exports.deflateSetHeader = deflateSetHeader; -exports.deflate = deflate; -exports.deflateEnd = deflateEnd; -exports.deflateInfo = 'pako deflate (from Nodeca project)'; - -/* Not implemented -exports.deflateBound = deflateBound; -exports.deflateCopy = deflateCopy; -exports.deflateSetDictionary = deflateSetDictionary; -exports.deflateParams = deflateParams; -exports.deflatePending = deflatePending; -exports.deflatePrime = deflatePrime; -exports.deflateTune = deflateTune; -*/ -},{"../utils/common":4,"./adler32":6,"./crc32":8,"./messages":14,"./trees":15}],10:[function(_dereq_,module,exports){ -'use strict'; - - -function GZheader() { - /* true if compressed data believed to be text */ - this.text = 0; - /* modification time */ - this.time = 0; - /* extra flags (not used when writing a gzip file) */ - this.xflags = 0; - /* operating system */ - this.os = 0; - /* pointer to extra field or Z_NULL if none */ - this.extra = null; - /* extra field length (valid if extra != Z_NULL) */ - this.extra_len = 0; // Actually, we don't need it in JS, - // but leave for few code modifications - - // - // Setup limits is not necessary because in js we should not preallocate memory - // for inflate use constant limit in 65536 bytes - // - - /* space at extra (only when reading header) */ - // this.extra_max = 0; - /* pointer to zero-terminated file name or Z_NULL */ - this.name = ''; - /* space at name (only when reading header) */ - // this.name_max = 0; - /* pointer to zero-terminated comment or Z_NULL */ - this.comment = ''; - /* space at comment (only when reading header) */ - // this.comm_max = 0; - /* true if there was or will be a header crc */ - this.hcrc = 0; - /* true when done reading gzip header (not used when writing a gzip file) */ - this.done = false; -} - -module.exports = GZheader; -},{}],11:[function(_dereq_,module,exports){ -'use strict'; - -// See state defs from inflate.js -var BAD = 30; /* got a data error -- remain here until reset */ -var TYPE = 12; /* i: waiting for type bits, including last-flag bit */ - -/* - Decode literal, length, and distance codes and write out the resulting - literal and match bytes until either not enough input or output is - available, an end-of-block is encountered, or a data error is encountered. - When large enough input and output buffers are supplied to inflate(), for - example, a 16K input buffer and a 64K output buffer, more than 95% of the - inflate execution time is spent in this routine. - - Entry assumptions: - - state.mode === LEN - strm.avail_in >= 6 - strm.avail_out >= 258 - start >= strm.avail_out - state.bits < 8 - - On return, state.mode is one of: - - LEN -- ran out of enough output space or enough available input - TYPE -- reached end of block code, inflate() to interpret next block - BAD -- error in block data - - Notes: - - - The maximum input bits used by a length/distance pair is 15 bits for the - length code, 5 bits for the length extra, 15 bits for the distance code, - and 13 bits for the distance extra. This totals 48 bits, or six bytes. - Therefore if strm.avail_in >= 6, then there is enough input to avoid - checking for available input while decoding. - - - The maximum bytes that a single length/distance pair can output is 258 - bytes, which is the maximum length that can be coded. inflate_fast() - requires strm.avail_out >= 258 for each loop to avoid checking for - output space. - */ -module.exports = function inflate_fast(strm, start) { - var state; - var _in; /* local strm.input */ - var last; /* have enough input while in < last */ - var _out; /* local strm.output */ - var beg; /* inflate()'s initial strm.output */ - var end; /* while out < end, enough space available */ -//#ifdef INFLATE_STRICT - var dmax; /* maximum distance from zlib header */ -//#endif - var wsize; /* window size or zero if not using window */ - var whave; /* valid bytes in the window */ - var wnext; /* window write index */ - var window; /* allocated sliding window, if wsize != 0 */ - var hold; /* local strm.hold */ - var bits; /* local strm.bits */ - var lcode; /* local strm.lencode */ - var dcode; /* local strm.distcode */ - var lmask; /* mask for first level of length codes */ - var dmask; /* mask for first level of distance codes */ - var here; /* retrieved table entry */ - var op; /* code bits, operation, extra bits, or */ - /* window position, window bytes to copy */ - var len; /* match length, unused bytes */ - var dist; /* match distance */ - var from; /* where to copy match from */ - var from_source; - - - var input, output; // JS specific, because we have no pointers - - /* copy state to local variables */ - state = strm.state; - //here = state.here; - _in = strm.next_in; - input = strm.input; - last = _in + (strm.avail_in - 5); - _out = strm.next_out; - output = strm.output; - beg = _out - (start - strm.avail_out); - end = _out + (strm.avail_out - 257); -//#ifdef INFLATE_STRICT - dmax = state.dmax; -//#endif - wsize = state.wsize; - whave = state.whave; - wnext = state.wnext; - window = state.window; - hold = state.hold; - bits = state.bits; - lcode = state.lencode; - dcode = state.distcode; - lmask = (1 << state.lenbits) - 1; - dmask = (1 << state.distbits) - 1; - - - /* decode literals and length/distances until end-of-block or not enough - input data or output space */ - - top: - do { - if (bits < 15) { - hold += input[_in++] << bits; - bits += 8; - hold += input[_in++] << bits; - bits += 8; - } - - here = lcode[hold & lmask]; - - dolen: - for (;;) { // Goto emulation - op = here >>> 24/*here.bits*/; - hold >>>= op; - bits -= op; - op = (here >>> 16) & 0xff/*here.op*/; - if (op === 0) { /* literal */ - //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ? - // "inflate: literal '%c'\n" : - // "inflate: literal 0x%02x\n", here.val)); - output[_out++] = here & 0xffff/*here.val*/; - } - else if (op & 16) { /* length base */ - len = here & 0xffff/*here.val*/; - op &= 15; /* number of extra bits */ - if (op) { - if (bits < op) { - hold += input[_in++] << bits; - bits += 8; - } - len += hold & ((1 << op) - 1); - hold >>>= op; - bits -= op; - } - //Tracevv((stderr, "inflate: length %u\n", len)); - if (bits < 15) { - hold += input[_in++] << bits; - bits += 8; - hold += input[_in++] << bits; - bits += 8; - } - here = dcode[hold & dmask]; - - dodist: - for (;;) { // goto emulation - op = here >>> 24/*here.bits*/; - hold >>>= op; - bits -= op; - op = (here >>> 16) & 0xff/*here.op*/; - - if (op & 16) { /* distance base */ - dist = here & 0xffff/*here.val*/; - op &= 15; /* number of extra bits */ - if (bits < op) { - hold += input[_in++] << bits; - bits += 8; - if (bits < op) { - hold += input[_in++] << bits; - bits += 8; - } - } - dist += hold & ((1 << op) - 1); -//#ifdef INFLATE_STRICT - if (dist > dmax) { - strm.msg = 'invalid distance too far back'; - state.mode = BAD; - break top; - } -//#endif - hold >>>= op; - bits -= op; - //Tracevv((stderr, "inflate: distance %u\n", dist)); - op = _out - beg; /* max distance in output */ - if (dist > op) { /* see if copy from window */ - op = dist - op; /* distance back in window */ - if (op > whave) { - if (state.sane) { - strm.msg = 'invalid distance too far back'; - state.mode = BAD; - break top; - } - -// (!) This block is disabled in zlib defailts, -// don't enable it for binary compatibility -//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR -// if (len <= op - whave) { -// do { -// output[_out++] = 0; -// } while (--len); -// continue top; -// } -// len -= op - whave; -// do { -// output[_out++] = 0; -// } while (--op > whave); -// if (op === 0) { -// from = _out - dist; -// do { -// output[_out++] = output[from++]; -// } while (--len); -// continue top; -// } -//#endif - } - from = 0; // window index - from_source = window; - if (wnext === 0) { /* very common case */ - from += wsize - op; - if (op < len) { /* some from window */ - len -= op; - do { - output[_out++] = window[from++]; - } while (--op); - from = _out - dist; /* rest from output */ - from_source = output; - } - } - else if (wnext < op) { /* wrap around window */ - from += wsize + wnext - op; - op -= wnext; - if (op < len) { /* some from end of window */ - len -= op; - do { - output[_out++] = window[from++]; - } while (--op); - from = 0; - if (wnext < len) { /* some from start of window */ - op = wnext; - len -= op; - do { - output[_out++] = window[from++]; - } while (--op); - from = _out - dist; /* rest from output */ - from_source = output; - } - } - } - else { /* contiguous in window */ - from += wnext - op; - if (op < len) { /* some from window */ - len -= op; - do { - output[_out++] = window[from++]; - } while (--op); - from = _out - dist; /* rest from output */ - from_source = output; - } - } - while (len > 2) { - output[_out++] = from_source[from++]; - output[_out++] = from_source[from++]; - output[_out++] = from_source[from++]; - len -= 3; - } - if (len) { - output[_out++] = from_source[from++]; - if (len > 1) { - output[_out++] = from_source[from++]; - } - } - } - else { - from = _out - dist; /* copy direct from output */ - do { /* minimum length is three */ - output[_out++] = output[from++]; - output[_out++] = output[from++]; - output[_out++] = output[from++]; - len -= 3; - } while (len > 2); - if (len) { - output[_out++] = output[from++]; - if (len > 1) { - output[_out++] = output[from++]; - } - } - } - } - else if ((op & 64) === 0) { /* 2nd level distance code */ - here = dcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))]; - continue dodist; - } - else { - strm.msg = 'invalid distance code'; - state.mode = BAD; - break top; - } - - break; // need to emulate goto via "continue" - } - } - else if ((op & 64) === 0) { /* 2nd level length code */ - here = lcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))]; - continue dolen; - } - else if (op & 32) { /* end-of-block */ - //Tracevv((stderr, "inflate: end of block\n")); - state.mode = TYPE; - break top; - } - else { - strm.msg = 'invalid literal/length code'; - state.mode = BAD; - break top; - } - - break; // need to emulate goto via "continue" - } - } while (_in < last && _out < end); - - /* return unused bytes (on entry, bits < 8, so in won't go too far back) */ - len = bits >> 3; - _in -= len; - bits -= len << 3; - hold &= (1 << bits) - 1; - - /* update state and return */ - strm.next_in = _in; - strm.next_out = _out; - strm.avail_in = (_in < last ? 5 + (last - _in) : 5 - (_in - last)); - strm.avail_out = (_out < end ? 257 + (end - _out) : 257 - (_out - end)); - state.hold = hold; - state.bits = bits; - return; -}; - -},{}],12:[function(_dereq_,module,exports){ -'use strict'; - - -var utils = _dereq_('../utils/common'); -var adler32 = _dereq_('./adler32'); -var crc32 = _dereq_('./crc32'); -var inflate_fast = _dereq_('./inffast'); -var inflate_table = _dereq_('./inftrees'); - -var CODES = 0; -var LENS = 1; -var DISTS = 2; - -/* Public constants ==========================================================*/ -/* ===========================================================================*/ - - -/* Allowed flush values; see deflate() and inflate() below for details */ -//var Z_NO_FLUSH = 0; -//var Z_PARTIAL_FLUSH = 1; -//var Z_SYNC_FLUSH = 2; -//var Z_FULL_FLUSH = 3; -var Z_FINISH = 4; -var Z_BLOCK = 5; -var Z_TREES = 6; - - -/* Return codes for the compression/decompression functions. Negative values - * are errors, positive values are used for special but normal events. - */ -var Z_OK = 0; -var Z_STREAM_END = 1; -var Z_NEED_DICT = 2; -//var Z_ERRNO = -1; -var Z_STREAM_ERROR = -2; -var Z_DATA_ERROR = -3; -var Z_MEM_ERROR = -4; -var Z_BUF_ERROR = -5; -//var Z_VERSION_ERROR = -6; - -/* The deflate compression method */ -var Z_DEFLATED = 8; - - -/* STATES ====================================================================*/ -/* ===========================================================================*/ - - -var HEAD = 1; /* i: waiting for magic header */ -var FLAGS = 2; /* i: waiting for method and flags (gzip) */ -var TIME = 3; /* i: waiting for modification time (gzip) */ -var OS = 4; /* i: waiting for extra flags and operating system (gzip) */ -var EXLEN = 5; /* i: waiting for extra length (gzip) */ -var EXTRA = 6; /* i: waiting for extra bytes (gzip) */ -var NAME = 7; /* i: waiting for end of file name (gzip) */ -var COMMENT = 8; /* i: waiting for end of comment (gzip) */ -var HCRC = 9; /* i: waiting for header crc (gzip) */ -var DICTID = 10; /* i: waiting for dictionary check value */ -var DICT = 11; /* waiting for inflateSetDictionary() call */ -var TYPE = 12; /* i: waiting for type bits, including last-flag bit */ -var TYPEDO = 13; /* i: same, but skip check to exit inflate on new block */ -var STORED = 14; /* i: waiting for stored size (length and complement) */ -var COPY_ = 15; /* i/o: same as COPY below, but only first time in */ -var COPY = 16; /* i/o: waiting for input or output to copy stored block */ -var TABLE = 17; /* i: waiting for dynamic block table lengths */ -var LENLENS = 18; /* i: waiting for code length code lengths */ -var CODELENS = 19; /* i: waiting for length/lit and distance code lengths */ -var LEN_ = 20; /* i: same as LEN below, but only first time in */ -var LEN = 21; /* i: waiting for length/lit/eob code */ -var LENEXT = 22; /* i: waiting for length extra bits */ -var DIST = 23; /* i: waiting for distance code */ -var DISTEXT = 24; /* i: waiting for distance extra bits */ -var MATCH = 25; /* o: waiting for output space to copy string */ -var LIT = 26; /* o: waiting for output space to write literal */ -var CHECK = 27; /* i: waiting for 32-bit check value */ -var LENGTH = 28; /* i: waiting for 32-bit length (gzip) */ -var DONE = 29; /* finished check, done -- remain here until reset */ -var BAD = 30; /* got a data error -- remain here until reset */ -var MEM = 31; /* got an inflate() memory error -- remain here until reset */ -var SYNC = 32; /* looking for synchronization bytes to restart inflate() */ - -/* ===========================================================================*/ - - - -var ENOUGH_LENS = 852; -var ENOUGH_DISTS = 592; -//var ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS); - -var MAX_WBITS = 15; -/* 32K LZ77 window */ -var DEF_WBITS = MAX_WBITS; - - -function ZSWAP32(q) { - return (((q >>> 24) & 0xff) + - ((q >>> 8) & 0xff00) + - ((q & 0xff00) << 8) + - ((q & 0xff) << 24)); -} - - -function InflateState() { - this.mode = 0; /* current inflate mode */ - this.last = false; /* true if processing last block */ - this.wrap = 0; /* bit 0 true for zlib, bit 1 true for gzip */ - this.havedict = false; /* true if dictionary provided */ - this.flags = 0; /* gzip header method and flags (0 if zlib) */ - this.dmax = 0; /* zlib header max distance (INFLATE_STRICT) */ - this.check = 0; /* protected copy of check value */ - this.total = 0; /* protected copy of output count */ - // TODO: may be {} - this.head = null; /* where to save gzip header information */ - - /* sliding window */ - this.wbits = 0; /* log base 2 of requested window size */ - this.wsize = 0; /* window size or zero if not using window */ - this.whave = 0; /* valid bytes in the window */ - this.wnext = 0; /* window write index */ - this.window = null; /* allocated sliding window, if needed */ - - /* bit accumulator */ - this.hold = 0; /* input bit accumulator */ - this.bits = 0; /* number of bits in "in" */ - - /* for string and stored block copying */ - this.length = 0; /* literal or length of data to copy */ - this.offset = 0; /* distance back to copy string from */ - - /* for table and code decoding */ - this.extra = 0; /* extra bits needed */ - - /* fixed and dynamic code tables */ - this.lencode = null; /* starting table for length/literal codes */ - this.distcode = null; /* starting table for distance codes */ - this.lenbits = 0; /* index bits for lencode */ - this.distbits = 0; /* index bits for distcode */ - - /* dynamic table building */ - this.ncode = 0; /* number of code length code lengths */ - this.nlen = 0; /* number of length code lengths */ - this.ndist = 0; /* number of distance code lengths */ - this.have = 0; /* number of code lengths in lens[] */ - this.next = null; /* next available space in codes[] */ - - this.lens = new utils.Buf16(320); /* temporary storage for code lengths */ - this.work = new utils.Buf16(288); /* work area for code table building */ - - /* - because we don't have pointers in js, we use lencode and distcode directly - as buffers so we don't need codes - */ - //this.codes = new utils.Buf32(ENOUGH); /* space for code tables */ - this.lendyn = null; /* dynamic table for length/literal codes (JS specific) */ - this.distdyn = null; /* dynamic table for distance codes (JS specific) */ - this.sane = 0; /* if false, allow invalid distance too far */ - this.back = 0; /* bits back of last unprocessed length/lit */ - this.was = 0; /* initial length of match */ -} - -function inflateResetKeep(strm) { - var state; - - if (!strm || !strm.state) { return Z_STREAM_ERROR; } - state = strm.state; - strm.total_in = strm.total_out = state.total = 0; - strm.msg = ''; /*Z_NULL*/ - if (state.wrap) { /* to support ill-conceived Java test suite */ - strm.adler = state.wrap & 1; - } - state.mode = HEAD; - state.last = 0; - state.havedict = 0; - state.dmax = 32768; - state.head = null/*Z_NULL*/; - state.hold = 0; - state.bits = 0; - //state.lencode = state.distcode = state.next = state.codes; - state.lencode = state.lendyn = new utils.Buf32(ENOUGH_LENS); - state.distcode = state.distdyn = new utils.Buf32(ENOUGH_DISTS); - - state.sane = 1; - state.back = -1; - //Tracev((stderr, "inflate: reset\n")); - return Z_OK; -} - -function inflateReset(strm) { - var state; - - if (!strm || !strm.state) { return Z_STREAM_ERROR; } - state = strm.state; - state.wsize = 0; - state.whave = 0; - state.wnext = 0; - return inflateResetKeep(strm); - -} - -function inflateReset2(strm, windowBits) { - var wrap; - var state; - - /* get the state */ - if (!strm || !strm.state) { return Z_STREAM_ERROR; } - state = strm.state; - - /* extract wrap request from windowBits parameter */ - if (windowBits < 0) { - wrap = 0; - windowBits = -windowBits; - } - else { - wrap = (windowBits >> 4) + 1; - if (windowBits < 48) { - windowBits &= 15; - } - } - - /* set number of window bits, free window if different */ - if (windowBits && (windowBits < 8 || windowBits > 15)) { - return Z_STREAM_ERROR; - } - if (state.window !== null && state.wbits !== windowBits) { - state.window = null; - } - - /* update state and reset the rest of it */ - state.wrap = wrap; - state.wbits = windowBits; - return inflateReset(strm); -} - -function inflateInit2(strm, windowBits) { - var ret; - var state; - - if (!strm) { return Z_STREAM_ERROR; } - //strm.msg = Z_NULL; /* in case we return an error */ - - state = new InflateState(); - - //if (state === Z_NULL) return Z_MEM_ERROR; - //Tracev((stderr, "inflate: allocated\n")); - strm.state = state; - state.window = null/*Z_NULL*/; - ret = inflateReset2(strm, windowBits); - if (ret !== Z_OK) { - strm.state = null/*Z_NULL*/; - } - return ret; -} - -function inflateInit(strm) { - return inflateInit2(strm, DEF_WBITS); -} - - -/* - Return state with length and distance decoding tables and index sizes set to - fixed code decoding. Normally this returns fixed tables from inffixed.h. - If BUILDFIXED is defined, then instead this routine builds the tables the - first time it's called, and returns those tables the first time and - thereafter. This reduces the size of the code by about 2K bytes, in - exchange for a little execution time. However, BUILDFIXED should not be - used for threaded applications, since the rewriting of the tables and virgin - may not be thread-safe. - */ -var virgin = true; - -var lenfix, distfix; // We have no pointers in JS, so keep tables separate - -function fixedtables(state) { - /* build fixed huffman tables if first call (may not be thread safe) */ - if (virgin) { - var sym; - - lenfix = new utils.Buf32(512); - distfix = new utils.Buf32(32); - - /* literal/length table */ - sym = 0; - while (sym < 144) { state.lens[sym++] = 8; } - while (sym < 256) { state.lens[sym++] = 9; } - while (sym < 280) { state.lens[sym++] = 7; } - while (sym < 288) { state.lens[sym++] = 8; } - - inflate_table(LENS, state.lens, 0, 288, lenfix, 0, state.work, {bits: 9}); - - /* distance table */ - sym = 0; - while (sym < 32) { state.lens[sym++] = 5; } - - inflate_table(DISTS, state.lens, 0, 32, distfix, 0, state.work, {bits: 5}); - - /* do this just once */ - virgin = false; - } - - state.lencode = lenfix; - state.lenbits = 9; - state.distcode = distfix; - state.distbits = 5; -} - - -/* - Update the window with the last wsize (normally 32K) bytes written before - returning. If window does not exist yet, create it. This is only called - when a window is already in use, or when output has been written during this - inflate call, but the end of the deflate stream has not been reached yet. - It is also called to create a window for dictionary data when a dictionary - is loaded. - - Providing output buffers larger than 32K to inflate() should provide a speed - advantage, since only the last 32K of output is copied to the sliding window - upon return from inflate(), and since all distances after the first 32K of - output will fall in the output data, making match copies simpler and faster. - The advantage may be dependent on the size of the processor's data caches. - */ -function updatewindow(strm, src, end, copy) { - var dist; - var state = strm.state; - - /* if it hasn't been done already, allocate space for the window */ - if (state.window === null) { - state.wsize = 1 << state.wbits; - state.wnext = 0; - state.whave = 0; - - state.window = new utils.Buf8(state.wsize); - } - - /* copy state->wsize or less output bytes into the circular window */ - if (copy >= state.wsize) { - utils.arraySet(state.window,src, end - state.wsize, state.wsize, 0); - state.wnext = 0; - state.whave = state.wsize; - } - else { - dist = state.wsize - state.wnext; - if (dist > copy) { - dist = copy; - } - //zmemcpy(state->window + state->wnext, end - copy, dist); - utils.arraySet(state.window,src, end - copy, dist, state.wnext); - copy -= dist; - if (copy) { - //zmemcpy(state->window, end - copy, copy); - utils.arraySet(state.window,src, end - copy, copy, 0); - state.wnext = copy; - state.whave = state.wsize; - } - else { - state.wnext += dist; - if (state.wnext === state.wsize) { state.wnext = 0; } - if (state.whave < state.wsize) { state.whave += dist; } - } - } - return 0; -} - -function inflate(strm, flush) { - var state; - var input, output; // input/output buffers - var next; /* next input INDEX */ - var put; /* next output INDEX */ - var have, left; /* available input and output */ - var hold; /* bit buffer */ - var bits; /* bits in bit buffer */ - var _in, _out; /* save starting available input and output */ - var copy; /* number of stored or match bytes to copy */ - var from; /* where to copy match bytes from */ - var from_source; - var here = 0; /* current decoding table entry */ - var here_bits, here_op, here_val; // paked "here" denormalized (JS specific) - //var last; /* parent table entry */ - var last_bits, last_op, last_val; // paked "last" denormalized (JS specific) - var len; /* length to copy for repeats, bits to drop */ - var ret; /* return code */ - var hbuf = new utils.Buf8(4); /* buffer for gzip header crc calculation */ - var opts; - - var n; // temporary var for NEED_BITS - - var order = /* permutation of code lengths */ - [16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15]; - - - if (!strm || !strm.state || !strm.output || - (!strm.input && strm.avail_in !== 0)) { - return Z_STREAM_ERROR; - } - - state = strm.state; - if (state.mode === TYPE) { state.mode = TYPEDO; } /* skip check */ - - - //--- LOAD() --- - put = strm.next_out; - output = strm.output; - left = strm.avail_out; - next = strm.next_in; - input = strm.input; - have = strm.avail_in; - hold = state.hold; - bits = state.bits; - //--- - - _in = have; - _out = left; - ret = Z_OK; - - inf_leave: // goto emulation - for (;;) { - switch (state.mode) { - case HEAD: - if (state.wrap === 0) { - state.mode = TYPEDO; - break; - } - //=== NEEDBITS(16); - while (bits < 16) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if ((state.wrap & 2) && hold === 0x8b1f) { /* gzip header */ - state.check = 0/*crc32(0L, Z_NULL, 0)*/; - //=== CRC2(state.check, hold); - hbuf[0] = hold & 0xff; - hbuf[1] = (hold >>> 8) & 0xff; - state.check = crc32(state.check, hbuf, 2, 0); - //===// - - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = FLAGS; - break; - } - state.flags = 0; /* expect zlib header */ - if (state.head) { - state.head.done = false; - } - if (!(state.wrap & 1) || /* check if zlib header allowed */ - (((hold & 0xff)/*BITS(8)*/ << 8) + (hold >> 8)) % 31) { - strm.msg = 'incorrect header check'; - state.mode = BAD; - break; - } - if ((hold & 0x0f)/*BITS(4)*/ !== Z_DEFLATED) { - strm.msg = 'unknown compression method'; - state.mode = BAD; - break; - } - //--- DROPBITS(4) ---// - hold >>>= 4; - bits -= 4; - //---// - len = (hold & 0x0f)/*BITS(4)*/ + 8; - if (state.wbits === 0) { - state.wbits = len; - } - else if (len > state.wbits) { - strm.msg = 'invalid window size'; - state.mode = BAD; - break; - } - state.dmax = 1 << len; - //Tracev((stderr, "inflate: zlib header ok\n")); - strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/; - state.mode = hold & 0x200 ? DICTID : TYPE; - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - break; - case FLAGS: - //=== NEEDBITS(16); */ - while (bits < 16) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.flags = hold; - if ((state.flags & 0xff) !== Z_DEFLATED) { - strm.msg = 'unknown compression method'; - state.mode = BAD; - break; - } - if (state.flags & 0xe000) { - strm.msg = 'unknown header flags set'; - state.mode = BAD; - break; - } - if (state.head) { - state.head.text = ((hold >> 8) & 1); - } - if (state.flags & 0x0200) { - //=== CRC2(state.check, hold); - hbuf[0] = hold & 0xff; - hbuf[1] = (hold >>> 8) & 0xff; - state.check = crc32(state.check, hbuf, 2, 0); - //===// - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = TIME; - /* falls through */ - case TIME: - //=== NEEDBITS(32); */ - while (bits < 32) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if (state.head) { - state.head.time = hold; - } - if (state.flags & 0x0200) { - //=== CRC4(state.check, hold) - hbuf[0] = hold & 0xff; - hbuf[1] = (hold >>> 8) & 0xff; - hbuf[2] = (hold >>> 16) & 0xff; - hbuf[3] = (hold >>> 24) & 0xff; - state.check = crc32(state.check, hbuf, 4, 0); - //=== - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = OS; - /* falls through */ - case OS: - //=== NEEDBITS(16); */ - while (bits < 16) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if (state.head) { - state.head.xflags = (hold & 0xff); - state.head.os = (hold >> 8); - } - if (state.flags & 0x0200) { - //=== CRC2(state.check, hold); - hbuf[0] = hold & 0xff; - hbuf[1] = (hold >>> 8) & 0xff; - state.check = crc32(state.check, hbuf, 2, 0); - //===// - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = EXLEN; - /* falls through */ - case EXLEN: - if (state.flags & 0x0400) { - //=== NEEDBITS(16); */ - while (bits < 16) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.length = hold; - if (state.head) { - state.head.extra_len = hold; - } - if (state.flags & 0x0200) { - //=== CRC2(state.check, hold); - hbuf[0] = hold & 0xff; - hbuf[1] = (hold >>> 8) & 0xff; - state.check = crc32(state.check, hbuf, 2, 0); - //===// - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - } - else if (state.head) { - state.head.extra = null/*Z_NULL*/; - } - state.mode = EXTRA; - /* falls through */ - case EXTRA: - if (state.flags & 0x0400) { - copy = state.length; - if (copy > have) { copy = have; } - if (copy) { - if (state.head) { - len = state.head.extra_len - state.length; - if (!state.head.extra) { - // Use untyped array for more conveniend processing later - state.head.extra = new Array(state.head.extra_len); - } - utils.arraySet( - state.head.extra, - input, - next, - // extra field is limited to 65536 bytes - // - no need for additional size check - copy, - /*len + copy > state.head.extra_max - len ? state.head.extra_max : copy,*/ - len - ); - //zmemcpy(state.head.extra + len, next, - // len + copy > state.head.extra_max ? - // state.head.extra_max - len : copy); - } - if (state.flags & 0x0200) { - state.check = crc32(state.check, input, copy, next); - } - have -= copy; - next += copy; - state.length -= copy; - } - if (state.length) { break inf_leave; } - } - state.length = 0; - state.mode = NAME; - /* falls through */ - case NAME: - if (state.flags & 0x0800) { - if (have === 0) { break inf_leave; } - copy = 0; - do { - // TODO: 2 or 1 bytes? - len = input[next + copy++]; - /* use constant limit because in js we should not preallocate memory */ - if (state.head && len && - (state.length < 65536 /*state.head.name_max*/)) { - state.head.name += String.fromCharCode(len); - } - } while (len && copy < have); - - if (state.flags & 0x0200) { - state.check = crc32(state.check, input, copy, next); - } - have -= copy; - next += copy; - if (len) { break inf_leave; } - } - else if (state.head) { - state.head.name = null; - } - state.length = 0; - state.mode = COMMENT; - /* falls through */ - case COMMENT: - if (state.flags & 0x1000) { - if (have === 0) { break inf_leave; } - copy = 0; - do { - len = input[next + copy++]; - /* use constant limit because in js we should not preallocate memory */ - if (state.head && len && - (state.length < 65536 /*state.head.comm_max*/)) { - state.head.comment += String.fromCharCode(len); - } - } while (len && copy < have); - if (state.flags & 0x0200) { - state.check = crc32(state.check, input, copy, next); - } - have -= copy; - next += copy; - if (len) { break inf_leave; } - } - else if (state.head) { - state.head.comment = null; - } - state.mode = HCRC; - /* falls through */ - case HCRC: - if (state.flags & 0x0200) { - //=== NEEDBITS(16); */ - while (bits < 16) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if (hold !== (state.check & 0xffff)) { - strm.msg = 'header crc mismatch'; - state.mode = BAD; - break; - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - } - if (state.head) { - state.head.hcrc = ((state.flags >> 9) & 1); - state.head.done = true; - } - strm.adler = state.check = 0 /*crc32(0L, Z_NULL, 0)*/; - state.mode = TYPE; - break; - case DICTID: - //=== NEEDBITS(32); */ - while (bits < 32) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - strm.adler = state.check = ZSWAP32(hold); - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = DICT; - /* falls through */ - case DICT: - if (state.havedict === 0) { - //--- RESTORE() --- - strm.next_out = put; - strm.avail_out = left; - strm.next_in = next; - strm.avail_in = have; - state.hold = hold; - state.bits = bits; - //--- - return Z_NEED_DICT; - } - strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/; - state.mode = TYPE; - /* falls through */ - case TYPE: - if (flush === Z_BLOCK || flush === Z_TREES) { break inf_leave; } - /* falls through */ - case TYPEDO: - if (state.last) { - //--- BYTEBITS() ---// - hold >>>= bits & 7; - bits -= bits & 7; - //---// - state.mode = CHECK; - break; - } - //=== NEEDBITS(3); */ - while (bits < 3) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.last = (hold & 0x01)/*BITS(1)*/; - //--- DROPBITS(1) ---// - hold >>>= 1; - bits -= 1; - //---// - - switch ((hold & 0x03)/*BITS(2)*/) { - case 0: /* stored block */ - //Tracev((stderr, "inflate: stored block%s\n", - // state.last ? " (last)" : "")); - state.mode = STORED; - break; - case 1: /* fixed block */ - fixedtables(state); - //Tracev((stderr, "inflate: fixed codes block%s\n", - // state.last ? " (last)" : "")); - state.mode = LEN_; /* decode codes */ - if (flush === Z_TREES) { - //--- DROPBITS(2) ---// - hold >>>= 2; - bits -= 2; - //---// - break inf_leave; - } - break; - case 2: /* dynamic block */ - //Tracev((stderr, "inflate: dynamic codes block%s\n", - // state.last ? " (last)" : "")); - state.mode = TABLE; - break; - case 3: - strm.msg = 'invalid block type'; - state.mode = BAD; - } - //--- DROPBITS(2) ---// - hold >>>= 2; - bits -= 2; - //---// - break; - case STORED: - //--- BYTEBITS() ---// /* go to byte boundary */ - hold >>>= bits & 7; - bits -= bits & 7; - //---// - //=== NEEDBITS(32); */ - while (bits < 32) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if ((hold & 0xffff) !== ((hold >>> 16) ^ 0xffff)) { - strm.msg = 'invalid stored block lengths'; - state.mode = BAD; - break; - } - state.length = hold & 0xffff; - //Tracev((stderr, "inflate: stored length %u\n", - // state.length)); - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = COPY_; - if (flush === Z_TREES) { break inf_leave; } - /* falls through */ - case COPY_: - state.mode = COPY; - /* falls through */ - case COPY: - copy = state.length; - if (copy) { - if (copy > have) { copy = have; } - if (copy > left) { copy = left; } - if (copy === 0) { break inf_leave; } - //--- zmemcpy(put, next, copy); --- - utils.arraySet(output, input, next, copy, put); - //---// - have -= copy; - next += copy; - left -= copy; - put += copy; - state.length -= copy; - break; - } - //Tracev((stderr, "inflate: stored end\n")); - state.mode = TYPE; - break; - case TABLE: - //=== NEEDBITS(14); */ - while (bits < 14) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.nlen = (hold & 0x1f)/*BITS(5)*/ + 257; - //--- DROPBITS(5) ---// - hold >>>= 5; - bits -= 5; - //---// - state.ndist = (hold & 0x1f)/*BITS(5)*/ + 1; - //--- DROPBITS(5) ---// - hold >>>= 5; - bits -= 5; - //---// - state.ncode = (hold & 0x0f)/*BITS(4)*/ + 4; - //--- DROPBITS(4) ---// - hold >>>= 4; - bits -= 4; - //---// -//#ifndef PKZIP_BUG_WORKAROUND - if (state.nlen > 286 || state.ndist > 30) { - strm.msg = 'too many length or distance symbols'; - state.mode = BAD; - break; - } -//#endif - //Tracev((stderr, "inflate: table sizes ok\n")); - state.have = 0; - state.mode = LENLENS; - /* falls through */ - case LENLENS: - while (state.have < state.ncode) { - //=== NEEDBITS(3); - while (bits < 3) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.lens[order[state.have++]] = (hold & 0x07);//BITS(3); - //--- DROPBITS(3) ---// - hold >>>= 3; - bits -= 3; - //---// - } - while (state.have < 19) { - state.lens[order[state.have++]] = 0; - } - // We have separate tables & no pointers. 2 commented lines below not needed. - //state.next = state.codes; - //state.lencode = state.next; - // Switch to use dynamic table - state.lencode = state.lendyn; - state.lenbits = 7; - - opts = {bits: state.lenbits}; - ret = inflate_table(CODES, state.lens, 0, 19, state.lencode, 0, state.work, opts); - state.lenbits = opts.bits; - - if (ret) { - strm.msg = 'invalid code lengths set'; - state.mode = BAD; - break; - } - //Tracev((stderr, "inflate: code lengths ok\n")); - state.have = 0; - state.mode = CODELENS; - /* falls through */ - case CODELENS: - while (state.have < state.nlen + state.ndist) { - for (;;) { - here = state.lencode[hold & ((1 << state.lenbits) - 1)];/*BITS(state.lenbits)*/ - here_bits = here >>> 24; - here_op = (here >>> 16) & 0xff; - here_val = here & 0xffff; - - if ((here_bits) <= bits) { break; } - //--- PULLBYTE() ---// - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - //---// - } - if (here_val < 16) { - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - state.lens[state.have++] = here_val; - } - else { - if (here_val === 16) { - //=== NEEDBITS(here.bits + 2); - n = here_bits + 2; - while (bits < n) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - if (state.have === 0) { - strm.msg = 'invalid bit length repeat'; - state.mode = BAD; - break; - } - len = state.lens[state.have - 1]; - copy = 3 + (hold & 0x03);//BITS(2); - //--- DROPBITS(2) ---// - hold >>>= 2; - bits -= 2; - //---// - } - else if (here_val === 17) { - //=== NEEDBITS(here.bits + 3); - n = here_bits + 3; - while (bits < n) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - len = 0; - copy = 3 + (hold & 0x07);//BITS(3); - //--- DROPBITS(3) ---// - hold >>>= 3; - bits -= 3; - //---// - } - else { - //=== NEEDBITS(here.bits + 7); - n = here_bits + 7; - while (bits < n) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - len = 0; - copy = 11 + (hold & 0x7f);//BITS(7); - //--- DROPBITS(7) ---// - hold >>>= 7; - bits -= 7; - //---// - } - if (state.have + copy > state.nlen + state.ndist) { - strm.msg = 'invalid bit length repeat'; - state.mode = BAD; - break; - } - while (copy--) { - state.lens[state.have++] = len; - } - } - } - - /* handle error breaks in while */ - if (state.mode === BAD) { break; } - - /* check for end-of-block code (better have one) */ - if (state.lens[256] === 0) { - strm.msg = 'invalid code -- missing end-of-block'; - state.mode = BAD; - break; - } - - /* build code tables -- note: do not change the lenbits or distbits - values here (9 and 6) without reading the comments in inftrees.h - concerning the ENOUGH constants, which depend on those values */ - state.lenbits = 9; - - opts = {bits: state.lenbits}; - ret = inflate_table(LENS, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts); - // We have separate tables & no pointers. 2 commented lines below not needed. - // state.next_index = opts.table_index; - state.lenbits = opts.bits; - // state.lencode = state.next; - - if (ret) { - strm.msg = 'invalid literal/lengths set'; - state.mode = BAD; - break; - } - - state.distbits = 6; - //state.distcode.copy(state.codes); - // Switch to use dynamic table - state.distcode = state.distdyn; - opts = {bits: state.distbits}; - ret = inflate_table(DISTS, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts); - // We have separate tables & no pointers. 