From 0f0ed005e54b9a7fdf4ddecd2b723c00644e0a9b Mon Sep 17 00:00:00 2001
From: Guillermo <gui@mit.edu>
Date: Fri, 26 Jun 2015 15:42:19 -0700
Subject: [PATCH] browserified worker.js

---
 example.htm                      |    2 +-
 Tesseract.js => lib/Tesseract.js |    2 +-
 {worker_src => lib}/madeline.js  |    0
 lib/worker.js                    | 6735 ++++++++++++++++++++++++++++++
 worker_src/worker.js             |   52 +-
 5 files changed, 6763 insertions(+), 28 deletions(-)
 rename Tesseract.js => lib/Tesseract.js (93%)
 rename {worker_src => lib}/madeline.js (100%)
 create mode 100644 lib/worker.js

diff --git a/example.htm b/example.htm
index 8d73b46..c9ed692 100644
--- a/example.htm
+++ b/example.htm
@@ -1,5 +1,5 @@
 <canvas id="c"></canvas>
-<script type="text/javascript" src="./Tesseract.js"></script>
+<script type="text/javascript" src="./lib/Tesseract.js"></script>
 <script type="text/javascript">
 	var canvas = document.getElementById('c')
 	canvas.width = 400
diff --git a/Tesseract.js b/lib/Tesseract.js
similarity index 93%
rename from Tesseract.js
rename to lib/Tesseract.js
index ed73f6d..fa52f7c 100644
--- a/Tesseract.js
+++ b/lib/Tesseract.js
@@ -34,7 +34,7 @@ Tesseract.recognize = function(image, options, callback){
 	}
 	if(image.getImageData) image = image.getImageData(0, 0, image.canvas.width, image.canvas.height);		
 
-	var worker = new Worker('./worker.js')
+	var worker = new Worker('https://cdn.rawgit.com/naptha/tesseract.js/master/lib/worker.js')
 
 	if(typeof callback === "function"){
 		worker.onmessage = function(e){
diff --git a/worker_src/madeline.js b/lib/madeline.js
similarity index 100%
rename from worker_src/madeline.js
rename to lib/madeline.js
diff --git a/lib/worker.js b/lib/worker.js
new file mode 100644
index 0000000..726e987
--- /dev/null
+++ b/lib/worker.js
@@ -0,0 +1,6735 @@
+(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);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+// Top level file is just a mixin of submodules & constants
+'use strict';
+
+var assign    = require('./lib/utils/common').assign;
+
+var deflate   = require('./lib/deflate');
+var inflate   = require('./lib/inflate');
+var constants = require('./lib/zlib/constants');
+
+var pako = {};
+
+assign(pako, deflate, inflate, constants);
+
+module.exports = pako;
+
+},{"./lib/deflate":2,"./lib/inflate":3,"./lib/utils/common":4,"./lib/zlib/constants":7}],2:[function(require,module,exports){
+'use strict';
+
+
+var zlib_deflate = require('./zlib/deflate.js');
+var utils = require('./utils/common');
+var strings = require('./utils/strings');
+var msg = require('./zlib/messages');
+var zstream = require('./zlib/zstream');
+
+var toString = Object.prototype.toString;
+
+/* Public constants ==========================================================*/
+/* ===========================================================================*/
+
+var Z_NO_FLUSH      = 0;
+var Z_FINISH        = 4;
+
+var Z_OK            = 0;
+var Z_STREAM_END    = 1;
+var Z_SYNC_FLUSH    = 2;
+
+var Z_DEFAULT_COMPRESSION = -1;
+
+var Z_DEFAULT_STRATEGY    = 0;
+
+var Z_DEFLATED  = 8;
+
+/* ===========================================================================*/
+
+
+/**
+ * class Deflate
+ *
+ * Generic JS-style wrapper for zlib calls. If you don't need
+ * streaming behaviour - use more simple functions: [[deflate]],
+ * [[deflateRaw]] and [[gzip]].