2 commented lines below not needed. - // state.next_index = opts.table_index; - state.distbits = opts.bits; - // state.distcode = state.next; - - if (ret) { - strm.msg = 'invalid distances set'; - state.mode = BAD; - break; - } - //Tracev((stderr, 'inflate: codes ok\n')); - state.mode = LEN_; - if (flush === Z_TREES) { break inf_leave; } - /* falls through */ - case LEN_: - state.mode = LEN; - /* falls through */ - case LEN: - if (have >= 6 && left >= 258) { - //--- RESTORE() --- - strm.next_out = put; - strm.avail_out = left; - strm.next_in = next; - strm.avail_in = have; - state.hold = hold; - state.bits = bits; - //--- - inflate_fast(strm, _out); - //--- LOAD() --- - put = strm.next_out; - output = strm.output; - left = strm.avail_out; - next = strm.next_in; - input = strm.input; - have = strm.avail_in; - hold = state.hold; - bits = state.bits; - //--- - - if (state.mode === TYPE) { - state.back = -1; - } - break; - } - state.back = 0; - for (;;) { - here = state.lencode[hold & ((1 << state.lenbits) -1)]; /*BITS(state.lenbits)*/ - here_bits = here >>> 24; - here_op = (here >>> 16) & 0xff; - here_val = here & 0xffff; - - if (here_bits <= bits) { break; } - //--- PULLBYTE() ---// - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - //---// - } - if (here_op && (here_op & 0xf0) === 0) { - last_bits = here_bits; - last_op = here_op; - last_val = here_val; - for (;;) { - here = state.lencode[last_val + - ((hold & ((1 << (last_bits + last_op)) -1))/*BITS(last.bits + last.op)*/ >> last_bits)]; - here_bits = here >>> 24; - here_op = (here >>> 16) & 0xff; - here_val = here & 0xffff; - - if ((last_bits + here_bits) <= bits) { break; } - //--- PULLBYTE() ---// - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - //---// - } - //--- DROPBITS(last.bits) ---// - hold >>>= last_bits; - bits -= last_bits; - //---// - state.back += last_bits; - } - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - state.back += here_bits; - state.length = here_val; - if (here_op === 0) { - //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ? - // "inflate: literal '%c'\n" : - // "inflate: literal 0x%02x\n", here.val)); - state.mode = LIT; - break; - } - if (here_op & 32) { - //Tracevv((stderr, "inflate: end of block\n")); - state.back = -1; - state.mode = TYPE; - break; - } - if (here_op & 64) { - strm.msg = 'invalid literal/length code'; - state.mode = BAD; - break; - } - state.extra = here_op & 15; - state.mode = LENEXT; - /* falls through */ - case LENEXT: - if (state.extra) { - //=== NEEDBITS(state.extra); - n = state.extra; - while (bits < n) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.length += hold & ((1 << state.extra) -1)/*BITS(state.extra)*/; - //--- DROPBITS(state.extra) ---// - hold >>>= state.extra; - bits -= state.extra; - //---// - state.back += state.extra; - } - //Tracevv((stderr, "inflate: length %u\n", state.length)); - state.was = state.length; - state.mode = DIST; - /* falls through */ - case DIST: - for (;;) { - here = state.distcode[hold & ((1 << state.distbits) -1)];/*BITS(state.distbits)*/ - here_bits = here >>> 24; - here_op = (here >>> 16) & 0xff; - here_val = here & 0xffff; - - if ((here_bits) <= bits) { break; } - //--- PULLBYTE() ---// - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - //---// - } - if ((here_op & 0xf0) === 0) { - last_bits = here_bits; - last_op = here_op; - last_val = here_val; - for (;;) { - here = state.distcode[last_val + - ((hold & ((1 << (last_bits + last_op)) -1))/*BITS(last.bits + last.op)*/ >> last_bits)]; - here_bits = here >>> 24; - here_op = (here >>> 16) & 0xff; - here_val = here & 0xffff; - - if ((last_bits + here_bits) <= bits) { break; } - //--- PULLBYTE() ---// - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - //---// - } - //--- DROPBITS(last.bits) ---// - hold >>>= last_bits; - bits -= last_bits; - //---// - state.back += last_bits; - } - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - state.back += here_bits; - if (here_op & 64) { - strm.msg = 'invalid distance code'; - state.mode = BAD; - break; - } - state.offset = here_val; - state.extra = (here_op) & 15; - state.mode = DISTEXT; - /* falls through */ - case DISTEXT: - if (state.extra) { - //=== NEEDBITS(state.extra); - n = state.extra; - while (bits < n) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.offset += hold & ((1 << state.extra) -1)/*BITS(state.extra)*/; - //--- DROPBITS(state.extra) ---// - hold >>>= state.extra; - bits -= state.extra; - //---// - state.back += state.extra; - } -//#ifdef INFLATE_STRICT - if (state.offset > state.dmax) { - strm.msg = 'invalid distance too far back'; - state.mode = BAD; - break; - } -//#endif - //Tracevv((stderr, "inflate: distance %u\n", state.offset)); - state.mode = MATCH; - /* falls through */ - case MATCH: - if (left === 0) { break inf_leave; } - copy = _out - left; - if (state.offset > copy) { /* copy from window */ - copy = state.offset - copy; - if (copy > state.whave) { - if (state.sane) { - strm.msg = 'invalid distance too far back'; - state.mode = BAD; - break; - } -// (!) This block is disabled in zlib defailts, -// don't enable it for binary compatibility -//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR -// Trace((stderr, "inflate.c too far\n")); -// copy -= state.whave; -// if (copy > state.length) { copy = state.length; } -// if (copy > left) { copy = left; } -// left -= copy; -// state.length -= copy; -// do { -// output[put++] = 0; -// } while (--copy); -// if (state.length === 0) { state.mode = LEN; } -// break; -//#endif - } - if (copy > state.wnext) { - copy -= state.wnext; - from = state.wsize - copy; - } - else { - from = state.wnext - copy; - } - if (copy > state.length) { copy = state.length; } - from_source = state.window; - } - else { /* copy from output */ - from_source = output; - from = put - state.offset; - copy = state.length; - } - if (copy > left) { copy = left; } - left -= copy; - state.length -= copy; - do { - output[put++] = from_source[from++]; - } while (--copy); - if (state.length === 0) { state.mode = LEN; } - break; - case LIT: - if (left === 0) { break inf_leave; } - output[put++] = state.length; - left--; - state.mode = LEN; - break; - case CHECK: - if (state.wrap) { - //=== NEEDBITS(32); - while (bits < 32) { - if (have === 0) { break inf_leave; } - have--; - // Use '|' insdead of '+' to make sure that result is signed - hold |= input[next++] << bits; - bits += 8; - } - //===// - _out -= left; - strm.total_out += _out; - state.total += _out; - if (_out) { - strm.adler = state.check = - /*UPDATE(state.check, put - _out, _out);*/ - (state.flags ? crc32(state.check, output, _out, put - _out) : adler32(state.check, output, _out, put - _out)); - - } - _out = left; - // NB: crc32 stored as signed 32-bit int, ZSWAP32 returns signed too - if ((state.flags ? hold : ZSWAP32(hold)) !== state.check) { - strm.msg = 'incorrect data check'; - state.mode = BAD; - break; - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - //Tracev((stderr, "inflate: check matches trailer\n")); - } - state.mode = LENGTH; - /* falls through */ - case LENGTH: - if (state.wrap && state.flags) { - //=== NEEDBITS(32); - while (bits < 32) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if (hold !== (state.total & 0xffffffff)) { - strm.msg = 'incorrect length check'; - state.mode = BAD; - break; - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - //Tracev((stderr, "inflate: length matches trailer\n")); - } - state.mode = DONE; - /* falls through */ - case DONE: - ret = Z_STREAM_END; - break inf_leave; - case BAD: - ret = Z_DATA_ERROR; - break inf_leave; - case MEM: - return Z_MEM_ERROR; - case SYNC: - /* falls through */ - default: - return Z_STREAM_ERROR; - } - } - - // inf_leave <- here is real place for "goto inf_leave", emulated via "break inf_leave" - - /* - Return from inflate(), updating the total counts and the check value. - If there was no progress during the inflate() call, return a buffer - error. Call updatewindow() to create and/or update the window state. - Note: a memory error from inflate() is non-recoverable. - */ - - //--- RESTORE() --- - strm.next_out = put; - strm.avail_out = left; - strm.next_in = next; - strm.avail_in = have; - state.hold = hold; - state.bits = bits; - //--- - - if (state.wsize || (_out !== strm.avail_out && state.mode < BAD && - (state.mode < CHECK || flush !== Z_FINISH))) { - if (updatewindow(strm, strm.output, strm.next_out, _out - strm.avail_out)) { - state.mode = MEM; - return Z_MEM_ERROR; - } - } - _in -= strm.avail_in; - _out -= strm.avail_out; - strm.total_in += _in; - strm.total_out += _out; - state.total += _out; - if (state.wrap && _out) { - strm.adler = state.check = /*UPDATE(state.check, strm.next_out - _out, _out);*/ - (state.flags ? crc32(state.check, output, _out, strm.next_out - _out) : adler32(state.check, output, _out, strm.next_out - _out)); - } - strm.data_type = state.bits + (state.last ? 64 : 0) + - (state.mode === TYPE ? 128 : 0) + - (state.mode === LEN_ || state.mode === COPY_ ? 256 : 0); - if (((_in === 0 && _out === 0) || flush === Z_FINISH) && ret === Z_OK) { - ret = Z_BUF_ERROR; - } - return ret; -} - -function inflateEnd(strm) { - - if (!strm || !strm.state /*|| strm->zfree == (free_func)0*/) { - return Z_STREAM_ERROR; - } - - var state = strm.state; - if (state.window) { - state.window = null; - } - strm.state = null; - return Z_OK; -} - -function inflateGetHeader(strm, head) { - var state; - - /* check state */ - if (!strm || !strm.state) { return Z_STREAM_ERROR; } - state = strm.state; - if ((state.wrap & 2) === 0) { return Z_STREAM_ERROR; } - - /* save header structure */ - state.head = head; - head.done = false; - return Z_OK; -} - - -exports.inflateReset = inflateReset; -exports.inflateReset2 = inflateReset2; -exports.inflateResetKeep = inflateResetKeep; -exports.inflateInit = inflateInit; -exports.inflateInit2 = inflateInit2; -exports.inflate = inflate; -exports.inflateEnd = inflateEnd; -exports.inflateGetHeader = inflateGetHeader; -exports.inflateInfo = 'pako inflate (from Nodeca project)'; - -/* Not implemented -exports.inflateCopy = inflateCopy; -exports.inflateGetDictionary = inflateGetDictionary; -exports.inflateMark = inflateMark; -exports.inflatePrime = inflatePrime; -exports.inflateSetDictionary = inflateSetDictionary; -exports.inflateSync = inflateSync; -exports.inflateSyncPoint = inflateSyncPoint; -exports.inflateUndermine = inflateUndermine; -*/ -},{"../utils/common":4,"./adler32":6,"./crc32":8,"./inffast":11,"./inftrees":13}],13:[function(_dereq_,module,exports){ -'use strict'; - - -var utils = _dereq_('../utils/common'); - -var MAXBITS = 15; -var ENOUGH_LENS = 852; -var ENOUGH_DISTS = 592; -//var ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS); - -var CODES = 0; -var LENS = 1; -var DISTS = 2; - -var lbase = [ /* Length codes 257..285 base */ - 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, - 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0 -]; - -var lext = [ /* Length codes 257..285 extra */ - 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18, - 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78 -]; - -var dbase = [ /* Distance codes 0..29 base */ - 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, - 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, - 8193, 12289, 16385, 24577, 0, 0 -]; - -var dext = [ /* Distance codes 0..29 extra */ - 16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, - 23, 23, 24, 24, 25, 25, 26, 26, 27, 27, - 28, 28, 29, 29, 64, 64 -]; - -module.exports = function inflate_table(type, lens, lens_index, codes, table, table_index, work, opts) -{ - var bits = opts.bits; - //here = opts.here; /* table entry for duplication */ - - var len = 0; /* a code's length in bits */ - var sym = 0; /* index of code symbols */ - var min = 0, max = 0; /* minimum and maximum code lengths */ - var root = 0; /* number of index bits for root table */ - var curr = 0; /* number of index bits for current table */ - var drop = 0; /* code bits to drop for sub-table */ - var left = 0; /* number of prefix codes available */ - var used = 0; /* code entries in table used */ - var huff = 0; /* Huffman code */ - var incr; /* for incrementing code, index */ - var fill; /* index for replicating entries */ - var low; /* low bits for current root entry */ - var mask; /* mask for low root bits */ - var next; /* next available space in table */ - var base = null; /* base value table to use */ - var base_index = 0; -// var shoextra; /* extra bits table to use */ - var end; /* use base and extra for symbol > end */ - var count = new utils.Buf16(MAXBITS+1); //[MAXBITS+1]; /* number of codes of each length */ - var offs = new utils.Buf16(MAXBITS+1); //[MAXBITS+1]; /* offsets in table for each length */ - var extra = null; - var extra_index = 0; - - var here_bits, here_op, here_val; - - /* - Process a set of code lengths to create a canonical Huffman code. The - code lengths are lens[0..codes-1]. Each length corresponds to the - symbols 0..codes-1. The Huffman code is generated by first sorting the - symbols by length from short to long, and retaining the symbol order - for codes with equal lengths. Then the code starts with all zero bits - for the first code of the shortest length, and the codes are integer - increments for the same length, and zeros are appended as the length - increases. For the deflate format, these bits are stored backwards - from their more natural integer increment ordering, and so when the - decoding tables are built in the large loop below, the integer codes - are incremented backwards. - - This routine assumes, but does not check, that all of the entries in - lens[] are in the range 0..MAXBITS. The caller must assure this. - 1..MAXBITS is interpreted as that code length. zero means that that - symbol does not occur in this code. - - The codes are sorted by computing a count of codes for each length, - creating from that a table of starting indices for each length in the - sorted table, and then entering the symbols in order in the sorted - table. The sorted table is work[], with that space being provided by - the caller. - - The length counts are used for other purposes as well, i.e. finding - the minimum and maximum length codes, determining if there are any - codes at all, checking for a valid set of lengths, and looking ahead - at length counts to determine sub-table sizes when building the - decoding tables. - */ - - /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */ - for (len = 0; len <= MAXBITS; len++) { - count[len] = 0; - } - for (sym = 0; sym < codes; sym++) { - count[lens[lens_index + sym]]++; - } - - /* bound code lengths, force root to be within code lengths */ - root = bits; - for (max = MAXBITS; max >= 1; max--) { - if (count[max] !== 0) { break; } - } - if (root > max) { - root = max; - } - if (max === 0) { /* no symbols to code at all */ - //table.op[opts.table_index] = 64; //here.op = (var char)64; /* invalid code marker */ - //table.bits[opts.table_index] = 1; //here.bits = (var char)1; - //table.val[opts.table_index++] = 0; //here.val = (var short)0; - table[table_index++] = (1 << 24) | (64 << 16) | 0; - - - //table.op[opts.table_index] = 64; - //table.bits[opts.table_index] = 1; - //table.val[opts.table_index++] = 0; - table[table_index++] = (1 << 24) | (64 << 16) | 0; - - opts.bits = 1; - return 0; /* no symbols, but wait for decoding to report error */ - } - for (min = 1; min < max; min++) { - if (count[min] !== 0) { break; } - } - if (root < min) { - root = min; - } - - /* check for an over-subscribed or incomplete set of lengths */ - left = 1; - for (len = 1; len <= MAXBITS; len++) { - left <<= 1; - left -= count[len]; - if (left < 0) { - return -1; - } /* over-subscribed */ - } - if (left > 0 && (type === CODES || max !== 1)) { - return -1; /* incomplete set */ - } - - /* generate offsets into symbol table for each length for sorting */ - offs[1] = 0; - for (len = 1; len < MAXBITS; len++) { - offs[len + 1] = offs[len] + count[len]; - } - - /* sort symbols by length, by symbol order within each length */ - for (sym = 0; sym < codes; sym++) { - if (lens[lens_index + sym] !== 0) { - work[offs[lens[lens_index + sym]]++] = sym; - } - } - - /* - Create and fill in decoding tables. In this loop, the table being - filled is at next and has curr index bits. The code being used is huff - with length len. That code is converted to an index by dropping drop - bits off of the bottom. For codes where len is less than drop + curr, - those top drop + curr - len bits are incremented through all values to - fill the table with replicated entries. - - root is the number of index bits for the root table. When len exceeds - root, sub-tables are created pointed to by the root entry with an index - of the low root bits of huff. This is saved in low to check for when a - new sub-table should be started. drop is zero when the root table is - being filled, and drop is root when sub-tables are being filled. - - When a new sub-table is needed, it is necessary to look ahead in the - code lengths to determine what size sub-table is needed. The length - counts are used for this, and so count[] is decremented as codes are - entered in the tables. - - used keeps track of how many table entries have been allocated from the - provided *table space. It is checked for LENS and DIST tables against - the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in - the initial root table size constants. See the comments in inftrees.h - for more information. - - sym increments through all symbols, and the loop terminates when - all codes of length max, i.e. all codes, have been processed. This - routine permits incomplete codes, so another loop after this one fills - in the rest of the decoding tables with invalid code markers. - */ - - /* set up for code type */ - // poor man optimization - use if-else instead of switch, - // to avoid deopts in old v8 - if (type === CODES) { - base = extra = work; /* dummy value--not used */ - end = 19; - } else if (type === LENS) { - base = lbase; - base_index -= 257; - extra = lext; - extra_index -= 257; - end = 256; - } else { /* DISTS */ - base = dbase; - extra = dext; - end = -1; - } - - /* initialize opts for loop */ - huff = 0; /* starting code */ - sym = 0; /* starting code symbol */ - len = min; /* starting code length */ - next = table_index; /* current table to fill in */ - curr = root; /* current table index bits */ - drop = 0; /* current bits to drop from code for index */ - low = -1; /* trigger new sub-table when len > root */ - used = 1 << root; /* use root table entries */ - mask = used - 1; /* mask for comparing low */ - - /* check available table space */ - if ((type === LENS && used > ENOUGH_LENS) || - (type === DISTS && used > ENOUGH_DISTS)) { - return 1; - } - - var i=0; - /* process all codes and make table entries */ - for (;;) { - i++; - /* create table entry */ - here_bits = len - drop; - if (work[sym] < end) { - here_op = 0; - here_val = work[sym]; - } - else if (work[sym] > end) { - here_op = extra[extra_index + work[sym]]; - here_val = base[base_index + work[sym]]; - } - else { - here_op = 32 + 64; /* end of block */ - here_val = 0; - } - - /* replicate for those indices with low len bits equal to huff */ - incr = 1 << (len - drop); - fill = 1 << curr; - min = fill; /* save offset to next table */ - do { - fill -= incr; - table[next + (huff >> drop) + fill] = (here_bits << 24) | (here_op << 16) | here_val |0; - } while (fill !== 0); - - /* backwards increment the len-bit code huff */ - incr = 1 << (len - 1); - while (huff & incr) { - incr >>= 1; - } - if (incr !== 0) { - huff &= incr - 1; - huff += incr; - } else { - huff = 0; - } - - /* go to next symbol, update count, len */ - sym++; - if (--count[len] === 0) { - if (len === max) { break; } - len = lens[lens_index + work[sym]]; - } - - /* create new sub-table if needed */ - if (len > root && (huff & mask) !== low) { - /* if first time, transition to sub-tables */ - if (drop === 0) { - drop = root; - } - - /* increment past last table */ - next += min; /* here min is 1 << curr */ - - /* determine length of next table */ - curr = len - drop; - left = 1 << curr; - while (curr + drop < max) { - left -= count[curr + drop]; - if (left <= 0) { break; } - curr++; - left <<= 1; - } - - /* check for enough space */ - used += 1 << curr; - if ((type === LENS && used > ENOUGH_LENS) || - (type === DISTS && used > ENOUGH_DISTS)) { - return 1; - } - - /* point entry in root table to sub-table */ - low = huff & mask; - /*table.op[low] = curr; - table.bits[low] = root; - table.val[low] = next - opts.table_index;*/ - table[low] = (root << 24) | (curr << 16) | (next - table_index) |0; - } - } - - /* fill in remaining table entry if code is incomplete (guaranteed to have - at most one remaining entry, since if the code is incomplete, the - maximum code length that was allowed to get this far is one bit) */ - if (huff !== 0) { - //table.op[next + huff] = 64; /* invalid code marker */ - //table.bits[next + huff] = len - drop; - //table.val[next + huff] = 0; - table[next + huff] = ((len - drop) << 24) | (64 << 16) |0; - } - - /* set return parameters */ - //opts.table_index += used; - opts.bits = root; - return 0; -}; - -},{"../utils/common":4}],14:[function(_dereq_,module,exports){ -'use strict'; - -module.exports = { - '2': 'need dictionary', /* Z_NEED_DICT 2 */ - '1': 'stream end', /* Z_STREAM_END 1 */ - '0': '', /* Z_OK 0 */ - '-1': 'file error', /* Z_ERRNO (-1) */ - '-2': 'stream error', /* Z_STREAM_ERROR (-2) */ - '-3': 'data error', /* Z_DATA_ERROR (-3) */ - '-4': 'insufficient memory', /* Z_MEM_ERROR (-4) */ - '-5': 'buffer error', /* Z_BUF_ERROR (-5) */ - '-6': 'incompatible version' /* Z_VERSION_ERROR (-6) */ -}; -},{}],15:[function(_dereq_,module,exports){ -'use strict'; - - -var utils = _dereq_('../utils/common'); - -/* Public constants ==========================================================*/ -/* ===========================================================================*/ - - -//var Z_FILTERED = 1; -//var Z_HUFFMAN_ONLY = 2; -//var Z_RLE = 3; -var Z_FIXED = 4; -//var Z_DEFAULT_STRATEGY = 0; - -/* Possible values of the data_type field (though see inflate()) */ -var Z_BINARY = 0; -var Z_TEXT = 1; -//var Z_ASCII = 1; // = Z_TEXT -var Z_UNKNOWN = 2; - -/*============================================================================*/ - - -function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } } - -// From zutil.h - -var STORED_BLOCK = 0; -var STATIC_TREES = 1; -var DYN_TREES = 2; -/* The three kinds of block type */ - -var MIN_MATCH = 3; -var MAX_MATCH = 258; -/* The minimum and maximum match lengths */ - -// From deflate.h -/* =========================================================================== - * Internal compression state. - */ - -var LENGTH_CODES = 29; -/* number of length codes, not counting the special END_BLOCK code */ - -var LITERALS = 256; -/* number of literal bytes 0..255 */ - -var L_CODES = LITERALS + 1 + LENGTH_CODES; -/* number of Literal or Length codes, including the END_BLOCK code */ - -var D_CODES = 30; -/* number of distance codes */ - -var BL_CODES = 19; -/* number of codes used to transfer the bit lengths */ - -var HEAP_SIZE = 2*L_CODES + 1; -/* maximum heap size */ - -var MAX_BITS = 15; -/* All codes must not exceed MAX_BITS bits */ - -var Buf_size = 16; -/* size of bit buffer in bi_buf */ - - -/* =========================================================================== - * Constants - */ - -var MAX_BL_BITS = 7; -/* Bit length codes must not exceed MAX_BL_BITS bits */ - -var END_BLOCK = 256; -/* end of block literal code */ - -var REP_3_6 = 16; -/* repeat previous bit length 3-6 times (2 bits of repeat count) */ - -var REPZ_3_10 = 17; -/* repeat a zero length 3-10 times (3 bits of repeat count) */ - -var REPZ_11_138 = 18; -/* repeat a zero length 11-138 times (7 bits of repeat count) */ - -var extra_lbits = /* extra bits for each length code */ - [0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0]; - -var extra_dbits = /* extra bits for each distance code */ - [0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13]; - -var extra_blbits = /* extra bits for each bit length code */ - [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7]; - -var bl_order = - [16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]; -/* The lengths of the bit length codes are sent in order of decreasing - * probability, to avoid transmitting the lengths for unused bit length codes. - */ - -/* =========================================================================== - * Local data. These are initialized only once. - */ - -// We pre-fill arrays with 0 to avoid uninitialized gaps - -var DIST_CODE_LEN = 512; /* see definition of array dist_code below */ - -// !!!! Use flat array insdead of structure, Freq = i*2, Len = i*2+1 -var static_ltree = new Array((L_CODES+2) * 2); -zero(static_ltree); -/* The static literal tree. Since the bit lengths are imposed, there is no - * need for the L_CODES extra codes used during heap construction. However - * The codes 286 and 287 are needed to build a canonical tree (see _tr_init - * below). - */ - -var static_dtree = new Array(D_CODES * 2); -zero(static_dtree); -/* The static distance tree. (Actually a trivial tree since all codes use - * 5 bits.) - */ - -var _dist_code = new Array(DIST_CODE_LEN); -zero(_dist_code); -/* Distance codes. The first 256 values correspond to the distances - * 3 .. 258, the last 256 values correspond to the top 8 bits of - * the 15 bit distances. - */ - -var _length_code = new Array(MAX_MATCH-MIN_MATCH+1); -zero(_length_code); -/* length code for each normalized match length (0 == MIN_MATCH) */ - -var base_length = new Array(LENGTH_CODES); -zero(base_length); -/* First normalized length for each code (0 = MIN_MATCH) */ - -var base_dist = new Array(D_CODES); -zero(base_dist); -/* First normalized distance for each code (0 = distance of 1) */ - - -var StaticTreeDesc = function (static_tree, extra_bits, extra_base, elems, max_length) { - - this.static_tree = static_tree; /* static tree or NULL */ - this.extra_bits = extra_bits; /* extra bits for each code or NULL */ - this.extra_base = extra_base; /* base index for extra_bits */ - this.elems = elems; /* max number of elements in the tree */ - this.max_length = max_length; /* max bit length for the codes */ - - // show if `static_tree` has data or dummy - needed for monomorphic objects - this.has_stree = static_tree && static_tree.length; -}; - - -var static_l_desc; -var static_d_desc; -var static_bl_desc; - - -var TreeDesc = function(dyn_tree, stat_desc) { - this.dyn_tree = dyn_tree; /* the dynamic tree */ - this.max_code = 0; /* largest code with non zero frequency */ - this.stat_desc = stat_desc; /* the corresponding static tree */ -}; - - - -function d_code(dist) { - return dist < 256 ? _dist_code[dist] : _dist_code[256 + (dist >>> 7)]; -} - - -/* =========================================================================== - * Output a short LSB first on the stream. - * IN assertion: there is enough room in pendingBuf. - */ -function put_short (s, w) { -// put_byte(s, (uch)((w) & 0xff)); -// put_byte(s, (uch)((ush)(w) >> 8)); - s.pending_buf[s.pending++] = (w) & 0xff; - s.pending_buf[s.pending++] = (w >>> 8) & 0xff; -} - - -/* =========================================================================== - * Send a value on a given number of bits. - * IN assertion: length <= 16 and value fits in length bits. - */ -function send_bits(s, value, length) { - if (s.bi_valid > (Buf_size - length)) { - s.bi_buf |= (value << s.bi_valid) & 0xffff; - put_short(s, s.bi_buf); - s.bi_buf = value >> (Buf_size - s.bi_valid); - s.bi_valid += length - Buf_size; - } else { - s.bi_buf |= (value << s.bi_valid) & 0xffff; - s.bi_valid += length; - } -} - - -function send_code(s, c, tree) { - send_bits(s, tree[c*2]/*.Code*/, tree[c*2 + 1]/*.Len*/); -} - - -/* =========================================================================== - * Reverse the first len bits of a code, using straightforward code (a faster - * method would use a table) - * IN assertion: 1 <= len <= 15 - */ -function bi_reverse(code, len) { - var res = 0; - do { - res |= code & 1; - code >>>= 1; - res <<= 1; - } while (--len > 0); - return res >>> 1; -} - - -/* =========================================================================== - * Flush the bit buffer, keeping at most 7 bits in it. - */ -function bi_flush(s) { - if (s.bi_valid === 16) { - put_short(s, s.bi_buf); - s.bi_buf = 0; - s.bi_valid = 0; - - } else if (s.bi_valid >= 8) { - s.pending_buf[s.pending++] = s.bi_buf & 0xff; - s.bi_buf >>= 8; - s.bi_valid -= 8; - } -} - - -/* =========================================================================== - * Compute the optimal bit lengths for a tree and update the total bit length - * for the current block. - * IN assertion: the fields freq and dad are set, heap[heap_max] and - * above are the tree nodes sorted by increasing frequency. - * OUT assertions: the field len is set to the optimal bit length, the - * array bl_count contains the frequencies for each bit length. - * The length opt_len is updated; static_len is also updated if stree is - * not null. - */ -function gen_bitlen(s, desc) -// deflate_state *s; -// tree_desc *desc; /* the tree descriptor */ -{ - var tree = desc.dyn_tree; - var max_code = desc.max_code; - var stree = desc.stat_desc.static_tree; - var has_stree = desc.stat_desc.has_stree; - var extra = desc.stat_desc.extra_bits; - var base = desc.stat_desc.extra_base; - var max_length = desc.stat_desc.max_length; - var h; /* heap index */ - var n, m; /* iterate over the tree elements */ - var bits; /* bit length */ - var xbits; /* extra bits */ - var f; /* frequency */ - var overflow = 0; /* number of elements with bit length too large */ - - for (bits = 0; bits <= MAX_BITS; bits++) { - s.bl_count[bits] = 0; - } - - /* In a first pass, compute the optimal bit lengths (which may - * overflow in the case of the bit length tree). - */ - tree[s.heap[s.heap_max]*2 + 1]/*.Len*/ = 0; /* root of the heap */ - - for (h = s.heap_max+1; h < HEAP_SIZE; h++) { - n = s.heap[h]; - bits = tree[tree[n*2 +1]/*.Dad*/ * 2 + 1]/*.Len*/ + 1; - if (bits > max_length) { - bits = max_length; - overflow++; - } - tree[n*2 + 1]/*.Len*/ = bits; - /* We overwrite tree[n].Dad which is no longer needed */ - - if (n > max_code) { continue; } /* not a leaf node */ - - s.bl_count[bits]++; - xbits = 0; - if (n >= base) { - xbits = extra[n-base]; - } - f = tree[n * 2]/*.Freq*/; - s.opt_len += f * (bits + xbits); - if (has_stree) { - s.static_len += f * (stree[n*2 + 1]/*.Len*/ + xbits); - } - } - if (overflow === 0) { return; } - - // Trace((stderr,"\nbit length overflow\n")); - /* This happens for example on obj2 and pic of the Calgary corpus */ - - /* Find the first bit length which could increase: */ - do { - bits = max_length-1; - while (s.bl_count[bits] === 0) { bits--; } - s.bl_count[bits]--; /* move one leaf down the tree */ - s.bl_count[bits+1] += 2; /* move one overflow item as its brother */ - s.bl_count[max_length]--; - /* The brother of the overflow item also moves one step up, - * but this does not affect bl_count[max_length] - */ - overflow -= 2; - } while (overflow > 0); - - /* Now recompute all bit lengths, scanning in increasing frequency. - * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all - * lengths instead of fixing only the wrong ones. This idea is taken - * from 'ar' written by Haruhiko Okumura.) - */ - for (bits = max_length; bits !== 0; bits--) { - n = s.bl_count[bits]; - while (n !== 0) { - m = s.heap[--h]; - if (m > max_code) { continue; } - if (tree[m*2 + 1]/*.Len*/ !== bits) { - // Trace((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits)); - s.opt_len += (bits - tree[m*2 + 1]/*.Len*/)*tree[m*2]/*.Freq*/; - tree[m*2 + 1]/*.Len*/ = bits; - } - n--; - } - } -} - - -/* =========================================================================== - * Generate the codes for a given tree and bit counts (which need not be - * optimal). - * IN assertion: the array bl_count contains the bit length statistics for - * the given tree and the field len is set for all tree elements. - * OUT assertion: the field code is set for all tree elements of non - * zero code length. - */ -function gen_codes(tree, max_code, bl_count) -// ct_data *tree; /* the tree to decorate */ -// int max_code; /* largest code with non zero frequency */ -// ushf *bl_count; /* number of codes at each bit length */ -{ - var next_code = new Array(MAX_BITS+1); /* next code value for each bit length */ - var code = 0; /* running code value */ - var bits; /* bit index */ - var n; /* code index */ - - /* The distribution counts are first used to generate the code values - * without bit reversal. - */ - for (bits = 1; bits <= MAX_BITS; bits++) { - next_code[bits] = code = (code + bl_count[bits-1]) << 1; - } - /* Check that the bit counts in bl_count are consistent. The last code - * must be all ones. - */ - //Assert (code + bl_count[MAX_BITS]-1 == (1< length code (0..28) */ - length = 0; - for (code = 0; code < LENGTH_CODES-1; code++) { - base_length[code] = length; - for (n = 0; n < (1< dist code (0..29) */ - dist = 0; - for (code = 0 ; code < 16; code++) { - base_dist[code] = dist; - for (n = 0; n < (1<>= 7; /* from now on, all distances are divided by 128 */ - for ( ; code < D_CODES; code++) { - base_dist[code] = dist << 7; - for (n = 0; n < (1<<(extra_dbits[code]-7)); n++) { - _dist_code[256 + dist++] = code; - } - } - //Assert (dist == 256, "tr_static_init: 256+dist != 512"); - - /* Construct the codes of the static literal tree */ - for (bits = 0; bits <= MAX_BITS; bits++) { - bl_count[bits] = 0; - } - - n = 0; - while (n <= 143) { - static_ltree[n*2 + 1]/*.Len*/ = 8; - n++; - bl_count[8]++; - } - while (n <= 255) { - static_ltree[n*2 + 1]/*.Len*/ = 9; - n++; - bl_count[9]++; - } - while (n <= 279) { - static_ltree[n*2 + 1]/*.Len*/ = 7; - n++; - bl_count[7]++; - } - while (n <= 287) { - static_ltree[n*2 + 1]/*.Len*/ = 8; - n++; - bl_count[8]++; - } - /* Codes 286 and 287 do not exist, but we must include them in the - * tree construction to get a canonical Huffman tree (longest code - * all ones) - */ - gen_codes(static_ltree, L_CODES+1, bl_count); - - /* The static distance tree is trivial: */ - for (n = 0; n < D_CODES; n++) { - static_dtree[n*2 + 1]/*.Len*/ = 5; - static_dtree[n*2]/*.Code*/ = bi_reverse(n, 5); - } - - // Now data ready and we can init static trees - static_l_desc = new StaticTreeDesc(static_ltree, extra_lbits, LITERALS+1, L_CODES, MAX_BITS); - static_d_desc = new StaticTreeDesc(static_dtree, extra_dbits, 0, D_CODES, MAX_BITS); - static_bl_desc =new StaticTreeDesc(new Array(0), extra_blbits, 0, BL_CODES, MAX_BL_BITS); - - //static_init_done = true; -} - - -/* =========================================================================== - * Initialize a new block. - */ -function init_block(s) { - var n; /* iterates over tree elements */ - - /* Initialize the trees. */ - for (n = 0; n < L_CODES; n++) { s.dyn_ltree[n*2]/*.Freq*/ = 0; } - for (n = 0; n < D_CODES; n++) { s.dyn_dtree[n*2]/*.Freq*/ = 0; } - for (n = 0; n < BL_CODES; n++) { s.bl_tree[n*2]/*.Freq*/ = 0; } - - s.dyn_ltree[END_BLOCK*2]/*.Freq*/ = 1; - s.opt_len = s.static_len = 0; - s.last_lit = s.matches = 0; -} - - -/* =========================================================================== - * Flush the bit buffer and align the output on a byte boundary - */ -function bi_windup(s) -{ - if (s.bi_valid > 8) { - put_short(s, s.bi_buf); - } else if (s.bi_valid > 0) { - //put_byte(s, (Byte)s->bi_buf); - s.pending_buf[s.pending++] = s.bi_buf; - } - s.bi_buf = 0; - s.bi_valid = 0; -} - -/* =========================================================================== - * Copy a stored block, storing first the length and its - * one's complement if requested. - */ -function copy_block(s, buf, len, header) -//DeflateState *s; -//charf *buf; /* the input data */ -//unsigned len; /* its length */ -//int header; /* true if block header must be written */ -{ - bi_windup(s); /* align on byte boundary */ - - if (header) { - put_short(s, len); - put_short(s, ~len); - } -// while (len--) { -// put_byte(s, *buf++); -// } - utils.arraySet(s.pending_buf, s.window, buf, len, s.pending); - s.pending += len; -} - -/* =========================================================================== - * Compares to subtrees, using the tree depth as tie breaker when - * the subtrees have equal frequency. This minimizes the worst case length. - */ -function smaller(tree, n, m, depth) { - var _n2 = n*2; - var _m2 = m*2; - return (tree[_n2]/*.Freq*/ < tree[_m2]/*.Freq*/ || - (tree[_n2]/*.Freq*/ === tree[_m2]/*.Freq*/ && depth[n] <= depth[m])); -} - -/* =========================================================================== - * Restore the heap property by moving down the tree starting at node k, - * exchanging a node with the smallest of its two sons if necessary, stopping - * when the heap property is re-established (each father smaller than its - * two sons). - */ -function pqdownheap(s, tree, k) -// deflate_state *s; -// ct_data *tree; /* the tree to restore */ -// int k; /* node to move down */ -{ - var v = s.heap[k]; - var j = k << 1; /* left son of k */ - while (j <= s.heap_len) { - /* Set j to the smallest of the two sons: */ - if (j < s.heap_len && - smaller(tree, s.heap[j+1], s.heap[j], s.depth)) { - j++; - } - /* Exit if v is smaller than both sons */ - if (smaller(tree, v, s.heap[j], s.depth)) { break; } - - /* Exchange v with the smallest son */ - s.heap[k] = s.heap[j]; - k = j; - - /* And continue down the tree, setting j to the left son of k */ - j <<= 1; - } - s.heap[k] = v; -} - - -// inlined manually -// var SMALLEST = 1; - -/* =========================================================================== - * Send the block data compressed using the given Huffman trees - */ -function compress_block(s, ltree, dtree) -// deflate_state *s; -// const ct_data *ltree; /* literal tree */ -// const ct_data *dtree; /* distance tree */ -{ - var dist; /* distance of matched string */ - var lc; /* match length or unmatched char (if dist == 0) */ - var lx = 0; /* running index in l_buf */ - var code; /* the code to send */ - var extra; /* number of extra bits to send */ - - if (s.last_lit !== 0) { - do { - dist = (s.pending_buf[s.d_buf + lx*2] << 8) | (s.pending_buf[s.d_buf + lx*2 + 1]); - lc = s.pending_buf[s.l_buf + lx]; - lx++; - - if (dist === 0) { - send_code(s, lc, ltree); /* send a literal byte */ - //Tracecv(isgraph(lc), (stderr," '%c' ", lc)); - } else { - /* Here, lc is the match length - MIN_MATCH */ - code = _length_code[lc]; - send_code(s, code+LITERALS+1, ltree); /* send the length code */ - extra = extra_lbits[code]; - if (extra !== 0) { - lc -= base_length[code]; - send_bits(s, lc, extra); /* send the extra length bits */ - } - dist--; /* dist is now the match distance - 1 */ - code = d_code(dist); - //Assert (code < D_CODES, "bad d_code"); - - send_code(s, code, dtree); /* send the distance code */ - extra = extra_dbits[code]; - if (extra !