+ **/
+
+/* internal
+ * Deflate.chunks -> 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)  or if you
+ * push a chunk with explicit flush (call [[Deflate#push]] with
+ * `Z_SYNC_FLUSH` 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|ArrayBuffer|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 will flush internal pending buffers and call
+ * [[Deflate#onEnd]]. For interim explicit flushes (without ending the stream) you
+ * can use mode Z_SYNC_FLUSH, keeping the compression context.
+ *
+ * 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 if (toString.call(data) === '[object ArrayBuffer]') {
+    strm.input = new Uint8Array(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 || _mode === Z_SYNC_FLUSH))) {
+      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;
+  }
+
+  // callback interim results if Z_SYNC_FLUSH.
+  if (_mode === Z_SYNC_FLUSH) {
+    this.onEnd(Z_OK);
+    strm.avail_out = 0;
+    return true;
+  }
+
+  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 the input stream is
+ * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH)
+ * or if an error happened. 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(require,module,exports){
+'use strict';
+
+
+var zlib_inflate = require('./zlib/inflate.js');
+var utils = require('./utils/common');
+var strings = require('./utils/strings');
+var c = require('./zlib/constants');
+var msg = require('./zlib/messages');
+var zstream = require('./zlib/zstream');
+var gzheader = require('./zlib/gzheader');
+
+var toString = Object.prototype.toString;
+
+/**
+ * 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) or if you
+ * push a chunk with explicit flush (call [[Inflate#push]] with
+ * `Z_SYNC_FLUSH` 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|ArrayBuffer|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 will flush internal pending buffers and call
+ * [[Inflate#onEnd]]. For interim explicit flushes (without ending the stream) you
+ * can use mode Z_SYNC_FLUSH, keeping the decompression context.
+ *
+ * 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 if (toString.call(data) === '[object ArrayBuffer]') {
+    strm.input = new Uint8Array(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 || _mode === c.Z_SYNC_FLUSH))) {
+
+        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;
+  }
+
+  // callback interim results if Z_SYNC_FLUSH.
+  if (_mode === c.Z_SYNC_FLUSH) {
+    this.onEnd(c.Z_OK);
+    strm.avail_out = 0;
+    return true;
+  }
+
+  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 either after you tell inflate that the input stream is
+ * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH)
+ * or if an error happened. 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(require,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<len; i++) {
+      dest[dest_offs + i] = src[src_offs + i];
+    }
+  },
+  // Join array of chunks to single array.
+  flattenChunks: function(chunks) {
+    var i, l, len, pos, chunk, result;
+
+    // calculate data length
+    len = 0;
+    for (i=0, l=chunks.length; i<l; i++) {
+      len += chunks[i].length;
+    }
+
+    // join chunks
+    result = new Uint8Array(len);
+    pos = 0;
+    for (i=0, l=chunks.length; i<l; i++) {
+      chunk = chunks[i];
+      result.set(chunk, pos);
+      pos += chunk.length;
+    }
+
+    return result;
+  }
+};
+
+var fnUntyped = {
+  arraySet: function (dest, src, src_offs, len, dest_offs) {
+    for (var i=0; i<len; i++) {
+      dest[dest_offs + i] = src[src_offs + i];
+    }
+  },
+  // Join array of chunks to single array.