== 0) { - dist -= base_dist[code]; - send_bits(s, dist, extra); /* send the extra distance bits */ - } - } /* literal or match pair ? */ - - /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */ - //Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx, - // "pendingBuf overflow"); - - } while (lx < s.last_lit); - } - - send_code(s, END_BLOCK, ltree); -} - - -/* =========================================================================== - * Construct one Huffman tree and assigns the code bit strings and lengths. - * Update the total bit length for the current block. - * IN assertion: the field freq is set for all tree elements. - * OUT assertions: the fields len and code are set to the optimal bit length - * and corresponding code. The length opt_len is updated; static_len is - * also updated if stree is not null. The field max_code is set. - */ -function build_tree(s, desc) -// deflate_state *s; -// tree_desc *desc; /* the tree descriptor */ -{ - var tree = desc.dyn_tree; - var stree = desc.stat_desc.static_tree; - var has_stree = desc.stat_desc.has_stree; - var elems = desc.stat_desc.elems; - var n, m; /* iterate over heap elements */ - var max_code = -1; /* largest code with non zero frequency */ - var node; /* new node being created */ - - /* Construct the initial heap, with least frequent element in - * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1]. - * heap[0] is not used. - */ - s.heap_len = 0; - s.heap_max = HEAP_SIZE; - - for (n = 0; n < elems; n++) { - if (tree[n * 2]/*.Freq*/ !== 0) { - s.heap[++s.heap_len] = max_code = n; - s.depth[n] = 0; - - } else { - tree[n*2 + 1]/*.Len*/ = 0; - } - } - - /* The pkzip format requires that at least one distance code exists, - * and that at least one bit should be sent even if there is only one - * possible code. So to avoid special checks later on we force at least - * two codes of non zero frequency. - */ - while (s.heap_len < 2) { - node = s.heap[++s.heap_len] = (max_code < 2 ? ++max_code : 0); - tree[node * 2]/*.Freq*/ = 1; - s.depth[node] = 0; - s.opt_len--; - - if (has_stree) { - s.static_len -= stree[node*2 + 1]/*.Len*/; - } - /* node is 0 or 1 so it does not have extra bits */ - } - desc.max_code = max_code; - - /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree, - * establish sub-heaps of increasing lengths: - */ - for (n = (s.heap_len >> 1/*int /2*/); n >= 1; n--) { pqdownheap(s, tree, n); } - - /* Construct the Huffman tree by repeatedly combining the least two - * frequent nodes. - */ - node = elems; /* next internal node of the tree */ - do { - //pqremove(s, tree, n); /* n = node of least frequency */ - /*** pqremove ***/ - n = s.heap[1/*SMALLEST*/]; - s.heap[1/*SMALLEST*/] = s.heap[s.heap_len--]; - pqdownheap(s, tree, 1/*SMALLEST*/); - /***/ - - m = s.heap[1/*SMALLEST*/]; /* m = node of next least frequency */ - - s.heap[--s.heap_max] = n; /* keep the nodes sorted by frequency */ - s.heap[--s.heap_max] = m; - - /* Create a new node father of n and m */ - tree[node * 2]/*.Freq*/ = tree[n * 2]/*.Freq*/ + tree[m * 2]/*.Freq*/; - s.depth[node] = (s.depth[n] >= s.depth[m] ? s.depth[n] : s.depth[m]) + 1; - tree[n*2 + 1]/*.Dad*/ = tree[m*2 + 1]/*.Dad*/ = node; - - /* and insert the new node in the heap */ - s.heap[1/*SMALLEST*/] = node++; - pqdownheap(s, tree, 1/*SMALLEST*/); - - } while (s.heap_len >= 2); - - s.heap[--s.heap_max] = s.heap[1/*SMALLEST*/]; - - /* At this point, the fields freq and dad are set. We can now - * generate the bit lengths. - */ - gen_bitlen(s, desc); - - /* The field len is now set, we can generate the bit codes */ - gen_codes(tree, max_code, s.bl_count); -} - - -/* =========================================================================== - * Scan a literal or distance tree to determine the frequencies of the codes - * in the bit length tree. - */ -function scan_tree(s, tree, max_code) -// deflate_state *s; -// ct_data *tree; /* the tree to be scanned */ -// int max_code; /* and its largest code of non zero frequency */ -{ - var n; /* iterates over all tree elements */ - var prevlen = -1; /* last emitted length */ - var curlen; /* length of current code */ - - var nextlen = tree[0*2 + 1]/*.Len*/; /* length of next code */ - - var count = 0; /* repeat count of the current code */ - var max_count = 7; /* max repeat count */ - var min_count = 4; /* min repeat count */ - - if (nextlen === 0) { - max_count = 138; - min_count = 3; - } - tree[(max_code+1)*2 + 1]/*.Len*/ = 0xffff; /* guard */ - - for (n = 0; n <= max_code; n++) { - curlen = nextlen; - nextlen = tree[(n+1)*2 + 1]/*.Len*/; - - if (++count < max_count && curlen === nextlen) { - continue; - - } else if (count < min_count) { - s.bl_tree[curlen * 2]/*.Freq*/ += count; - - } else if (curlen !== 0) { - - if (curlen !== prevlen) { s.bl_tree[curlen * 2]/*.Freq*/++; } - s.bl_tree[REP_3_6*2]/*.Freq*/++; - - } else if (count <= 10) { - s.bl_tree[REPZ_3_10*2]/*.Freq*/++; - - } else { - s.bl_tree[REPZ_11_138*2]/*.Freq*/++; - } - - count = 0; - prevlen = curlen; - - if (nextlen === 0) { - max_count = 138; - min_count = 3; - - } else if (curlen === nextlen) { - max_count = 6; - min_count = 3; - - } else { - max_count = 7; - min_count = 4; - } - } -} - - -/* =========================================================================== - * Send a literal or distance tree in compressed form, using the codes in - * bl_tree. - */ -function send_tree(s, tree, max_code) -// deflate_state *s; -// ct_data *tree; /* the tree to be scanned */ -// int max_code; /* and its largest code of non zero frequency */ -{ - var n; /* iterates over all tree elements */ - var prevlen = -1; /* last emitted length */ - var curlen; /* length of current code */ - - var nextlen = tree[0*2 + 1]/*.Len*/; /* length of next code */ - - var count = 0; /* repeat count of the current code */ - var max_count = 7; /* max repeat count */ - var min_count = 4; /* min repeat count */ - - /* tree[max_code+1].Len = -1; */ /* guard already set */ - if (nextlen === 0) { - max_count = 138; - min_count = 3; - } - - for (n = 0; n <= max_code; n++) { - curlen = nextlen; - nextlen = tree[(n+1)*2 + 1]/*.Len*/; - - if (++count < max_count && curlen === nextlen) { - continue; - - } else if (count < min_count) { - do { send_code(s, curlen, s.bl_tree); } while (--count !== 0); - - } else if (curlen !== 0) { - if (curlen !== prevlen) { - send_code(s, curlen, s.bl_tree); - count--; - } - //Assert(count >= 3 && count <= 6, " 3_6?"); - send_code(s, REP_3_6, s.bl_tree); - send_bits(s, count-3, 2); - - } else if (count <= 10) { - send_code(s, REPZ_3_10, s.bl_tree); - send_bits(s, count-3, 3); - - } else { - send_code(s, REPZ_11_138, s.bl_tree); - send_bits(s, count-11, 7); - } - - count = 0; - prevlen = curlen; - if (nextlen === 0) { - max_count = 138; - min_count = 3; - - } else if (curlen === nextlen) { - max_count = 6; - min_count = 3; - - } else { - max_count = 7; - min_count = 4; - } - } -} - - -/* =========================================================================== - * Construct the Huffman tree for the bit lengths and return the index in - * bl_order of the last bit length code to send. - */ -function build_bl_tree(s) { - var max_blindex; /* index of last bit length code of non zero freq */ - - /* Determine the bit length frequencies for literal and distance trees */ - scan_tree(s, s.dyn_ltree, s.l_desc.max_code); - scan_tree(s, s.dyn_dtree, s.d_desc.max_code); - - /* Build the bit length tree: */ - build_tree(s, s.bl_desc); - /* opt_len now includes the length of the tree representations, except - * the lengths of the bit lengths codes and the 5+5+4 bits for the counts. - */ - - /* Determine the number of bit length codes to send. The pkzip format - * requires that at least 4 bit length codes be sent. (appnote.txt says - * 3 but the actual value used is 4.) - */ - for (max_blindex = BL_CODES-1; max_blindex >= 3; max_blindex--) { - if (s.bl_tree[bl_order[max_blindex]*2 + 1]/*.Len*/ !== 0) { - break; - } - } - /* Update opt_len to include the bit length tree and counts */ - s.opt_len += 3*(max_blindex+1) + 5+5+4; - //Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld", - // s->opt_len, s->static_len)); - - return max_blindex; -} - - -/* =========================================================================== - * Send the header for a block using dynamic Huffman trees: the counts, the - * lengths of the bit length codes, the literal tree and the distance tree. - * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4. - */ -function send_all_trees(s, lcodes, dcodes, blcodes) -// deflate_state *s; -// int lcodes, dcodes, blcodes; /* number of codes for each tree */ -{ - var rank; /* index in bl_order */ - - //Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes"); - //Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES, - // "too many codes"); - //Tracev((stderr, "\nbl counts: ")); - send_bits(s, lcodes-257, 5); /* not +255 as stated in appnote.txt */ - send_bits(s, dcodes-1, 5); - send_bits(s, blcodes-4, 4); /* not -3 as stated in appnote.txt */ - for (rank = 0; rank < blcodes; rank++) { - //Tracev((stderr, "\nbl code %2d ", bl_order[rank])); - send_bits(s, s.bl_tree[bl_order[rank]*2 + 1]/*.Len*/, 3); - } - //Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent)); - - send_tree(s, s.dyn_ltree, lcodes-1); /* literal tree */ - //Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent)); - - send_tree(s, s.dyn_dtree, dcodes-1); /* distance tree */ - //Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent)); -} - - -/* =========================================================================== - * Check if the data type is TEXT or BINARY, using the following algorithm: - * - TEXT if the two conditions below are satisfied: - * a) There are no non-portable control characters belonging to the - * "black list" (0..6, 14..25, 28..31). - * b) There is at least one printable character belonging to the - * "white list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255). - * - BINARY otherwise. - * - The following partially-portable control characters form a - * "gray list" that is ignored in this detection algorithm: - * (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}). - * IN assertion: the fields Freq of dyn_ltree are set. - */ -function detect_data_type(s) { - /* black_mask is the bit mask of black-listed bytes - * set bits 0..6, 14..25, and 28..31 - * 0xf3ffc07f = binary 11110011111111111100000001111111 - */ - var black_mask = 0xf3ffc07f; - var n; - - /* Check for non-textual ("black-listed") bytes. */ - for (n = 0; n <= 31; n++, black_mask >>>= 1) { - if ((black_mask & 1) && (s.dyn_ltree[n*2]/*.Freq*/ !== 0)) { - return Z_BINARY; - } - } - - /* Check for textual ("white-listed") bytes. */ - if (s.dyn_ltree[9 * 2]/*.Freq*/ !== 0 || s.dyn_ltree[10 * 2]/*.Freq*/ !== 0 || - s.dyn_ltree[13 * 2]/*.Freq*/ !== 0) { - return Z_TEXT; - } - for (n = 32; n < LITERALS; n++) { - if (s.dyn_ltree[n * 2]/*.Freq*/ !== 0) { - return Z_TEXT; - } - } - - /* There are no "black-listed" or "white-listed" bytes: - * this stream either is empty or has tolerated ("gray-listed") bytes only. - */ - return Z_BINARY; -} - - -var static_init_done = false; - -/* =========================================================================== - * Initialize the tree data structures for a new zlib stream. - */ -function _tr_init(s) -{ - - if (!static_init_done) { - tr_static_init(); - static_init_done = true; - } - - s.l_desc = new TreeDesc(s.dyn_ltree, static_l_desc); - s.d_desc = new TreeDesc(s.dyn_dtree, static_d_desc); - s.bl_desc = new TreeDesc(s.bl_tree, static_bl_desc); - - s.bi_buf = 0; - s.bi_valid = 0; - - /* Initialize the first block of the first file: */ - init_block(s); -} - - -/* =========================================================================== - * Send a stored block - */ -function _tr_stored_block(s, buf, stored_len, last) -//DeflateState *s; -//charf *buf; /* input block */ -//ulg stored_len; /* length of input block */ -//int last; /* one if this is the last block for a file */ -{ - send_bits(s, (STORED_BLOCK<<1)+(last ? 1 : 0), 3); /* send block type */ - copy_block(s, buf, stored_len, true); /* with header */ -} - - -/* =========================================================================== - * Send one empty static block to give enough lookahead for inflate. - * This takes 10 bits, of which 7 may remain in the bit buffer. - */ -function _tr_align(s) { - send_bits(s, STATIC_TREES<<1, 3); - send_code(s, END_BLOCK, static_ltree); - bi_flush(s); -} - - -/* =========================================================================== - * Determine the best encoding for the current block: dynamic trees, static - * trees or store, and output the encoded block to the zip file. - */ -function _tr_flush_block(s, buf, stored_len, last) -//DeflateState *s; -//charf *buf; /* input block, or NULL if too old */ -//ulg stored_len; /* length of input block */ -//int last; /* one if this is the last block for a file */ -{ - var opt_lenb, static_lenb; /* opt_len and static_len in bytes */ - var max_blindex = 0; /* index of last bit length code of non zero freq */ - - /* Build the Huffman trees unless a stored block is forced */ - if (s.level > 0) { - - /* Check if the file is binary or text */ - if (s.strm.data_type === Z_UNKNOWN) { - s.strm.data_type = detect_data_type(s); - } - - /* Construct the literal and distance trees */ - build_tree(s, s.l_desc); - // Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len, - // s->static_len)); - - build_tree(s, s.d_desc); - // Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len, - // s->static_len)); - /* At this point, opt_len and static_len are the total bit lengths of - * the compressed block data, excluding the tree representations. - */ - - /* Build the bit length tree for the above two trees, and get the index - * in bl_order of the last bit length code to send. - */ - max_blindex = build_bl_tree(s); - - /* Determine the best encoding. Compute the block lengths in bytes. */ - opt_lenb = (s.opt_len+3+7) >>> 3; - static_lenb = (s.static_len+3+7) >>> 3; - - // Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ", - // opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len, - // s->last_lit)); - - if (static_lenb <= opt_lenb) { opt_lenb = static_lenb; } - - } else { - // Assert(buf != (char*)0, "lost buf"); - opt_lenb = static_lenb = stored_len + 5; /* force a stored block */ - } - - if ((stored_len+4 <= opt_lenb) && (buf !== -1)) { - /* 4: two words for the lengths */ - - /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE. - * Otherwise we can't have processed more than WSIZE input bytes since - * the last block flush, because compression would have been - * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to - * transform a block into a stored block. - */ - _tr_stored_block(s, buf, stored_len, last); - - } else if (s.strategy === Z_FIXED || static_lenb === opt_lenb) { - - send_bits(s, (STATIC_TREES<<1) + (last ? 1 : 0), 3); - compress_block(s, static_ltree, static_dtree); - - } else { - send_bits(s, (DYN_TREES<<1) + (last ? 1 : 0), 3); - send_all_trees(s, s.l_desc.max_code+1, s.d_desc.max_code+1, max_blindex+1); - compress_block(s, s.dyn_ltree, s.dyn_dtree); - } - // Assert (s->compressed_len == s->bits_sent, "bad compressed size"); - /* The above check is made mod 2^32, for files larger than 512 MB - * and uLong implemented on 32 bits. - */ - init_block(s); - - if (last) { - bi_windup(s); - } - // Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3, - // s->compressed_len-7*last)); -} - -/* =========================================================================== - * Save the match info and tally the frequency counts. Return true if - * the current block must be flushed. - */ -function _tr_tally(s, dist, lc) -// deflate_state *s; -// unsigned dist; /* distance of matched string */ -// unsigned lc; /* match length-MIN_MATCH or unmatched char (if dist==0) */ -{ - //var out_length, in_length, dcode; - - s.pending_buf[s.d_buf + s.last_lit * 2] = (dist >>> 8) & 0xff; - s.pending_buf[s.d_buf + s.last_lit * 2 + 1] = dist & 0xff; - - s.pending_buf[s.l_buf + s.last_lit] = lc & 0xff; - s.last_lit++; - - if (dist === 0) { - /* lc is the unmatched char */ - s.dyn_ltree[lc*2]/*.Freq*/++; - } else { - s.matches++; - /* Here, lc is the match length - MIN_MATCH */ - dist--; /* dist = match distance - 1 */ - //Assert((ush)dist < (ush)MAX_DIST(s) && - // (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) && - // (ush)d_code(dist) < (ush)D_CODES, "_tr_tally: bad match"); - - s.dyn_ltree[(_length_code[lc]+LITERALS+1) * 2]/*.Freq*/++; - s.dyn_dtree[d_code(dist) * 2]/*.Freq*/++; - } - -// (!) This block is disabled in zlib defailts, -// don't enable it for binary compatibility - -//#ifdef TRUNCATE_BLOCK -// /* Try to guess if it is profitable to stop the current block here */ -// if ((s.last_lit & 0x1fff) === 0 && s.level > 2) { -// /* Compute an upper bound for the compressed length */ -// out_length = s.last_lit*8; -// in_length = s.strstart - s.block_start; -// -// for (dcode = 0; dcode < D_CODES; dcode++) { -// out_length += s.dyn_dtree[dcode*2]/*.Freq*/ * (5 + extra_dbits[dcode]); -// } -// out_length >>>= 3; -// //Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ", -// // s->last_lit, in_length, out_length, -// // 100L - out_length*100L/in_length)); -// if (s.matches < (s.last_lit>>1)/*int /2*/ && out_length < (in_length>>1)/*int /2*/) { -// return true; -// } -// } -//#endif - - return (s.last_lit === s.lit_bufsize-1); - /* We avoid equality with lit_bufsize because of wraparound at 64K - * on 16 bit machines and because stored blocks are restricted to - * 64K-1 bytes. - */ -} - -exports._tr_init = _tr_init; -exports._tr_stored_block = _tr_stored_block; -exports._tr_flush_block = _tr_flush_block; -exports._tr_tally = _tr_tally; -exports._tr_align = _tr_align; -},{"../utils/common":4}],16:[function(_dereq_,module,exports){ -'use strict'; - - -function ZStream() { - /* next input byte */ - this.input = null; // JS specific, because we have no pointers - this.next_in = 0; - /* number of bytes available at input */ - this.avail_in = 0; - /* total number of input bytes read so far */ - this.total_in = 0; - /* next output byte should be put there */ - this.output = null; // JS specific, because we have no pointers - this.next_out = 0; - /* remaining free space at output */ - this.avail_out = 0; - /* total number of bytes output so far */ - this.total_out = 0; - /* last error message, NULL if no error */ - this.msg = ''/*Z_NULL*/; - /* not visible by applications */ - this.state = null; - /* best guess about the data type: binary or text */ - 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0===t.avail_out&&(o.last_flush=-1),L;if(c===pe&&(e===O?Z._tr_align(o):e!==F&&(Z._tr_stored_block(o,0,0,!1),e===T&&(r(o.head),0===o.lookahead&&(o.strstart=0,o.block_start=0,o.insert=0))),s(t),0===t.avail_out))return o.last_flush=-1,L}return e!==D?L:o.wrap<=0?U:(2===o.wrap?(l(o,255&t.adler),l(o,t.adler>>8&255),l(o,t.adler>>16&255),l(o,t.adler>>24&255),l(o,255&t.total_in),l(o,t.total_in>>8&255),l(o,t.total_in>>16&255),l(o,t.total_in>>24&255)):(h(o,t.adler>>>16),h(o,65535&t.adler)),s(t),o.wrap>0&&(o.wrap=-o.wrap),0!==o.pending?L:U)}function S(t){var e;return t&&t.state?(e=t.state.status,e!==fe&&e!==_e&&e!==ue&&e!==ce&&e!==be&&e!==ge&&e!==me?i(t,H):(t.state=null,e===ge?i(t,j):L)):H}var E,A=t("../utils/common"),Z=t("./trees"),R=t("./adler32"),C=t("./crc32"),I=t("./messages"),N=0,O=1,T=3,D=4,F=5,L=0,U=1,H=-2,j=-3,M=-5,K=-1,P=1,q=2,Y=3,G=4,X=0,W=2,J=8,Q=9,V=15,$=8,te=29,ee=256,ae=ee+1+te,ie=30,ne=19,re=2*ae+1,se=15,oe=3,le=258,he=le+oe+1,de=32,fe=42,_e=69,ue=73,ce=91,be=103,ge=113,me=666,we=1,pe=2,ve=3,ke=4,xe=3,ye=function(t,e,a,i,n){this.good_length=t,this.max_lazy=e,this.nice_length=a,this.max_chain=i,this.func=n};E=[new ye(0,0,0,0,u),new ye(4,4,8,4,c),new ye(4,5,16,8,c),new ye(4,6,32,32,c),new ye(4,4,16,16,b),new ye(8,16,32,32,b),new ye(8,16,128,128,b),new ye(8,32,128,256,b),new ye(32,128,258,1024,b),new ye(32,258,258,4096,b)],a.deflateInit=z,a.deflateInit2=y,a.deflateReset=k,a.deflateResetKeep=v,a.deflateSetHeader=x,a.deflate=B,a.deflateEnd=S,a.deflateInfo="pako deflate (from Nodeca project)"},{"../utils/common":4,"./adler32":6,"./crc32":8,"./messages":14,"./trees":15}],10:[function(t,e){"use strict";function a(){this.text=0,this.time=0,this.xflags=0,this.os=0,this.extra=null,this.extra_len=0,this.name="",this.comment="",this.hcrc=0,this.done=!1}e.exports=a},{}],11:[function(t,e){"use strict";var a=30,i=12;e.exports=function(t,e){var n,r,s,o,l,h,d,f,_,u,c,b,g,m,w,p,v,k,x,y,z,B,S,E,A;n=t.state,r=t.next_in,E=t.input,s=r+(t.avail_in-5),o=t.next_out,A=t.output,l=o-(e-t.avail_out),h=o+(t.avail_out-257),d=n.dmax,f=n.wsize,_=n.whave,u=n.wnext,c=n.window,b=n.hold,g=n.bits,m=n.lencode,w=n.distcode,p=(1<g&&(b+=E[r++]<>>24,b>>>=x,g-=x,x=k>>>16&255,0===x)A[o++]=65535&k;else{if(!(16&x)){if(0===(64&x)){k=m[(65535&k)+(b&(1<g&&(b+=E[r++]<>>=x,g-=x),15>g&&(b+=E[r++]<>>24,b>>>=x,g-=x,x=k>>>16&255,!(16&x)){if(0===(64&x)){k=w[(65535&k)+(b&(1<g&&(b+=E[r++]<g&&(b+=E[r++]<d){t.msg="invalid distance too far back",n.mode=a;break t}if(b>>>=x,g-=x,x=o-l,z>x){if(x=z-x,x>_&&n.sane){t.msg="invalid distance too far back",n.mode=a;break t}if(B=0,S=c,0===u){if(B+=f-x,y>x){y-=x;do A[o++]=c[B++];while(--x);B=o-z,S=A}}else if(x>u){if(B+=f+u-x,x-=u,y>x){y-=x;do A[o++]=c[B++];while(--x);if(B=0,y>u){x=u,y-=x;do A[o++]=c[B++];while(--x);B=o-z,S=A}}}else if(B+=u-x,y>x){y-=x;do A[o++]=c[B++];while(--x);B=o-z,S=A}for(;y>2;)A[o++]=S[B++],A[o++]=S[B++],A[o++]=S[B++],y-=3;y&&(A[o++]=S[B++],y>1&&(A[o++]=S[B++]))}else{B=o-z;do A[o++]=A[B++],A[o++]=A[B++],A[o++]=A[B++],y-=3;while(y>2);y&&(A[o++]=A[B++],y>1&&(A[o++]=A[B++]))}break}}break}}while(s>r&&h>o);y=g>>3,r-=y,g-=y<<3,b&=(1<r?5+(s-r):5-(r-s),t.avail_out=h>o?257+(h-o):257-(o-h),n.hold=b,n.bits=g}},{}],12:[function(t,e,a){"use strict";function i(t){return(t>>>24&255)+(t>>>8&65280)+((65280&t)<<8)+((255&t)<<24)}function n(){this.mode=0,this.last=!1,this.wrap=0,this.havedict=!1,this.flags=0,this.dmax=0,this.check=0,this.total=0,this.head=null,this.wbits=0,this.wsize=0,this.whave=0,this.wnext=0,this.window=null,this.hold=0,this.bits=0,this.length=0,this.offset=0,this.extra=0,this.lencode=null,this.distcode=null,this.lenbits=0,this.distbits=0,this.ncode=0,this.nlen=0,this.ndist=0,this.have=0,this.next=null,this.lens=new m.Buf16(320),this.work=new m.Buf16(288),this.lendyn=null,this.distdyn=null,this.sane=0,this.back=0,this.was=0}function r(t){var e;return t&&t.state?(e=t.state,t.total_in=t.total_out=e.total=0,t.msg="",e.wrap&&(t.adler=1&e.wrap),e.mode=D,e.last=0,e.havedict=0,e.dmax=32768,e.head=null,e.hold=0,e.bits=0,e.lencode=e.lendyn=new m.Buf32(ce),e.distcode=e.distdyn=new m.Buf32(be),e.sane=1,e.back=-1,A):C}function s(t){var e;return t&&t.state?(e=t.state,e.wsize=0,e.whave=0,e.wnext=0,r(t)):C}function o(t,e){var a,i;return t&&t.state?(i=t.state,0>e?(a=0,e=-e):(a=(e>>4)+1,48>e&&(e&=15)),e&&(8>e||e>15)?C:(null!==i.window&&i.wbits!==e&&(i.window=null),i.wrap=a,i.wbits=e,s(t))):C}function l(t,e){var a,i;return t?(i=new n,t.state=i,i.window=null,a=o(t,e),a!==A&&(t.state=null),a):C}function h(t){return l(t,me)}function d(t){if(we){var e;for(b=new m.Buf32(512),g=new m.Buf32(32),e=0;144>e;)t.lens[e++]=8;for(;256>e;)t.lens[e++]=9;for(;280>e;)t.lens[e++]=7;for(;288>e;)t.lens[e++]=8;for(k(y,t.lens,0,288,b,0,t.work,{bits:9}),e=0;32>e;)t.lens[e++]=5;k(z,t.lens,0,32,g,0,t.work,{bits:5}),we=!1}t.lencode=b,t.lenbits=9,t.distcode=g,t.distbits=5}function f(t,e,a,i){var n,r=t.state;return null===r.window&&(r.wsize=1<=r.wsize?(m.arraySet(r.window,e,a-r.wsize,r.wsize,0),r.wnext=0,r.whave=r.wsize):(n=r.wsize-r.wnext,n>i&&(n=i),m.arraySet(r.window,e,a-i,n,r.wnext),i-=n,i?(m.arraySet(r.window,e,a-i,i,0),r.wnext=i,r.whave=r.wsize):(r.wnext+=n,r.wnext===r.wsize&&(r.wnext=0),r.whaveu;){if(0===l)break t;l--,_+=n[s++]<>>8&255,a.check=p(a.check,Ee,2,0),_=0,u=0,a.mode=F;break}if(a.flags=0,a.head&&(a.head.done=!1),!(1&a.wrap)||(((255&_)<<8)+(_>>8))%31){t.msg="incorrect header check",a.mode=fe;break}if((15&_)!==T){t.msg="unknown compression method",a.mode=fe;break}if(_>>>=4,u-=4,xe=(15&_)+8,0===a.wbits)a.wbits=xe;else if(xe>a.wbits){t.msg="invalid window size",a.mode=fe;break}a.dmax=1<u;){if(0===l)break t;l--,_+=n[s++]<>8&1),512&a.flags&&(Ee[0]=255&_,Ee[1]=_>>>8&255,a.check=p(a.check,Ee,2,0)),_=0,u=0,a.mode=L;case L:for(;32>u;){if(0===l)break t;l--,_+=n[s++]<>>8&255,Ee[2]=_>>>16&255,Ee[3]=_>>>24&255,a.check=p(a.check,Ee,4,0)),_=0,u=0,a.mode=U;case U:for(;16>u;){if(0===l)break t;l--,_+=n[s++]<>8),512&a.flags&&(Ee[0]=255&_,Ee[1]=_>>>8&255,a.check=p(a.check,Ee,2,0)),_=0,u=0,a.mode=H;case H:if(1024&a.flags){for(;16>u;){if(0===l)break t;l--,_+=n[s++]<>>8&255,a.check=p(a.check,Ee,2,0)),_=0,u=0}else a.head&&(a.head.extra=null);a.mode=j;case j:if(1024&a.flags&&(g=a.length,g>l&&(g=l),g&&(a.head&&(xe=a.head.extra_len-a.length,a.head.extra||(a.head.extra=new Array(a.head.extra_len)),m.arraySet(a.head.extra,n,s,g,xe)),512&a.flags&&(a.check=p(a.check,n,g,s)),l-=g,s+=g,a.length-=g),a.length))break t;a.length=0,a.mode=M;case M:if(2048&a.flags){if(0===l)break t;g=0;do xe=n[s+g++],a.head&&xe&&a.length<65536&&(a.head.name+=String.fromCharCode(xe));while(xe&&l>g);if(512&a.flags&&(a.check=p(a.check,n,g,s)),l-=g,s+=g,xe)break t}else a.head&&(a.head.name=null);a.length=0,a.mode=K;case K:if(4096&a.flags){if(0===l)break t;g=0;do xe=n[s+g++],a.head&&xe&&a.length<65536&&(a.head.comment+=String.fromCharCode(xe));while(xe&&l>g);if(512&a.flags&&(a.check=p(a.check,n,g,s)),l-=g,s+=g,xe)break t}else a.head&&(a.head.comment=null);a.mode=P;case P:if(512&a.flags){for(;16>u;){if(0===l)break t;l--,_+=n[s++]<>9&1,a.head.done=!0),t.adler=a.check=0,a.mode=G;break;case q:for(;32>u;){if(0===l)break t;l--,_+=n[s++]<>>=7&u,u-=7&u,a.mode=le;break}for(;3>u;){if(0===l)break t;l--,_+=n[s++]<>>=1,u-=1,3&_){case 0:a.mode=W;break;case 1:if(d(a),a.mode=ee,e===E){_>>>=2,u-=2;break t}break;case 2:a.mode=V;break;case 3:t.msg="invalid block type",a.mode=fe}_>>>=2,u-=2;break;case W:for(_>>>=7&u,u-=7&u;32>u;){if(0===l)break t;l--,_+=n[s++]<>>16^65535)){t.msg="invalid stored block lengths",a.mode=fe;break}if(a.length=65535&_,_=0,u=0,a.mode=J,e===E)break t;case J:a.mode=Q;case Q:if(g=a.length){if(g>l&&(g=l),g>h&&(g=h),0===g)break t;m.arraySet(r,n,s,g,o),l-=g,s+=g,h-=g,o+=g,a.length-=g;break}a.mode=G;break;case V:for(;14>u;){if(0===l)break t;l--,_+=n[s++]<>>=5,u-=5,a.ndist=(31&_)+1,_>>>=5,u-=5,a.ncode=(15&_)+4,_>>>=4,u-=4,a.nlen>286||a.ndist>30){t.msg="too many length or distance symbols",a.mode=fe;break}a.have=0,a.mode=$;case $:for(;a.haveu;){if(0===l)break t;l--,_+=n[s++]<>>=3,u-=3}for(;a.have<19;)a.lens[Ae[a.have++]]=0;if(a.lencode=a.lendyn,a.lenbits=7,ze={bits:a.lenbits},ye=k(x,a.lens,0,19,a.lencode,0,a.work,ze),a.lenbits=ze.bits,ye){t.msg="invalid code lengths set",a.mode=fe;break}a.have=0,a.mode=te;case te:for(;a.have>>24,me=Se>>>16&255,we=65535&Se,!(u>=ge);){if(0===l)break t;l--,_+=n[s++]<we)_>>>=ge,u-=ge,a.lens[a.have++]=we;else{if(16===we){for(Be=ge+2;Be>u;){if(0===l)break t;l--,_+=n[s++]<>>=ge,u-=ge,0===a.have){t.msg="invalid bit length repeat",a.mode=fe;break}xe=a.lens[a.have-1],g=3+(3&_),_>>>=2,u-=2}else if(17===we){for(Be=ge+3;Be>u;){if(0===l)break t;l--,_+=n[s++]<>>=ge,u-=ge,xe=0,g=3+(7&_),_>>>=3,u-=3}else{for(Be=ge+7;Be>u;){if(0===l)break t;l--,_+=n[s++]<>>=ge,u-=ge,xe=0,g=11+(127&_),_>>>=7,u-=7}if(a.have+g>a.nlen+a.ndist){t.msg="invalid bit length repeat",a.mode=fe;break}for(;g--;)a.lens[a.have++]=xe}}if(a.mode===fe)break;if(0===a.lens[256]){t.msg="invalid code -- missing end-of-block",a.mode=fe;break}if(a.lenbits=9,ze={bits:a.lenbits},ye=k(y,a.lens,0,a.nlen,a.lencode,0,a.work,ze),a.lenbits=ze.bits,ye){t.msg="invalid literal/lengths set",a.mode=fe;break}if(a.distbits=6,a.distcode=a.distdyn,ze={bits:a.distbits},ye=k(z,a.lens,a.nlen,a.ndist,a.distcode,0,a.work,ze),a.distbits=ze.bits,ye){t.msg="invalid distances set",a.mode=fe; -break}if(a.mode=ee,e===E)break t;case ee:a.mode=ae;case ae:if(l>=6&&h>=258){t.next_out=o,t.avail_out=h,t.next_in=s,t.avail_in=l,a.hold=_,a.bits=u,v(t,b),o=t.next_out,r=t.output,h=t.avail_out,s=t.next_in,n=t.input,l=t.avail_in,_=a.hold,u=a.bits,a.mode===G&&(a.back=-1);break}for(a.back=0;Se=a.lencode[_&(1<>>24,me=Se>>>16&255,we=65535&Se,!(u>=ge);){if(0===l)break t;l--,_+=n[s++]<>pe)],ge=Se>>>24,me=Se>>>16&255,we=65535&Se,!(u>=pe+ge);){if(0===l)break t;l--,_+=n[s++]<>>=pe,u-=pe,a.back+=pe}if(_>>>=ge,u-=ge,a.back+=ge,a.length=we,0===me){a.mode=oe;break}if(32&me){a.back=-1,a.mode=G;break}if(64&me){t.msg="invalid literal/length code",a.mode=fe;break}a.extra=15&me,a.mode=ie;case ie:if(a.extra){for(Be=a.extra;Be>u;){if(0===l)break t;l--,_+=n[s++]<>>=a.extra,u-=a.extra,a.back+=a.extra}a.was=a.length,a.mode=ne;case ne:for(;Se=a.distcode[_&(1<>>24,me=Se>>>16&255,we=65535&Se,!(u>=ge);){if(0===l)break t;l--,_+=n[s++]<>pe)],ge=Se>>>24,me=Se>>>16&255,we=65535&Se,!(u>=pe+ge);){if(0===l)break t;l--,_+=n[s++]<>>=pe,u-=pe,a.back+=pe}if(_>>>=ge,u-=ge,a.back+=ge,64&me){t.msg="invalid distance code",a.mode=fe;break}a.offset=we,a.extra=15&me,a.mode=re;case re:if(a.extra){for(Be=a.extra;Be>u;){if(0===l)break t;l--,_+=n[s++]<>>=a.extra,u-=a.extra,a.back+=a.extra}if(a.offset>a.dmax){t.msg="invalid distance too far back",a.mode=fe;break}a.mode=se;case se:if(0===h)break t;if(g=b-h,a.offset>g){if(g=a.offset-g,g>a.whave&&a.sane){t.msg="invalid distance too far back",a.mode=fe;break}g>a.wnext?(g-=a.wnext,ce=a.wsize-g):ce=a.wnext-g,g>a.length&&(g=a.length),be=a.window}else be=r,ce=o-a.offset,g=a.length;g>h&&(g=h),h-=g,a.length-=g;do 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q=0;;){q++,B=Z-T,m[R]z?(S=K[P+m[R]],E=U[H+m[R]]):(S=96,E=0),p=1<>T)+v]=B<<24|S<<16|E|0;while(0!==v);for(p=1<>=1;if(0!==p?(L&=p-1,L+=p):L=0,R++,0===--j[Z]){if(Z===I)break;Z=e[u+m[R]]}if(Z>N&&(L&x)!==k){for(0===T&&(T=N),y+=C,O=Z-T,D=1<O+T&&(D-=j[O+T],!(0>=D));)O++,D<<=1;if(F+=1<n||t===l&&F>r)return 1;k=L&x,b[k]=N<<24|O<<16|y-g|0}}return 0!==L&&(b[y+L]=Z-T<<24|64<<16|0),w.bits=N,0}},{"../utils/common":4}],14:[function(t,e){"use strict";e.exports={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"}},{}],15:[function(t,e,a){"use strict";function i(t){for(var e=t.length;--e>=0;)t[e]=0}function n(t){return 256>t?se[t]:se[256+(t>>>7)]}function r(t,e){t.pending_buf[t.pending++]=255&e,t.pending_buf[t.pending++]=e>>>8&255}function s(t,e,a){t.bi_valid>G-a?(t.bi_buf|=e<>G-t.bi_valid,t.bi_valid+=a-G):(t.bi_buf|=e<>>=1,a<<=1;while(--e>0);return a>>>1}function h(t){16===t.bi_valid?(r(t,t.bi_buf),t.bi_buf=0,t.bi_valid=0):t.bi_valid>=8&&(t.pending_buf[t.pending++]=255&t.bi_buf,t.bi_buf>>=8,t.bi_valid-=8)}function d(t,e){var a,i,n,r,s,o,l=e.dyn_tree,h=e.max_code,d=e.stat_desc.static_tree,f=e.stat_desc.has_stree,_=e.stat_desc.extra_bits,u=e.stat_desc.extra_base,c=e.stat_desc.max_length,b=0;for(r=0;Y>=r;r++)t.bl_count[r]=0;for(l[2*t.heap[t.heap_max]+1]=0,a=t.heap_max+1;q>a;a++)i=t.heap[a],r=l[2*l[2*i+1]+1]+1,r>c&&(r=c,b++),l[2*i+1]=r,i>h||(t.bl_count[r]++,s=0,i>=u&&(s=_[i-u]),o=l[2*i],t.opt_len+=o*(r+s),f&&(t.static_len+=o*(d[2*i+1]+s)));if(0!==b){do{for(r=c-1;0===t.bl_count[r];)r--;t.bl_count[r]--,t.bl_count[r+1]+=2,t.bl_count[c]--,b-=2}while(b>0);for(r=c;0!==r;r--)for(i=t.bl_count[r];0!==i;)n=t.heap[--a],n>h||(l[2*n+1]!==r&&(t.opt_len+=(r-l[2*n+1])*l[2*n],l[2*n+1]=r),i--)}}function f(t,e,a){var i,n,r=new Array(Y+1),s=0;for(i=1;Y>=i;i++)r[i]=s=s+a[i-1]<<1;for(n=0;e>=n;n++){var o=t[2*n+1];0!==o&&(t[2*n]=l(r[o]++,o))}}function _(){var 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t[n]a;a++)0!==r[2*a]?(t.heap[++t.heap_len]=h=a,t.depth[a]=0):r[2*a+1]=0;for(;t.heap_len<2;)n=t.heap[++t.heap_len]=2>h?++h:0,r[2*n]=1,t.depth[n]=0,t.opt_len--,o&&(t.static_len-=s[2*n+1]);for(e.max_code=h,a=t.heap_len>>1;a>=1;a--)m(t,r,a);n=l;do a=t.heap[1],t.heap[1]=t.heap[t.heap_len--],m(t,r,1),i=t.heap[1],t.heap[--t.heap_max]=a,t.heap[--t.heap_max]=i,r[2*n]=r[2*a]+r[2*i],t.depth[n]=(t.depth[a]>=t.depth[i]?t.depth[a]:t.depth[i])+1,r[2*a+1]=r[2*i+1]=n,t.heap[1]=n++,m(t,r,1);while(t.heap_len>=2);t.heap[--t.heap_max]=t.heap[1],d(t,e),f(r,h,t.bl_count)}function v(t,e,a){var i,n,r=-1,s=e[1],o=0,l=7,h=4;for(0===s&&(l=138,h=3),e[2*(a+1)+1]=65535,i=0;a>=i;i++)n=s,s=e[2*(i+1)+1],++oo?t.bl_tree[2*n]+=o:0!==n?(n!==r&&t.bl_tree[2*n]++,t.bl_tree[2*J]++):10>=o?t.bl_tree[2*Q]++:t.bl_tree[2*V]++,o=0,r=n,0===s?(l=138,h=3):n===s?(l=6,h=3):(l=7,h=4))}function k(t,e,a){var i,n,r=-1,l=e[1],h=0,d=7,f=4;for(0===l&&(d=138,f=3),i=0;a>=i;i++)if(n=l,l=e[2*(i+1)+1],!(++hh){do o(t,n,t.bl_tree);while(0!==--h)}else 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R=t("../utils/common"),C=4,I=0,N=1,O=2,T=0,D=1,F=2,L=3,U=258,H=29,j=256,M=j+1+H,K=30,P=19,q=2*M+1,Y=15,G=16,X=7,W=256,J=16,Q=17,V=18,$=[0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0],te=[0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13],ee=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7],ae=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],ie=512,ne=new Array(2*(M+2));i(ne);var re=new Array(2*K);i(re);var se=new Array(ie);i(se);var oe=new Array(U-L+1);i(oe);var le=new Array(H);i(le);var he=new Array(K);i(he);var de,fe,_e,ue=function(t,e,a,i,n){this.static_tree=t,this.extra_bits=e,this.extra_base=a,this.elems=i,this.max_length=n,this.has_stree=t&&t.length},ce=function(t,e){this.dyn_tree=t,this.max_code=0,this.stat_desc=e},be=!1;a._tr_init=B,a._tr_stored_block=S,a._tr_flush_block=A,a._tr_tally=Z,a._tr_align=E},{"../utils/common":4}],16:[function(t,e){"use strict";function a(){this.input=null,this.next_in=0,this.avail_in=0,this.total_in=0,this.output=null,this.next_out=0,this.avail_out=0,this.total_out=0,this.msg="",this.state=null,this.data_type=2,this.adler=0}e.exports=a},{}]},{},[1])(1)}); \ No newline at end of file diff --git a/modules/pako/dist/pako_deflate.js b/modules/pako/dist/pako_deflate.js deleted file mode 100644 index 1f947205..00000000 --- a/modules/pako/dist/pako_deflate.js +++ /dev/null @@ -1,3740 +0,0 @@ -/* pako 0.2.5 nodeca/pako */!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.pako=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o Array - * - * Chunks of output data, if [[Deflate#onData]] not overriden. - **/ - -/** - * Deflate.result -> Uint8Array|Array - * - * Compressed result, generated by default [[Deflate#onData]] - * and [[Deflate#onEnd]] handlers. Filled after you push last chunk - * (call [[Deflate#push]] with `Z_FINISH` / `true` param). - **/ - -/** - * Deflate.err -> Number - * - * Error code after deflate finished. 0 (Z_OK) on success. - * You will not need it in real life, because deflate errors - * are possible only on wrong options or bad `onData` / `onEnd` - * custom handlers. - **/ - -/** - * Deflate.msg -> String - * - * Error message, if [[Deflate.err]] != 0 - **/ - - -/** - * new Deflate(options) - * - options (Object): zlib deflate options. - * - * Creates new deflator instance with specified params. Throws exception - * on bad params. Supported options: - * - * - `level` - * - `windowBits` - * - `memLevel` - * - `strategy` - * - * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced) - * for more information on these. - * - * Additional options, for internal needs: - * - * - `chunkSize` - size of generated data chunks (16K by default) - * - `raw` (Boolean) - do raw deflate - * - `gzip` (Boolean) - create gzip wrapper - * - `to` (String) - if equal to 'string', then result will be "binary string" - * (each char code [0..255]) - * - `header` (Object) - custom header for gzip - * - `text` (Boolean) - true if compressed data believed to be text - * - `time` (Number) - modification time, unix timestamp - * - `os` (Number) - operation system code - * - `extra` (Array) - array of bytes with extra data (max 65536) - * - `name` (String) - file name (binary string) - * - `comment` (String) - comment (binary string) - * - `hcrc` (Boolean) - true if header crc should be added - * - * ##### Example: - * - * ```javascript - * var pako = require('pako') - * , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9]) - * , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]); - * - * var deflate = new pako.Deflate({ level: 3}); - * - * deflate.push(chunk1, false); - * deflate.push(chunk2, true); // true -> last chunk - * - * if (deflate.err) { throw new Error(deflate.err); } - * - * console.log(deflate.result); - * ``` - **/ -var Deflate = function(options) { - - this.options = utils.assign({ - level: Z_DEFAULT_COMPRESSION, - method: Z_DEFLATED, - chunkSize: 16384, - windowBits: 15, - memLevel: 8, - strategy: Z_DEFAULT_STRATEGY, - to: '' - }, options || {}); - - var opt = this.options; - - if (opt.raw && (opt.windowBits > 0)) { - opt.windowBits = -opt.windowBits; - } - - else if (opt.gzip && (opt.windowBits > 0) && (opt.windowBits < 16)) { - opt.windowBits += 16; - } - - this.err = 0; // error code, if happens (0 = Z_OK) - this.msg = ''; // error message - this.ended = false; // used to avoid multiple onEnd() calls - this.chunks = []; // chunks of compressed data - - this.strm = new zstream(); - this.strm.avail_out = 0; - - var status = zlib_deflate.deflateInit2( - this.strm, - opt.level, - opt.method, - opt.windowBits, - opt.memLevel, - opt.strategy - ); - - if (status !== Z_OK) { - throw new Error(msg[status]); - } - - if (opt.header) { - zlib_deflate.deflateSetHeader(this.strm, opt.header); - } -}; - -/** - * Deflate#push(data[, mode]) -> Boolean - * - data (Uint8Array|Array|String): input data. Strings will be converted to - * utf8 byte sequence. - * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes. - * See constants. Skipped or `false` means Z_NO_FLUSH, `true` meansh Z_FINISH. - * - * Sends input data to deflate pipe, generating [[Deflate#onData]] calls with - * new compressed chunks. Returns `true` on success. The last data block must have - * mode Z_FINISH (or `true`). That flush internal pending buffers and call - * [[Deflate#onEnd]]. - * - * On fail call [[Deflate#onEnd]] with error code and return false. - * - * We strongly recommend to use `Uint8Array` on input for best speed (output - * array format is detected automatically). Also, don't skip last param and always - * use the same type in your code (boolean or number). That will improve JS speed. - * - * For regular `Array`-s make sure all elements are [0..255]. - * - * ##### Example - * - * ```javascript - * push(chunk, false); // push one of data chunks - * ... - * push(chunk, true); // push last chunk - * ``` - **/ -Deflate.prototype.push = function(data, mode) { - var strm = this.strm; - var chunkSize = this.options.chunkSize; - var status, _mode; - - if (this.ended) { return false; } - - _mode = (mode === ~~mode) ? mode : ((mode === true) ? Z_FINISH : Z_NO_FLUSH); - - // Convert data if needed - if (typeof data === 'string') { - // If we need to compress text, change encoding to utf8. - strm.input = strings.string2buf(data); - } else { - strm.input = data; - } - - strm.next_in = 0; - strm.avail_in = strm.input.length; - - do { - if (strm.avail_out === 0) { - strm.output = new utils.Buf8(chunkSize); - strm.next_out = 0; - strm.avail_out = chunkSize; - } - status = zlib_deflate.deflate(strm, _mode); /* no bad return value */ - - if (status !== Z_STREAM_END && status !== Z_OK) { - this.onEnd(status); - this.ended = true; - return false; - } - if (strm.avail_out === 0 || (strm.avail_in === 0 && _mode === Z_FINISH)) { - if (this.options.to === 'string') { - this.onData(strings.buf2binstring(utils.shrinkBuf(strm.output, strm.next_out))); - } else { - this.onData(utils.shrinkBuf(strm.output, strm.next_out)); - } - } - } while ((strm.avail_in > 0 || strm.avail_out === 0) && status !== Z_STREAM_END); - - // Finalize on the last chunk. - if (_mode === Z_FINISH) { - status = zlib_deflate.deflateEnd(this.strm); - this.onEnd(status); - this.ended = true; - return status === Z_OK; - } - - return true; -}; - - -/** - * Deflate#onData(chunk) -> Void - * - chunk (Uint8Array|Array|String): ouput data. Type of array depends - * on js engine support. When string output requested, each chunk - * will be string. - * - * By default, stores data blocks in `chunks[]` property and glue - * those in `onEnd`. Override this handler, if you need another behaviour. - **/ -Deflate.prototype.onData = function(chunk) { - this.chunks.push(chunk); -}; - - -/** - * Deflate#onEnd(status) -> Void - * - status (Number): deflate status. 0 (Z_OK) on success, - * other if not. - * - * Called once after you tell deflate that input stream complete - * or error happenned. By default - join collected chunks, - * free memory and fill `results` / `err` properties. - **/ -Deflate.prototype.onEnd = function(status) { - // On success - join - if (status === Z_OK) { - if (this.options.to === 'string') { - this.result = this.chunks.join(''); - } else { - this.result = utils.flattenChunks(this.chunks); - } - } - this.chunks = []; - this.err = status; - this.msg = this.strm.msg; -}; - - -/** - * deflate(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to compress. - * - options (Object): zlib deflate options. - * - * Compress `data` with deflate alrorythm and `options`. - * - * Supported options are: - * - * - level - * - windowBits - * - memLevel - * - strategy - * - * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced) - * for more information on these. - * - * Sugar (options): - * - * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify - * negative windowBits implicitly. - * - `to` (String) - if equal to 'string', then result will be "binary string" - * (each char code [0..255]) - * - * ##### Example: - * - * ```javascript - * var pako = require('pako') - * , data = Uint8Array([1,2,3,4,5,6,7,8,9]); - * - * console.log(pako.deflate(data)); - * ``` - **/ -function deflate(input, options) { - var deflator = new Deflate(options); - - deflator.push(input, true); - - // That will never happens, if you don't cheat with options :) - if (deflator.err) { throw deflator.msg; } - - return deflator.result; -} - - -/** - * deflateRaw(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to compress. - * - options (Object): zlib deflate options. - * - * The same as [[deflate]], but creates raw data, without wrapper - * (header and adler32 crc). - **/ -function deflateRaw(input, options) { - options = options || {}; - options.raw = true; - return deflate(input, options); -} - - -/** - * gzip(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to compress. - * - options (Object): zlib deflate options. - * - * The same as [[deflate]], but create gzip wrapper instead of - * deflate one. - **/ -function gzip(input, options) { - options = options || {}; - options.gzip = true; - return deflate(input, options); -} - - -exports.Deflate = Deflate; -exports.deflate = deflate; -exports.deflateRaw = deflateRaw; -exports.gzip = gzip; -},{"./utils/common":2,"./utils/strings":3,"./zlib/deflate.js":6,"./zlib/messages":7,"./zlib/zstream":9}],2:[function(_dereq_,module,exports){ -'use strict'; - - -var TYPED_OK = (typeof Uint8Array !== 'undefined') && - (typeof Uint16Array !== 'undefined') && - (typeof Int32Array !== 'undefined'); - - -exports.assign = function (obj /*from1, from2, from3, ...*/) { - var sources = Array.prototype.slice.call(arguments, 1); - while (sources.length) { - var source = sources.shift(); - if (!source) { continue; } - - if (typeof(source) !== 'object') { - throw new TypeError(source + 'must be non-object'); - } - - for (var p in source) { - if (source.hasOwnProperty(p)) { - obj[p] = source[p]; - } - } - } - - return obj; -}; - - -// reduce buffer size, avoiding mem copy -exports.shrinkBuf = function (buf, size) { - if (buf.length === size) { return buf; } - if (buf.subarray) { return buf.subarray(0, size); } - buf.length = size; - return buf; -}; - - -var fnTyped = { - arraySet: function (dest, src, src_offs, len, dest_offs) { - if (src.subarray && dest.subarray) { - dest.set(src.subarray(src_offs, src_offs+len), dest_offs); - return; - } - // Fallback to ordinary array - for(var i=0; i= 252 ? 6 : i >= 248 ? 5 : i >= 240 ? 4 : i >= 224 ? 3 : i >= 192 ? 2 : 1); -} -_utf8len[254]=_utf8len[254]=1; // Invalid sequence start - - -// convert string to array (typed, when possible) -exports.string2buf = function (str) { - var buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0; - - // count binary size - for (m_pos = 0; m_pos < str_len; m_pos++) { - c = str.charCodeAt(m_pos); - if ((c & 0xfc00) === 0xd800 && (m_pos+1 < str_len)) { - c2 = str.charCodeAt(m_pos+1); - if ((c2 & 0xfc00) === 0xdc00) { - c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00); - m_pos++; - } - } - buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4; - } - - // allocate buffer - buf = new utils.Buf8(buf_len); - - // convert - for (i=0, m_pos = 0; i < buf_len; m_pos++) { - c = str.charCodeAt(m_pos); - if ((c & 0xfc00) === 0xd800 && (m_pos+1 < str_len)) { - c2 = str.charCodeAt(m_pos+1); - if ((c2 & 0xfc00) === 0xdc00) { - c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00); - m_pos++; - } - } - if (c < 0x80) { - /* one byte */ - buf[i++] = c; - } else if (c < 0x800) { - /* two bytes */ - buf[i++] = 0xC0 | (c >>> 6); - buf[i++] = 0x80 | (c & 0x3f); - } else if (c < 0x10000) { - /* three bytes */ - buf[i++] = 0xE0 | (c >>> 12); - buf[i++] = 0x80 | (c >>> 6 & 0x3f); - buf[i++] = 0x80 | (c & 0x3f); - } else { - /* four bytes */ - buf[i++] = 0xf0 | (c >>> 18); - buf[i++] = 0x80 | (c >>> 12 & 0x3f); - buf[i++] = 0x80 | (c >>> 6 & 0x3f); - buf[i++] = 0x80 | (c & 0x3f); - } - } - - return buf; -}; - -// Helper (used in 2 places) -function buf2binstring(buf, len) { - // use fallback for big arrays to avoid stack overflow - if (len < 65537) { - if ((buf.subarray && STR_APPLY_UIA_OK) || (!buf.subarray && STR_APPLY_OK)) { - return String.fromCharCode.apply(null, utils.shrinkBuf(buf, len)); - } - } - - var result = ''; - for(var i=0; i < len; i++) { - result += String.fromCharCode(buf[i]); - } - return result; -} - - -// Convert byte array to binary string -exports.buf2binstring = function(buf) { - return buf2binstring(buf, buf.length); -}; - - -// Convert binary string (typed, when possible) -exports.binstring2buf = function(str) { - var buf = new utils.Buf8(str.length); - for(var i=0, len=buf.length; i < len; i++) { - buf[i] = str.charCodeAt(i); - } - return buf; -}; - - -// convert array to string -exports.buf2string = function (buf, max) { - var i, out, c, c_len; - var len = max || buf.length; - - // Reserve max possible length (2 words per char) - // NB: by unknown reasons, Array is significantly faster for - // String.fromCharCode.apply than Uint16Array. - var utf16buf = new Array(len*2); - - for (out=0, i=0; i 4) { utf16buf[out++] = 0xfffd; i += c_len-1; continue; } - - // apply mask on first byte - c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07; - // join the rest - while (c_len > 1 && i < len) { - c = (c << 6) | (buf[i++] & 0x3f); - c_len--; - } - - // terminated by end of string? - if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; } - - if (c < 0x10000) { - utf16buf[out++] = c; - } else { - c -= 0x10000; - utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff); - utf16buf[out++] = 0xdc00 | (c & 0x3ff); - } - } - - return buf2binstring(utf16buf, out); -}; - - -// Calculate max possible position in utf8 buffer, -// that will not break sequence. If that's not possible -// - (very small limits) return max size as is. -// -// buf[] - utf8 bytes array -// max - length limit (mandatory); -exports.utf8border = function(buf, max) { - var pos; - - max = max || buf.length; - if (max > buf.length) { max = buf.length; } - - // go back from last position, until start of sequence found - pos = max-1; - while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; } - - // Fuckup - very small and broken sequence, - // return max, because we should return something anyway. - if (pos < 0) { return max; } - - // If we came to start of buffer - that means vuffer is too small, - // return max too. - if (pos === 0) { return max; } - - return (pos + _utf8len[buf[pos]] > max) ? pos : max; -}; - -},{"./common":2}],4:[function(_dereq_,module,exports){ -'use strict'; - -// Note: adler32 takes 12% for level 0 and 2% for level 6. -// It doesn't worth to make additional optimizationa as in original. -// Small size is preferable. - -function adler32(adler, buf, len, pos) { - var s1 = (adler & 0xffff) |0 - , s2 = ((adler >>> 16) & 0xffff) |0 - , n = 0; - - while (len !== 0) { - // Set limit ~ twice less than 5552, to keep - // s2 in 31-bits, because we force signed ints. - // in other case %= will fail. - n = len > 2000 ? 2000 : len; - len -= n; - - do { - s1 = (s1 + buf[pos++]) |0; - s2 = (s2 + s1) |0; - } while (--n); - - s1 %= 65521; - s2 %= 65521; - } - - return (s1 | (s2 << 16)) |0; -} - - -module.exports = adler32; -},{}],5:[function(_dereq_,module,exports){ -'use strict'; - -// Note: we can't get significant speed boost here. -// So write code to minimize size - no pregenerated tables -// and array tools dependencies. - - -// Use ordinary array, since untyped makes no boost here -function makeTable() { - var c, table = []; - - for(var n =0; n < 256; n++){ - c = n; - for(var k =0; k < 8; k++){ - c = ((c&1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1)); - } - table[n] = c; - } - - return table; -} - -// Create table on load. Just 255 signed longs. Not a problem. -var crcTable = makeTable(); - - -function crc32(crc, buf, len, pos) { - var t = crcTable - , end = pos + len; - - crc = crc ^ (-1); - - for (var i = pos; i < end; i++ ) { - crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF]; - } - - return (crc ^ (-1)); // >>> 0; -} - - -module.exports = crc32; -},{}],6:[function(_dereq_,module,exports){ -'use strict'; - -var utils = _dereq_('../utils/common'); -var trees = _dereq_('./trees'); -var adler32 = _dereq_('./adler32'); -var crc32 = _dereq_('./crc32'); -var msg = _dereq_('./messages'); - -/* Public constants ==========================================================*/ -/* ===========================================================================*/ - - -/* Allowed flush values; see deflate() and inflate() below for details */ -var Z_NO_FLUSH = 0; -var Z_PARTIAL_FLUSH = 1; -//var Z_SYNC_FLUSH = 2; -var Z_FULL_FLUSH = 3; -var Z_FINISH = 4; -var Z_BLOCK = 5; -//var Z_TREES = 6; - - -/* Return codes for the compression/decompression functions. Negative values - * are errors, positive values are used for special but normal events. - */ -var Z_OK = 0; -var Z_STREAM_END = 1; -//var Z_NEED_DICT = 2; -//var Z_ERRNO = -1; -var Z_STREAM_ERROR = -2; -var Z_DATA_ERROR = -3; -//var Z_MEM_ERROR = -4; -var Z_BUF_ERROR = -5; -//var Z_VERSION_ERROR = -6; - - -/* compression levels */ -//var Z_NO_COMPRESSION = 0; -//var Z_BEST_SPEED = 1; -//var Z_BEST_COMPRESSION = 9; -var Z_DEFAULT_COMPRESSION = -1; - - -var Z_FILTERED = 1; -var Z_HUFFMAN_ONLY = 2; -var Z_RLE = 3; -var Z_FIXED = 4; -var Z_DEFAULT_STRATEGY = 0; - -/* Possible values of the data_type field (though see inflate()) */ -//var Z_BINARY = 0; -//var Z_TEXT = 1; -//var Z_ASCII = 1; // = Z_TEXT -var Z_UNKNOWN = 2; - - -/* The deflate compression method */ -var Z_DEFLATED = 8; - -/*============================================================================*/ - - -var MAX_MEM_LEVEL = 9; -/* Maximum value for memLevel in deflateInit2 */ -var MAX_WBITS = 15; -/* 32K LZ77 window */ -var DEF_MEM_LEVEL = 8; - - -var LENGTH_CODES = 29; -/* number of length codes, not counting the special END_BLOCK code */ -var LITERALS = 256; -/* number of literal bytes 0..255 */ -var L_CODES = LITERALS + 1 + LENGTH_CODES; -/* number of Literal or Length codes, including the END_BLOCK code */ -var D_CODES = 30; -/* number of distance codes */ -var BL_CODES = 19; -/* number of codes used to transfer the bit lengths */ -var HEAP_SIZE = 2*L_CODES + 1; -/* maximum heap size */ -var MAX_BITS = 15; -/* All codes must not exceed MAX_BITS bits */ - -var MIN_MATCH = 3; -var MAX_MATCH = 258; -var MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1); - -var PRESET_DICT = 0x20; - -var INIT_STATE = 42; -var EXTRA_STATE = 69; -var NAME_STATE = 73; -var COMMENT_STATE = 91; -var HCRC_STATE = 103; -var BUSY_STATE = 113; -var FINISH_STATE = 666; - -var BS_NEED_MORE = 1; /* block not completed, need more input or more output */ -var BS_BLOCK_DONE = 2; /* block flush performed */ -var BS_FINISH_STARTED = 3; /* finish started, need only more output at next deflate */ -var BS_FINISH_DONE = 4; /* finish done, accept no more input or output */ - -var OS_CODE = 0x03; // Unix :) . Don't detect, use this default. - -function err(strm, errorCode) { - strm.msg = msg[errorCode]; - return errorCode; -} - -function rank(f) { - return ((f) << 1) - ((f) > 4 ? 9 : 0); -} - -function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } } - - -/* ========================================================================= - * Flush as much pending output as possible. All deflate() output goes - * through this function so some applications may wish to modify it - * to avoid allocating a large strm->output buffer and copying into it. - * (See also read_buf()). - */ -function flush_pending(strm) { - var s = strm.state; - - //_tr_flush_bits(s); - var len = s.pending; - if (len > strm.avail_out) { - len = strm.avail_out; - } - if (len === 0) { return; } - - utils.arraySet(strm.output, s.pending_buf, s.pending_out, len, strm.next_out); - strm.next_out += len; - s.pending_out += len; - strm.total_out += len; - strm.avail_out -= len; - s.pending -= len; - if (s.pending === 0) { - s.pending_out = 0; - } -} - - -function flush_block_only (s, last) { - trees._tr_flush_block(s, (s.block_start >= 0 ? s.block_start : -1), s.strstart - s.block_start, last); - s.block_start = s.strstart; - flush_pending(s.strm); -} - - -function put_byte(s, b) { - s.pending_buf[s.pending++] = b; -} - - -/* ========================================================================= - * Put a short in the pending buffer. The 16-bit value is put in MSB order. - * IN assertion: the stream state is correct and there is enough room in - * pending_buf. - */ -function putShortMSB(s, b) { -// put_byte(s, (Byte)(b >> 8)); -// put_byte(s, (Byte)(b & 0xff)); - s.pending_buf[s.pending++] = (b >>> 8) & 0xff; - s.pending_buf[s.pending++] = b & 0xff; -} - - -/* =========================================================================== - * Read a new buffer from the current input stream, update the adler32 - * and total number of bytes read. All deflate() input goes through - * this function so some applications may wish to modify it to avoid - * allocating a large strm->input buffer and copying from it. - * (See also flush_pending()). - */ -function read_buf(strm, buf, start, size) { - var len = strm.avail_in; - - if (len > size) { len = size; } - if (len === 0) { return 0; } - - strm.avail_in -= len; - - utils.arraySet(buf, strm.input, strm.next_in, len, start); - if (strm.state.wrap === 1) { - strm.adler = adler32(strm.adler, buf, len, start); - } - - else if (strm.state.wrap === 2) { - strm.adler = crc32(strm.adler, buf, len, start); - } - - strm.next_in += len; - strm.total_in += len; - - return len; -} - - -/* =========================================================================== - * Set match_start to the longest match starting at the given string and - * return its length. Matches shorter or equal to prev_length are discarded, - * in which case the result is equal to prev_length and match_start is - * garbage. - * IN assertions: cur_match is the head of the hash chain for the current - * string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1 - * OUT assertion: the match length is not greater than s->lookahead. - */ -function longest_match(s, cur_match) { - var chain_length = s.max_chain_length; /* max hash chain length */ - var scan = s.strstart; /* current string */ - var match; /* matched string */ - var len; /* length of current match */ - var best_len = s.prev_length; /* best match length so far */ - var nice_match = s.nice_match; /* stop if match long enough */ - var limit = (s.strstart > (s.w_size - MIN_LOOKAHEAD)) ? - s.strstart - (s.w_size - MIN_LOOKAHEAD) : 0/*NIL*/; - - var _win = s.window; // shortcut - - var wmask = s.w_mask; - var prev = s.prev; - - /* Stop when cur_match becomes <= limit. To simplify the code, - * we prevent matches with the string of window index 0. - */ - - var strend = s.strstart + MAX_MATCH; - var scan_end1 = _win[scan + best_len - 1]; - var scan_end = _win[scan + best_len]; - - /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16. - * It is easy to get rid of this optimization if necessary. - */ - // Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever"); - - /* Do not waste too much time if we already have a good match: */ - if (s.prev_length >= s.good_match) { - chain_length >>= 2; - } - /* Do not look for matches beyond the end of the input. This is necessary - * to make deflate deterministic. - */ - if (nice_match > s.lookahead) { nice_match = s.lookahead; } - - // Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead"); - - do { - // Assert(cur_match < s->strstart, "no future"); - match = cur_match; - - /* Skip to next match if the match length cannot increase - * or if the match length is less than 2. Note that the checks below - * for insufficient lookahead only occur occasionally for performance - * reasons. Therefore uninitialized memory will be accessed, and - * conditional jumps will be made that depend on those values. - * However the length of the match is limited to the lookahead, so - * the output of deflate is not affected by the uninitialized values. - */ - - if (_win[match + best_len] !== scan_end || - _win[match + best_len - 1] !== scan_end1 || - _win[match] !== _win[scan] || - _win[++match] !== _win[scan + 1]) { - continue; - } - - /* The check at best_len-1 can be removed because it will be made - * again later. (This heuristic is not always a win.) - * It is not necessary to compare scan[2] and match[2] since they - * are always equal when the other bytes match, given that - * the hash keys are equal and that HASH_BITS >= 8. - */ - scan += 2; - match++; - // Assert(*scan == *match, "match[2]?"); - - /* We check for insufficient lookahead only every 8th comparison; - * the 256th check will be made at strstart+258. - */ - do { - /*jshint noempty:false*/ - } while (_win[++scan] === _win[++match] && _win[++scan] === _win[++match] && - _win[++scan] === _win[++match] && _win[++scan] === _win[++match] && - _win[++scan] === _win[++match] && _win[++scan] === _win[++match] && - _win[++scan] === _win[++match] && _win[++scan] === _win[++match] && - scan < strend); - - // Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan"); - - len = MAX_MATCH - (strend - scan); - scan = strend - MAX_MATCH; - - if (len > best_len) { - s.match_start = cur_match; - best_len = len; - if (len >= nice_match) { - break; - } - scan_end1 = _win[scan + best_len - 1]; - scan_end = _win[scan + best_len]; - } - } while ((cur_match = prev[cur_match & wmask]) > limit && --chain_length !== 0); - - if (best_len <= s.lookahead) { - return best_len; - } - return s.lookahead; -} - - -/* =========================================================================== - * Fill the window when the lookahead becomes insufficient. - * Updates strstart and lookahead. - * - * IN assertion: lookahead < MIN_LOOKAHEAD - * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD - * At least one byte has been read, or avail_in == 0; reads are - * performed for at least two bytes (required for the zip translate_eol - * option -- not supported here). - */ -function fill_window(s) { - var _w_size = s.w_size; - var p, n, m, more, str; - - //Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead"); - - do { - more = s.window_size - s.lookahead - s.strstart; - - // JS ints have 32 bit, block below not needed - /* Deal with !@#$% 64K limit: */ - //if (sizeof(int) <= 2) { - // if (more == 0 && s->strstart == 0 && s->lookahead == 0) { - // more = wsize; - // - // } else if (more == (unsigned)(-1)) { - // /* Very unlikely, but possible on 16 bit machine if - // * strstart == 0 && lookahead == 1 (input done a byte at time) - // */ - // more--; - // } - //} - - - /* If the window is almost full and there is insufficient lookahead, - * move the upper half to the lower one to make room in the upper half. - */ - if (s.strstart >= _w_size + (_w_size - MIN_LOOKAHEAD)) { - - utils.arraySet(s.window, s.window, _w_size, _w_size, 0); - s.match_start -= _w_size; - s.strstart -= _w_size; - /* we now have strstart >= MAX_DIST */ - s.block_start -= _w_size; - - /* Slide the hash table (could be avoided with 32 bit values - at the expense of memory usage). We slide even when level == 0 - to keep the hash table consistent if we switch back to level > 0 - later. (Using level 0 permanently is not an optimal usage of - zlib, so we don't care about this pathological case.) - */ - - n = s.hash_size; - p = n; - do { - m = s.head[--p]; - s.head[p] = (m >= _w_size ? m - _w_size : 0); - } while (--n); - - n = _w_size; - p = n; - do { - m = s.prev[--p]; - s.prev[p] = (m >= _w_size ? m - _w_size : 0); - /* If n is not on any hash chain, prev[n] is garbage but - * its value will never be used. - */ - } while (--n); - - more += _w_size; - } - if (s.strm.avail_in === 0) { - break; - } - - /* If there was no sliding: - * strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 && - * more == window_size - lookahead - strstart - * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1) - * => more >= window_size - 2*WSIZE + 2 - * In the BIG_MEM or MMAP case (not yet supported), - * window_size == input_size + MIN_LOOKAHEAD && - * strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD. - * Otherwise, window_size == 2*WSIZE so more >= 2. - * If there was sliding, more >= WSIZE. So in all cases, more >= 2. - */ - //Assert(more >= 2, "more < 2"); - n = read_buf(s.strm, s.window, s.strstart + s.lookahead, more); - s.lookahead += n; - - /* Initialize the hash value now that we have some input: */ - if (s.lookahead + s.insert >= MIN_MATCH) { - str = s.strstart - s.insert; - s.ins_h = s.window[str]; - - /* UPDATE_HASH(s, s->ins_h, s->window[str + 1]); */ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + 1]) & s.hash_mask; -//#if MIN_MATCH != 3 -// Call update_hash() MIN_MATCH-3 more times -//#endif - while (s.insert) { - /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH-1]) & s.hash_mask; - - s.prev[str & s.w_mask] = s.head[s.ins_h]; - s.head[s.ins_h] = str; - str++; - s.insert--; - if (s.lookahead + s.insert < MIN_MATCH) { - break; - } - } - } - /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage, - * but this is not important since only literal bytes will be emitted. - */ - - } while (s.lookahead < MIN_LOOKAHEAD && s.strm.avail_in !== 0); - - /* If the WIN_INIT bytes after the end of the current data have never been - * written, then zero those bytes in order to avoid memory check reports of - * the use of uninitialized (or uninitialised as Julian writes) bytes by - * the longest match routines. Update the high water mark for the next - * time through here. WIN_INIT is set to MAX_MATCH since the longest match - * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead. - */ -// if (s.high_water < s.window_size) { -// var curr = s.strstart + s.lookahead; -// var init = 0; -// -// if (s.high_water < curr) { -// /* Previous high water mark below current data -- zero WIN_INIT -// * bytes or up to end of window, whichever is less. -// */ -// init = s.window_size - curr; -// if (init > WIN_INIT) -// init = WIN_INIT; -// zmemzero(s->window + curr, (unsigned)init); -// s->high_water = curr + init; -// } -// else if (s->high_water < (ulg)curr + WIN_INIT) { -// /* High water mark at or above current data, but below current data -// * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up -// * to end of window, whichever is less. -// */ -// init = (ulg)curr + WIN_INIT - s->high_water; -// if (init > s->window_size - s->high_water) -// init = s->window_size - s->high_water; -// zmemzero(s->window + s->high_water, (unsigned)init); -// s->high_water += init; -// } -// } -// -// Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD, -// "not enough room for search"); -} - -/* =========================================================================== - * Copy without compression as much as possible from the input stream, return - * the current block state. - * This function does not insert new strings in the dictionary since - * uncompressible data is probably not useful. This function is used - * only for the level=0 compression option. - * NOTE: this function should be optimized to avoid extra copying from - * window to pending_buf. - */ -function deflate_stored(s, flush) { - /* Stored blocks are limited to 0xffff bytes, pending_buf is limited - * to pending_buf_size, and each stored block has a 5 byte header: - */ - var max_block_size = 0xffff; - - if (max_block_size > s.pending_buf_size - 5) { - max_block_size = s.pending_buf_size - 5; - } - - /* Copy as much as possible from input to output: */ - for (;;) { - /* Fill the window as much as possible: */ - if (s.lookahead <= 1) { - - //Assert(s->strstart < s->w_size+MAX_DIST(s) || - // s->block_start >= (long)s->w_size, "slide too late"); -// if (!(s.strstart < s.w_size + (s.w_size - MIN_LOOKAHEAD) || -// s.block_start >= s.w_size)) { -// throw new Error("slide too late"); -// } - - fill_window(s); - if (s.lookahead === 0 && flush === Z_NO_FLUSH) { - return BS_NEED_MORE; - } - - if (s.lookahead === 0) { - break; - } - /* flush the current block */ - } - //Assert(s->block_start >= 0L, "block gone"); -// if (s.block_start < 0) throw new Error("block gone"); - - s.strstart += s.lookahead; - s.lookahead = 0; - - /* Emit a stored block if pending_buf will be full: */ - var max_start = s.block_start + max_block_size; - - if (s.strstart === 0 || s.strstart >= max_start) { - /* strstart == 0 is possible when wraparound on 16-bit machine */ - s.lookahead = s.strstart - max_start; - s.strstart = max_start; - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - - - } - /* Flush if we may have to slide, otherwise block_start may become - * negative and the data will be gone: - */ - if (s.strstart - s.block_start >= (s.w_size - MIN_LOOKAHEAD)) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - } - - s.insert = 0; - - if (flush === Z_FINISH) { - /*** FLUSH_BLOCK(s, 1); ***/ - flush_block_only(s, true); - if (s.strm.avail_out === 0) { - return BS_FINISH_STARTED; - } - /***/ - return BS_FINISH_DONE; - } - - if (s.strstart > s.block_start) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - - return BS_NEED_MORE; -} - -/* =========================================================================== - * Compress as much as possible from the input stream, return the current - * block state. - * This function does not perform lazy evaluation of matches and inserts - * new strings in the dictionary only for unmatched strings or for short - * matches. It is used only for the fast compression options. - */ -function deflate_fast(s, flush) { - var hash_head; /* head of the hash chain */ - var bflush; /* set if current block must be flushed */ - - for (;;) { - /* Make sure that we always have enough lookahead, except - * at the end of the input file. We need MAX_MATCH bytes - * for the next match, plus MIN_MATCH bytes to insert the - * string following the next match. - */ - if (s.lookahead < MIN_LOOKAHEAD) { - fill_window(s); - if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) { - return BS_NEED_MORE; - } - if (s.lookahead === 0) { - break; /* flush the current block */ - } - } - - /* Insert the string window[strstart .. strstart+2] in the - * dictionary, and set hash_head to the head of the hash chain: - */ - hash_head = 0/*NIL*/; - if (s.lookahead >= MIN_MATCH) { - /*** INSERT_STRING(s, s.strstart, hash_head); ***/ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask; - hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h]; - s.head[s.ins_h] = s.strstart; - /***/ - } - - /* Find the longest match, discarding those <= prev_length. - * At this point we have always match_length < MIN_MATCH - */ - if (hash_head !== 0/*NIL*/ && ((s.strstart - hash_head) <= (s.w_size - MIN_LOOKAHEAD))) { - /* To simplify the code, we prevent matches with the string - * of window index 0 (in particular we have to avoid a match - * of the string with itself at the start of the input file). - */ - s.match_length = longest_match(s, hash_head); - /* longest_match() sets match_start */ - } - if (s.match_length >= MIN_MATCH) { - // check_match(s, s.strstart, s.match_start, s.match_length); // for debug only - - /*** _tr_tally_dist(s, s.strstart - s.match_start, - s.match_length - MIN_MATCH, bflush); ***/ - bflush = trees._tr_tally(s, s.strstart - s.match_start, s.match_length - MIN_MATCH); - - s.lookahead -= s.match_length; - - /* Insert new strings in the hash table only if the match length - * is not too large. This saves time but degrades compression. - */ - if (s.match_length <= s.max_lazy_match/*max_insert_length*/ && s.lookahead >= MIN_MATCH) { - s.match_length--; /* string at strstart already in table */ - do { - s.strstart++; - /*** INSERT_STRING(s, s.strstart, hash_head); ***/ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask; - hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h]; - s.head[s.ins_h] = s.strstart; - /***/ - /* strstart never exceeds WSIZE-MAX_MATCH, so there are - * always MIN_MATCH bytes ahead. - */ - } while (--s.match_length !== 0); - s.strstart++; - } else - { - s.strstart += s.match_length; - s.match_length = 0; - s.ins_h = s.window[s.strstart]; - /* UPDATE_HASH(s, s.ins_h, s.window[s.strstart+1]); */ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + 1]) & s.hash_mask; - -//#if MIN_MATCH != 3 -// Call UPDATE_HASH() MIN_MATCH-3 more times -//#endif - /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not - * matter since it will be recomputed at next deflate call. - */ - } - } else { - /* No match, output a literal byte */ - //Tracevv((stderr,"%c", s.window[s.strstart])); - /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/ - bflush = trees._tr_tally(s, 0, s.window[s.strstart]); - - s.lookahead--; - s.strstart++; - } - if (bflush) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - } - s.insert = ((s.strstart < (MIN_MATCH-1)) ? s.strstart : MIN_MATCH-1); - if (flush === Z_FINISH) { - /*** FLUSH_BLOCK(s, 1); ***/ - flush_block_only(s, true); - if (s.strm.avail_out === 0) { - return BS_FINISH_STARTED; - } - /***/ - return BS_FINISH_DONE; - } - if (s.last_lit) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - return BS_BLOCK_DONE; -} - -/* =========================================================================== - * Same as above, but achieves better compression. We use a lazy - * evaluation for matches: a match is finally adopted only if there is - * no better match at the next window position. - */ -function deflate_slow(s, flush) { - var hash_head; /* head of hash chain */ - var bflush; /* set if current block must be flushed */ - - var max_insert; - - /* Process the input block. */ - for (;;) { - /* Make sure that we always have enough lookahead, except - * at the end of the input file. We need MAX_MATCH bytes - * for the next match, plus MIN_MATCH bytes to insert the - * string following the next match. - */ - if (s.lookahead < MIN_LOOKAHEAD) { - fill_window(s); - if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) { - return BS_NEED_MORE; - } - if (s.lookahead === 0) { break; } /* flush the current block */ - } - - /* Insert the string window[strstart .. strstart+2] in the - * dictionary, and set hash_head to the head of the hash chain: - */ - hash_head = 0/*NIL*/; - if (s.lookahead >= MIN_MATCH) { - /*** INSERT_STRING(s, s.strstart, hash_head); ***/ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask; - hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h]; - s.head[s.ins_h] = s.strstart; - /***/ - } - - /* Find the longest match, discarding those <= prev_length. - */ - s.prev_length = s.match_length; - s.prev_match = s.match_start; - s.match_length = MIN_MATCH-1; - - if (hash_head !== 0/*NIL*/ && s.prev_length < s.max_lazy_match && - s.strstart - hash_head <= (s.w_size-MIN_LOOKAHEAD)/*MAX_DIST(s)*/) { - /* To simplify the code, we prevent matches with the string - * of window index 0 (in particular we have to avoid a match - * of the string with itself at the start of the input file). - */ - s.match_length = longest_match(s, hash_head); - /* longest_match() sets match_start */ - - if (s.match_length <= 5 && - (s.strategy === Z_FILTERED || (s.match_length === MIN_MATCH && s.strstart - s.match_start > 4096/*TOO_FAR*/))) { - - /* If prev_match is also MIN_MATCH, match_start is garbage - * but we will ignore the current match anyway. - */ - s.match_length = MIN_MATCH-1; - } - } - /* If there was a match at the previous step and the current - * match is not better, output the previous match: - */ - if (s.prev_length >= MIN_MATCH && s.match_length <= s.prev_length) { - max_insert = s.strstart + s.lookahead - MIN_MATCH; - /* Do not insert strings in hash table beyond this. */ - - //check_match(s, s.strstart-1, s.prev_match, s.prev_length); - - /***_tr_tally_dist(s, s.strstart - 1 - s.prev_match, - s.prev_length - MIN_MATCH, bflush);***/ - bflush = trees._tr_tally(s, s.strstart - 1- s.prev_match, s.prev_length - MIN_MATCH); - /* Insert in hash table all strings up to the end of the match. - * strstart-1 and strstart are already inserted. If there is not - * enough lookahead, the last two strings are not inserted in - * the hash table. - */ - s.lookahead -= s.prev_length-1; - s.prev_length -= 2; - do { - if (++s.strstart <= max_insert) { - /*** INSERT_STRING(s, s.strstart, hash_head); ***/ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask; - hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h]; - s.head[s.ins_h] = s.strstart; - /***/ - } - } while (--s.prev_length !