+  flattenChunks: function(chunks) {
+    return [].concat.apply([], chunks);
+  }
+};
+
+
+// Enable/Disable typed arrays use, for testing
+//
+exports.setTyped = function (on) {
+  if (on) {
+    exports.Buf8  = Uint8Array;
+    exports.Buf16 = Uint16Array;
+    exports.Buf32 = Int32Array;
+    exports.assign(exports, fnTyped);
+  } else {
+    exports.Buf8  = Array;
+    exports.Buf16 = Array;
+    exports.Buf32 = Array;
+    exports.assign(exports, fnUntyped);
+  }
+};
+
+exports.setTyped(TYPED_OK);
+
+},{}],5:[function(require,module,exports){
+// String encode/decode helpers
+'use strict';
+
+
+var utils = require('./common');
+
+
+// Quick check if we can use fast array to bin string conversion
+//
+// - apply(Array) can fail on Android 2.2
+// - apply(Uint8Array) can fail on iOS 5.1 Safary
+//
+var STR_APPLY_OK = true;
+var STR_APPLY_UIA_OK = true;
+
+try { String.fromCharCode.apply(null, [0]); } catch(__) { STR_APPLY_OK = false; }
+try { String.fromCharCode.apply(null, new Uint8Array(1)); } catch(__) { STR_APPLY_UIA_OK = false; }
+
+
+// Table with utf8 lengths (calculated by first byte of sequence)
+// Note, that 5 & 6-byte values and some 4-byte values can not be represented in JS,
+// because max possible codepoint is 0x10ffff
+var _utf8len = new utils.Buf8(256);
+for (var q=0; q<256; q++) {
+  _utf8len[q] = (q >= 252 ? 6 : q >= 248 ? 5 : q >= 240 ? 4 : q >= 224 ? 3 : q >= 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<len;) {
+    c = buf[i++];
+    // quick process ascii
+    if (c < 0x80) { utf16buf[out++] = c; continue; }
+
+    c_len = _utf8len[c];
+    // skip 5 & 6 byte codes
+    if (c_len > 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(require,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(require,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(require,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(require,module,exports){
+'use strict';
+
+var utils   = require('../utils/common');
+var trees   = require('./trees');
+var adler32 = require('./adler32');
+var crc32   = require('./crc32');
+var msg   = require('./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(require,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(require,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(require,module,exports){
+'use strict';
+
+
+var utils = require('../utils/common');
+var adler32 = require('./adler32');
+var crc32   = require('./crc32');
+var inflate_fast = require('./inffast');
+var inflate_table = require('./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(require,module,exports){
+'use strict';
+
+
+var utils = require('../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(require,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(require,module,exports){
+'use strict';
+
+
+var utils = require('../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<<MAX_BITS)-1,
+  //        "inconsistent bit counts");
+  //Tracev((stderr,"\ngen_codes: max_code %d ", max_code));
+
+  for (n = 0;  n <= max_code; n++) {
+    var len = tree[n*2 + 1]/*.Len*/;
+    if (len === 0) { continue; }
+    /* Now reverse the bits */
+    tree[n*2]/*.Code*/ = bi_reverse(next_code[len]++, len);
+
+    //Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
+    //     n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));
+  }
+}
+
+
+/* ===========================================================================
+ * Initialize the various 'constant' tables.
+ */
+function tr_static_init() {
+  var n;        /* iterates over tree elements */
+  var bits;     /* bit counter */
+  var length;   /* length value */
+  var code;     /* code value */
+  var dist;     /* distance index */
+  var bl_count = new Array(MAX_BITS+1);
+  /* number of codes at each bit length for an optimal tree */
+
+  // do check in _tr_init()
+  //if (static_init_done) return;