== 0); - s.match_available = 0; - s.match_length = MIN_MATCH-1; - s.strstart++; - - if (bflush) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - - } else if (s.match_available) { - /* If there was no match at the previous position, output a - * single literal. If there was a match but the current match - * is longer, truncate the previous match to a single literal. - */ - //Tracevv((stderr,"%c", s->window[s->strstart-1])); - /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/ - bflush = trees._tr_tally(s, 0, s.window[s.strstart-1]); - - if (bflush) { - /*** FLUSH_BLOCK_ONLY(s, 0) ***/ - flush_block_only(s, false); - /***/ - } - s.strstart++; - s.lookahead--; - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - } else { - /* There is no previous match to compare with, wait for - * the next step to decide. - */ - s.match_available = 1; - s.strstart++; - s.lookahead--; - } - } - //Assert (flush != Z_NO_FLUSH, "no flush?"); - if (s.match_available) { - //Tracevv((stderr,"%c", s->window[s->strstart-1])); - /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/ - bflush = trees._tr_tally(s, 0, s.window[s.strstart-1]); - - s.match_available = 0; - } - s.insert = s.strstart < MIN_MATCH-1 ? s.strstart : MIN_MATCH-1; - if (flush === Z_FINISH) { - /*** FLUSH_BLOCK(s, 1); ***/ - flush_block_only(s, true); - if (s.strm.avail_out === 0) { - return BS_FINISH_STARTED; - } - /***/ - return BS_FINISH_DONE; - } - if (s.last_lit) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - - return BS_BLOCK_DONE; -} - - -/* =========================================================================== - * For Z_RLE, simply look for runs of bytes, generate matches only of distance - * one. Do not maintain a hash table. (It will be regenerated if this run of - * deflate switches away from Z_RLE.) - */ -function deflate_rle(s, flush) { - var bflush; /* set if current block must be flushed */ - var prev; /* byte at distance one to match */ - var scan, strend; /* scan goes up to strend for length of run */ - - var _win = s.window; - - for (;;) { - /* Make sure that we always have enough lookahead, except - * at the end of the input file. We need MAX_MATCH bytes - * for the longest run, plus one for the unrolled loop. - */ - if (s.lookahead <= MAX_MATCH) { - fill_window(s); - if (s.lookahead <= MAX_MATCH && flush === Z_NO_FLUSH) { - return BS_NEED_MORE; - } - if (s.lookahead === 0) { break; } /* flush the current block */ - } - - /* See how many times the previous byte repeats */ - s.match_length = 0; - if (s.lookahead >= MIN_MATCH && s.strstart > 0) { - scan = s.strstart - 1; - prev = _win[scan]; - if (prev === _win[++scan] && prev === _win[++scan] && prev === _win[++scan]) { - strend = s.strstart + MAX_MATCH; - do { - /*jshint noempty:false*/ - } while (prev === _win[++scan] && prev === _win[++scan] && - prev === _win[++scan] && prev === _win[++scan] && - prev === _win[++scan] && prev === _win[++scan] && - prev === _win[++scan] && prev === _win[++scan] && - scan < strend); - s.match_length = MAX_MATCH - (strend - scan); - if (s.match_length > s.lookahead) { - s.match_length = s.lookahead; - } - } - //Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan"); - } - - /* Emit match if have run of MIN_MATCH or longer, else emit literal */ - if (s.match_length >= MIN_MATCH) { - //check_match(s, s.strstart, s.strstart - 1, s.match_length); - - /*** _tr_tally_dist(s, 1, s.match_length - MIN_MATCH, bflush); ***/ - bflush = trees._tr_tally(s, 1, s.match_length - MIN_MATCH); - - s.lookahead -= s.match_length; - s.strstart += s.match_length; - s.match_length = 0; - } else { - /* No match, output a literal byte */ - //Tracevv((stderr,"%c", s->window[s->strstart])); - /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/ - bflush = trees._tr_tally(s, 0, s.window[s.strstart]); - - s.lookahead--; - s.strstart++; - } - if (bflush) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - } - s.insert = 0; - if (flush === Z_FINISH) { - /*** FLUSH_BLOCK(s, 1); ***/ - flush_block_only(s, true); - if (s.strm.avail_out === 0) { - return BS_FINISH_STARTED; - } - /***/ - return BS_FINISH_DONE; - } - if (s.last_lit) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - return BS_BLOCK_DONE; -} - -/* =========================================================================== - * For Z_HUFFMAN_ONLY, do not look for matches. Do not maintain a hash table. - * (It will be regenerated if this run of deflate switches away from Huffman.) - */ -function deflate_huff(s, flush) { - var bflush; /* set if current block must be flushed */ - - for (;;) { - /* Make sure that we have a literal to write. */ - if (s.lookahead === 0) { - fill_window(s); - if (s.lookahead === 0) { - if (flush === Z_NO_FLUSH) { - return BS_NEED_MORE; - } - break; /* flush the current block */ - } - } - - /* Output a literal byte */ - s.match_length = 0; - //Tracevv((stderr,"%c", s->window[s->strstart])); - /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/ - bflush = trees._tr_tally(s, 0, s.window[s.strstart]); - s.lookahead--; - s.strstart++; - if (bflush) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - } - s.insert = 0; - if (flush === Z_FINISH) { - /*** FLUSH_BLOCK(s, 1); ***/ - flush_block_only(s, true); - if (s.strm.avail_out === 0) { - return BS_FINISH_STARTED; - } - /***/ - return BS_FINISH_DONE; - } - if (s.last_lit) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - return BS_BLOCK_DONE; -} - -/* Values for max_lazy_match, good_match and max_chain_length, depending on - * the desired pack level (0..9). The values given below have been tuned to - * exclude worst case performance for pathological files. Better values may be - * found for specific files. - */ -var Config = function (good_length, max_lazy, nice_length, max_chain, func) { - this.good_length = good_length; - this.max_lazy = max_lazy; - this.nice_length = nice_length; - this.max_chain = max_chain; - this.func = func; -}; - -var configuration_table; - -configuration_table = [ - /* good lazy nice chain */ - new Config(0, 0, 0, 0, deflate_stored), /* 0 store only */ - new Config(4, 4, 8, 4, deflate_fast), /* 1 max speed, no lazy matches */ - new Config(4, 5, 16, 8, deflate_fast), /* 2 */ - new Config(4, 6, 32, 32, deflate_fast), /* 3 */ - - new Config(4, 4, 16, 16, deflate_slow), /* 4 lazy matches */ - new Config(8, 16, 32, 32, deflate_slow), /* 5 */ - new Config(8, 16, 128, 128, deflate_slow), /* 6 */ - new Config(8, 32, 128, 256, deflate_slow), /* 7 */ - new Config(32, 128, 258, 1024, deflate_slow), /* 8 */ - new Config(32, 258, 258, 4096, deflate_slow) /* 9 max compression */ -]; - - -/* =========================================================================== - * Initialize the "longest match" routines for a new zlib stream - */ -function lm_init(s) { - s.window_size = 2 * s.w_size; - - /*** CLEAR_HASH(s); ***/ - zero(s.head); // Fill with NIL (= 0); - - /* Set the default configuration parameters: - */ - s.max_lazy_match = configuration_table[s.level].max_lazy; - s.good_match = configuration_table[s.level].good_length; - s.nice_match = configuration_table[s.level].nice_length; - s.max_chain_length = configuration_table[s.level].max_chain; - - s.strstart = 0; - s.block_start = 0; - s.lookahead = 0; - s.insert = 0; - s.match_length = s.prev_length = MIN_MATCH - 1; - s.match_available = 0; - s.ins_h = 0; -} - - -function DeflateState() { - this.strm = null; /* pointer back to this zlib stream */ - this.status = 0; /* as the name implies */ - this.pending_buf = null; /* output still pending */ - this.pending_buf_size = 0; /* size of pending_buf */ - this.pending_out = 0; /* next pending byte to output to the stream */ - this.pending = 0; /* nb of bytes in the pending buffer */ - this.wrap = 0; /* bit 0 true for zlib, bit 1 true for gzip */ - this.gzhead = null; /* gzip header information to write */ - this.gzindex = 0; /* where in extra, name, or comment */ - this.method = Z_DEFLATED; /* can only be DEFLATED */ - this.last_flush = -1; /* value of flush param for previous deflate call */ - - this.w_size = 0; /* LZ77 window size (32K by default) */ - this.w_bits = 0; /* log2(w_size) (8..16) */ - this.w_mask = 0; /* w_size - 1 */ - - this.window = null; - /* Sliding window. Input bytes are read into the second half of the window, - * and move to the first half later to keep a dictionary of at least wSize - * bytes. With this organization, matches are limited to a distance of - * wSize-MAX_MATCH bytes, but this ensures that IO is always - * performed with a length multiple of the block size. - */ - - this.window_size = 0; - /* Actual size of window: 2*wSize, except when the user input buffer - * is directly used as sliding window. - */ - - this.prev = null; - /* Link to older string with same hash index. To limit the size of this - * array to 64K, this link is maintained only for the last 32K strings. - * An index in this array is thus a window index modulo 32K. - */ - - this.head = null; /* Heads of the hash chains or NIL. */ - - this.ins_h = 0; /* hash index of string to be inserted */ - this.hash_size = 0; /* number of elements in hash table */ - this.hash_bits = 0; /* log2(hash_size) */ - this.hash_mask = 0; /* hash_size-1 */ - - this.hash_shift = 0; - /* Number of bits by which ins_h must be shifted at each input - * step. It must be such that after MIN_MATCH steps, the oldest - * byte no longer takes part in the hash key, that is: - * hash_shift * MIN_MATCH >= hash_bits - */ - - this.block_start = 0; - /* Window position at the beginning of the current output block. Gets - * negative when the window is moved backwards. - */ - - this.match_length = 0; /* length of best match */ - this.prev_match = 0; /* previous match */ - this.match_available = 0; /* set if previous match exists */ - this.strstart = 0; /* start of string to insert */ - this.match_start = 0; /* start of matching string */ - this.lookahead = 0; /* number of valid bytes ahead in window */ - - this.prev_length = 0; - /* Length of the best match at previous step. Matches not greater than this - * are discarded. This is used in the lazy match evaluation. - */ - - this.max_chain_length = 0; - /* To speed up deflation, hash chains are never searched beyond this - * length. A higher limit improves compression ratio but degrades the - * speed. - */ - - this.max_lazy_match = 0; - /* Attempt to find a better match only when the current match is strictly - * smaller than this value. This mechanism is used only for compression - * levels >= 4. - */ - // That's alias to max_lazy_match, don't use directly - //this.max_insert_length = 0; - /* Insert new strings in the hash table only if the match length is not - * greater than this length. This saves time but degrades compression. - * max_insert_length is used only for compression levels <= 3. - */ - - this.level = 0; /* compression level (1..9) */ - this.strategy = 0; /* favor or force Huffman coding*/ - - this.good_match = 0; - /* Use a faster search when the previous match is longer than this */ - - this.nice_match = 0; /* Stop searching when current match exceeds this */ - - /* used by trees.c: */ - - /* Didn't use ct_data typedef below to suppress compiler warning */ - - // struct ct_data_s dyn_ltree[HEAP_SIZE]; /* literal and length tree */ - // struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */ - // struct ct_data_s bl_tree[2*BL_CODES+1]; /* Huffman tree for bit lengths */ - - // Use flat array of DOUBLE size, with interleaved fata, - // because JS does not support effective - this.dyn_ltree = new utils.Buf16(HEAP_SIZE * 2); - this.dyn_dtree = new utils.Buf16((2*D_CODES+1) * 2); - this.bl_tree = new utils.Buf16((2*BL_CODES+1) * 2); - zero(this.dyn_ltree); - zero(this.dyn_dtree); - zero(this.bl_tree); - - this.l_desc = null; /* desc. for literal tree */ - this.d_desc = null; /* desc. for distance tree */ - this.bl_desc = null; /* desc. for bit length tree */ - - //ush bl_count[MAX_BITS+1]; - this.bl_count = new utils.Buf16(MAX_BITS+1); - /* number of codes at each bit length for an optimal tree */ - - //int heap[2*L_CODES+1]; /* heap used to build the Huffman trees */ - this.heap = new utils.Buf16(2*L_CODES+1); /* heap used to build the Huffman trees */ - zero(this.heap); - - this.heap_len = 0; /* number of elements in the heap */ - this.heap_max = 0; /* element of largest frequency */ - /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used. - * The same heap array is used to build all trees. - */ - - this.depth = new utils.Buf16(2*L_CODES+1); //uch depth[2*L_CODES+1]; - zero(this.depth); - /* Depth of each subtree used as tie breaker for trees of equal frequency - */ - - this.l_buf = 0; /* buffer index for literals or lengths */ - - this.lit_bufsize = 0; - /* Size of match buffer for literals/lengths. There are 4 reasons for - * limiting lit_bufsize to 64K: - * - frequencies can be kept in 16 bit counters - * - if compression is not successful for the first block, all input - * data is still in the window so we can still emit a stored block even - * when input comes from standard input. (This can also be done for - * all blocks if lit_bufsize is not greater than 32K.) - * - if compression is not successful for a file smaller than 64K, we can - * even emit a stored file instead of a stored block (saving 5 bytes). - * This is applicable only for zip (not gzip or zlib). - * - creating new Huffman trees less frequently may not provide fast - * adaptation to changes in the input data statistics. (Take for - * example a binary file with poorly compressible code followed by - * a highly compressible string table.) Smaller buffer sizes give - * fast adaptation but have of course the overhead of transmitting - * trees more frequently. - * - I can't count above 4 - */ - - this.last_lit = 0; /* running index in l_buf */ - - this.d_buf = 0; - /* Buffer index for distances. To simplify the code, d_buf and l_buf have - * the same number of elements. To use different lengths, an extra flag - * array would be necessary. - */ - - this.opt_len = 0; /* bit length of current block with optimal trees */ - this.static_len = 0; /* bit length of current block with static trees */ - this.matches = 0; /* number of string matches in current block */ - this.insert = 0; /* bytes at end of window left to insert */ - - - this.bi_buf = 0; - /* Output buffer. bits are inserted starting at the bottom (least - * significant bits). - */ - this.bi_valid = 0; - /* Number of valid bits in bi_buf. All bits above the last valid bit - * are always zero. - */ - - // Used for window memory init. We safely ignore it for JS. That makes - // sense only for pointers and memory check tools. - //this.high_water = 0; - /* High water mark offset in window for initialized bytes -- bytes above - * this are set to zero in order to avoid memory check warnings when - * longest match routines access bytes past the input. This is then - * updated to the new high water mark. - */ -} - - -function deflateResetKeep(strm) { - var s; - - if (!strm || !strm.state) { - return err(strm, Z_STREAM_ERROR); - } - - strm.total_in = strm.total_out = 0; - strm.data_type = Z_UNKNOWN; - - s = strm.state; - s.pending = 0; - s.pending_out = 0; - - if (s.wrap < 0) { - s.wrap = -s.wrap; - /* was made negative by deflate(..., Z_FINISH); */ - } - s.status = (s.wrap ? INIT_STATE : BUSY_STATE); - strm.adler = (s.wrap === 2) ? - 0 // crc32(0, Z_NULL, 0) - : - 1; // adler32(0, Z_NULL, 0) - s.last_flush = Z_NO_FLUSH; - trees._tr_init(s); - return Z_OK; -} - - -function deflateReset(strm) { - var ret = deflateResetKeep(strm); - if (ret === Z_OK) { - lm_init(strm.state); - } - return ret; -} - - -function deflateSetHeader(strm, head) { - if (!strm || !strm.state) { return Z_STREAM_ERROR; } - if (strm.state.wrap !== 2) { return Z_STREAM_ERROR; } - strm.state.gzhead = head; - return Z_OK; -} - - -function deflateInit2(strm, level, method, windowBits, memLevel, strategy) { - if (!strm) { // === Z_NULL - return Z_STREAM_ERROR; - } - var wrap = 1; - - if (level === Z_DEFAULT_COMPRESSION) { - level = 6; - } - - if (windowBits < 0) { /* suppress zlib wrapper */ - wrap = 0; - windowBits = -windowBits; - } - - else if (windowBits > 15) { - wrap = 2; /* write gzip wrapper instead */ - windowBits -= 16; - } - - - if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method !== Z_DEFLATED || - windowBits < 8 || windowBits > 15 || level < 0 || level > 9 || - strategy < 0 || strategy > Z_FIXED) { - return err(strm, Z_STREAM_ERROR); - } - - - if (windowBits === 8) { - windowBits = 9; - } - /* until 256-byte window bug fixed */ - - var s = new DeflateState(); - - strm.state = s; - s.strm = strm; - - s.wrap = wrap; - s.gzhead = null; - s.w_bits = windowBits; - s.w_size = 1 << s.w_bits; - s.w_mask = s.w_size - 1; - - s.hash_bits = memLevel + 7; - s.hash_size = 1 << s.hash_bits; - s.hash_mask = s.hash_size - 1; - s.hash_shift = ~~((s.hash_bits + MIN_MATCH - 1) / MIN_MATCH); - - s.window = new utils.Buf8(s.w_size * 2); - s.head = new utils.Buf16(s.hash_size); - s.prev = new utils.Buf16(s.w_size); - - // Don't need mem init magic for JS. - //s.high_water = 0; /* nothing written to s->window yet */ - - s.lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */ - - s.pending_buf_size = s.lit_bufsize * 4; - s.pending_buf = new utils.Buf8(s.pending_buf_size); - - s.d_buf = s.lit_bufsize >> 1; - s.l_buf = (1 + 2) * s.lit_bufsize; - - s.level = level; - s.strategy = strategy; - s.method = method; - - return deflateReset(strm); -} - -function deflateInit(strm, level) { - return deflateInit2(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY); -} - - -function deflate(strm, flush) { - var old_flush, s; - var beg, val; // for gzip header write only - - if (!strm || !strm.state || - flush > Z_BLOCK || flush < 0) { - return strm ? err(strm, Z_STREAM_ERROR) : Z_STREAM_ERROR; - } - - s = strm.state; - - if (!strm.output || - (!strm.input && strm.avail_in !== 0) || - (s.status === FINISH_STATE && flush !== Z_FINISH)) { - return err(strm, (strm.avail_out === 0) ? Z_BUF_ERROR : Z_STREAM_ERROR); - } - - s.strm = strm; /* just in case */ - old_flush = s.last_flush; - s.last_flush = flush; - - /* Write the header */ - if (s.status === INIT_STATE) { - - if (s.wrap === 2) { // GZIP header - strm.adler = 0; //crc32(0L, Z_NULL, 0); - put_byte(s, 31); - put_byte(s, 139); - put_byte(s, 8); - if (!s.gzhead) { // s->gzhead == Z_NULL - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, s.level === 9 ? 2 : - (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ? - 4 : 0)); - put_byte(s, OS_CODE); - s.status = BUSY_STATE; - } - else { - put_byte(s, (s.gzhead.text ? 1 : 0) + - (s.gzhead.hcrc ? 2 : 0) + - (!s.gzhead.extra ? 0 : 4) + - (!s.gzhead.name ? 0 : 8) + - (!s.gzhead.comment ? 0 : 16) - ); - put_byte(s, s.gzhead.time & 0xff); - put_byte(s, (s.gzhead.time >> 8) & 0xff); - put_byte(s, (s.gzhead.time >> 16) & 0xff); - put_byte(s, (s.gzhead.time >> 24) & 0xff); - put_byte(s, s.level === 9 ? 2 : - (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ? - 4 : 0)); - put_byte(s, s.gzhead.os & 0xff); - if (s.gzhead.extra && s.gzhead.extra.length) { - put_byte(s, s.gzhead.extra.length & 0xff); - put_byte(s, (s.gzhead.extra.length >> 8) & 0xff); - } - if (s.gzhead.hcrc) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending, 0); - } - s.gzindex = 0; - s.status = EXTRA_STATE; - } - } - else // DEFLATE header - { - var header = (Z_DEFLATED + ((s.w_bits - 8) << 4)) << 8; - var level_flags = -1; - - if (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2) { - level_flags = 0; - } else if (s.level < 6) { - level_flags = 1; - } else if (s.level === 6) { - level_flags = 2; - } else { - level_flags = 3; - } - header |= (level_flags << 6); - if (s.strstart !== 0) { header |= PRESET_DICT; } - header += 31 - (header % 31); - - s.status = BUSY_STATE; - putShortMSB(s, header); - - /* Save the adler32 of the preset dictionary: */ - if (s.strstart !== 0) { - putShortMSB(s, strm.adler >>> 16); - putShortMSB(s, strm.adler & 0xffff); - } - strm.adler = 1; // adler32(0L, Z_NULL, 0); - } - } - -//#ifdef GZIP - if (s.status === EXTRA_STATE) { - if (s.gzhead.extra/* != Z_NULL*/) { - beg = s.pending; /* start of bytes to update crc */ - - while (s.gzindex < (s.gzhead.extra.length & 0xffff)) { - if (s.pending === s.pending_buf_size) { - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - flush_pending(strm); - beg = s.pending; - if (s.pending === s.pending_buf_size) { - break; - } - } - put_byte(s, s.gzhead.extra[s.gzindex] & 0xff); - s.gzindex++; - } - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - if (s.gzindex === s.gzhead.extra.length) { - s.gzindex = 0; - s.status = NAME_STATE; - } - } - else { - s.status = NAME_STATE; - } - } - if (s.status === NAME_STATE) { - if (s.gzhead.name/* != Z_NULL*/) { - beg = s.pending; /* start of bytes to update crc */ - //int val; - - do { - if (s.pending === s.pending_buf_size) { - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - flush_pending(strm); - beg = s.pending; - if (s.pending === s.pending_buf_size) { - val = 1; - break; - } - } - // JS specific: little magic to add zero terminator to end of string - if (s.gzindex < s.gzhead.name.length) { - val = s.gzhead.name.charCodeAt(s.gzindex++) & 0xff; - } else { - val = 0; - } - put_byte(s, val); - } while (val !== 0); - - if (s.gzhead.hcrc && s.pending > beg){ - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - if (val === 0) { - s.gzindex = 0; - s.status = COMMENT_STATE; - } - } - else { - s.status = COMMENT_STATE; - } - } - if (s.status === COMMENT_STATE) { - if (s.gzhead.comment/* != Z_NULL*/) { - beg = s.pending; /* start of bytes to update crc */ - //int val; - - do { - if (s.pending === s.pending_buf_size) { - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - flush_pending(strm); - beg = s.pending; - if (s.pending === s.pending_buf_size) { - val = 1; - break; - } - } - // JS specific: little magic to add zero terminator to end of string - if (s.gzindex < s.gzhead.comment.length) { - val = s.gzhead.comment.charCodeAt(s.gzindex++) & 0xff; - } else { - val = 0; - } - put_byte(s, val); - } while (val !== 0); - - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - if (val === 0) { - s.status = HCRC_STATE; - } - } - else { - s.status = HCRC_STATE; - } - } - if (s.status === HCRC_STATE) { - if (s.gzhead.hcrc) { - if (s.pending + 2 > s.pending_buf_size) { - flush_pending(strm); - } - if (s.pending + 2 <= s.pending_buf_size) { - put_byte(s, strm.adler & 0xff); - put_byte(s, (strm.adler >> 8) & 0xff); - strm.adler = 0; //crc32(0L, Z_NULL, 0); - s.status = BUSY_STATE; - } - } - else { - s.status = BUSY_STATE; - } - } -//#endif - - /* Flush as much pending output as possible */ - if (s.pending !== 0) { - flush_pending(strm); - if (strm.avail_out === 0) { - /* Since avail_out is 0, deflate will be called again with - * more output space, but possibly with both pending and - * avail_in equal to zero. There won't be anything to do, - * but this is not an error situation so make sure we - * return OK instead of BUF_ERROR at next call of deflate: - */ - s.last_flush = -1; - return Z_OK; - } - - /* Make sure there is something to do and avoid duplicate consecutive - * flushes. For repeated and useless calls with Z_FINISH, we keep - * returning Z_STREAM_END instead of Z_BUF_ERROR. - */ - } else if (strm.avail_in === 0 && rank(flush) <= rank(old_flush) && - flush !== Z_FINISH) { - return err(strm, Z_BUF_ERROR); - } - - /* User must not provide more input after the first FINISH: */ - if (s.status === FINISH_STATE && strm.avail_in !== 0) { - return err(strm, Z_BUF_ERROR); - } - - /* Start a new block or continue the current one. - */ - if (strm.avail_in !== 0 || s.lookahead !== 0 || - (flush !== Z_NO_FLUSH && s.status !== FINISH_STATE)) { - var bstate = (s.strategy === Z_HUFFMAN_ONLY) ? deflate_huff(s, flush) : - (s.strategy === Z_RLE ? deflate_rle(s, flush) : - configuration_table[s.level].func(s, flush)); - - if (bstate === BS_FINISH_STARTED || bstate === BS_FINISH_DONE) { - s.status = FINISH_STATE; - } - if (bstate === BS_NEED_MORE || bstate === BS_FINISH_STARTED) { - if (strm.avail_out === 0) { - s.last_flush = -1; - /* avoid BUF_ERROR next call, see above */ - } - return Z_OK; - /* If flush != Z_NO_FLUSH && avail_out == 0, the next call - * of deflate should use the same flush parameter to make sure - * that the flush is complete. So we don't have to output an - * empty block here, this will be done at next call. This also - * ensures that for a very small output buffer, we emit at most - * one empty block. - */ - } - if (bstate === BS_BLOCK_DONE) { - if (flush === Z_PARTIAL_FLUSH) { - trees._tr_align(s); - } - else if (flush !== Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */ - - trees._tr_stored_block(s, 0, 0, false); - /* For a full flush, this empty block will be recognized - * as a special marker by inflate_sync(). - */ - if (flush === Z_FULL_FLUSH) { - /*** CLEAR_HASH(s); ***/ /* forget history */ - zero(s.head); // Fill with NIL (= 0); - - if (s.lookahead === 0) { - s.strstart = 0; - s.block_start = 0; - s.insert = 0; - } - } - } - flush_pending(strm); - if (strm.avail_out === 0) { - s.last_flush = -1; /* avoid BUF_ERROR at next call, see above */ - return Z_OK; - } - } - } - //Assert(strm->avail_out > 0, "bug2"); - //if (strm.avail_out <= 0) { throw new Error("bug2");} - - if (flush !== Z_FINISH) { return Z_OK; } - if (s.wrap <= 0) { return Z_STREAM_END; } - - /* Write the trailer */ - if (s.wrap === 2) { - put_byte(s, strm.adler & 0xff); - put_byte(s, (strm.adler >> 8) & 0xff); - put_byte(s, (strm.adler >> 16) & 0xff); - put_byte(s, (strm.adler >> 24) & 0xff); - put_byte(s, strm.total_in & 0xff); - put_byte(s, (strm.total_in >> 8) & 0xff); - put_byte(s, (strm.total_in >> 16) & 0xff); - put_byte(s, (strm.total_in >> 24) & 0xff); - } - else - { - putShortMSB(s, strm.adler >>> 16); - putShortMSB(s, strm.adler & 0xffff); - } - - flush_pending(strm); - /* If avail_out is zero, the application will call deflate again - * to flush the rest. - */ - if (s.wrap > 0) { s.wrap = -s.wrap; } - /* write the trailer only once! */ - return s.pending !== 0 ? Z_OK : Z_STREAM_END; -} - -function deflateEnd(strm) { - var status; - - if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) { - return Z_STREAM_ERROR; - } - - status = strm.state.status; - if (status !== INIT_STATE && - status !== EXTRA_STATE && - status !== NAME_STATE && - status !== COMMENT_STATE && - status !== HCRC_STATE && - status !== BUSY_STATE && - status !== FINISH_STATE - ) { - return err(strm, Z_STREAM_ERROR); - } - - strm.state = null; - - return status === BUSY_STATE ? err(strm, Z_DATA_ERROR) : Z_OK; -} - -/* ========================================================================= - * Copy the source state to the destination state - */ -//function deflateCopy(dest, source) { -// -//} - -exports.deflateInit = deflateInit; -exports.deflateInit2 = deflateInit2; -exports.deflateReset = deflateReset; -exports.deflateResetKeep = deflateResetKeep; -exports.deflateSetHeader = deflateSetHeader; -exports.deflate = deflate; -exports.deflateEnd = deflateEnd; -exports.deflateInfo = 'pako deflate (from Nodeca project)'; - -/* Not implemented -exports.deflateBound = deflateBound; -exports.deflateCopy = deflateCopy; -exports.deflateSetDictionary = deflateSetDictionary; -exports.deflateParams = deflateParams; -exports.deflatePending = deflatePending; -exports.deflatePrime = deflatePrime; -exports.deflateTune = deflateTune; -*/ -},{"../utils/common":2,"./adler32":4,"./crc32":5,"./messages":7,"./trees":8}],7:[function(_dereq_,module,exports){ -'use strict'; - -module.exports = { - '2': 'need dictionary', /* Z_NEED_DICT 2 */ - '1': 'stream end', /* Z_STREAM_END 1 */ - '0': '', /* Z_OK 0 */ - '-1': 'file error', /* Z_ERRNO (-1) */ - '-2': 'stream error', /* Z_STREAM_ERROR (-2) */ - '-3': 'data error', /* Z_DATA_ERROR (-3) */ - '-4': 'insufficient memory', /* Z_MEM_ERROR (-4) */ - '-5': 'buffer error', /* Z_BUF_ERROR (-5) */ - '-6': 'incompatible version' /* Z_VERSION_ERROR (-6) */ -}; -},{}],8:[function(_dereq_,module,exports){ -'use strict'; - - -var utils = _dereq_('../utils/common'); - -/* Public constants ==========================================================*/ -/* ===========================================================================*/ - - -//var Z_FILTERED = 1; -//var Z_HUFFMAN_ONLY = 2; -//var Z_RLE = 3; -var Z_FIXED = 4; -//var Z_DEFAULT_STRATEGY = 0; - -/* Possible values of the data_type field (though see inflate()) */ -var Z_BINARY = 0; -var Z_TEXT = 1; -//var Z_ASCII = 1; // = Z_TEXT -var Z_UNKNOWN = 2; - -/*============================================================================*/ - - -function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } } - -// From zutil.h - -var STORED_BLOCK = 0; -var STATIC_TREES = 1; -var DYN_TREES = 2; -/* The three kinds of block type */ - -var MIN_MATCH = 3; -var MAX_MATCH = 258; -/* The minimum and maximum match lengths */ - -// From deflate.h -/* =========================================================================== - * Internal compression state. - */ - -var LENGTH_CODES = 29; -/* number of length codes, not counting the special END_BLOCK code */ - -var LITERALS = 256; -/* number of literal bytes 0..255 */ - -var L_CODES = LITERALS + 1 + LENGTH_CODES; -/* number of Literal or Length codes, including the END_BLOCK code */ - -var D_CODES = 30; -/* number of distance codes */ - -var BL_CODES = 19; -/* number of codes used to transfer the bit lengths */ - -var HEAP_SIZE = 2*L_CODES + 1; -/* maximum heap size */ - -var MAX_BITS = 15; -/* All codes must not exceed MAX_BITS bits */ - -var Buf_size = 16; -/* size of bit buffer in bi_buf */ - - -/* =========================================================================== - * Constants - */ - -var MAX_BL_BITS = 7; -/* Bit length codes must not exceed MAX_BL_BITS bits */ - -var END_BLOCK = 256; -/* end of block literal code */ - -var REP_3_6 = 16; -/* repeat previous bit length 3-6 times (2 bits of repeat count) */ - -var REPZ_3_10 = 17; -/* repeat a zero length 3-10 times (3 bits of repeat count) */ - -var REPZ_11_138 = 18; -/* repeat a zero length 11-138 times (7 bits of repeat count) */ - -var extra_lbits = /* extra bits for each length code */ - [0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0]; - -var extra_dbits = /* extra bits for each distance code */ - [0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13]; - -var extra_blbits = /* extra bits for each bit length code */ - [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7]; - -var bl_order = - [16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]; -/* The lengths of the bit length codes are sent in order of decreasing - * probability, to avoid transmitting the lengths for unused bit length codes. - */ - -/* =========================================================================== - * Local data. These are initialized only once. - */ - -// We pre-fill arrays with 0 to avoid uninitialized gaps - -var DIST_CODE_LEN = 512; /* see definition of array dist_code below */ - -// !!!! Use flat array insdead of structure, Freq = i*2, Len = i*2+1 -var static_ltree = new Array((L_CODES+2) * 2); -zero(static_ltree); -/* The static literal tree. Since the bit lengths are imposed, there is no - * need for the L_CODES extra codes used during heap construction. However - * The codes 286 and 287 are needed to build a canonical tree (see _tr_init - * below). - */ - -var static_dtree = new Array(D_CODES * 2); -zero(static_dtree); -/* The static distance tree. (Actually a trivial tree since all codes use - * 5 bits.) - */ - -var _dist_code = new Array(DIST_CODE_LEN); -zero(_dist_code); -/* Distance codes. The first 256 values correspond to the distances - * 3 .. 258, the last 256 values correspond to the top 8 bits of - * the 15 bit distances. - */ - -var _length_code = new Array(MAX_MATCH-MIN_MATCH+1); -zero(_length_code); -/* length code for each normalized match length (0 == MIN_MATCH) */ - -var base_length = new Array(LENGTH_CODES); -zero(base_length); -/* First normalized length for each code (0 = MIN_MATCH) */ - -var base_dist = new Array(D_CODES); -zero(base_dist); -/* First normalized distance for each code (0 = distance of 1) */ - - -var StaticTreeDesc = function (static_tree, extra_bits, extra_base, elems, max_length) { - - this.static_tree = static_tree; /* static tree or NULL */ - this.extra_bits = extra_bits; /* extra bits for each code or NULL */ - this.extra_base = extra_base; /* base index for extra_bits */ - this.elems = elems; /* max number of elements in the tree */ - this.max_length = max_length; /* max bit length for the codes */ - - // show if `static_tree` has data or dummy - needed for monomorphic objects - this.has_stree = static_tree && static_tree.length; -}; - - -var static_l_desc; -var static_d_desc; -var static_bl_desc; - - -var TreeDesc = function(dyn_tree, stat_desc) { - this.dyn_tree = dyn_tree; /* the dynamic tree */ - this.max_code = 0; /* largest code with non zero frequency */ - this.stat_desc = stat_desc; /* the corresponding static tree */ -}; - - - -function d_code(dist) { - return dist < 256 ? _dist_code[dist] : _dist_code[256 + (dist >>> 7)]; -} - - -/* =========================================================================== - * Output a short LSB first on the stream. - * IN assertion: there is enough room in pendingBuf. - */ -function put_short (s, w) { -// put_byte(s, (uch)((w) & 0xff)); -// put_byte(s, (uch)((ush)(w) >> 8)); - s.pending_buf[s.pending++] = (w) & 0xff; - s.pending_buf[s.pending++] = (w >>> 8) & 0xff; -} - - -/* =========================================================================== - * Send a value on a given number of bits. - * IN assertion: length <= 16 and value fits in length bits. - */ -function send_bits(s, value, length) { - if (s.bi_valid > (Buf_size - length)) { - s.bi_buf |= (value << s.bi_valid) & 0xffff; - put_short(s, s.bi_buf); - s.bi_buf = value >> (Buf_size - s.bi_valid); - s.bi_valid += length - Buf_size; - } else { - s.bi_buf |= (value << s.bi_valid) & 0xffff; - s.bi_valid += length; - } -} - - -function send_code(s, c, tree) { - send_bits(s, tree[c*2]/*.Code*/, tree[c*2 + 1]/*.Len*/); -} - - -/* =========================================================================== - * Reverse the first len bits of a code, using straightforward code (a faster - * method would use a table) - * IN assertion: 1 <= len <= 15 - */ -function bi_reverse(code, len) { - var res = 0; - do { - res |= code & 1; - code >>>= 1; - res <<= 1; - } while (--len > 0); - return res >>> 1; -} - - -/* =========================================================================== - * Flush the bit buffer, keeping at most 7 bits in it. - */ -function bi_flush(s) { - if (s.bi_valid === 16) { - put_short(s, s.bi_buf); - s.bi_buf = 0; - s.bi_valid = 0; - - } else if (s.bi_valid >= 8) { - s.pending_buf[s.pending++] = s.bi_buf & 0xff; - s.bi_buf >>= 8; - s.bi_valid -= 8; - } -} - - -/* =========================================================================== - * Compute the optimal bit lengths for a tree and update the total bit length - * for the current block. - * IN assertion: the fields freq and dad are set, heap[heap_max] and - * above are the tree nodes sorted by increasing frequency. - * OUT assertions: the field len is set to the optimal bit length, the - * array bl_count contains the frequencies for each bit length. - * The length opt_len is updated; static_len is also updated if stree is - * not null. - */ -function gen_bitlen(s, desc) -// deflate_state *s; -// tree_desc *desc; /* the tree descriptor */ -{ - var tree = desc.dyn_tree; - var max_code = desc.max_code; - var stree = desc.stat_desc.static_tree; - var has_stree = desc.stat_desc.has_stree; - var extra = desc.stat_desc.extra_bits; - var base = desc.stat_desc.extra_base; - var max_length = desc.stat_desc.max_length; - var h; /* heap index */ - var n, m; /* iterate over the tree elements */ - var bits; /* bit length */ - var xbits; /* extra bits */ - var f; /* frequency */ - var overflow = 0; /* number of elements with bit length too large */ - - for (bits = 0; bits <= MAX_BITS; bits++) { - s.bl_count[bits] = 0; - } - - /* In a first pass, compute the optimal bit lengths (which may - * overflow in the case of the bit length tree). - */ - tree[s.heap[s.heap_max]*2 + 1]/*.Len*/ = 0; /* root of the heap */ - - for (h = s.heap_max+1; h < HEAP_SIZE; h++) { - n = s.heap[h]; - bits = tree[tree[n*2 +1]/*.Dad*/ * 2 + 1]/*.Len*/ + 1; - if (bits > max_length) { - bits = max_length; - overflow++; - } - tree[n*2 + 1]/*.Len*/ = bits; - /* We overwrite tree[n].Dad which is no longer needed */ - - if (n > max_code) { continue; } /* not a leaf node */ - - s.bl_count[bits]++; - xbits = 0; - if (n >= base) { - xbits = extra[n-base]; - } - f = tree[n * 2]/*.Freq*/; - s.opt_len += f * (bits + xbits); - if (has_stree) { - s.static_len += f * (stree[n*2 + 1]/*.Len*/ + xbits); - } - } - if (overflow === 0) { return; } - - // Trace((stderr,"\nbit length overflow\n")); - /* This happens for example on obj2 and pic of the Calgary corpus */ - - /* Find the first bit length which could increase: */ - do { - bits = max_length-1; - while (s.bl_count[bits] === 0) { bits--; } - s.bl_count[bits]--; /* move one leaf down the tree */ - s.bl_count[bits+1] += 2; /* move one overflow item as its brother */ - s.bl_count[max_length]--; - /* The brother of the overflow item also moves one step up, - * but this does not affect bl_count[max_length] - */ - overflow -= 2; - } while (overflow > 0); - - /* Now recompute all bit lengths, scanning in increasing frequency. - * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all - * lengths instead of fixing only the wrong ones. This idea is taken - * from 'ar' written by Haruhiko Okumura.) - */ - for (bits = max_length; bits !== 0; bits--) { - n = s.bl_count[bits]; - while (n !== 0) { - m = s.heap[--h]; - if (m > max_code) { continue; } - if (tree[m*2 + 1]/*.Len*/ !== bits) { - // Trace((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits)); - s.opt_len += (bits - tree[m*2 + 1]/*.Len*/)*tree[m*2]/*.Freq*/; - tree[m*2 + 1]/*.Len*/ = bits; - } - n--; - } - } -} - - -/* =========================================================================== - * Generate the codes for a given tree and bit counts (which need not be - * optimal). - * IN assertion: the array bl_count contains the bit length statistics for - * the given tree and the field len is set for all tree elements. - * OUT assertion: the field code is set for all tree elements of non - * zero code length. - */ -function gen_codes(tree, max_code, bl_count) -// ct_data *tree; /* the tree to decorate */ -// int max_code; /* largest code with non zero frequency */ -// ushf *bl_count; /* number of codes at each bit length */ -{ - var next_code = new Array(MAX_BITS+1); /* next code value for each bit length */ - var code = 0; /* running code value */ - var bits; /* bit index */ - var n; /* code index */ - - /* The distribution counts are first used to generate the code values - * without bit reversal. - */ - for (bits = 1; bits <= MAX_BITS; bits++) { - next_code[bits] = code = (code + bl_count[bits-1]) << 1; - } - /* Check that the bit counts in bl_count are consistent. The last code - * must be all ones. - */ - //Assert (code + bl_count[MAX_BITS]-1 == (1< length code (0..28) */ - length = 0; - for (code = 0; code < LENGTH_CODES-1; code++) { - base_length[code] = length; - for (n = 0; n < (1< dist code (0..29) */ - dist = 0; - for (code = 0 ; code < 16; code++) { - base_dist[code] = dist; - for (n = 0; n < (1<>= 7; /* from now on, all distances are divided by 128 */ - for ( ; code < D_CODES; code++) { - base_dist[code] = dist << 7; - for (n = 0; n < (1<<(extra_dbits[code]-7)); n++) { - _dist_code[256 + dist++] = code; - } - } - //Assert (dist == 256, "tr_static_init: 256+dist != 512"); - - /* Construct the codes of the static literal tree */ - for (bits = 0; bits <= MAX_BITS; bits++) { - bl_count[bits] = 0; - } - - n = 0; - while (n <= 143) { - static_ltree[n*2 + 1]/*.Len*/ = 8; - n++; - bl_count[8]++; - } - while (n <= 255) { - static_ltree[n*2 + 1]/*.Len*/ = 9; - n++; - bl_count[9]++; - } - while (n <= 279) { - static_ltree[n*2 + 1]/*.Len*/ = 7; - n++; - bl_count[7]++; - } - while (n <= 287) { - static_ltree[n*2 + 1]/*.Len*/ = 8; - n++; - bl_count[8]++; - } - /* Codes 286 and 287 do not exist, but we must include them in the - * tree construction to get a canonical Huffman tree (longest code - * all ones) - */ - gen_codes(static_ltree, L_CODES+1, bl_count); - - /* The static distance tree is trivial: */ - for (n = 0; n < D_CODES; n++) { - static_dtree[n*2 + 1]/*.Len*/ = 5; - static_dtree[n*2]/*.Code*/ = bi_reverse(n, 5); - } - - // Now data ready and we can init static trees - static_l_desc = new StaticTreeDesc(static_ltree, extra_lbits, LITERALS+1, L_CODES, MAX_BITS); - static_d_desc = new StaticTreeDesc(static_dtree, extra_dbits, 0, D_CODES, MAX_BITS); - static_bl_desc =new StaticTreeDesc(new Array(0), extra_blbits, 0, BL_CODES, MAX_BL_BITS); - - //static_init_done = true; -} - - -/* =========================================================================== - * Initialize a new block. - */ -function init_block(s) { - var n; /* iterates over tree elements */ - - /* Initialize the trees. */ - for (n = 0; n < L_CODES; n++) { s.dyn_ltree[n*2]/*.Freq*/ = 0; } - for (n = 0; n < D_CODES; n++) { s.dyn_dtree[n*2]/*.Freq*/ = 0; } - for (n = 0; n < BL_CODES; n++) { s.bl_tree[n*2]/*.Freq*/ = 0; } - - s.dyn_ltree[END_BLOCK*2]/*.Freq*/ = 1; - s.opt_len = s.static_len = 0; - s.last_lit = s.matches = 0; -} - - -/* =========================================================================== - * Flush the bit buffer and align the output on a byte boundary - */ -function bi_windup(s) -{ - if (s.bi_valid > 8) { - put_short(s, s.bi_buf); - } else if (s.bi_valid > 0) { - //put_byte(s, (Byte)s->bi_buf); - s.pending_buf[s.pending++] = s.bi_buf; - } - s.bi_buf = 0; - s.bi_valid = 0; -} - -/* =========================================================================== - * Copy a stored block, storing first the length and its - * one's complement if requested. - */ -function copy_block(s, buf, len, header) -//DeflateState *s; -//charf *buf; /* the input data */ -//unsigned len; /* its length */ -//int header; /* true if block header must be written */ -{ - bi_windup(s); /* align on byte boundary */ - - if (header) { - put_short(s, len); - put_short(s, ~len); - } -// while (len--) { -// put_byte(s, *buf++); -// } - utils.arraySet(s.pending_buf, s.window, buf, len, s.pending); - s.pending += len; -} - -/* =========================================================================== - * Compares to subtrees, using the tree depth as tie breaker when - * the subtrees have equal frequency. This minimizes the worst case length. - */ -function smaller(tree, n, m, depth) { - var _n2 = n*2; - var _m2 = m*2; - return (tree[_n2]/*.Freq*/ < tree[_m2]/*.Freq*/ || - (tree[_n2]/*.Freq*/ === tree[_m2]/*.Freq*/ && depth[n] <= depth[m])); -} - -/* =========================================================================== - * Restore the heap property by moving down the tree starting at node k, - * exchanging a node with the smallest of its two sons if necessary, stopping - * when the heap property is re-established (each father smaller than its - * two sons). - */ -function pqdownheap(s, tree, k) -// deflate_state *s; -// ct_data *tree; /* the tree to restore */ -// int k; /* node to move down */ -{ - var v = s.heap[k]; - var j = k << 1; /* left son of k */ - while (j <= s.heap_len) { - /* Set j to the smallest of the two sons: */ - if (j < s.heap_len && - smaller(tree, s.heap[j+1], s.heap[j], s.depth)) { - j++; - } - /* Exit if v is smaller than both sons */ - if (smaller(tree, v, s.heap[j], s.depth)) { break; } - - /* Exchange v with the smallest son */ - s.heap[k] = s.heap[j]; - k = j; - - /* And continue down the tree, setting j to the left son of k */ - j <<= 1; - } - s.heap[k] = v; -} - - -// inlined manually -// var SMALLEST = 1; - -/* =========================================================================== - * Send the block data compressed using the given Huffman trees - */ -function compress_block(s, ltree, dtree) -// deflate_state *s; -// const ct_data *ltree; /* literal tree */ -// const ct_data *dtree; /* distance tree */ -{ - var dist; /* distance of matched string */ - var lc; /* match length or unmatched char (if dist == 0) */ - var lx = 0; /* running index in l_buf */ - var code; /* the code to send */ - var extra; /* number of extra bits to send */ - - if (s.last_lit !