+
+  /* For some embedded targets, global variables are not initialized: */
+/*#ifdef NO_INIT_GLOBAL_POINTERS
+  static_l_desc.static_tree = static_ltree;
+  static_l_desc.extra_bits = extra_lbits;
+  static_d_desc.static_tree = static_dtree;
+  static_d_desc.extra_bits = extra_dbits;
+  static_bl_desc.extra_bits = extra_blbits;
+#endif*/
+
+  /* Initialize the mapping length (0..255) -> length code (0..28) */
+  length = 0;
+  for (code = 0; code < LENGTH_CODES-1; code++) {
+    base_length[code] = length;
+    for (n = 0; n < (1<<extra_lbits[code]); n++) {
+      _length_code[length++] = code;
+    }
+  }
+  //Assert (length == 256, "tr_static_init: length != 256");
+  /* Note that the length 255 (match length 258) can be represented
+   * in two different ways: code 284 + 5 bits or code 285, so we
+   * overwrite length_code[255] to use the best encoding:
+   */
+  _length_code[length-1] = code;
+
+  /* Initialize the mapping dist (0..32K) -> dist code (0..29) */
+  dist = 0;
+  for (code = 0 ; code < 16; code++) {
+    base_dist[code] = dist;
+    for (n = 0; n < (1<<extra_dbits[code]); n++) {
+      _dist_code[dist++] = code;
+    }
+  }
+  //Assert (dist == 256, "tr_static_init: dist != 256");
+  dist >>= 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(require,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 */
+  this.data_type = 2/*Z_UNKNOWN*/;
+  /* adler32 value of the uncompressed data */
+  this.adler = 0;
+}
+
+module.exports = ZStream;
+
+},{}],17:[function(require,module,exports){
+importScripts('madeline.js')
+
+var filesizes = {
+	"afr": 1079573,
+	"ara": 1701536,
+	"aze": 1420865,
+	"bel": 1276820,
+	"ben": 6772012,
+	"bul": 1605615,
+	"cat": 1652368,
+	"ces": 1035441,
+	"chi_sim": 17710414,
+	"chi_tra": 24717749,
+	"chr": 320649,
+	"dan-frak": 677656,
+	"dan": 1972936,
+	"deu-frak": 822644,
+	"deu": 991656,
+	"ell": 859719,
+	"eng": 9453554,
+	"enm": 619254,
+	"epo": 1241212,
+	"equ": 821130,
+	"est": 1905040,
+	"eus": 1641190,
+	"fin": 979418,
+	"fra": 1376221,
+	"frk": 5912963,
+	"frm": 5147082,
+	"glg": 1674938,
+	"grc": 3012615,
+	"heb": 1051501,
+	"hin": 6590065,
+	"hrv": 1926995,
+	"hun": 3074473,
+	"ind": 1874776,
+	"isl": 1634041,
+	"ita": 948593,
+	"ita_old": 3436571,
+	"jpn": 13507168,
+	"kan": 4390317,
+	"kor": 5353098,
+	"lav": 1843944,
+	"lit": 1779240,
+	"mal": 5966263,
+	"meme": 88453,
+	"mkd": 1163087,
+	"mlt": 1463001,
+	"msa": 1665427,
+	"nld": 1134708,
+	"nor": 2191610,
+	"osd": 4274649,
+	"pol": 7024662,
+	"por": 909359,
+	"ron": 915680,
+	"rus": 5969957,
+	"slk-frak": 289885,
+	"slk": 2217342,
+	"slv": 1611338,
+	"spa": 883170,
+	"spa_old": 5647453,
+	"sqi": 1667041,
+	"srp": 1770244,
+	"swa": 757916,
+	"swe": 2451917,
+	"tam": 3498763,
+	"tel": 5795246,
+	"tgl": 1496256,
+	"tha": 3811136,
+	"tur": 3563264,
+	"ukr": 937566,
+	"vie": 2195922
+}
+
+var pako = require('pako')
+
+var recognize = (function createTesseractInstance(){
+
+	var Module = Tesseract304({
+		TOTAL_MEMORY: 90e6,
+		TesseractProgress: function(percent){
+			console.log('recognized',percent+'%')
+		}
+	})
+
+	var base = new Module.TessBaseAPI()
+	var loaded_langs = []
+	var loadLanguage = function(lang, cb){ // NodeJS style callback
+		if(loaded_langs.indexOf(lang) != -1){
+			cb(null, lang)		
+		}
+		else{
+			Module.FS_createPath("/","tessdata",true,true)
+			var xhr = new XMLHttpRequest();
+			xhr.open('GET', 'https://cdn.rawgit.com/naptha/tessdata/gh-pages/3.02/'+lang+'.traineddata.gz', true);
+			xhr.responseType = 'arraybuffer';
+			xhr.onerror = function(){ cb(xhr, null) }
+			xhr.onprogress = function(e){console.log('loading',lang,'language model:',Math.round(e.loaded/filesizes[lang]*100)+'%')}
+			xhr.onload = function(){
+				if (xhr.status == 200 || (xhr.status == 0 && xhr.response)) {
+					console.log('unzipping language model...')
+					var data = new Uint8Array(pako.deflate(new Uint8Array(xhr.response)))
+					console.log(lang +".traineddata", 'sucessfully unzipped')
+					Module.FS_createDataFile('tessdata', lang +".traineddata", data, true, false);
+					loaded_langs.push(lang)
+					cb(null, lang)
+				} else cb(xhr, null);
+			}
+			xhr.send(null)
+		}
+	}
+
+	function DumpLiterallyEverything(){
+			var ri = base.GetIterator();
+			var blocks = [];
+			var block, para, textline, word, symbol;
+
+			function enumToString(value, prefix){
+				return (Object.keys(Module)
+					.filter(function(e){ return e.startsWith(prefix + '_') })
+					.filter(function(e){ return Module[e] === value })
+					.map(function(e){ return e.slice(prefix.length + 1) })[0])
+			}
+
+			do {
+				if(ri.IsAtBeginningOf(Module.RIL_BLOCK)){
+					var poly = ri.BlockPolygon();
+					var polygon = null;
+					// BlockPolygon() returns null when automatic page segmentation is off
+					if(Module.getPointer(poly) > 0){
+						var n = poly.get_n(),
+							px = poly.get_x(),
+							py = poly.get_y(),
+							polygon = [];
+						for(var i = 0; i < n; i++){
+							polygon.push([px.getValue(i), py.getValue(i)]);
+						}
+						Module._ptaDestroy(Module.getPointer(poly));	
+					}
+					
+					block = {
+						paragraphs: [],
+
+						text: ri.GetUTF8Text(Module.RIL_BLOCK),
+						confidence: ri.Confidence(Module.RIL_BLOCK),
+						baseline: ri.getBaseline(Module.RIL_BLOCK),
+						bbox: ri.getBoundingBox(Module.RIL_BLOCK),
+
+						blocktype: enumToString(ri.BlockType(), 'PT'),
+						polygon: polygon
+					}
+					blocks.push(block)
+				}
+				if(ri.IsAtBeginningOf(Module.RIL_PARA)){
+					para = {
+						lines: [],
+
+						text: ri.GetUTF8Text(Module.RIL_PARA),
+						confidence: ri.Confidence(Module.RIL_PARA),
+						baseline: ri.getBaseline(Module.RIL_PARA),
+						bbox: ri.getBoundingBox(Module.RIL_PARA),
+
+						is_ltr: !!ri.ParagraphIsLtr()
+					}
+					block.paragraphs.push(para)
+				}
+				if(ri.IsAtBeginningOf(Module.RIL_TEXTLINE)){
+					textline = {
+						words: [],
+
+						text: ri.GetUTF8Text(Module.RIL_TEXTLINE),
+						confidence: ri.Confidence(Module.RIL_TEXTLINE),
+						baseline: ri.getBaseline(Module.RIL_TEXTLINE),
+						bbox: ri.getBoundingBox(Module.RIL_TEXTLINE)
+					}
+					para.lines.push(textline)
+				}
+				if(ri.IsAtBeginningOf(Module.RIL_WORD)){
+					var fontInfo = ri.getWordFontAttributes(),
+						wordDir = ri.WordDirection();
+					word = {
+						symbols: [],
+						choices: [],
+
+						text: ri.GetUTF8Text(Module.RIL_WORD),
+						confidence: ri.Confidence(Module.RIL_WORD),
+						baseline: ri.getBaseline(Module.RIL_WORD),
+						bbox: ri.getBoundingBox(Module.RIL_WORD),
+
+						is_numeric: !!ri.WordIsNumeric(),
+						in_dictionary: !!ri.WordIsFromDictionary(),
+						direction: enumToString(wordDir, 'DIR'),
+						language: ri.WordRecognitionLanguage(),
+
+						is_bold: fontInfo.is_bold,
+						is_italic: fontInfo.is_italic,
+						is_underlined: fontInfo.is_underlined,
+						is_monospace: fontInfo.is_monospace,
+						is_serif: fontInfo.is_serif,
+						is_smallcaps: fontInfo.is_smallcaps,
+						font_size: fontInfo.pointsize,
+						font_id: fontInfo.font_id,
+						font_name: fontInfo.font_name,
+					}
+					var wc = new Module.WordChoiceIterator(ri);
+					do {
+						word.choices.push({