== 0) { - do { - dist = (s.pending_buf[s.d_buf + lx*2] << 8) | (s.pending_buf[s.d_buf + lx*2 + 1]); - lc = s.pending_buf[s.l_buf + lx]; - lx++; - - if (dist === 0) { - send_code(s, lc, ltree); /* send a literal byte */ - //Tracecv(isgraph(lc), (stderr," '%c' ", lc)); - } else { - /* Here, lc is the match length - MIN_MATCH */ - code = _length_code[lc]; - send_code(s, code+LITERALS+1, ltree); /* send the length code */ - extra = extra_lbits[code]; - if (extra !== 0) { - lc -= base_length[code]; - send_bits(s, lc, extra); /* send the extra length bits */ - } - dist--; /* dist is now the match distance - 1 */ - code = d_code(dist); - //Assert (code < D_CODES, "bad d_code"); - - send_code(s, code, dtree); /* send the distance code */ - extra = extra_dbits[code]; - if (extra !== 0) { - dist -= base_dist[code]; - send_bits(s, dist, extra); /* send the extra distance bits */ - } - } /* literal or match pair ? */ - - /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */ - //Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx, - // "pendingBuf overflow"); - - } while (lx < s.last_lit); - } - - send_code(s, END_BLOCK, ltree); -} - - -/* =========================================================================== - * Construct one Huffman tree and assigns the code bit strings and lengths. - * Update the total bit length for the current block. - * IN assertion: the field freq is set for all tree elements. - * OUT assertions: the fields len and code are set to the optimal bit length - * and corresponding code. The length opt_len is updated; static_len is - * also updated if stree is not null. The field max_code is set. - */ -function build_tree(s, desc) -// deflate_state *s; -// tree_desc *desc; /* the tree descriptor */ -{ - var tree = desc.dyn_tree; - var stree = desc.stat_desc.static_tree; - var has_stree = desc.stat_desc.has_stree; - var elems = desc.stat_desc.elems; - var n, m; /* iterate over heap elements */ - var max_code = -1; /* largest code with non zero frequency */ - var node; /* new node being created */ - - /* Construct the initial heap, with least frequent element in - * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1]. - * heap[0] is not used. - */ - s.heap_len = 0; - s.heap_max = HEAP_SIZE; - - for (n = 0; n < elems; n++) { - if (tree[n * 2]/*.Freq*/ !== 0) { - s.heap[++s.heap_len] = max_code = n; - s.depth[n] = 0; - - } else { - tree[n*2 + 1]/*.Len*/ = 0; - } - } - - /* The pkzip format requires that at least one distance code exists, - * and that at least one bit should be sent even if there is only one - * possible code. So to avoid special checks later on we force at least - * two codes of non zero frequency. - */ - while (s.heap_len < 2) { - node = s.heap[++s.heap_len] = (max_code < 2 ? ++max_code : 0); - tree[node * 2]/*.Freq*/ = 1; - s.depth[node] = 0; - s.opt_len--; - - if (has_stree) { - s.static_len -= stree[node*2 + 1]/*.Len*/; - } - /* node is 0 or 1 so it does not have extra bits */ - } - desc.max_code = max_code; - - /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree, - * establish sub-heaps of increasing lengths: - */ - for (n = (s.heap_len >> 1/*int /2*/); n >= 1; n--) { pqdownheap(s, tree, n); } - - /* Construct the Huffman tree by repeatedly combining the least two - * frequent nodes. - */ - node = elems; /* next internal node of the tree */ - do { - //pqremove(s, tree, n); /* n = node of least frequency */ - /*** pqremove ***/ - n = s.heap[1/*SMALLEST*/]; - s.heap[1/*SMALLEST*/] = s.heap[s.heap_len--]; - pqdownheap(s, tree, 1/*SMALLEST*/); - /***/ - - m = s.heap[1/*SMALLEST*/]; /* m = node of next least frequency */ - - s.heap[--s.heap_max] = n; /* keep the nodes sorted by frequency */ - s.heap[--s.heap_max] = m; - - /* Create a new node father of n and m */ - tree[node * 2]/*.Freq*/ = tree[n * 2]/*.Freq*/ + tree[m * 2]/*.Freq*/; - s.depth[node] = (s.depth[n] >= s.depth[m] ? s.depth[n] : s.depth[m]) + 1; - tree[n*2 + 1]/*.Dad*/ = tree[m*2 + 1]/*.Dad*/ = node; - - /* and insert the new node in the heap */ - s.heap[1/*SMALLEST*/] = node++; - pqdownheap(s, tree, 1/*SMALLEST*/); - - } while (s.heap_len >= 2); - - s.heap[--s.heap_max] = s.heap[1/*SMALLEST*/]; - - /* At this point, the fields freq and dad are set. We can now - * generate the bit lengths. - */ - gen_bitlen(s, desc); - - /* The field len is now set, we can generate the bit codes */ - gen_codes(tree, max_code, s.bl_count); -} - - -/* =========================================================================== - * Scan a literal or distance tree to determine the frequencies of the codes - * in the bit length tree. - */ -function scan_tree(s, tree, max_code) -// deflate_state *s; -// ct_data *tree; /* the tree to be scanned */ -// int max_code; /* and its largest code of non zero frequency */ -{ - var n; /* iterates over all tree elements */ - var prevlen = -1; /* last emitted length */ - var curlen; /* length of current code */ - - var nextlen = tree[0*2 + 1]/*.Len*/; /* length of next code */ - - var count = 0; /* repeat count of the current code */ - var max_count = 7; /* max repeat count */ - var min_count = 4; /* min repeat count */ - - if (nextlen === 0) { - max_count = 138; - min_count = 3; - } - tree[(max_code+1)*2 + 1]/*.Len*/ = 0xffff; /* guard */ - - for (n = 0; n <= max_code; n++) { - curlen = nextlen; - nextlen = tree[(n+1)*2 + 1]/*.Len*/; - - if (++count < max_count && curlen === nextlen) { - continue; - - } else if (count < min_count) { - s.bl_tree[curlen * 2]/*.Freq*/ += count; - - } else if (curlen !== 0) { - - if (curlen !== prevlen) { s.bl_tree[curlen * 2]/*.Freq*/++; } - s.bl_tree[REP_3_6*2]/*.Freq*/++; - - } else if (count <= 10) { - s.bl_tree[REPZ_3_10*2]/*.Freq*/++; - - } else { - s.bl_tree[REPZ_11_138*2]/*.Freq*/++; - } - - count = 0; - prevlen = curlen; - - if (nextlen === 0) { - max_count = 138; - min_count = 3; - - } else if (curlen === nextlen) { - max_count = 6; - min_count = 3; - - } else { - max_count = 7; - min_count = 4; - } - } -} - - -/* =========================================================================== - * Send a literal or distance tree in compressed form, using the codes in - * bl_tree. - */ -function send_tree(s, tree, max_code) -// deflate_state *s; -// ct_data *tree; /* the tree to be scanned */ -// int max_code; /* and its largest code of non zero frequency */ -{ - var n; /* iterates over all tree elements */ - var prevlen = -1; /* last emitted length */ - var curlen; /* length of current code */ - - var nextlen = tree[0*2 + 1]/*.Len*/; /* length of next code */ - - var count = 0; /* repeat count of the current code */ - var max_count = 7; /* max repeat count */ - var min_count = 4; /* min repeat count */ - - /* tree[max_code+1].Len = -1; */ /* guard already set */ - if (nextlen === 0) { - max_count = 138; - min_count = 3; - } - - for (n = 0; n <= max_code; n++) { - curlen = nextlen; - nextlen = tree[(n+1)*2 + 1]/*.Len*/; - - if (++count < max_count && curlen === nextlen) { - continue; - - } else if (count < min_count) { - do { send_code(s, curlen, s.bl_tree); } while (--count !== 0); - - } else if (curlen !== 0) { - if (curlen !== prevlen) { - send_code(s, curlen, s.bl_tree); - count--; - } - //Assert(count >= 3 && count <= 6, " 3_6?"); - send_code(s, REP_3_6, s.bl_tree); - send_bits(s, count-3, 2); - - } else if (count <= 10) { - send_code(s, REPZ_3_10, s.bl_tree); - send_bits(s, count-3, 3); - - } else { - send_code(s, REPZ_11_138, s.bl_tree); - send_bits(s, count-11, 7); - } - - count = 0; - prevlen = curlen; - if (nextlen === 0) { - max_count = 138; - min_count = 3; - - } else if (curlen === nextlen) { - max_count = 6; - min_count = 3; - - } else { - max_count = 7; - min_count = 4; - } - } -} - - -/* =========================================================================== - * Construct the Huffman tree for the bit lengths and return the index in - * bl_order of the last bit length code to send. - */ -function build_bl_tree(s) { - var max_blindex; /* index of last bit length code of non zero freq */ - - /* Determine the bit length frequencies for literal and distance trees */ - scan_tree(s, s.dyn_ltree, s.l_desc.max_code); - scan_tree(s, s.dyn_dtree, s.d_desc.max_code); - - /* Build the bit length tree: */ - build_tree(s, s.bl_desc); - /* opt_len now includes the length of the tree representations, except - * the lengths of the bit lengths codes and the 5+5+4 bits for the counts. - */ - - /* Determine the number of bit length codes to send. The pkzip format - * requires that at least 4 bit length codes be sent. (appnote.txt says - * 3 but the actual value used is 4.) - */ - for (max_blindex = BL_CODES-1; max_blindex >= 3; max_blindex--) { - if (s.bl_tree[bl_order[max_blindex]*2 + 1]/*.Len*/ !== 0) { - break; - } - } - /* Update opt_len to include the bit length tree and counts */ - s.opt_len += 3*(max_blindex+1) + 5+5+4; - //Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld", - // s->opt_len, s->static_len)); - - return max_blindex; -} - - -/* =========================================================================== - * Send the header for a block using dynamic Huffman trees: the counts, the - * lengths of the bit length codes, the literal tree and the distance tree. - * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4. - */ -function send_all_trees(s, lcodes, dcodes, blcodes) -// deflate_state *s; -// int lcodes, dcodes, blcodes; /* number of codes for each tree */ -{ - var rank; /* index in bl_order */ - - //Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes"); - //Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES, - // "too many codes"); - //Tracev((stderr, "\nbl counts: ")); - send_bits(s, lcodes-257, 5); /* not +255 as stated in appnote.txt */ - send_bits(s, dcodes-1, 5); - send_bits(s, blcodes-4, 4); /* not -3 as stated in appnote.txt */ - for (rank = 0; rank < blcodes; rank++) { - //Tracev((stderr, "\nbl code %2d ", bl_order[rank])); - send_bits(s, s.bl_tree[bl_order[rank]*2 + 1]/*.Len*/, 3); - } - //Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent)); - - send_tree(s, s.dyn_ltree, lcodes-1); /* literal tree */ - //Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent)); - - send_tree(s, s.dyn_dtree, dcodes-1); /* distance tree */ - //Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent)); -} - - -/* =========================================================================== - * Check if the data type is TEXT or BINARY, using the following algorithm: - * - TEXT if the two conditions below are satisfied: - * a) There are no non-portable control characters belonging to the - * "black list" (0..6, 14..25, 28..31). - * b) There is at least one printable character belonging to the - * "white list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255). - * - BINARY otherwise. - * - The following partially-portable control characters form a - * "gray list" that is ignored in this detection algorithm: - * (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}). - * IN assertion: the fields Freq of dyn_ltree are set. - */ -function detect_data_type(s) { - /* black_mask is the bit mask of black-listed bytes - * set bits 0..6, 14..25, and 28..31 - * 0xf3ffc07f = binary 11110011111111111100000001111111 - */ - var black_mask = 0xf3ffc07f; - var n; - - /* Check for non-textual ("black-listed") bytes. */ - for (n = 0; n <= 31; n++, black_mask >>>= 1) { - if ((black_mask & 1) && (s.dyn_ltree[n*2]/*.Freq*/ !== 0)) { - return Z_BINARY; - } - } - - /* Check for textual ("white-listed") bytes. */ - if (s.dyn_ltree[9 * 2]/*.Freq*/ !== 0 || s.dyn_ltree[10 * 2]/*.Freq*/ !== 0 || - s.dyn_ltree[13 * 2]/*.Freq*/ !== 0) { - return Z_TEXT; - } - for (n = 32; n < LITERALS; n++) { - if (s.dyn_ltree[n * 2]/*.Freq*/ !== 0) { - return Z_TEXT; - } - } - - /* There are no "black-listed" or "white-listed" bytes: - * this stream either is empty or has tolerated ("gray-listed") bytes only. - */ - return Z_BINARY; -} - - -var static_init_done = false; - -/* =========================================================================== - * Initialize the tree data structures for a new zlib stream. - */ -function _tr_init(s) -{ - - if (!static_init_done) { - tr_static_init(); - static_init_done = true; - } - - s.l_desc = new TreeDesc(s.dyn_ltree, static_l_desc); - s.d_desc = new TreeDesc(s.dyn_dtree, static_d_desc); - s.bl_desc = new TreeDesc(s.bl_tree, static_bl_desc); - - s.bi_buf = 0; - s.bi_valid = 0; - - /* Initialize the first block of the first file: */ - init_block(s); -} - - -/* =========================================================================== - * Send a stored block - */ -function _tr_stored_block(s, buf, stored_len, last) -//DeflateState *s; -//charf *buf; /* input block */ -//ulg stored_len; /* length of input block */ -//int last; /* one if this is the last block for a file */ -{ - send_bits(s, (STORED_BLOCK<<1)+(last ? 1 : 0), 3); /* send block type */ - copy_block(s, buf, stored_len, true); /* with header */ -} - - -/* =========================================================================== - * Send one empty static block to give enough lookahead for inflate. - * This takes 10 bits, of which 7 may remain in the bit buffer. - */ -function _tr_align(s) { - send_bits(s, STATIC_TREES<<1, 3); - send_code(s, END_BLOCK, static_ltree); - bi_flush(s); -} - - -/* =========================================================================== - * Determine the best encoding for the current block: dynamic trees, static - * trees or store, and output the encoded block to the zip file. - */ -function _tr_flush_block(s, buf, stored_len, last) -//DeflateState *s; -//charf *buf; /* input block, or NULL if too old */ -//ulg stored_len; /* length of input block */ -//int last; /* one if this is the last block for a file */ -{ - var opt_lenb, static_lenb; /* opt_len and static_len in bytes */ - var max_blindex = 0; /* index of last bit length code of non zero freq */ - - /* Build the Huffman trees unless a stored block is forced */ - if (s.level > 0) { - - /* Check if the file is binary or text */ - if (s.strm.data_type === Z_UNKNOWN) { - s.strm.data_type = detect_data_type(s); - } - - /* Construct the literal and distance trees */ - build_tree(s, s.l_desc); - // Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len, - // s->static_len)); - - build_tree(s, s.d_desc); - // Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len, - // s->static_len)); - /* At this point, opt_len and static_len are the total bit lengths of - * the compressed block data, excluding the tree representations. - */ - - /* Build the bit length tree for the above two trees, and get the index - * in bl_order of the last bit length code to send. - */ - max_blindex = build_bl_tree(s); - - /* Determine the best encoding. Compute the block lengths in bytes. */ - opt_lenb = (s.opt_len+3+7) >>> 3; - static_lenb = (s.static_len+3+7) >>> 3; - - // Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ", - // opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len, - // s->last_lit)); - - if (static_lenb <= opt_lenb) { opt_lenb = static_lenb; } - - } else { - // Assert(buf != (char*)0, "lost buf"); - opt_lenb = static_lenb = stored_len + 5; /* force a stored block */ - } - - if ((stored_len+4 <= opt_lenb) && (buf !== -1)) { - /* 4: two words for the lengths */ - - /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE. - * Otherwise we can't have processed more than WSIZE input bytes since - * the last block flush, because compression would have been - * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to - * transform a block into a stored block. - */ - _tr_stored_block(s, buf, stored_len, last); - - } else if (s.strategy === Z_FIXED || static_lenb === opt_lenb) { - - send_bits(s, (STATIC_TREES<<1) + (last ? 1 : 0), 3); - compress_block(s, static_ltree, static_dtree); - - } else { - send_bits(s, (DYN_TREES<<1) + (last ? 1 : 0), 3); - send_all_trees(s, s.l_desc.max_code+1, s.d_desc.max_code+1, max_blindex+1); - compress_block(s, s.dyn_ltree, s.dyn_dtree); - } - // Assert (s->compressed_len == s->bits_sent, "bad compressed size"); - /* The above check is made mod 2^32, for files larger than 512 MB - * and uLong implemented on 32 bits. - */ - init_block(s); - - if (last) { - bi_windup(s); - } - // Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3, - // s->compressed_len-7*last)); -} - -/* =========================================================================== - * Save the match info and tally the frequency counts. Return true if - * the current block must be flushed. - */ -function _tr_tally(s, dist, lc) -// deflate_state *s; -// unsigned dist; /* distance of matched string */ -// unsigned lc; /* match length-MIN_MATCH or unmatched char (if dist==0) */ -{ - //var out_length, in_length, dcode; - - s.pending_buf[s.d_buf + s.last_lit * 2] = (dist >>> 8) & 0xff; - s.pending_buf[s.d_buf + s.last_lit * 2 + 1] = dist & 0xff; - - s.pending_buf[s.l_buf + s.last_lit] = lc & 0xff; - s.last_lit++; - - if (dist === 0) { - /* lc is the unmatched char */ - s.dyn_ltree[lc*2]/*.Freq*/++; - } else { - s.matches++; - /* Here, lc is the match length - MIN_MATCH */ - dist--; /* dist = match distance - 1 */ - //Assert((ush)dist < (ush)MAX_DIST(s) && - // (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) && - // (ush)d_code(dist) < (ush)D_CODES, "_tr_tally: bad match"); - - s.dyn_ltree[(_length_code[lc]+LITERALS+1) * 2]/*.Freq*/++; - s.dyn_dtree[d_code(dist) * 2]/*.Freq*/++; - } - -// (!) This block is disabled in zlib defailts, -// don't enable it for binary compatibility - -//#ifdef TRUNCATE_BLOCK -// /* Try to guess if it is profitable to stop the current block here */ -// if ((s.last_lit & 0x1fff) === 0 && s.level > 2) { -// /* Compute an upper bound for the compressed length */ -// out_length = s.last_lit*8; -// in_length = s.strstart - s.block_start; -// -// for (dcode = 0; dcode < D_CODES; dcode++) { -// out_length += s.dyn_dtree[dcode*2]/*.Freq*/ * (5 + extra_dbits[dcode]); -// } -// out_length >>>= 3; -// //Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ", -// // s->last_lit, in_length, out_length, -// // 100L - out_length*100L/in_length)); -// if (s.matches < (s.last_lit>>1)/*int /2*/ && out_length < (in_length>>1)/*int /2*/) { -// return true; -// } -// } -//#endif - - return (s.last_lit === s.lit_bufsize-1); - /* We avoid equality with lit_bufsize because of wraparound at 64K - * on 16 bit machines and because stored blocks are restricted to - * 64K-1 bytes. - */ -} - -exports._tr_init = _tr_init; -exports._tr_stored_block = _tr_stored_block; -exports._tr_flush_block = _tr_flush_block; -exports._tr_tally = _tr_tally; -exports._tr_align = _tr_align; -},{"../utils/common":2}],9:[function(_dereq_,module,exports){ -'use strict'; - - -function ZStream() { - /* next input byte */ - this.input = null; // JS specific, because we have no pointers - this.next_in = 0; - /* number of bytes available at input */ - this.avail_in = 0; - /* total number of input bytes read so far */ - this.total_in = 0; - /* next output byte should be put there */ - this.output = null; // JS specific, because we have no pointers - this.next_out = 0; - /* remaining free space at output */ - this.avail_out = 0; - /* total number of bytes output so far */ - this.total_out = 0; - /* last error message, NULL if no error */ - this.msg = ''/*Z_NULL*/; - /* not visible by applications */ - this.state = null; - /* best guess about the data type: binary or text */ - 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a,n,r=t.max_chain_length,i=t.strstart,s=t.prev_length,h=t.nice_match,l=t.strstart>t.w_size-oe?t.strstart-(t.w_size-oe):0,o=t.window,_=t.w_mask,d=t.prev,u=t.strstart+le,f=o[i+s-1],c=o[i+s];t.prev_length>=t.good_match&&(r>>=2),h>t.lookahead&&(h=t.lookahead);do if(a=e,o[a+s]===c&&o[a+s-1]===f&&o[a]===o[i]&&o[++a]===o[i+1]){i+=2,a++;do;while(o[++i]===o[++a]&&o[++i]===o[++a]&&o[++i]===o[++a]&&o[++i]===o[++a]&&o[++i]===o[++a]&&o[++i]===o[++a]&&o[++i]===o[++a]&&o[++i]===o[++a]&&u>i);if(n=le-(u-i),i=u-le,n>s){if(t.match_start=e,s=n,n>=h)break;f=o[i+s-1],c=o[i+s]}}while((e=d[e&_])>l&&0!==--r);return s<=t.lookahead?s:t.lookahead}function u(t){var e,a,n,r,i,s=t.w_size;do{if(r=t.window_size-t.lookahead-t.strstart,t.strstart>=s+(s-oe)){S.arraySet(t.window,t.window,s,s,0),t.match_start-=s,t.strstart-=s,t.block_start-=s,a=t.hash_size,e=a;do n=t.head[--e],t.head[e]=n>=s?n-s:0;while(--a);a=s,e=a;do 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t.strstart++,t.ins_h=(t.ins_h<=he&&(t.ins_h=(t.ins_h<4096)&&(t.match_length=he-1)),t.prev_length>=he&&t.match_length<=t.prev_length){r=t.strstart+t.lookahead-he,n=E._tr_tally(t,t.strstart-1-t.prev_match,t.prev_length-he),t.lookahead-=t.prev_length-1,t.prev_length-=2;do++t.strstart<=r&&(t.ins_h=(t.ins_h<=he&&t.strstart>0&&(r=t.strstart-1,n=s[r],n===s[++r]&&n===s[++r]&&n===s[++r])){i=t.strstart+le;do;while(n===s[++r]&&n===s[++r]&&n===s[++r]&&n===s[++r]&&n===s[++r]&&n===s[++r]&&n===s[++r]&&n===s[++r]&&i>r);t.match_length=le-(i-r),t.match_length>t.lookahead&&(t.match_length=t.lookahead)}if(t.match_length>=he?(a=E._tr_tally(t,1,t.match_length-he),t.lookahead-=t.match_length,t.strstart+=t.match_length,t.match_length=0):(a=E._tr_tally(t,0,t.window[t.strstart]),t.lookahead--,t.strstart++),a&&(h(t,!1),0===t.strm.avail_out))return be}return t.insert=0,e===T?(h(t,!0),0===t.strm.avail_out?we:ye):t.last_lit&&(h(t,!1),0===t.strm.avail_out)?be:ve}function m(t,e){for(var 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S.Buf16(2*ae+1),i(this.depth),this.l_buf=0,this.lit_bufsize=0,this.last_lit=0,this.d_buf=0,this.opt_len=0,this.static_len=0,this.matches=0,this.insert=0,this.bi_buf=0,this.bi_valid=0}function w(t){var e;return t&&t.state?(t.total_in=t.total_out=0,t.data_type=W,e=t.state,e.pending=0,e.pending_out=0,e.wrap<0&&(e.wrap=-e.wrap),e.status=e.wrap?de:pe,t.adler=2===e.wrap?0:1,e.last_flush=q,E._tr_init(e),L):n(t,N)}function y(t){var e=w(t);return e===L&&b(t.state),e}function z(t,e){return t&&t.state?2!==t.state.wrap?N:(t.state.gzhead=e,L):N}function k(t,e,a,r,i,s){if(!t)return N;var h=1;if(e===F&&(e=6),0>r?(h=0,r=-r):r>15&&(h=2,r-=16),1>i||i>Y||a!==X||8>r||r>15||0>e||e>9||0>s||s>Q)return n(t,N);8===r&&(r=9);var l=new v;return t.state=l,l.strm=t,l.wrap=h,l.gzhead=null,l.w_bits=r,l.w_size=1<>1,l.l_buf=3*l.lit_bufsize,l.level=e,l.strategy=s,l.method=a,y(t)}function x(t,e){return k(t,e,X,Z,$,V)}function B(t,e){var a,h,_,d;if(!t||!t.state||e>H||0>e)return t?n(t,N):N;if(h=t.state,!t.output||!t.input&&0!==t.avail_in||h.status===me&&e!==T)return n(t,0===t.avail_out?P:N);if(h.strm=t,a=h.last_flush,h.last_flush=e,h.status===de)if(2===h.wrap)t.adler=0,l(h,31),l(h,139),l(h,8),h.gzhead?(l(h,(h.gzhead.text?1:0)+(h.gzhead.hcrc?2:0)+(h.gzhead.extra?4:0)+(h.gzhead.name?8:0)+(h.gzhead.comment?16:0)),l(h,255&h.gzhead.time),l(h,h.gzhead.time>>8&255),l(h,h.gzhead.time>>16&255),l(h,h.gzhead.time>>24&255),l(h,9===h.level?2:h.strategy>=J||h.level<2?4:0),l(h,255&h.gzhead.os),h.gzhead.extra&&h.gzhead.extra.length&&(l(h,255&h.gzhead.extra.length),l(h,h.gzhead.extra.length>>8&255)),h.gzhead.hcrc&&(t.adler=I(t.adler,h.pending_buf,h.pending,0)),h.gzindex=0,h.status=ue):(l(h,0),l(h,0),l(h,0),l(h,0),l(h,0),l(h,9===h.level?2:h.strategy>=J||h.level<2?4:0),l(h,ze),h.status=pe);else{var u=X+(h.w_bits-8<<4)<<8,f=-1;f=h.strategy>=J||h.level<2?0:h.level<6?1:6===h.level?2:3,u|=f<<6,0!==h.strstart&&(u|=_e),u+=31-u%31,h.status=pe,o(h,u),0!==h.strstart&&(o(h,t.adler>>>16),o(h,65535&t.adler)),t.adler=1}if(h.status===ue)if(h.gzhead.extra){for(_=h.pending;h.gzindex<(65535&h.gzhead.extra.length)&&(h.pending!==h.pending_buf_size||(h.gzhead.hcrc&&h.pending>_&&(t.adler=I(t.adler,h.pending_buf,h.pending-_,_)),s(t),_=h.pending,h.pending!==h.pending_buf_size));)l(h,255&h.gzhead.extra[h.gzindex]),h.gzindex++;h.gzhead.hcrc&&h.pending>_&&(t.adler=I(t.adler,h.pending_buf,h.pending-_,_)),h.gzindex===h.gzhead.extra.length&&(h.gzindex=0,h.status=fe)}else h.status=fe;if(h.status===fe)if(h.gzhead.name){_=h.pending;do{if(h.pending===h.pending_buf_size&&(h.gzhead.hcrc&&h.pending>_&&(t.adler=I(t.adler,h.pending_buf,h.pending-_,_)),s(t),_=h.pending,h.pending===h.pending_buf_size)){d=1;break}d=h.gzindex_&&(t.adler=I(t.adler,h.pending_buf,h.pending-_,_)),0===d&&(h.gzindex=0,h.status=ce)}else h.status=ce;if(h.status===ce)if(h.gzhead.comment){_=h.pending;do{if(h.pending===h.pending_buf_size&&(h.gzhead.hcrc&&h.pending>_&&(t.adler=I(t.adler,h.pending_buf,h.pending-_,_)),s(t),_=h.pending,h.pending===h.pending_buf_size)){d=1;break}d=h.gzindex_&&(t.adler=I(t.adler,h.pending_buf,h.pending-_,_)),0===d&&(h.status=ge)}else h.status=ge;if(h.status===ge&&(h.gzhead.hcrc?(h.pending+2>h.pending_buf_size&&s(t),h.pending+2<=h.pending_buf_size&&(l(h,255&t.adler),l(h,t.adler>>8&255),t.adler=0,h.status=pe)):h.status=pe),0!==h.pending){if(s(t),0===t.avail_out)return h.last_flush=-1,L}else if(0===t.avail_in&&r(e)<=r(a)&&e!==T)return n(t,P);if(h.status===me&&0!==t.avail_in)return n(t,P);if(0!==t.avail_in||0!==h.lookahead||e!==q&&h.status!==me){var c=h.strategy===J?m(h,e):h.strategy===M?p(h,e):C[h.level].func(h,e);if((c===we||c===ye)&&(h.status=me),c===be||c===we)return 0===t.avail_out&&(h.last_flush=-1),L;if(c===ve&&(e===D?E._tr_align(h):e!==H&&(E._tr_stored_block(h,0,0,!1),e===R&&(i(h.head),0===h.lookahead&&(h.strstart=0,h.block_start=0,h.insert=0))),s(t),0===t.avail_out))return h.last_flush=-1,L}return e!==T?L:h.wrap<=0?K:(2===h.wrap?(l(h,255&t.adler),l(h,t.adler>>8&255),l(h,t.adler>>16&255),l(h,t.adler>>24&255),l(h,255&t.total_in),l(h,t.total_in>>8&255),l(h,t.total_in>>16&255),l(h,t.total_in>>24&255)):(o(h,t.adler>>>16),o(h,65535&t.adler)),s(t),h.wrap>0&&(h.wrap=-h.wrap),0!==h.pending?L:K)}function A(t){var e;return t&&t.state?(e=t.state.status,e!==de&&e!==ue&&e!==fe&&e!==ce&&e!==ge&&e!==pe&&e!==me?n(t,N):(t.state=null,e===pe?n(t,O):L)):N}var C,S=t("../utils/common"),E=t("./trees"),j=t("./adler32"),I=t("./crc32"),U=t("./messages"),q=0,D=1,R=3,T=4,H=5,L=0,K=1,N=-2,O=-3,P=-5,F=-1,G=1,J=2,M=3,Q=4,V=0,W=2,X=8,Y=9,Z=15,$=8,te=29,ee=256,ae=ee+1+te,ne=30,re=19,ie=2*ae+1,se=15,he=3,le=258,oe=le+he+1,_e=32,de=42,ue=69,fe=73,ce=91,ge=103,pe=113,me=666,be=1,ve=2,we=3,ye=4,ze=3,ke=function(t,e,a,n,r){this.good_length=t,this.max_lazy=e,this.nice_length=a,this.max_chain=n,this.func=r};C=[new ke(0,0,0,0,f),new ke(4,4,8,4,c),new ke(4,5,16,8,c),new ke(4,6,32,32,c),new ke(4,4,16,16,g),new ke(8,16,32,32,g),new ke(8,16,128,128,g),new ke(8,32,128,256,g),new ke(32,128,258,1024,g),new ke(32,258,258,4096,g)],a.deflateInit=x,a.deflateInit2=k,a.deflateReset=y,a.deflateResetKeep=w,a.deflateSetHeader=z,a.deflate=B,a.deflateEnd=A,a.deflateInfo="pako deflate (from Nodeca project)"},{"../utils/common":2,"./adler32":4,"./crc32":5,"./messages":7,"./trees":8}],7:[function(t,e){"use strict";e.exports={2:"need dictionary",1:"stream end",0:"","-1":"file 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a,n,r,i,s,h,l=e.dyn_tree,o=e.max_code,_=e.stat_desc.static_tree,d=e.stat_desc.has_stree,u=e.stat_desc.extra_bits,f=e.stat_desc.extra_base,c=e.stat_desc.max_length,g=0;for(i=0;M>=i;i++)t.bl_count[i]=0;for(l[2*t.heap[t.heap_max]+1]=0,a=t.heap_max+1;J>a;a++)n=t.heap[a],i=l[2*l[2*n+1]+1]+1,i>c&&(i=c,g++),l[2*n+1]=i,n>o||(t.bl_count[i]++,s=0,n>=f&&(s=u[n-f]),h=l[2*n],t.opt_len+=h*(i+s),d&&(t.static_len+=h*(_[2*n+1]+s)));if(0!==g){do{for(i=c-1;0===t.bl_count[i];)i--;t.bl_count[i]--,t.bl_count[i+1]+=2,t.bl_count[c]--,g-=2}while(g>0);for(i=c;0!==i;i--)for(n=t.bl_count[i];0!==n;)r=t.heap[--a],r>o||(l[2*r+1]!==i&&(t.opt_len+=(i-l[2*r+1])*l[2*r],l[2*r+1]=i),n--)}}function d(t,e,a){var n,r,i=new Array(M+1),s=0;for(n=1;M>=n;n++)i[n]=s=s+a[n-1]<<1;for(r=0;e>=r;r++){var h=t[2*r+1];0!==h&&(t[2*r]=l(i[h]++,h))}}function u(){var t,e,a,n,r,i=new Array(M+1);for(a=0,n=0;N-1>n;n++)for(le[n]=a,t=0;t<1<<$[n];t++)he[a++]=n;for(he[a-1]=n,r=0,n=0;16>n;n++)for(oe[n]=r,t=0;t<1<>=7;F>n;n++)for(oe[n]=r<<7,t=0;t<1<=e;e++)i[e]=0;for(t=0;143>=t;)re[2*t+1]=8,t++,i[8]++;for(;255>=t;)re[2*t+1]=9,t++,i[9]++;for(;279>=t;)re[2*t+1]=7,t++,i[7]++;for(;287>=t;)re[2*t+1]=8,t++,i[8]++;for(d(re,P+1,i),t=0;F>t;t++)ie[2*t+1]=5,ie[2*t]=l(t,5);_e=new fe(re,$,O+1,P,M),de=new fe(ie,te,0,F,M),ue=new fe(new Array(0),ee,0,G,V)}function f(t){var e;for(e=0;P>e;e++)t.dyn_ltree[2*e]=0;for(e=0;F>e;e++)t.dyn_dtree[2*e]=0;for(e=0;G>e;e++)t.bl_tree[2*e]=0;t.dyn_ltree[2*W]=1,t.opt_len=t.static_len=0,t.last_lit=t.matches=0}function c(t){t.bi_valid>8?i(t,t.bi_buf):t.bi_valid>0&&(t.pending_buf[t.pending++]=t.bi_buf),t.bi_buf=0,t.bi_valid=0}function g(t,e,a,n){c(t),n&&(i(t,a),i(t,~a)),j.arraySet(t.pending_buf,t.window,e,a,t.pending),t.pending+=a}function p(t,e,a,n){var r=2*e,i=2*a;return t[r]a;a++)0!==i[2*a]?(t.heap[++t.heap_len]=o=a,t.depth[a]=0):i[2*a+1]=0;for(;t.heap_len<2;)r=t.heap[++t.heap_len]=2>o?++o:0,i[2*r]=1,t.depth[r]=0,t.opt_len--,h&&(t.static_len-=s[2*r+1]);for(e.max_code=o,a=t.heap_len>>1;a>=1;a--)m(t,i,a);r=l;do a=t.heap[1],t.heap[1]=t.heap[t.heap_len--],m(t,i,1),n=t.heap[1],t.heap[--t.heap_max]=a,t.heap[--t.heap_max]=n,i[2*r]=i[2*a]+i[2*n],t.depth[r]=(t.depth[a]>=t.depth[n]?t.depth[a]:t.depth[n])+1,i[2*a+1]=i[2*n+1]=r,t.heap[1]=r++,m(t,i,1);while(t.heap_len>=2);t.heap[--t.heap_max]=t.heap[1],_(t,e),d(i,o,t.bl_count)}function w(t,e,a){var n,r,i=-1,s=e[1],h=0,l=7,o=4;for(0===s&&(l=138,o=3),e[2*(a+1)+1]=65535,n=0;a>=n;n++)r=s,s=e[2*(n+1)+1],++hh?t.bl_tree[2*r]+=h:0!==r?(r!==i&&t.bl_tree[2*r]++,t.bl_tree[2*X]++):10>=h?t.bl_tree[2*Y]++:t.bl_tree[2*Z]++,h=0,i=r,0===s?(l=138,o=3):r===s?(l=6,o=3):(l=7,o=4))}function y(t,e,a){var n,r,i=-1,l=e[1],o=0,_=7,d=4;for(0===l&&(_=138,d=3),n=0;a>=n;n++)if(r=l,l=e[2*(n+1)+1],!(++o<_&&r===l)){if(d>o){do 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C(t){s(t,T<<1,3),h(t,W,re),o(t)}function S(t,e,a,n){var r,i,h=0;t.level>0?(t.strm.data_type===D&&(t.strm.data_type=x(t)),v(t,t.l_desc),v(t,t.d_desc),h=z(t),r=t.opt_len+3+7>>>3,i=t.static_len+3+7>>>3,r>=i&&(r=i)):r=i=a+5,r>=a+4&&-1!==e?A(t,e,a,n):t.strategy===I||i===r?(s(t,(T<<1)+(n?1:0),3),b(t,re,ie)):(s(t,(H<<1)+(n?1:0),3),k(t,t.l_desc.max_code+1,t.d_desc.max_code+1,h+1),b(t,t.dyn_ltree,t.dyn_dtree)),f(t),n&&c(t)}function E(t,e,a){return t.pending_buf[t.d_buf+2*t.last_lit]=e>>>8&255,t.pending_buf[t.d_buf+2*t.last_lit+1]=255&e,t.pending_buf[t.l_buf+t.last_lit]=255&a,t.last_lit++,0===e?t.dyn_ltree[2*a]++:(t.matches++,e--,t.dyn_ltree[2*(he[a]+O+1)]++,t.dyn_dtree[2*r(e)]++),t.last_lit===t.lit_bufsize-1}var j=t("../utils/common"),I=4,U=0,q=1,D=2,R=0,T=1,H=2,L=3,K=258,N=29,O=256,P=O+1+N,F=30,G=19,J=2*P+1,M=15,Q=16,V=7,W=256,X=16,Y=17,Z=18,$=[0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0],te=[0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13],ee=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7],ae=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],ne=512,re=new Array(2*(P+2));n(re);var ie=new Array(2*F);n(ie);var se=new Array(ne);n(se);var he=new Array(K-L+1);n(he);var le=new Array(N);n(le);var oe=new Array(F);n(oe);var _e,de,ue,fe=function(t,e,a,n,r){this.static_tree=t,this.extra_bits=e,this.extra_base=a,this.elems=n,this.max_length=r,this.has_stree=t&&t.length},ce=function(t,e){this.dyn_tree=t,this.max_code=0,this.stat_desc=e},ge=!1;a._tr_init=B,a._tr_stored_block=A,a._tr_flush_block=S,a._tr_tally=E,a._tr_align=C},{"../utils/common":2}],9:[function(t,e){"use strict";function a(){this.input=null,this.next_in=0,this.avail_in=0,this.total_in=0,this.output=null,this.next_out=0,this.avail_out=0,this.total_out=0,this.msg="",this.state=null,this.data_type=2,this.adler=0}e.exports=a},{}]},{},[1])(1)}); \ No newline at end of file diff --git a/modules/pako/dist/pako_inflate.js b/modules/pako/dist/pako_inflate.js deleted file mode 100644 index 6c9ebf37..00000000 --- a/modules/pako/dist/pako_inflate.js +++ /dev/null @@ -1,3025 +0,0 @@ -/* pako 0.2.5 nodeca/pako */!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.pako=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o Array - * - * Chunks of output data, if [[Inflate#onData]] not overriden. - **/ - -/** - * Inflate.result -> Uint8Array|Array|String - * - * Uncompressed result, generated by default [[Inflate#onData]] - * and [[Inflate#onEnd]] handlers. Filled after you push last chunk - * (call [[Inflate#push]] with `Z_FINISH` / `true` param). - **/ - -/** - * Inflate.err -> Number - * - * Error code after inflate finished. 0 (Z_OK) on success. - * Should be checked if broken data possible. - **/ - -/** - * Inflate.msg -> String - * - * Error message, if [[Inflate.err]] != 0 - **/ - - -/** - * new Inflate(options) - * - options (Object): zlib inflate options. - * - * Creates new inflator instance with specified params. Throws exception - * on bad params. Supported options: - * - * - `windowBits` - * - * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced) - * for more information on these. - * - * Additional options, for internal needs: - * - * - `chunkSize` - size of generated data chunks (16K by default) - * - `raw` (Boolean) - do raw inflate - * - `to` (String) - if equal to 'string', then result will be converted - * from utf8 to utf16 (javascript) string. When string output requested, - * chunk length can differ from `chunkSize`, depending on content. - * - * By default, when no options set, autodetect deflate/gzip data format via - * wrapper header. - * - * ##### Example: - * - * ```javascript - * var pako = require('pako') - * , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9]) - * , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]); - * - * var inflate = new pako.Inflate({ level: 3}); - * - * inflate.push(chunk1, false); - * inflate.push(chunk2, true); // true -> last chunk - * - * if (inflate.err) { throw new Error(inflate.err); } - * - * console.log(inflate.result); - * ``` - **/ -var Inflate = function(options) { - - this.options = utils.assign({ - chunkSize: 16384, - windowBits: 0, - to: '' - }, options || {}); - - var opt = this.options; - - // Force window size for `raw` data, if not set directly, - // because we have no header for autodetect. - if (opt.raw && (opt.windowBits >= 0) && (opt.windowBits < 16)) { - opt.windowBits = -opt.windowBits; - if (opt.windowBits === 0) { opt.windowBits = -15; } - } - - // If `windowBits` not defined (and mode not raw) - set autodetect flag for gzip/deflate - if ((opt.windowBits >= 0) && (opt.windowBits < 16) && - !(options && options.windowBits)) { - opt.windowBits += 32; - } - - // Gzip header has no info about windows size, we can do autodetect only - // for deflate. So, if window size not set, force it to max when gzip possible - if ((opt.windowBits > 15) && (opt.windowBits < 48)) { - // bit 3 (16) -> gzipped data - // bit 4 (32) -> autodetect gzip/deflate - if ((opt.windowBits & 15) === 0) { - opt.windowBits |= 15; - } - } - - this.err = 0; // error code, if happens (0 = Z_OK) - this.msg = ''; // error message - this.ended = false; // used to avoid multiple onEnd() calls - this.chunks = []; // chunks of compressed data - - this.strm = new zstream(); - this.strm.avail_out = 0; - - var status = zlib_inflate.inflateInit2( - this.strm, - opt.windowBits - ); - - if (status !