+							text: wc.GetUTF8Text(),
+							confidence: wc.Confidence()
+						})
+					} while (wc.Next());
+					Module.destroy(wc)
+					textline.words.push(word)
+				}
+				
+				var image = null;
+				// var pix = ri.GetBinaryImage(Module.RIL_SYMBOL)
+				// var image = pix2array(pix);
+				// // for some reason it seems that things stop working if you destroy pics
+				// Module._pixDestroy(Module.getPointer(pix));
+
+				symbol = {
+					choices: [],
+					image: image,
+
+					text: ri.GetUTF8Text(Module.RIL_SYMBOL),
+					confidence: ri.Confidence(Module.RIL_SYMBOL),
+					baseline: ri.getBaseline(Module.RIL_SYMBOL),
+					bbox: ri.getBoundingBox(Module.RIL_SYMBOL),
+
+					is_superscript: !!ri.SymbolIsSuperscript(),
+					is_subscript: !!ri.SymbolIsSubscript(),
+					is_dropcap: !!ri.SymbolIsDropcap(),
+				}
+				word.symbols.push(symbol)
+				var ci = new Module.ChoiceIterator(ri);
+				do {
+					symbol.choices.push({
+						text: ci.GetUTF8Text(),
+						confidence: ci.Confidence()
+					})
+				} while (ci.Next());
+				Module.destroy(ci)
+			} while (ri.Next(Module.RIL_SYMBOL));
+			Module.destroy(ri)
+
+			return {
+				text: base.GetUTF8Text(),
+				html: base.GetHOCRText(),
+
+				confidence: base.MeanTextConf(),
+
+				blocks: blocks,
+
+				psm: enumToString(base.GetPageSegMode(), 'PSM'),
+				oem: enumToString(base.oem(), 'OEM'),
+				version: base.Version(),
+			}
+	}
+
+	function recognize(image, lang, options,cb){
+		var width, height;
+		if(image.data){
+			var src       = image.data;
+			width     	  = image.width, height = image.height;
+			var dst       = new Uint8Array(width * height);
+			var srcLength = src.length | 0, srcLength_16 = (srcLength - 16) | 0;
+
+			var coeff_r = 4899, coeff_g = 9617, coeff_b = 1868;
+
+			for (var i = 0, j = 0; i <= srcLength_16; i += 16, j += 4) {
+				// convert to grayscale 4 pixels at a time;
+				// add 8192 = 1<<13 so for int n, float k >= .5,  ((n + k)*(1<<14) >> 14) = 1 + ((n)*(1<<14) >> 14)
+				dst[j]     = src[i+3] //(((src[i] * coeff_r + src[i+1] * coeff_g + src[i+2] * coeff_b + 8192) >> 14) * src[i+3]) >> 8 + 255 - src[i+3];
+				dst[j + 1] = src[i+4+3]//(((src[i+4] * coeff_r + src[i+5] * coeff_g + src[i+6] * coeff_b + 8192) >> 14) * src[i+3]) >> 8 + 255 - src[i+3];
+				dst[j + 2] = src[i+8+3]//(((src[i+8] * coeff_r + src[i+9] * coeff_g + src[i+10] * coeff_b + 8192) >> 14) * src[i+3]) >> 8 + 255 - src[i+3];
+				dst[j + 3] = src[i+12+3]//(((src[i+12] * coeff_r + src[i+13] * coeff_g + src[i+14] * coeff_b + 8192) >> 14) * src[i+3]) >> 8 + 255 - src[i+3];
+			}
+			for (; i < srcLength; i += 4, ++j) //finish up
+				dst[j] = (src[i] * coeff_r + src[i+1] * coeff_g + src[i+2] * coeff_b + 8192) >> 14;
+			
+			image = dst;
+			// for(var i = 0; i < image.length; i++) image[i] = image[i] > 128;
+		}
+		else {
+			throw 'Expected ImageData'
+		}
+		var ptr = Module.allocate(image, 'i8', Module.ALLOC_NORMAL);
+		
+		loadLanguage(lang, function(err, result){
+			
+			if(err){
+				console.error("error loading", lang);
+				cb(err, null)
+			}
+			base.Init(null, lang)
+			for (var option in options) {
+			    if (options.hasOwnProperty(option)) {
+			        base.SetVariable(option, options[option]);
+			        console.log('setting', option, '=', options[option]);
+			    }
+			}
+
+
+			base.SetImage(Module.wrapPointer(ptr), width, height, 1, width)
+			base.SetRectangle(0, 0, width, height)
+			base.GetUTF8Text()
+			var everything = DumpLiterallyEverything()
+			base.End();
+			Module._free(ptr); 
+			cb(null, everything)
+		})
+	}
+
+	// base._simple = _simple
+	return recognize
+})()
+
+onmessage = function(e) {
+
+	recognize(e.data.image, e.data.lang, e.data.options, function(err, result){
+		postMessage({err:err, result: result})	
+	})
+}
+},{"pako":1}]},{},[17]);
diff --git a/worker_src/worker.js b/worker_src/worker.js
index a67b18f..cef2b28 100644
--- a/worker_src/worker.js
+++ b/worker_src/worker.js
@@ -72,6 +72,8 @@ var filesizes = {
 	"vie": 2195922
 }
 
+var pako = require('pako')
+
 var recognize = (function createTesseractInstance(){
 
 	var Module = Tesseract304({
@@ -83,33 +85,30 @@ var recognize = (function createTesseractInstance(){
 
 	var base = new Module.TessBaseAPI()
 	var loaded_langs = []
-	var loadLanguage = (function(){
-
-		return (function loadLanguage(lang, cb){ // NodeJS style callback
-			if(loaded_langs.indexOf(lang) != -1){
-				cb(null, lang)		
-			}
-			else{
-				Module.FS_createPath("/","tessdata",true,true)
-				var xhr = new XMLHttpRequest();
-				xhr.open('GET', 'https://cdn.rawgit.com/naptha/tessdata/gh-pages/3.02/'+lang+'.traineddata.gz', true);
-				xhr.responseType = 'arraybuffer';
-				xhr.onerror = function(){ cb(xhr, null) }
-				xhr.onprogress = function(e){console.log('loading',lang,'language model:',Math.round(e.loaded/filesizes[lang]*100)+'%')}
-				xhr.onload = function(){
-					if (xhr.status == 200 || (xhr.status == 0 && xhr.response)) {
-						console.log('unzipping language model...')
-						var data = new Uint8Array(unzip(new Uint8Array(xhr.response)))
-						console.log(lang +".traineddata", 'sucessfully unzipped')
-						Module.FS_createDataFile('tessdata', lang +".traineddata", data, true, false);
-						loaded_langs.push(lang)
-						cb(null, lang)
-					} else cb(xhr, null);
-				}
-				xhr.send(null)
+	var loadLanguage = function(lang, cb){ // NodeJS style callback
+		if(loaded_langs.indexOf(lang) != -1){
+			cb(null, lang)		
+		}
+		else{
+			Module.FS_createPath("/","tessdata",true,true)
+			var xhr = new XMLHttpRequest();
+			xhr.open('GET', 'https://cdn.rawgit.com/naptha/tessdata/gh-pages/3.02/'+lang+'.traineddata.gz', true);
+			xhr.responseType = 'arraybuffer';
+			xhr.onerror = function(){ cb(xhr, null) }
+			xhr.onprogress = function(e){console.log('loading',lang,'language model:',Math.round(e.loaded/filesizes[lang]*100)+'%')}
+			xhr.onload = function(){
+				if (xhr.status == 200 || (xhr.status == 0 && xhr.response)) {
+					console.log('unzipping language model...')
+					var data = new Uint8Array(pako.deflate(new Uint8Array(xhr.response)))
+					console.log(lang +".traineddata", 'sucessfully unzipped')
+					Module.FS_createDataFile('tessdata', lang +".traineddata", data, true, false);
+					loaded_langs.push(lang)
+					cb(null, lang)
+				} else cb(xhr, null);
 			}
-		})
-	})()
+			xhr.send(null)
+		}
+	}
 
 	function DumpLiterallyEverything(){
 			var ri = base.GetIterator();
@@ -289,6 +288,7 @@ var recognize = (function createTesseractInstance(){
 		var ptr = Module.allocate(image, 'i8', Module.ALLOC_NORMAL);
 		
 		loadLanguage(lang, function(err, result){
+			
 			if(err){
 				console.error("error loading", lang);
 				cb(err, null)