== c.Z_OK) { - throw new Error(msg[status]); - } - - this.header = new gzheader(); - - zlib_inflate.inflateGetHeader(this.strm, this.header); -}; - -/** - * Inflate#push(data[, mode]) -> Boolean - * - data (Uint8Array|Array|String): input data - * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes. - * See constants. Skipped or `false` means Z_NO_FLUSH, `true` meansh Z_FINISH. - * - * Sends input data to inflate pipe, generating [[Inflate#onData]] calls with - * new output chunks. Returns `true` on success. The last data block must have - * mode Z_FINISH (or `true`). That flush internal pending buffers and call - * [[Inflate#onEnd]]. - * - * On fail call [[Inflate#onEnd]] with error code and return false. - * - * We strongly recommend to use `Uint8Array` on input for best speed (output - * format is detected automatically). Also, don't skip last param and always - * use the same type in your code (boolean or number). That will improve JS speed. - * - * For regular `Array`-s make sure all elements are [0..255]. - * - * ##### Example - * - * ```javascript - * push(chunk, false); // push one of data chunks - * ... - * push(chunk, true); // push last chunk - * ``` - **/ -Inflate.prototype.push = function(data, mode) { - var strm = this.strm; - var chunkSize = this.options.chunkSize; - var status, _mode; - var next_out_utf8, tail, utf8str; - - if (this.ended) { return false; } - _mode = (mode === ~~mode) ? mode : ((mode === true) ? c.Z_FINISH : c.Z_NO_FLUSH); - - // Convert data if needed - if (typeof data === 'string') { - // Only binary strings can be decompressed on practice - strm.input = strings.binstring2buf(data); - } else { - strm.input = data; - } - - strm.next_in = 0; - strm.avail_in = strm.input.length; - - do { - if (strm.avail_out === 0) { - strm.output = new utils.Buf8(chunkSize); - strm.next_out = 0; - strm.avail_out = chunkSize; - } - - status = zlib_inflate.inflate(strm, c.Z_NO_FLUSH); /* no bad return value */ - - if (status !== c.Z_STREAM_END && status !== c.Z_OK) { - this.onEnd(status); - this.ended = true; - return false; - } - - if (strm.next_out) { - if (strm.avail_out === 0 || status === c.Z_STREAM_END || (strm.avail_in === 0 && _mode === c.Z_FINISH)) { - - if (this.options.to === 'string') { - - next_out_utf8 = strings.utf8border(strm.output, strm.next_out); - - tail = strm.next_out - next_out_utf8; - utf8str = strings.buf2string(strm.output, next_out_utf8); - - // move tail - strm.next_out = tail; - strm.avail_out = chunkSize - tail; - if (tail) { utils.arraySet(strm.output, strm.output, next_out_utf8, tail, 0); } - - this.onData(utf8str); - - } else { - this.onData(utils.shrinkBuf(strm.output, strm.next_out)); - } - } - } - } while ((strm.avail_in > 0) && status !== c.Z_STREAM_END); - - if (status === c.Z_STREAM_END) { - _mode = c.Z_FINISH; - } - // Finalize on the last chunk. - if (_mode === c.Z_FINISH) { - status = zlib_inflate.inflateEnd(this.strm); - this.onEnd(status); - this.ended = true; - return status === c.Z_OK; - } - - return true; -}; - - -/** - * Inflate#onData(chunk) -> Void - * - chunk (Uint8Array|Array|String): ouput data. Type of array depends - * on js engine support. When string output requested, each chunk - * will be string. - * - * By default, stores data blocks in `chunks[]` property and glue - * those in `onEnd`. Override this handler, if you need another behaviour. - **/ -Inflate.prototype.onData = function(chunk) { - this.chunks.push(chunk); -}; - - -/** - * Inflate#onEnd(status) -> Void - * - status (Number): inflate status. 0 (Z_OK) on success, - * other if not. - * - * Called once after you tell inflate that input stream complete - * or error happenned. By default - join collected chunks, - * free memory and fill `results` / `err` properties. - **/ -Inflate.prototype.onEnd = function(status) { - // On success - join - if (status === c.Z_OK) { - if (this.options.to === 'string') { - // Glue & convert here, until we teach pako to send - // utf8 alligned strings to onData - this.result = this.chunks.join(''); - } else { - this.result = utils.flattenChunks(this.chunks); - } - } - this.chunks = []; - this.err = status; - this.msg = this.strm.msg; -}; - - -/** - * inflate(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to decompress. - * - options (Object): zlib inflate options. - * - * Decompress `data` with inflate/ungzip and `options`. Autodetect - * format via wrapper header by default. That's why we don't provide - * separate `ungzip` method. - * - * Supported options are: - * - * - windowBits - * - * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced) - * for more information. - * - * Sugar (options): - * - * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify - * negative windowBits implicitly. - * - `to` (String) - if equal to 'string', then result will be converted - * from utf8 to utf16 (javascript) string. When string output requested, - * chunk length can differ from `chunkSize`, depending on content. - * - * - * ##### Example: - * - * ```javascript - * var pako = require('pako') - * , input = pako.deflate([1,2,3,4,5,6,7,8,9]) - * , output; - * - * try { - * output = pako.inflate(input); - * } catch (err) - * console.log(err); - * } - * ``` - **/ -function inflate(input, options) { - var inflator = new Inflate(options); - - inflator.push(input, true); - - // That will never happens, if you don't cheat with options :) - if (inflator.err) { throw inflator.msg; } - - return inflator.result; -} - - -/** - * inflateRaw(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to decompress. - * - options (Object): zlib inflate options. - * - * The same as [[inflate]], but creates raw data, without wrapper - * (header and adler32 crc). - **/ -function inflateRaw(input, options) { - options = options || {}; - options.raw = true; - return inflate(input, options); -} - - -/** - * ungzip(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to decompress. - * - options (Object): zlib inflate options. - * - * Just shortcut to [[inflate]], because it autodetects format - * by header.content. Done for convenience. - **/ - - -exports.Inflate = Inflate; -exports.inflate = inflate; -exports.inflateRaw = inflateRaw; -exports.ungzip = inflate; - -},{"./utils/common":2,"./utils/strings":3,"./zlib/constants":5,"./zlib/gzheader":7,"./zlib/inflate.js":9,"./zlib/messages":11,"./zlib/zstream":12}],2:[function(_dereq_,module,exports){ -'use strict'; - - -var TYPED_OK = (typeof Uint8Array !== 'undefined') && - (typeof Uint16Array !== 'undefined') && - (typeof Int32Array !== 'undefined'); - - -exports.assign = function (obj /*from1, from2, from3, ...*/) { - var sources = Array.prototype.slice.call(arguments, 1); - while (sources.length) { - var source = sources.shift(); - if (!source) { continue; } - - if (typeof(source) !== 'object') { - throw new TypeError(source + 'must be non-object'); - } - - for (var p in source) { - if (source.hasOwnProperty(p)) { - obj[p] = source[p]; - } - } - } - - return obj; -}; - - -// reduce buffer size, avoiding mem copy -exports.shrinkBuf = function (buf, size) { - if (buf.length === size) { return buf; } - if (buf.subarray) { return buf.subarray(0, size); } - buf.length = size; - return buf; -}; - - -var fnTyped = { - arraySet: function (dest, src, src_offs, len, dest_offs) { - if (src.subarray && dest.subarray) { - dest.set(src.subarray(src_offs, src_offs+len), dest_offs); - return; - } - // Fallback to ordinary array - for(var i=0; i= 252 ? 6 : i >= 248 ? 5 : i >= 240 ? 4 : i >= 224 ? 3 : i >= 192 ? 2 : 1); -} -_utf8len[254]=_utf8len[254]=1; // Invalid sequence start - - -// convert string to array (typed, when possible) -exports.string2buf = function (str) { - var buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0; - - // count binary size - for (m_pos = 0; m_pos < str_len; m_pos++) { - c = str.charCodeAt(m_pos); - if ((c & 0xfc00) === 0xd800 && (m_pos+1 < str_len)) { - c2 = str.charCodeAt(m_pos+1); - if ((c2 & 0xfc00) === 0xdc00) { - c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00); - m_pos++; - } - } - buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4; - } - - // allocate buffer - buf = new utils.Buf8(buf_len); - - // convert - for (i=0, m_pos = 0; i < buf_len; m_pos++) { - c = str.charCodeAt(m_pos); - if ((c & 0xfc00) === 0xd800 && (m_pos+1 < str_len)) { - c2 = str.charCodeAt(m_pos+1); - if ((c2 & 0xfc00) === 0xdc00) { - c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00); - m_pos++; - } - } - if (c < 0x80) { - /* one byte */ - buf[i++] = c; - } else if (c < 0x800) { - /* two bytes */ - buf[i++] = 0xC0 | (c >>> 6); - buf[i++] = 0x80 | (c & 0x3f); - } else if (c < 0x10000) { - /* three bytes */ - buf[i++] = 0xE0 | (c >>> 12); - buf[i++] = 0x80 | (c >>> 6 & 0x3f); - buf[i++] = 0x80 | (c & 0x3f); - } else { - /* four bytes */ - buf[i++] = 0xf0 | (c >>> 18); - buf[i++] = 0x80 | (c >>> 12 & 0x3f); - buf[i++] = 0x80 | (c >>> 6 & 0x3f); - buf[i++] = 0x80 | (c & 0x3f); - } - } - - return buf; -}; - -// Helper (used in 2 places) -function buf2binstring(buf, len) { - // use fallback for big arrays to avoid stack overflow - if (len < 65537) { - if ((buf.subarray && STR_APPLY_UIA_OK) || (!buf.subarray && STR_APPLY_OK)) { - return String.fromCharCode.apply(null, utils.shrinkBuf(buf, len)); - } - } - - var result = ''; - for(var i=0; i < len; i++) { - result += String.fromCharCode(buf[i]); - } - return result; -} - - -// Convert byte array to binary string -exports.buf2binstring = function(buf) { - return buf2binstring(buf, buf.length); -}; - - -// Convert binary string (typed, when possible) -exports.binstring2buf = function(str) { - var buf = new utils.Buf8(str.length); - for(var i=0, len=buf.length; i < len; i++) { - buf[i] = str.charCodeAt(i); - } - return buf; -}; - - -// convert array to string -exports.buf2string = function (buf, max) { - var i, out, c, c_len; - var len = max || buf.length; - - // Reserve max possible length (2 words per char) - // NB: by unknown reasons, Array is significantly faster for - // String.fromCharCode.apply than Uint16Array. - var utf16buf = new Array(len*2); - - for (out=0, i=0; i 4) { utf16buf[out++] = 0xfffd; i += c_len-1; continue; } - - // apply mask on first byte - c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07; - // join the rest - while (c_len > 1 && i < len) { - c = (c << 6) | (buf[i++] & 0x3f); - c_len--; - } - - // terminated by end of string? - if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; } - - if (c < 0x10000) { - utf16buf[out++] = c; - } else { - c -= 0x10000; - utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff); - utf16buf[out++] = 0xdc00 | (c & 0x3ff); - } - } - - return buf2binstring(utf16buf, out); -}; - - -// Calculate max possible position in utf8 buffer, -// that will not break sequence. If that's not possible -// - (very small limits) return max size as is. -// -// buf[] - utf8 bytes array -// max - length limit (mandatory); -exports.utf8border = function(buf, max) { - var pos; - - max = max || buf.length; - if (max > buf.length) { max = buf.length; } - - // go back from last position, until start of sequence found - pos = max-1; - while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; } - - // Fuckup - very small and broken sequence, - // return max, because we should return something anyway. - if (pos < 0) { return max; } - - // If we came to start of buffer - that means vuffer is too small, - // return max too. - if (pos === 0) { return max; } - - return (pos + _utf8len[buf[pos]] > max) ? pos : max; -}; - -},{"./common":2}],4:[function(_dereq_,module,exports){ -'use strict'; - -// Note: adler32 takes 12% for level 0 and 2% for level 6. -// It doesn't worth to make additional optimizationa as in original. -// Small size is preferable. - -function adler32(adler, buf, len, pos) { - var s1 = (adler & 0xffff) |0 - , s2 = ((adler >>> 16) & 0xffff) |0 - , n = 0; - - while (len !== 0) { - // Set limit ~ twice less than 5552, to keep - // s2 in 31-bits, because we force signed ints. - // in other case %= will fail. - n = len > 2000 ? 2000 : len; - len -= n; - - do { - s1 = (s1 + buf[pos++]) |0; - s2 = (s2 + s1) |0; - } while (--n); - - s1 %= 65521; - s2 %= 65521; - } - - return (s1 | (s2 << 16)) |0; -} - - -module.exports = adler32; -},{}],5:[function(_dereq_,module,exports){ -module.exports = { - - /* Allowed flush values; see deflate() and inflate() below for details */ - Z_NO_FLUSH: 0, - Z_PARTIAL_FLUSH: 1, - Z_SYNC_FLUSH: 2, - Z_FULL_FLUSH: 3, - Z_FINISH: 4, - Z_BLOCK: 5, - Z_TREES: 6, - - /* Return codes for the compression/decompression functions. Negative values - * are errors, positive values are used for special but normal events. - */ - Z_OK: 0, - Z_STREAM_END: 1, - Z_NEED_DICT: 2, - Z_ERRNO: -1, - Z_STREAM_ERROR: -2, - Z_DATA_ERROR: -3, - //Z_MEM_ERROR: -4, - Z_BUF_ERROR: -5, - //Z_VERSION_ERROR: -6, - - /* compression levels */ - Z_NO_COMPRESSION: 0, - Z_BEST_SPEED: 1, - Z_BEST_COMPRESSION: 9, - Z_DEFAULT_COMPRESSION: -1, - - - Z_FILTERED: 1, - Z_HUFFMAN_ONLY: 2, - Z_RLE: 3, - Z_FIXED: 4, - Z_DEFAULT_STRATEGY: 0, - - /* Possible values of the data_type field (though see inflate()) */ - Z_BINARY: 0, - Z_TEXT: 1, - //Z_ASCII: 1, // = Z_TEXT (deprecated) - Z_UNKNOWN: 2, - - /* The deflate compression method */ - Z_DEFLATED: 8 - //Z_NULL: null // Use -1 or null inline, depending on var type -}; -},{}],6:[function(_dereq_,module,exports){ -'use strict'; - -// Note: we can't get significant speed boost here. -// So write code to minimize size - no pregenerated tables -// and array tools dependencies. - - -// Use ordinary array, since untyped makes no boost here -function makeTable() { - var c, table = []; - - for(var n =0; n < 256; n++){ - c = n; - for(var k =0; k < 8; k++){ - c = ((c&1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1)); - } - table[n] = c; - } - - return table; -} - -// Create table on load. Just 255 signed longs. Not a problem. -var crcTable = makeTable(); - - -function crc32(crc, buf, len, pos) { - var t = crcTable - , end = pos + len; - - crc = crc ^ (-1); - - for (var i = pos; i < end; i++ ) { - crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF]; - } - - return (crc ^ (-1)); // >>> 0; -} - - -module.exports = crc32; -},{}],7:[function(_dereq_,module,exports){ -'use strict'; - - -function GZheader() { - /* true if compressed data believed to be text */ - this.text = 0; - /* modification time */ - this.time = 0; - /* extra flags (not used when writing a gzip file) */ - this.xflags = 0; - /* operating system */ - this.os = 0; - /* pointer to extra field or Z_NULL if none */ - this.extra = null; - /* extra field length (valid if extra != Z_NULL) */ - this.extra_len = 0; // Actually, we don't need it in JS, - // but leave for few code modifications - - // - // Setup limits is not necessary because in js we should not preallocate memory - // for inflate use constant limit in 65536 bytes - // - - /* space at extra (only when reading header) */ - // this.extra_max = 0; - /* pointer to zero-terminated file name or Z_NULL */ - this.name = ''; - /* space at name (only when reading header) */ - // this.name_max = 0; - /* pointer to zero-terminated comment or Z_NULL */ - this.comment = ''; - /* space at comment (only when reading header) */ - // this.comm_max = 0; - /* true if there was or will be a header crc */ - this.hcrc = 0; - /* true when done reading gzip header (not used when writing a gzip file) */ - this.done = false; -} - -module.exports = GZheader; -},{}],8:[function(_dereq_,module,exports){ -'use strict'; - -// See state defs from inflate.js -var BAD = 30; /* got a data error -- remain here until reset */ -var TYPE = 12; /* i: waiting for type bits, including last-flag bit */ - -/* - Decode literal, length, and distance codes and write out the resulting - literal and match bytes until either not enough input or output is - available, an end-of-block is encountered, or a data error is encountered. - When large enough input and output buffers are supplied to inflate(), for - example, a 16K input buffer and a 64K output buffer, more than 95% of the - inflate execution time is spent in this routine. - - Entry assumptions: - - state.mode === LEN - strm.avail_in >= 6 - strm.avail_out >= 258 - start >= strm.avail_out - state.bits < 8 - - On return, state.mode is one of: - - LEN -- ran out of enough output space or enough available input - TYPE -- reached end of block code, inflate() to interpret next block - BAD -- error in block data - - Notes: - - - The maximum input bits used by a length/distance pair is 15 bits for the - length code, 5 bits for the length extra, 15 bits for the distance code, - and 13 bits for the distance extra. This totals 48 bits, or six bytes. - Therefore if strm.avail_in >= 6, then there is enough input to avoid - checking for available input while decoding. - - - The maximum bytes that a single length/distance pair can output is 258 - bytes, which is the maximum length that can be coded. inflate_fast() - requires strm.avail_out >= 258 for each loop to avoid checking for - output space. - */ -module.exports = function inflate_fast(strm, start) { - var state; - var _in; /* local strm.input */ - var last; /* have enough input while in < last */ - var _out; /* local strm.output */ - var beg; /* inflate()'s initial strm.output */ - var end; /* while out < end, enough space available */ -//#ifdef INFLATE_STRICT - var dmax; /* maximum distance from zlib header */ -//#endif - var wsize; /* window size or zero if not using window */ - var whave; /* valid bytes in the window */ - var wnext; /* window write index */ - var window; /* allocated sliding window, if wsize != 0 */ - var hold; /* local strm.hold */ - var bits; /* local strm.bits */ - var lcode; /* local strm.lencode */ - var dcode; /* local strm.distcode */ - var lmask; /* mask for first level of length codes */ - var dmask; /* mask for first level of distance codes */ - var here; /* retrieved table entry */ - var op; /* code bits, operation, extra bits, or */ - /* window position, window bytes to copy */ - var len; /* match length, unused bytes */ - var dist; /* match distance */ - var from; /* where to copy match from */ - var from_source; - - - var input, output; // JS specific, because we have no pointers - - /* copy state to local variables */ - state = strm.state; - //here = state.here; - _in = strm.next_in; - input = strm.input; - last = _in + (strm.avail_in - 5); - _out = strm.next_out; - output = strm.output; - beg = _out - (start - strm.avail_out); - end = _out + (strm.avail_out - 257); -//#ifdef INFLATE_STRICT - dmax = state.dmax; -//#endif - wsize = state.wsize; - whave = state.whave; - wnext = state.wnext; - window = state.window; - hold = state.hold; - bits = state.bits; - lcode = state.lencode; - dcode = state.distcode; - lmask = (1 << state.lenbits) - 1; - dmask = (1 << state.distbits) - 1; - - - /* decode literals and length/distances until end-of-block or not enough - input data or output space */ - - top: - do { - if (bits < 15) { - hold += input[_in++] << bits; - bits += 8; - hold += input[_in++] << bits; - bits += 8; - } - - here = lcode[hold & lmask]; - - dolen: - for (;;) { // Goto emulation - op = here >>> 24/*here.bits*/; - hold >>>= op; - bits -= op; - op = (here >>> 16) & 0xff/*here.op*/; - if (op === 0) { /* literal */ - //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ? - // "inflate: literal '%c'\n" : - // "inflate: literal 0x%02x\n", here.val)); - output[_out++] = here & 0xffff/*here.val*/; - } - else if (op & 16) { /* length base */ - len = here & 0xffff/*here.val*/; - op &= 15; /* number of extra bits */ - if (op) { - if (bits < op) { - hold += input[_in++] << bits; - bits += 8; - } - len += hold & ((1 << op) - 1); - hold >>>= op; - bits -= op; - } - //Tracevv((stderr, "inflate: length %u\n", len)); - if (bits < 15) { - hold += input[_in++] << bits; - bits += 8; - hold += input[_in++] << bits; - bits += 8; - } - here = dcode[hold & dmask]; - - dodist: - for (;;) { // goto emulation - op = here >>> 24/*here.bits*/; - hold >>>= op; - bits -= op; - op = (here >>> 16) & 0xff/*here.op*/; - - if (op & 16) { /* distance base */ - dist = here & 0xffff/*here.val*/; - op &= 15; /* number of extra bits */ - if (bits < op) { - hold += input[_in++] << bits; - bits += 8; - if (bits < op) { - hold += input[_in++] << bits; - bits += 8; - } - } - dist += hold & ((1 << op) - 1); -//#ifdef INFLATE_STRICT - if (dist > dmax) { - strm.msg = 'invalid distance too far back'; - state.mode = BAD; - break top; - } -//#endif - hold >>>= op; - bits -= op; - //Tracevv((stderr, "inflate: distance %u\n", dist)); - op = _out - beg; /* max distance in output */ - if (dist > op) { /* see if copy from window */ - op = dist - op; /* distance back in window */ - if (op > whave) { - if (state.sane) { - strm.msg = 'invalid distance too far back'; - state.mode = BAD; - break top; - } - -// (!) This block is disabled in zlib defailts, -// don't enable it for binary compatibility -//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR -// if (len <= op - whave) { -// do { -// output[_out++] = 0; -// } while (--len); -// continue top; -// } -// len -= op - whave; -// do { -// output[_out++] = 0; -// } while (--op > whave); -// if (op === 0) { -// from = _out - dist; -// do { -// output[_out++] = output[from++]; -// } while (--len); -// continue top; -// } -//#endif - } - from = 0; // window index - from_source = window; - if (wnext === 0) { /* very common case */ - from += wsize - op; - if (op < len) { /* some from window */ - len -= op; - do { - output[_out++] = window[from++]; - } while (--op); - from = _out - dist; /* rest from output */ - from_source = output; - } - } - else if (wnext < op) { /* wrap around window */ - from += wsize + wnext - op; - op -= wnext; - if (op < len) { /* some from end of window */ - len -= op; - do { - output[_out++] = window[from++]; - } while (--op); - from = 0; - if (wnext < len) { /* some from start of window */ - op = wnext; - len -= op; - do { - output[_out++] = window[from++]; - } while (--op); - from = _out - dist; /* rest from output */ - from_source = output; - } - } - } - else { /* contiguous in window */ - from += wnext - op; - if (op < len) { /* some from window */ - len -= op; - do { - output[_out++] = window[from++]; - } while (--op); - from = _out - dist; /* rest from output */ - from_source = output; - } - } - while (len > 2) { - output[_out++] = from_source[from++]; - output[_out++] = from_source[from++]; - output[_out++] = from_source[from++]; - len -= 3; - } - if (len) { - output[_out++] = from_source[from++]; - if (len > 1) { - output[_out++] = from_source[from++]; - } - } - } - else { - from = _out - dist; /* copy direct from output */ - do { /* minimum length is three */ - output[_out++] = output[from++]; - output[_out++] = output[from++]; - output[_out++] = output[from++]; - len -= 3; - } while (len > 2); - if (len) { - output[_out++] = output[from++]; - if (len > 1) { - output[_out++] = output[from++]; - } - } - } - } - else if ((op & 64) === 0) { /* 2nd level distance code */ - here = dcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))]; - continue dodist; - } - else { - strm.msg = 'invalid distance code'; - state.mode = BAD; - break top; - } - - break; // need to emulate goto via "continue" - } - } - else if ((op & 64) === 0) { /* 2nd level length code */ - here = lcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))]; - continue dolen; - } - else if (op & 32) { /* end-of-block */ - //Tracevv((stderr, "inflate: end of block\n")); - state.mode = TYPE; - break top; - } - else { - strm.msg = 'invalid literal/length code'; - state.mode = BAD; - break top; - } - - break; // need to emulate goto via "continue" - } - } while (_in < last && _out < end); - - /* return unused bytes (on entry, bits < 8, so in won't go too far back) */ - len = bits >> 3; - _in -= len; - bits -= len << 3; - hold &= (1 << bits) - 1; - - /* update state and return */ - strm.next_in = _in; - strm.next_out = _out; - strm.avail_in = (_in < last ? 5 + (last - _in) : 5 - (_in - last)); - strm.avail_out = (_out < end ? 257 + (end - _out) : 257 - (_out - end)); - state.hold = hold; - state.bits = bits; - return; -}; - -},{}],9:[function(_dereq_,module,exports){ -'use strict'; - - -var utils = _dereq_('../utils/common'); -var adler32 = _dereq_('./adler32'); -var crc32 = _dereq_('./crc32'); -var inflate_fast = _dereq_('./inffast'); -var inflate_table = _dereq_('./inftrees'); - -var CODES = 0; -var LENS = 1; -var DISTS = 2; - -/* Public constants ==========================================================*/ -/* ===========================================================================*/ - - -/* Allowed flush values; see deflate() and inflate() below for details */ -//var Z_NO_FLUSH = 0; -//var Z_PARTIAL_FLUSH = 1; -//var Z_SYNC_FLUSH = 2; -//var Z_FULL_FLUSH = 3; -var Z_FINISH = 4; -var Z_BLOCK = 5; -var Z_TREES = 6; - - -/* Return codes for the compression/decompression functions. Negative values - * are errors, positive values are used for special but normal events. - */ -var Z_OK = 0; -var Z_STREAM_END = 1; -var Z_NEED_DICT = 2; -//var Z_ERRNO = -1; -var Z_STREAM_ERROR = -2; -var Z_DATA_ERROR = -3; -var Z_MEM_ERROR = -4; -var Z_BUF_ERROR = -5; -//var Z_VERSION_ERROR = -6; - -/* The deflate compression method */ -var Z_DEFLATED = 8; - - -/* STATES ====================================================================*/ -/* ===========================================================================*/ - - -var HEAD = 1; /* i: waiting for magic header */ -var FLAGS = 2; /* i: waiting for method and flags (gzip) */ -var TIME = 3; /* i: waiting for modification time (gzip) */ -var OS = 4; /* i: waiting for extra flags and operating system (gzip) */ -var EXLEN = 5; /* i: waiting for extra length (gzip) */ -var EXTRA = 6; /* i: waiting for extra bytes (gzip) */ -var NAME = 7; /* i: waiting for end of file name (gzip) */ -var COMMENT = 8; /* i: waiting for end of comment (gzip) */ -var HCRC = 9; /* i: waiting for header crc (gzip) */ -var DICTID = 10; /* i: waiting for dictionary check value */ -var DICT = 11; /* waiting for inflateSetDictionary() call */ -var TYPE = 12; /* i: waiting for type bits, including last-flag bit */ -var TYPEDO = 13; /* i: same, but skip check to exit inflate on new block */ -var STORED = 14; /* i: waiting for stored size (length and complement) */ -var COPY_ = 15; /* i/o: same as COPY below, but only first time in */ -var COPY = 16; /* i/o: waiting for input or output to copy stored block */ -var TABLE = 17; /* i: waiting for dynamic block table lengths */ -var LENLENS = 18; /* i: waiting for code length code lengths */ -var CODELENS = 19; /* i: waiting for length/lit and distance code lengths */ -var LEN_ = 20; /* i: same as LEN below, but only first time in */ -var LEN = 21; /* i: waiting for length/lit/eob code */ -var LENEXT = 22; /* i: waiting for length extra bits */ -var DIST = 23; /* i: waiting for distance code */ -var DISTEXT = 24; /* i: waiting for distance extra bits */ -var MATCH = 25; /* o: waiting for output space to copy string */ -var LIT = 26; /* o: waiting for output space to write literal */ -var CHECK = 27; /* i: waiting for 32-bit check value */ -var LENGTH = 28; /* i: waiting for 32-bit length (gzip) */ -var DONE = 29; /* finished check, done -- remain here until reset */ -var BAD = 30; /* got a data error -- remain here until reset */ -var MEM = 31; /* got an inflate() memory error -- remain here until reset */ -var SYNC = 32; /* looking for synchronization bytes to restart inflate() */ - -/* ===========================================================================*/ - - - -var ENOUGH_LENS = 852; -var ENOUGH_DISTS = 592; -//var ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS); - -var MAX_WBITS = 15; -/* 32K LZ77 window */ -var DEF_WBITS = MAX_WBITS; - - -function ZSWAP32(q) { - return (((q >>> 24) & 0xff) + - ((q >>> 8) & 0xff00) + - ((q & 0xff00) << 8) + - ((q & 0xff) << 24)); -} - - -function InflateState() { - this.mode = 0; /* current inflate mode */ - this.last = false; /* true if processing last block */ - this.wrap = 0; /* bit 0 true for zlib, bit 1 true for gzip */ - this.havedict = false; /* true if dictionary provided */ - this.flags = 0; /* gzip header method and flags (0 if zlib) */ - this.dmax = 0; /* zlib header max distance (INFLATE_STRICT) */ - this.check = 0; /* protected copy of check value */ - this.total = 0; /* protected copy of output count */ - // TODO: may be {} - this.head = null; /* where to save gzip header information */ - - /* sliding window */ - this.wbits = 0; /* log base 2 of requested window size */ - this.wsize = 0; /* window size or zero if not using window */ - this.whave = 0; /* valid bytes in the window */ - this.wnext = 0; /* window write index */ - this.window = null; /* allocated sliding window, if needed */ - - /* bit accumulator */ - this.hold = 0; /* input bit accumulator */ - this.bits = 0; /* number of bits in "in" */ - - /* for string and stored block copying */ - this.length = 0; /* literal or length of data to copy */ - this.offset = 0; /* distance back to copy string from */ - - /* for table and code decoding */ - this.extra = 0; /* extra bits needed */ - - /* fixed and dynamic code tables */ - this.lencode = null; /* starting table for length/literal codes */ - this.distcode = null; /* starting table for distance codes */ - this.lenbits = 0; /* index bits for lencode */ - this.distbits = 0; /* index bits for distcode */ - - /* dynamic table building */ - this.ncode = 0; /* number of code length code lengths */ - this.nlen = 0; /* number of length code lengths */ - this.ndist = 0; /* number of distance code lengths */ - this.have = 0; /* number of code lengths in lens[] */ - this.next = null; /* next available space in codes[] */ - - this.lens = new utils.Buf16(320); /* temporary storage for code lengths */ - this.work = new utils.Buf16(288); /* work area for code table building */ - - /* - because we don't have pointers in js, we use lencode and distcode directly - as buffers so we don't need codes - */ - //this.codes = new utils.Buf32(ENOUGH); /* space for code tables */ - this.lendyn = null; /* dynamic table for length/literal codes (JS specific) */ - this.distdyn = null; /* dynamic table for distance codes (JS specific) */ - this.sane = 0; /* if false, allow invalid distance too far */ - this.back = 0; /* bits back of last unprocessed length/lit */ - this.was = 0; /* initial length of match */ -} - -function inflateResetKeep(strm) { - var state; - - if (!strm || !strm.state) { return Z_STREAM_ERROR; } - state = strm.state; - strm.total_in = strm.total_out = state.total = 0; - strm.msg = ''; /*Z_NULL*/ - if (state.wrap) { /* to support ill-conceived Java test suite */ - strm.adler = state.wrap & 1; - } - state.mode = HEAD; - state.last = 0; - state.havedict = 0; - state.dmax = 32768; - state.head = null/*Z_NULL*/; - state.hold = 0; - state.bits = 0; - //state.lencode = state.distcode = state.next = state.codes; - state.lencode = state.lendyn = new utils.Buf32(ENOUGH_LENS); - state.distcode = state.distdyn = new utils.Buf32(ENOUGH_DISTS); - - state.sane = 1; - state.back = -1; - //Tracev((stderr, "inflate: reset\n")); - return Z_OK; -} - -function inflateReset(strm) { - var state; - - if (!strm || !strm.state) { return Z_STREAM_ERROR; } - state = strm.state; - state.wsize = 0; - state.whave = 0; - state.wnext = 0; - return inflateResetKeep(strm); - -} - -function inflateReset2(strm, windowBits) { - var wrap; - var state; - - /* get the state */ - if (!strm || !strm.state) { return Z_STREAM_ERROR; } - state = strm.state; - - /* extract wrap request from windowBits parameter */ - if (windowBits < 0) { - wrap = 0; - windowBits = -windowBits; - } - else { - wrap = (windowBits >> 4) + 1; - if (windowBits < 48) { - windowBits &= 15; - } - } - - /* set number of window bits, free window if different */ - if (windowBits && (windowBits < 8 || windowBits > 15)) { - return Z_STREAM_ERROR; - } - if (state.window !== null && state.wbits !== windowBits) { - state.window = null; - } - - /* update state and reset the rest of it */ - state.wrap = wrap; - state.wbits = windowBits; - return inflateReset(strm); -} - -function inflateInit2(strm, windowBits) { - var ret; - var state; - - if (!strm) { return Z_STREAM_ERROR; } - //strm.msg = Z_NULL; /* in case we return an error */ - - state = new InflateState(); - - //if (state === Z_NULL) return Z_MEM_ERROR; - //Tracev((stderr, "inflate: allocated\n")); - strm.state = state; - state.window = null/*Z_NULL*/; - ret = inflateReset2(strm, windowBits); - if (ret !== Z_OK) { - strm.state = null/*Z_NULL*/; - } - return ret; -} - -function inflateInit(strm) { - return inflateInit2(strm, DEF_WBITS); -} - - -/* - Return state with length and distance decoding tables and index sizes set to - fixed code decoding. Normally this returns fixed tables from inffixed.h. - If BUILDFIXED is defined, then instead this routine builds the tables the - first time it's called, and returns those tables the first time and - thereafter. This reduces the size of the code by about 2K bytes, in - exchange for a little execution time. However, BUILDFIXED should not be - used for threaded applications, since the rewriting of the tables and virgin - may not be thread-safe. - */ -var virgin = true; - -var lenfix, distfix; // We have no pointers in JS, so keep tables separate - -function fixedtables(state) { - /* build fixed huffman tables if first call (may not be thread safe) */ - if (virgin) { - var sym; - - lenfix = new utils.Buf32(512); - distfix = new utils.Buf32(32); - - /* literal/length table */ - sym = 0; - while (sym < 144) { state.lens[sym++] = 8; } - while (sym < 256) { state.lens[sym++] = 9; } - while (sym < 280) { state.lens[sym++] = 7; } - while (sym < 288) { state.lens[sym++] = 8; } - - inflate_table(LENS, state.lens, 0, 288, lenfix, 0, state.work, {bits: 9}); - - /* distance table */ - sym = 0; - while (sym < 32) { state.lens[sym++] = 5; } - - inflate_table(DISTS, state.lens, 0, 32, distfix, 0, state.work, {bits: 5}); - - /* do this just once */ - virgin = false; - } - - state.lencode = lenfix; - state.lenbits = 9; - state.distcode = distfix; - state.distbits = 5; -} - - -/* - Update the window with the last wsize (normally 32K) bytes written before - returning. If window does not exist yet, create it. This is only called - when a window is already in use, or when output has been written during this - inflate call, but the end of the deflate stream has not been reached yet. - It is also called to create a window for dictionary data when a dictionary - is loaded. - - Providing output buffers larger than 32K to inflate() should provide a speed - advantage, since only the last 32K of output is copied to the sliding window - upon return from inflate(), and since all distances after the first 32K of - output will fall in the output data, making match copies simpler and faster. - The advantage may be dependent on the size of the processor's data caches. - */ -function updatewindow(strm, src, end, copy) { - var dist; - var state = strm.state; - - /* if it hasn't been done already, allocate space for the window */ - if (state.window === null) { - state.wsize = 1 << state.wbits; - state.wnext = 0; - state.whave = 0; - - state.window = new utils.Buf8(state.wsize); - } - - /* copy state->wsize or less output bytes into the circular window */ - if (copy >= state.wsize) { - utils.arraySet(state.window,src, end - state.wsize, state.wsize, 0); - state.wnext = 0; - state.whave = state.wsize; - } - else { - dist = state.wsize - state.wnext; - if (dist > copy) { - dist = copy; - } - //zmemcpy(state->window + state->wnext, end - copy, dist); - utils.arraySet(state.window,src, end - copy, dist, state.wnext); - copy -= dist; - if (copy) { - //zmemcpy(state->window, end - copy, copy); - utils.arraySet(state.window,src, end - copy, copy, 0); - state.wnext = copy; - state.whave = state.wsize; - } - else { - state.wnext += dist; - if (state.wnext === state.wsize) { state.wnext = 0; } - if (state.whave < state.wsize) { state.whave += dist; } - } - } - return 0; -} - -function inflate(strm, flush) { - var state; - var input, output; // input/output buffers - var next; /* next input INDEX */ - var put; /* next output INDEX */ - var have, left; /* available input and output */ - var hold; /* bit buffer */ - var bits; /* bits in bit buffer */ - var _in, _out; /* save starting available input and output */ - var copy; /* number of stored or match bytes to copy */ - var from; /* where to copy match bytes from */ - var from_source; - var here = 0; /* current decoding table entry */ - var here_bits, here_op, here_val; // paked "here" denormalized (JS specific) - //var last; /* parent table entry */ - var last_bits, last_op, last_val; // paked "last" denormalized (JS specific) - var len; /* length to copy for repeats, bits to drop */ - var ret; /* return code */ - var hbuf = new utils.Buf8(4); /* buffer for gzip header crc calculation */ - var opts; - - var n; // temporary var for NEED_BITS - - var order = /* permutation of code lengths */ - [16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15]; - - - if (!strm || !strm.state || !strm.output || - (!strm.input && strm.avail_in !== 0)) { - return Z_STREAM_ERROR; - } - - state = strm.state; - if (state.mode === TYPE) { state.mode = TYPEDO; } /* skip check */ - - - //--- LOAD() --- - put = strm.next_out; - output = strm.output; - left = strm.avail_out; - next = strm.next_in; - input = strm.input; - have = strm.avail_in; - hold = state.hold; - bits = state.bits; - //--- - - _in = have; - _out = left; - ret = Z_OK; - - inf_leave: // goto emulation - for (;;) { - switch (state.mode) { - case HEAD: - if (state.wrap === 0) { - state.mode = TYPEDO; - break; - } - //=== NEEDBITS(16); - while (bits < 16) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if ((state.wrap & 2) && hold === 0x8b1f) { /* gzip header */ - state.check = 0/*crc32(0L, Z_NULL, 0)*/; - //=== CRC2(state.check, hold); - hbuf[0] = hold & 0xff; - hbuf[1] = (hold >>> 8) & 0xff; - state.check = crc32(state.check, hbuf, 2, 0); - //===// - - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = FLAGS; - break; - } - state.flags = 0; /* expect zlib header */ - if (state.head) { - state.head.done = false; - } - if (!(state.wrap & 1) || /* check if zlib header allowed */ - (((hold & 0xff)/*BITS(8)*/ << 8) + (hold >> 8)) % 31) { - strm.msg = 'incorrect header check'; - state.mode = BAD; - break; - } - if ((hold & 0x0f)/*BITS(4)*/ !== Z_DEFLATED) { - strm.msg = 'unknown compression method'; - state.mode = BAD; - break; - } - //--- DROPBITS(4) ---// - hold >>>= 4; - bits -= 4; - //---// - len = (hold & 0x0f)/*BITS(4)*/ + 8; - if (state.wbits === 0) { - state.wbits = len; - } - else if (len > state.wbits) { - strm.msg = 'invalid window size'; - state.mode = BAD; - break; - } - state.dmax = 1 << len; - //Tracev((stderr, "inflate: zlib header ok\n")); - strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/; - state.mode = hold & 0x200 ? DICTID : TYPE; - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - break; - case FLAGS: - //=== NEEDBITS(16); */ - while (bits < 16) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.flags = hold; - if ((state.flags & 0xff) !== Z_DEFLATED) { - strm.msg = 'unknown compression method'; - state.mode = BAD; - break; - } - if (state.flags & 0xe000) { - strm.msg = 'unknown header flags set'; - state.mode = BAD; - break; - } - if (state.head) { - state.head.text = ((hold >> 8) & 1); - } - if (state.flags & 0x0200) { - //=== CRC2(state.check, hold); - hbuf[0] = hold & 0xff; - hbuf[1] = (hold >>> 8) & 0xff; - state.check = crc32(state.check, hbuf, 2, 0); - //===// - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = TIME; - /* falls through */ - case TIME: - //=== NEEDBITS(32); */ - while (bits < 32) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if (state.head) { - state.head.time = hold; - } - if (state.flags & 0x0200) { - //=== CRC4(state.check, hold) - hbuf[0] = hold & 0xff; - hbuf[1] = (hold >>> 8) & 0xff; - hbuf[2] = (hold >>> 16) & 0xff; - hbuf[3] = (hold >>> 24) & 0xff; - state.check = crc32(state.check, hbuf, 4, 0); - //=== - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = OS; - /* falls through */ - case OS: - //=== NEEDBITS(16); */ - while (bits < 16) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if (state.head) { - state.head.xflags = (hold & 0xff); - state.head.os = (hold >> 8); - } - if (state.flags & 0x0200) { - //=== CRC2(state.check, hold); - hbuf[0] = hold & 0xff; - hbuf[1] = (hold >>> 8) & 0xff; - state.check = crc32(state.check, hbuf, 2, 0); - //===// - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = EXLEN; - /* falls through */ - case EXLEN: - if (state.flags & 0x0400) { - //=== NEEDBITS(16); */ - while (bits < 16) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.length = hold; - if (state.head) { - state.head.extra_len = hold; - } - if (state.flags & 0x0200) { - //=== CRC2(state.check, hold); - hbuf[0] = hold & 0xff; - hbuf[1] = (hold >>> 8) & 0xff; - state.check = crc32(state.check, hbuf, 2, 0); - //===// - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - } - else if (state.head) { - state.head.extra = null/*Z_NULL*/; - } - state.mode = EXTRA; - /* falls through */ - case EXTRA: - if (state.flags & 0x0400) { - copy = state.length; - if (copy > have) { copy = have; } - if (copy) { - if (state.head) { - len = state.head.extra_len - state.length; - if (!state.head.extra) { - // Use untyped array for more conveniend processing later - state.head.extra = new Array(state.head.extra_len); - } - utils.arraySet( - state.head.extra, - input, - next, - // extra field is limited to 65536 bytes - // - no need for additional size check - copy, - /*len + copy > state.head.extra_max - len ? state.head.extra_max : copy,*/ - len - ); - //zmemcpy(state.head.extra + len, next, - // len + copy > state.head.extra_max ? - // state.head.extra_max - len : copy); - } - if (state.flags & 0x0200) { - state.check = crc32(state.check, input, copy, next); - } - have -= copy; - next += copy; - state.length -= copy; - } - if (state.length) { break inf_leave; } - } - state.length = 0; - state.mode = NAME; - /* falls through */ - case NAME: - if (state.flags & 0x0800) { - if (have === 0) { break inf_leave; } - copy = 0; - do { - // TODO: 2 or 1 bytes? - len = input[next + copy++]; - /* use constant limit because in js we should not preallocate memory */ - if (state.head && len && - (state.length < 65536 /*state.head.name_max*/)) { - state.head.name += String.fromCharCode(len); - } - } while (len && copy < have); - - if (state.flags & 0x0200) { - state.check = crc32(state.check, input, copy, next); - } - have -= copy; - next += copy; - if (len) { break inf_leave; } - } - else if (state.head) { - state.head.name = null; - } - state.length = 0; - state.mode = COMMENT; - /* falls through */ - case COMMENT: - if (state.flags & 0x1000) { - if (have === 0) { break inf_leave; } - copy = 0; - do { - len = input[next + copy++]; - /* use constant limit because in js we should not preallocate memory */ - if (state.head && len && - (state.length < 65536 /*state.head.comm_max*/)) { - state.head.comment += String.fromCharCode(len); - } - } while (len && copy < have); - if (state.flags & 0x0200) { - state.check = crc32(state.check, input, copy, next); - } - have -= copy; - next += copy; - if (len) { break inf_leave; } - } - else if (state.head) { - state.head.comment = null; - } - state.mode = HCRC; - /* falls through */ - case HCRC: - if (state.flags & 0x0200) { - //=== NEEDBITS(16); */ - while (bits < 16) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if (hold !== (state.check & 0xffff)) { - strm.msg = 'header crc mismatch'; - state.mode = BAD; - break; - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - } - if (state.head) { - state.head.hcrc = ((state.flags >> 9) & 1); - state.head.done = true; - } - strm.adler = state.check = 0 /*crc32(0L, Z_NULL, 0)*/; - state.mode = TYPE; - break; - case DICTID: - //=== NEEDBITS(32); */ - while (bits < 32) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - strm.adler = state.check = ZSWAP32(hold); - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = DICT; - /* falls through */ - case DICT: - if (state.havedict === 0) { - //--- RESTORE() --- - strm.next_out = put; - strm.avail_out = left; - strm.next_in = next; - strm.avail_in = have; - state.hold = hold; - state.bits = bits; - //--- - return Z_NEED_DICT; - } - strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/; - state.mode = TYPE; - /* falls through */ - case TYPE: - if (flush === Z_BLOCK || flush === Z_TREES) { break inf_leave; } - /* falls through */ - case TYPEDO: - if (state.last) { - //--- BYTEBITS() ---// - hold >>>= bits & 7; - bits -= bits & 7; - //---// - state.mode = CHECK; - break; - } - //=== NEEDBITS(3); */ - while (bits < 3) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.last = (hold & 0x01)/*BITS(1)*/; - //--- DROPBITS(1) ---// - hold >>>= 1; - bits -= 1; - //---// - - switch ((hold & 0x03)/*BITS(2)*/) { - case 0: /* stored block */ - //Tracev((stderr, "inflate: stored block%s\n", - // state.last ? " (last)" : "")); - state.mode = STORED; - break; - case 1: /* fixed block */ - fixedtables(state); - //Tracev((stderr, "inflate: fixed codes block%s\n", - // state.last ? " (last)" : "")); - state.mode = LEN_; /* decode codes */ - if (flush === Z_TREES) { - //--- DROPBITS(2) ---// - hold >>>= 2; - bits -= 2; - //---// - break inf_leave; - } - break; - case 2: /* dynamic block */ - //Tracev((stderr, "inflate: dynamic codes block%s\n", - // state.last ? " (last)" : "")); - state.mode = TABLE; - break; - case 3: - strm.msg = 'invalid block type'; - state.mode = BAD; - } - //--- DROPBITS(2) ---// - hold >>>= 2; - bits -= 2; - //---// - break; - case STORED: - //--- BYTEBITS() ---// /* go to byte boundary */ - hold >>>= bits & 7; - bits -= bits & 7; - //---// - //=== NEEDBITS(32); */ - while (bits < 32) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if ((hold & 0xffff) !== ((hold >>> 16) ^ 0xffff)) { - strm.msg = 'invalid stored block lengths'; - state.mode = BAD; - break; - } - state.length = hold & 0xffff; - //Tracev((stderr, "inflate: stored length %u\n", - // state.length)); - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = COPY_; - if (flush === Z_TREES) { break inf_leave; } - /* falls through */ - case COPY_: - state.mode = COPY; - /* falls through */ - case COPY: - copy = state.length; - if (copy) { - if (copy > have) { copy = have; } - if (copy > left) { copy = left; } - if (copy === 0) { break inf_leave; } - //--- zmemcpy(put, next, copy); --- - utils.arraySet(output, input, next, copy, put); - //---// - have -= copy; - next += copy; - left -= copy; - put += copy; - state.length -= copy; - break; - } - //Tracev((stderr, "inflate: stored end\n")); - state.mode = TYPE; - break; - case TABLE: - //=== NEEDBITS(14); */ - while (bits < 14) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.nlen = (hold & 0x1f)/*BITS(5)*/ + 257; - //--- DROPBITS(5) ---// - hold >>>= 5; - bits -= 5; - //---// - state.ndist = (hold & 0x1f)/*BITS(5)*/ + 1; - //--- DROPBITS(5) ---// - hold >>>= 5; - bits -= 5; - //---// - state.ncode = (hold & 0x0f)/*BITS(4)*/ + 4; - //--- DROPBITS(4) ---// - hold >>>= 4; - bits -= 4; - //---// -//#ifndef PKZIP_BUG_WORKAROUND - if (state.nlen > 286 || state.ndist > 30) { - strm.msg = 'too many length or distance symbols'; - state.mode = BAD; - break; - } -//#endif - //Tracev((stderr, "inflate: table sizes ok\n")); - state.have = 0; - state.mode = LENLENS; - /* falls through */ - case LENLENS: - while (state.have < state.ncode) { - //=== NEEDBITS(3); - while (bits < 3) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.lens[order[state.have++]] = (hold & 0x07);//BITS(3); - //--- DROPBITS(3) ---// - hold >>>= 3; - bits -= 3; - //---// - } - while (state.have < 19) { - state.lens[order[state.have++]] = 0; - } - // We have separate tables & no pointers. 2 commented lines below not needed. - //state.next = state.codes; - //state.lencode = state.next; - // Switch to use dynamic table - state.lencode = state.lendyn; - state.lenbits = 7; - - opts = {bits: state.lenbits}; - ret = inflate_table(CODES, state.lens, 0, 19, state.lencode, 0, state.work, opts); - state.lenbits = opts.bits; - - if (ret) { - strm.msg = 'invalid code lengths set'; - state.mode = BAD; - break; - } - //Tracev((stderr, "inflate: code lengths ok\n")); - state.have = 0; - state.mode = CODELENS; - /* falls through */ - case CODELENS: - while (state.have < state.nlen + state.ndist) { - for (;;) { - here = state.lencode[hold & ((1 << state.lenbits) - 1)];/*BITS(state.lenbits)*/ - here_bits = here >>> 24; - here_op = (here >>> 16) & 0xff; - here_val = here & 0xffff; - - if ((here_bits) <= bits) { break; } - //--- PULLBYTE() ---// - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - //---// - } - if (here_val < 16) { - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - state.lens[state.have++] = here_val; - } - else { - if (here_val === 16) { - //=== NEEDBITS(here.bits + 2); - n = here_bits + 2; - while (bits < n) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - if (state.have === 0) { - strm.msg = 'invalid bit length repeat'; - state.mode = BAD; - break; - } - len = state.lens[state.have - 1]; - copy = 3 + (hold & 0x03);//BITS(2); - //--- DROPBITS(2) ---// - hold >>>= 2; - bits -= 2; - //---// - } - else if (here_val === 17) { - //=== NEEDBITS(here.bits + 3); - n = here_bits + 3; - while (bits < n) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - len = 0; - copy = 3 + (hold & 0x07);//BITS(3); - //--- DROPBITS(3) ---// - hold >>>= 3; - bits -= 3; - //---// - } - else { - //=== NEEDBITS(here.bits + 7); - n = here_bits + 7; - while (bits < n) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - len = 0; - copy = 11 + (hold & 0x7f);//BITS(7); - //--- DROPBITS(7) ---// - hold >>>= 7; - bits -= 7; - //---// - } - if (state.have + copy > state.nlen + state.ndist) { - strm.msg = 'invalid bit length repeat'; - state.mode = BAD; - break; - } - while (copy--) { - state.lens[state.have++] = len; - } - } - } - - /* handle error breaks in while */ - if (state.mode === BAD) { break; } - - /* check for end-of-block code (better have one) */ - if (state.lens[256] === 0) { - strm.msg = 'invalid code -- missing end-of-block'; - state.mode = BAD; - break; - } - - /* build code tables -- note: do not change the lenbits or distbits - values here (9 and 6) without reading the comments in inftrees.h - concerning the ENOUGH constants, which depend on those values */ - state.lenbits = 9; - - opts = {bits: state.lenbits}; - ret = inflate_table(LENS, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts); - // We have separate tables & no pointers. 2 commented lines below not needed. - // state.next_index = opts.table_index; - state.lenbits = opts.bits; - // state.lencode = state.next; - - if (ret) { - strm.msg = 'invalid literal/lengths set'; - state.mode = BAD; - break; - } - - state.distbits = 6; - //state.distcode.copy(state.codes); - // Switch to use dynamic table - state.distcode = state.distdyn; - opts = {bits: state.distbits}; - ret = inflate_table(DISTS, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts); - // We have separate tables & no pointers. 2 commented lines below not needed. - // state.next_index = opts.table_index; - state.distbits = opts.bits; - // state.distcode = state.next; - - if (ret) { - strm.msg = 'invalid distances set'; - state.mode = BAD; - break; - } - //Tracev((stderr, 'inflate: codes ok\n')); - state.mode = LEN_; - if (flush === Z_TREES) { break inf_leave; } - /* falls through */ - case LEN_: - state.mode = LEN; - /* falls through */ - case LEN: - if (have >= 6 && left >= 258) { - //--- RESTORE() --- - strm.next_out = put; - strm.avail_out = left; - strm.next_in = next; - strm.avail_in = have; - state.hold = hold; - state.bits = bits; - //--- - inflate_fast(strm, _out); - //--- LOAD() --- - put = strm.next_out; - output = strm.output; - left = strm.avail_out; - next = strm.next_in; - input = strm.input; - have = strm.avail_in; - hold = state.hold; - bits = state.bits; - //--- - - if (state.mode === TYPE) { - state.back = -1; - } - break; - } - state.back = 0; - for (;;) { - here = state.lencode[hold & ((1 << state.lenbits) -1)]; /*BITS(state.lenbits)*/ - here_bits = here >>> 24; - here_op = (here >>> 16) & 0xff; - here_val = here & 0xffff; - - if (here_bits <= bits) { break; } - //--- PULLBYTE() ---// - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - //---// - } - if (here_op && (here_op & 0xf0) === 0) { - last_bits = here_bits; - last_op = here_op; - last_val = here_val; - for (;;) { - here = state.lencode[last_val + - ((hold & ((1 << (last_bits + last_op)) -1))/*BITS(last.bits + last.op)*/ >> last_bits)]; - here_bits = here >>> 24; - here_op = (here >>> 16) & 0xff; - here_val = here & 0xffff; - - if ((last_bits + here_bits) <= bits) { break; } - //--- PULLBYTE() ---// - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - //---// - } - //--- DROPBITS(last.bits) ---// - hold >>>= last_bits; - bits -= last_bits; - //---// - state.back += last_bits; - } - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - state.back += here_bits; - state.length = here_val; - if (here_op === 0) { - //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ? - // "inflate: literal '%c'\n" : - // "inflate: literal 0x%02x\n", here.val)); - state.mode = LIT; - break; - } - if (here_op & 32) { - //Tracevv((stderr, "inflate: end of block\n")); - state.back = -1; - state.mode = TYPE; - break; - } - if (here_op & 64) { - strm.msg = 'invalid literal/length code'; - state.mode = BAD; - break; - } - state.extra = here_op & 15; - state.mode = LENEXT; - /* falls through */ - case LENEXT: - if (state.extra) { - //=== NEEDBITS(state.extra); - n = state.extra; - while (bits < n) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.length += hold & ((1 << state.extra) -1)/*BITS(state.extra)*/; - //--- DROPBITS(state.extra) ---// - hold >>>= state.extra; - bits -= state.extra; - //---// - state.back += state.extra; - } - //Tracevv((stderr, "inflate: length %u\n", state.length)); - state.was = state.length; - state.mode = DIST; - /* falls through */ - case DIST: - for (;;) { - here = state.distcode[hold & ((1 << state.distbits) -1)];/*BITS(state.distbits)*/ - here_bits = here >>> 24; - here_op = (here >>> 16) & 0xff; - here_val = here & 0xffff; - - if ((here_bits) <= bits) { break; } - //--- PULLBYTE() ---// - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - //---// - } - if ((here_op & 0xf0) === 0) { - last_bits = here_bits; - last_op = here_op; - last_val = here_val; - for (;;) { - here = state.distcode[last_val + - ((hold & ((1 << (last_bits + last_op)) -1))/*BITS(last.bits + last.op)*/ >> last_bits)]; - here_bits = here >>> 24; - here_op = (here >>> 16) & 0xff; - here_val = here & 0xffff; - - if ((last_bits + here_bits) <= bits) { break; } - //--- PULLBYTE() ---// - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - //---// - } - //--- DROPBITS(last.bits) ---// - hold >>>= last_bits; - bits -= last_bits; - //---// - state.back += last_bits; - } - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - state.back += here_bits; - if (here_op & 64) { - strm.msg = 'invalid distance code'; - state.mode = BAD; - break; - } - state.offset = here_val; - state.extra = (here_op) & 15; - state.mode = DISTEXT; - /* falls through */ - case DISTEXT: - if (state.extra) { - //=== NEEDBITS(state.extra); - n = state.extra; - while (bits < n) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.offset += hold & ((1 << state.extra) -1)/*BITS(state.extra)*/; - //--- DROPBITS(state.extra) ---// - hold >>>= state.extra; - bits -= state.extra; - //---// - state.back += state.extra; - } -//#ifdef INFLATE_STRICT - if (state.offset > state.dmax) { - strm.msg = 'invalid distance too far back'; - state.mode = BAD; - break; - } -//#endif - //Tracevv((stderr, "inflate: distance %u\n", state.offset)); - state.mode = MATCH; - /* falls through */ - case MATCH: - if (left === 0) { break inf_leave; } - copy = _out - left; - if (state.offset > copy) { /* copy from window */ - copy = state.offset - copy; - if (copy > state.whave) { - if (state.sane) { - strm.msg = 'invalid distance too far back'; - state.mode = BAD; - break; - } -// (!) This block is disabled in zlib defailts, -// don't enable it for binary compatibility -//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR -// Trace((stderr, "inflate.c too far\n")); -// copy -= state.whave; -// if (copy > state.length) { copy = state.length; } -// if (copy > left) { copy = left; } -// left -= copy; -// state.length -= copy; -// do { -// output[put++] = 0; -// } while (--copy); -// if (state.length === 0) { state.mode = LEN; } -// break; -//#endif - } - if (copy > state.wnext) { - copy -= state.wnext; - from = state.wsize - copy; - } - else { - from = state.wnext - copy; - } - if (copy > state.length) { copy = state.length; } - from_source = state.window; - } - else { /* copy from output */ - from_source = output; - from = put - state.offset; - copy = state.length; - } - if (copy > left) { copy = left; } - left -= copy; - state.length -= copy; - do { - output[put++] = from_source[from++]; - } while (--copy); - if (state.length === 0) { state.mode = LEN; } - break; - case LIT: - if (left === 0) { break inf_leave; } - output[put++] = state.length; - left--; - state.mode = LEN; - break; - case CHECK: - if (state.wrap) { - //=== NEEDBITS(32); - while (bits < 32) { - if (have === 0) { break inf_leave; } - have--; - // Use '|' insdead of '+' to make sure that result is signed - hold |= input[next++] << bits; - bits += 8; - } - //===// - _out -= left; - strm.total_out += _out; - state.total += _out; - if (_out) { - strm.adler = state.check = - /*UPDATE(state.check, put - _out, _out);*/ - (state.flags ? crc32(state.check, output, _out, put - _out) : adler32(state.check, output, _out, put - _out)); - - } - _out = left; - // NB: crc32 stored as signed 32-bit int, ZSWAP32 returns signed too - if ((state.flags ? hold : ZSWAP32(hold)) !== state.check) { - strm.msg = 'incorrect data check'; - state.mode = BAD; - break; - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - //Tracev((stderr, "inflate: check matches trailer\n")); - } - state.mode = LENGTH; - /* falls through */ - case LENGTH: - if (state.wrap && state.flags) { - //=== NEEDBITS(32); - while (bits < 32) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if (hold !== (state.total & 0xffffffff)) { - strm.msg = 'incorrect length check'; - state.mode = BAD; - break; - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - //Tracev((stderr, "inflate: length matches trailer\n")); - } - state.mode = DONE; - /* falls through */ - case DONE: - ret = Z_STREAM_END; - break inf_leave; - case BAD: - ret = Z_DATA_ERROR; - break inf_leave; - case MEM: - return Z_MEM_ERROR; - case SYNC: - /* falls through */ - default: - return Z_STREAM_ERROR; - } - } - - // inf_leave <- here is real place for "goto inf_leave", emulated via "break inf_leave" - - /* - Return from inflate(), updating the total counts and the check value. - If there was no progress during the inflate() call, return a buffer - error. Call updatewindow() to create and/or update the window state. - Note: a memory error from inflate() is non-recoverable. - */ - - //--- RESTORE() --- - strm.next_out = put; - strm.avail_out = left; - strm.next_in = next; - strm.avail_in = have; - state.hold = hold; - state.bits = bits; - //--- - - if (state.wsize || (_out !== strm.avail_out && state.mode < BAD && - (state.mode < CHECK || flush !== Z_FINISH))) { - if (updatewindow(strm, strm.output, strm.next_out, _out - strm.avail_out)) { - state.mode = MEM; - return Z_MEM_ERROR; - } - } - _in -= strm.avail_in; - _out -= strm.avail_out; - strm.total_in += _in; - strm.total_out += _out; - state.total += _out; - if (state.wrap && _out) { - strm.adler = state.check = /*UPDATE(state.check, strm.next_out - _out, _out);*/ - (state.flags ? crc32(state.check, output, _out, strm.next_out - _out) : adler32(state.check, output, _out, strm.next_out - _out)); - } - strm.data_type = state.bits + (state.last ? 64 : 0) + - (state.mode === TYPE ? 128 : 0) + - (state.mode === LEN_ || state.mode === COPY_ ? 256 : 0); - if (((_in === 0 && _out === 0) || flush === Z_FINISH) && ret === Z_OK) { - ret = Z_BUF_ERROR; - } - return ret; -} - -function inflateEnd(strm) { - - if (!strm || !strm.state /*|| strm->zfree == (free_func)0*/) { - return Z_STREAM_ERROR; - } - - var state = strm.state; - if (state.window) { - state.window = null; - } - strm.state = null; - return Z_OK; -} - -function inflateGetHeader(strm, head) { - var state; - - /* check state */ - if (!strm || !strm.state) { return Z_STREAM_ERROR; } - state = strm.state; - if ((state.wrap & 2) === 0) { return Z_STREAM_ERROR; } - - /* save header structure */ - state.head = head; - head.done = false; - return Z_OK; -} - - -exports.inflateReset = inflateReset; -exports.inflateReset2 = inflateReset2; -exports.inflateResetKeep = inflateResetKeep; -exports.inflateInit = inflateInit; -exports.inflateInit2 = inflateInit2; -exports.inflate = inflate; -exports.inflateEnd = inflateEnd; -exports.inflateGetHeader = inflateGetHeader; -exports.inflateInfo = 'pako inflate (from Nodeca project)'; - -/* Not implemented -exports.inflateCopy = inflateCopy; -exports.inflateGetDictionary = inflateGetDictionary; -exports.inflateMark = inflateMark; -exports.inflatePrime = inflatePrime; -exports.inflateSetDictionary = inflateSetDictionary; -exports.inflateSync = inflateSync; -exports.inflateSyncPoint = inflateSyncPoint; -exports.inflateUndermine = inflateUndermine; -*/ -},{"../utils/common":2,"./adler32":4,"./crc32":6,"./inffast":8,"./inftrees":10}],10:[function(_dereq_,module,exports){ -'use strict'; - - -var utils = _dereq_('../utils/common'); - -var MAXBITS = 15; -var ENOUGH_LENS = 852; -var ENOUGH_DISTS = 592; -//var ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS); - -var CODES = 0; -var LENS = 1; -var DISTS = 2; - -var lbase = [ /* Length codes 257..285 base */ - 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, - 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0 -]; - -var lext = [ /* Length codes 257..285 extra */ - 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18, - 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78 -]; - -var dbase = [ /* Distance codes 0..29 base */ - 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, - 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, - 8193, 12289, 16385, 24577, 0, 0 -]; - -var dext = [ /* Distance codes 0..29 extra */ - 16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, - 23, 23, 24, 24, 25, 25, 26, 26, 27, 27, - 28, 28, 29, 29, 64, 64 -]; - -module.exports = function inflate_table(type, lens, lens_index, codes, table, table_index, work, opts) -{ - var bits = opts.bits; - //here = opts.here; /* table entry for duplication */ - - var len = 0; /* a code's length in bits */ - var sym = 0; /* index of code symbols */ - var min = 0, max = 0; /* minimum and maximum code lengths */ - var root = 0; /* number of index bits for root table */ - var curr = 0; /* number of index bits for current table */ - var drop = 0; /* code bits to drop for sub-table */ - var left = 0; /* number of prefix codes available */ - var used = 0; /* code entries in table used */ - var huff = 0; /* Huffman code */ - var incr; /* for incrementing code, index */ - var fill; /* index for replicating entries */ - var low; /* low bits for current root entry */ - var mask; /* mask for low root bits */ - var next; /* next available space in table */ - var base = null; /* base value table to use */ - var base_index = 0; -// var shoextra; /* extra bits table to use */ - var end; /* use base and extra for symbol > end */ - var count = new utils.Buf16(MAXBITS+1); //[MAXBITS+1]; /* number of codes of each length */ - var offs = new utils.Buf16(MAXBITS+1); //[MAXBITS+1]; /* offsets in table for each length */ - var extra = null; - var extra_index = 0; - - var here_bits, here_op, here_val; - - /* - Process a set of code lengths to create a canonical Huffman code. The - code lengths are lens[0..codes-1]. Each length corresponds to the - symbols 0..codes-1. The Huffman code is generated by first sorting the - symbols by length from short to long, and retaining the symbol order - for codes with equal lengths. Then the code starts with all zero bits - for the first code of the shortest length, and the codes are integer - increments for the same length, and zeros are appended as the length - increases. For the deflate format, these bits are stored backwards - from their more natural integer increment ordering, and so when the - decoding tables are built in the large loop below, the integer codes - are incremented backwards. - - This routine assumes, but does not check, that all of the entries in - lens[] are in the range 0..MAXBITS. The caller must assure this. - 1..MAXBITS is interpreted as that code length. zero means that that - symbol does not occur in this code. - - The codes are sorted by computing a count of codes for each length, - creating from that a table of starting indices for each length in the - sorted table, and then entering the symbols in order in the sorted - table. The sorted table is work[], with that space being provided by - the caller. - - The length counts are used for other purposes as well, i.e. finding - the minimum and maximum length codes, determining if there are any - codes at all, checking for a valid set of lengths, and looking ahead - at length counts to determine sub-table sizes when building the - decoding tables. - */ - - /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */ - for (len = 0; len <= MAXBITS; len++) { - count[len] = 0; - } - for (sym = 0; sym < codes; sym++) { - count[lens[lens_index + sym]]++; - } - - /* bound code lengths, force root to be within code lengths */ - root = bits; - for (max = MAXBITS; max >= 1; max--) { - if (count[max] !== 0) { break; } - } - if (root > max) { - root = max; - } - if (max === 0) { /* no symbols to code at all */ - //table.op[opts.table_index] = 64; //here.op = (var char)64; /* invalid code marker */ - //table.bits[opts.table_index] = 1; //here.bits = (var char)1; - //table.val[opts.table_index++] = 0; //here.val = (var short)0; - table[table_index++] = (1 << 24) | (64 << 16) | 0; - - - //table.op[opts.table_index] = 64; - //table.bits[opts.table_index] = 1; - //table.val[opts.table_index++] = 0; - table[table_index++] = (1 << 24) | (64 << 16) | 0; - - opts.bits = 1; - return 0; /* no symbols, but wait for decoding to report error */ - } - for (min = 1; min < max; min++) { - if (count[min] !== 0) { break; } - } - if (root < min) { - root = min; - } - - /* check for an over-subscribed or incomplete set of lengths */ - left = 1; - for (len = 1; len <= MAXBITS; len++) { - left <<= 1; - left -= count[len]; - if (left < 0) { - return -1; - } /* over-subscribed */ - } - if (left > 0 && (type === CODES || max !== 1)) { - return -1; /* incomplete set */ - } - - /* generate offsets into symbol table for each length for sorting */ - offs[1] = 0; - for (len = 1; len < MAXBITS; len++) { - offs[len + 1] = offs[len] + count[len]; - } - - /* sort symbols by length, by symbol order within each length */ - for (sym = 0; sym < codes; sym++) { - if (lens[lens_index + sym] !== 0) { - work[offs[lens[lens_index + sym]]++] = sym; - } - } - - /* - Create and fill in decoding tables. In this loop, the table being - filled is at next and has curr index bits. The code being used is huff - with length len. That code is converted to an index by dropping drop - bits off of the bottom. For codes where len is less than drop + curr, - those top drop + curr - len bits are incremented through all values to - fill the table with replicated entries. - - root is the number of index bits for the root table. When len exceeds - root, sub-tables are created pointed to by the root entry with an index - of the low root bits of huff. This is saved in low to check for when a - new sub-table should be started. drop is zero when the root table is - being filled, and drop is root when sub-tables are being filled. - - When a new sub-table is needed, it is necessary to look ahead in the - code lengths to determine what size sub-table is needed. The length - counts are used for this, and so count[] is decremented as codes are - entered in the tables. - - used keeps track of how many table entries have been allocated from the - provided *table space. It is checked for LENS and DIST tables against - the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in - the initial root table size constants. See the comments in inftrees.h - for more information. - - sym increments through all symbols, and the loop terminates when - all codes of length max, i.e. all codes, have been processed. This - routine permits incomplete codes, so another loop after this one fills - in the rest of the decoding tables with invalid code markers. - */ - - /* set up for code type */ - // poor man optimization - use if-else instead of switch, - // to avoid deopts in old v8 - if (type === CODES) { - base = extra = work; /* dummy value--not used */ - end = 19; - } else if (type === LENS) { - base = lbase; - base_index -= 257; - extra = lext; - extra_index -= 257; - end = 256; - } else { /* DISTS */ - base = dbase; - extra = dext; - end = -1; - } - - /* initialize opts for loop */ - huff = 0; /* starting code */ - sym = 0; /* starting code symbol */ - len = min; /* starting code length */ - next = table_index; /* current table to fill in */ - curr = root; /* current table index bits */ - drop = 0; /* current bits to drop from code for index */ - low = -1; /* trigger new sub-table when len > root */ - used = 1 << root; /* use root table entries */ - mask = used - 1; /* mask for comparing low */ - - /* check available table space */ - if ((type === LENS && used > ENOUGH_LENS) || - (type === DISTS && used > ENOUGH_DISTS)) { - return 1; - } - - var i=0; - /* process all codes and make table entries */ - for (;;) { - i++; - /* create table entry */ - here_bits = len - drop; - if (work[sym] < end) { - here_op = 0; - here_val = work[sym]; - } - else if (work[sym] > end) { - here_op = extra[extra_index + work[sym]]; - here_val = base[base_index + work[sym]]; - } - else { - here_op = 32 + 64; /* end of block */ - here_val = 0; - } - - /* replicate for those indices with low len bits equal to huff */ - incr = 1 << (len - drop); - fill = 1 << curr; - min = fill; /* save offset to next table */ - do { - fill -= incr; - table[next + (huff >> drop) + fill] = (here_bits << 24) | (here_op << 16) | here_val |0; - } while (fill !== 0); - - /* backwards increment the len-bit code huff */ - incr = 1 << (len - 1); - while (huff & incr) { - incr >>= 1; - } - if (incr !== 0) { - huff &= incr - 1; 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e;f--,u+=a[s++]<>>=7&c,c-=7&c,i.mode=ft;break}for(;3>c;){if(0===f)break e;f--,u+=a[s++]<>>=1,c-=1,3&u){case 0:i.mode=W;break;case 1:if(d(i),i.mode=tt,t===Z){u>>>=2,c-=2;break e}break;case 2:i.mode=V;break;case 3:e.msg="invalid block type",i.mode=ht}u>>>=2,c-=2;break;case W:for(u>>>=7&c,c-=7&c;32>c;){if(0===f)break e;f--,u+=a[s++]<>>16^65535)){e.msg="invalid stored block lengths",i.mode=ht;break}if(i.length=65535&u,u=0,c=0,i.mode=J,t===Z)break e;case J:i.mode=Q;case Q:if(m=i.length){if(m>f&&(m=f),m>l&&(m=l),0===m)break e;k.arraySet(r,a,s,m,o),f-=m,s+=m,l-=m,o+=m,i.length-=m;break}i.mode=G;break;case V:for(;14>c;){if(0===f)break e;f--,u+=a[s++]<>>=5,c-=5,i.ndist=(31&u)+1,u>>>=5,c-=5,i.ncode=(15&u)+4,u>>>=4,c-=4,i.nlen>286||i.ndist>30){e.msg="too many length or distance symbols",i.mode=ht;break}i.have=0,i.mode=$;case $:for(;i.havec;){if(0===f)break e;f--,u+=a[s++]<>>=3,c-=3}for(;i.have<19;)i.lens[At[i.have++]]=0;if(i.lencode=i.lendyn,i.lenbits=7,St={bits:i.lenbits},yt=p(x,i.lens,0,19,i.lencode,0,i.work,St),i.lenbits=St.bits,yt){e.msg="invalid code lengths set",i.mode=ht;break}i.have=0,i.mode=et;case et:for(;i.have>>24,kt=Et>>>16&255,gt=65535&Et,!(c>=mt);){if(0===f)break e;f--,u+=a[s++]<gt)u>>>=mt,c-=mt,i.lens[i.have++]=gt;else{if(16===gt){for(Bt=mt+2;Bt>c;){if(0===f)break e;f--,u+=a[s++]<>>=mt,c-=mt,0===i.have){e.msg="invalid bit length repeat",i.mode=ht;break}xt=i.lens[i.have-1],m=3+(3&u),u>>>=2,c-=2}else if(17===gt){for(Bt=mt+3;Bt>c;){if(0===f)break e;f--,u+=a[s++]<>>=mt,c-=mt,xt=0,m=3+(7&u),u>>>=3,c-=3}else{for(Bt=mt+7;Bt>c;){if(0===f)break e;f--,u+=a[s++]<>>=mt,c-=mt,xt=0,m=11+(127&u),u>>>=7,c-=7}if(i.have+m>i.nlen+i.ndist){e.msg="invalid bit length repeat",i.mode=ht;break}for(;m--;)i.lens[i.have++]=xt}}if(i.mode===ht)break;if(0===i.lens[256]){e.msg="invalid code -- missing end-of-block",i.mode=ht;break}if(i.lenbits=9,St={bits:i.lenbits},yt=p(y,i.lens,0,i.nlen,i.lencode,0,i.work,St),i.lenbits=St.bits,yt){e.msg="invalid literal/lengths set",i.mode=ht;break}if(i.distbits=6,i.distcode=i.distdyn,St={bits:i.distbits},yt=p(S,i.lens,i.nlen,i.ndist,i.distcode,0,i.work,St),i.distbits=St.bits,yt){e.msg="invalid distances set",i.mode=ht;break}if(i.mode=tt,t===Z)break e;case tt:i.mode=it;case it:if(f>=6&&l>=258){e.next_out=o,e.avail_out=l,e.next_in=s,e.avail_in=f,i.hold=u,i.bits=c,v(e,w),o=e.next_out,r=e.output,l=e.avail_out,s=e.next_in,a=e.input,f=e.avail_in,u=i.hold,c=i.bits,i.mode===G&&(i.back=-1);break}for(i.back=0;Et=i.lencode[u&(1<>>24,kt=Et>>>16&255,gt=65535&Et,!(c>=mt);){if(0===f)break e;f--,u+=a[s++]<>_t)],mt=Et>>>24,kt=Et>>>16&255,gt=65535&Et,!(c>=_t+mt);){if(0===f)break e;f--,u+=a[s++]<>>=_t,c-=_t,i.back+=_t}if(u>>>=mt,c-=mt,i.back+=mt,i.length=gt,0===kt){i.mode=ot;break}if(32&kt){i.back=-1,i.mode=G;break}if(64&kt){e.msg="invalid literal/length code",i.mode=ht;break}i.extra=15&kt,i.mode=nt;case nt:if(i.extra){for(Bt=i.extra;Bt>c;){if(0===f)break e;f--,u+=a[s++]<>>=i.extra,c-=i.extra,i.back+=i.extra}i.was=i.length,i.mode=at;case at:for(;Et=i.distcode[u&(1<>>24,kt=Et>>>16&255,gt=65535&Et,!(c>=mt);){if(0===f)break e;f--,u+=a[s++]<>_t)],mt=Et>>>24,kt=Et>>>16&255,gt=65535&Et,!(c>=_t+mt);){if(0===f)break e;f--,u+=a[s++]<>>=_t,c-=_t,i.back+=_t}if(u>>>=mt,c-=mt,i.back+=mt,64&kt){e.msg="invalid distance code",i.mode=ht;break}i.offset=gt,i.extra=15&kt,i.mode=rt;case rt:if(i.extra){for(Bt=i.extra;Bt>c;){if(0===f)break e;f--,u+=a[s++]<>>=i.extra,c-=i.extra,i.back+=i.extra}if(i.offset>i.dmax){e.msg="invalid distance too far back",i.mode=ht;break}i.mode=st;case st:if(0===l)break e;if(m=w-l,i.offset>m){if(m=i.offset-m,m>i.whave&&i.sane){e.msg="invalid distance too far back",i.mode=ht;break}m>i.wnext?(m-=i.wnext,bt=i.wsize-m):bt=i.wnext-m,m>i.length&&(m=i.length),wt=i.window}else wt=r,bt=o-i.offset,m=i.length;m>l&&(m=l),l-=m,i.length-=m;do r[o++]=wt[bt++];while(--m);0===i.length&&(i.mode=it);break;case ot:if(0===l)break e;r[o++]=i.length,l--,i.mode=it;break;case ft:if(i.wrap){for(;32>c;){if(0===f)break e;f--,u|=a[s++]<c;){if(0===f)break e;f--,u+=a[s++]<=z;z++)M[z]=0;for(R=0;b>R;R++)M[t[c+R]]++;for(I=A,N=n;N>=1&&0===M[N];N--);if(I>N&&(I=N),0===N)return w[m++]=20971520,w[m++]=20971520,g.bits=1,0;for(C=1;N>C&&0===M[C];C++);for(C>I&&(I=C),F=1,z=1;n>=z;z++)if(F<<=1,F-=M[z],0>F)return-1;if(F>0&&(e===s||1!==N))return-1;for(K[1]=0,z=1;n>z;z++)K[z+1]=K[z]+M[z];for(R=0;b>R;R++)0!==t[c+R]&&(k[K[t[c+R]]++]=R);if(e===s?(L=j=k,S=19):e===o?(L=l,H-=257,j=d,P-=257,S=256):(L=h,j=u,S=-1),U=0,R=0,z=C,y=m,O=I,T=0,p=-1,D=1<a||e===f&&D>r)return 1;for(var q=0;;){q++,B=z-T,k[R]S?(E=j[P+k[R]],Z=L[H+k[R]]):(E=96,Z=0),_=1<>T)+v]=B<<24|E<<16|Z|0;while(0!==v);for(_=1<>=1;if(0!==_?(U&=_-1,U+=_):U=0,R++,0===--M[z]){if(z===N)break;z=t[c+k[R]]}if(z>I&&(U&x)!==p){for(0===T&&(T=I),y+=C,O=z-T,F=1<O+T&&(F-=M[O+T],!(0>=F));)O++,F<<=1;if(D+=1<a||e===f&&D>r)return 1;p=U&x,w[p]=I<<24|O<<16|y-m|0}}return 0!==U&&(w[y+U]=z-T<<24|64<<16|0),g.bits=I,0}},{"../utils/common":2}],11:[function(e,t){"use strict";t.exports={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"}},{}],12:[function(e,t){"use strict";function i(){this.input=null,this.next_in=0,this.avail_in=0,this.total_in=0,this.output=null,this.next_out=0,this.avail_out=0,this.total_out=0,this.msg="",this.state=null,this.data_type=2,this.adler=0}t.exports=i},{}]},{},[1])(1)}); \ No newline at end of file diff --git a/modules/pako/package.json b/modules/pako/package.json deleted file mode 100644 index 76f2c229..00000000 --- a/modules/pako/package.json +++ /dev/null @@ -1,34 +0,0 @@ -{ - "name" : "pako", - "description" : "zlib port to javascript - fast, modularized, with browser support", - "version" : "0.2.5", - "keywords" : [ "zlib", "deflate", "inflate", "gzip" ], - "homepage" : "https://github.com/nodeca/pako", - - "contributors" : [ "Andrei Tuputcyn (https://github.com/andr83)", - "Vitaly Puzrin (https://github.com/puzrin)" ], - - "bugs" : { "url": "https://github.com/nodeca/pako/issues" }, - "license" : { "type": "MIT", "url": "https://github.com/nodeca/pako/blob/master/LICENSE" }, - "repository" : { "type": "git", "url": "git://github.com/nodeca/pako.git" }, - - "main" : "./index.js", - - "devDependencies" : { - "mocha": "*", - "benchmark": "*", - "ansi": "*", - "browserify":"*", - "uglify-js": "*", - "jshint": "*", - "istanbul": "*", - "ndoc": "*", - "lodash": "*", - "async": "*", - - "grunt": "~0.4.4", - "grunt-cli": "~0.1.13", - "grunt-saucelabs": "~8.0.2", - "grunt-contrib-connect": "~0.7.1" - } -}