plantuml-encoder
Version:
PlantUML encoder for browsers and Node.js
1,521 lines (1,301 loc) • 110 kB
JavaScript
(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.plantumlEncoder = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
'use strict'
var pako = require('pako/lib/inflate.js')
module.exports = function (data) {
return pako.inflateRaw(data, { to: 'string' })
}
},{"pako/lib/inflate.js":4}],2:[function(require,module,exports){
'use strict'
// Reverse of
// http://plantuml.sourceforge.net/codejavascript2.html
// It is described as being "a transformation close to base64"
// The code has been slightly modified to pass linters
function decode6bit (cc) {
var c = cc.charCodeAt(0)
if (cc === '_') return 63
if (cc === '-') return 62
if (c >= 97) return c - 61 // - 97 + 26 + 10
if (c >= 65) return c - 55 // - 65 + 10
if (c >= 48) return c - 48
return '?'
}
function extract3bytes (data) {
var c1 = decode6bit(data[0])
var c2 = decode6bit(data[1])
var c3 = decode6bit(data[2])
var c4 = decode6bit(data[3])
var b1 = c1 << 2 | (c2 >> 4) & 0x3F
var b2 = (c2 << 4) & 0xF0 | (c3 >> 2) & 0xF
var b3 = (c3 << 6) & 0xC0 | c4 & 0x3F
return [b1, b2, b3]
}
module.exports = function (data) {
var r = ''
var i = 0
for (i = 0; i < data.length; i += 4) {
var t = extract3bytes(data.substring(i, i + 4))
r = r + String.fromCharCode(t[0])
r = r + String.fromCharCode(t[1])
r = r + String.fromCharCode(t[2])
}
return r
}
},{}],3:[function(require,module,exports){
'use strict'
var inflate = require('./inflate')
var decode64 = require('./decode64')
module.exports.decode = function (encoded) {
var deflated = decode64(encoded)
return inflate(deflated)
}
},{"./decode64":2,"./inflate":1}],4:[function(require,module,exports){
'use strict';
var zlib_inflate = require('./zlib/inflate');
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 overridden.
**/
/**
* 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`
* - `dictionary`
*
* [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);
* ```
**/
function Inflate(options) {
if (!(this instanceof Inflate)) return new Inflate(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);
// Setup dictionary
if (opt.dictionary) {
// Convert data if needed
if (typeof opt.dictionary === 'string') {
opt.dictionary = strings.string2buf(opt.dictionary);
} else if (toString.call(opt.dictionary) === '[object ArrayBuffer]') {
opt.dictionary = new Uint8Array(opt.dictionary);
}
if (opt.raw) { //In raw mode we need to set the dictionary early
status = zlib_inflate.inflateSetDictionary(this.strm, opt.dictionary);
if (status !== c.Z_OK) {
throw new Error(msg[status]);
}
}
}
}
/**
* 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` means 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 dictionary = this.options.dictionary;
var status, _mode;
var next_out_utf8, tail, utf8str;
// Flag to properly process Z_BUF_ERROR on testing inflate call
// when we check that all output data was flushed.
var allowBufError = false;
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_NEED_DICT && dictionary) {
status = zlib_inflate.inflateSetDictionary(this.strm, dictionary);
}
if (status === c.Z_BUF_ERROR && allowBufError === true) {
status = c.Z_OK;
allowBufError = false;
}
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));
}
}
}
// When no more input data, we should check that internal inflate buffers
// are flushed. The only way to do it when avail_out = 0 - run one more
// inflate pass. But if output data not exists, inflate return Z_BUF_ERROR.
// Here we set flag to process this error properly.
//
// NOTE. Deflate does not return error in this case and does not needs such
// logic.
if (strm.avail_in === 0 && strm.avail_out === 0) {
allowBufError = true;
}
} while ((strm.avail_in > 0 || strm.avail_out === 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): output 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 aligned 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 || msg[inflator.err]; }
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":5,"./utils/strings":6,"./zlib/constants":8,"./zlib/gzheader":10,"./zlib/inflate":12,"./zlib/messages":14,"./zlib/zstream":15}],5:[function(require,module,exports){
'use strict';
var TYPED_OK = (typeof Uint8Array !== 'undefined') &&
(typeof Uint16Array !== 'undefined') &&
(typeof Int32Array !== 'undefined');
function _has(obj, key) {
return Object.prototype.hasOwnProperty.call(obj, key);
}
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 (_has(source, 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);
},{}],6:[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 Safari
//
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) {
// On Chrome, the arguments in a function call that are allowed is `65534`.
// If the length of the buffer is smaller than that, we can use this optimization,
// otherwise we will take a slower path.
if (len < 65534) {
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--; }
// 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 buffer is too small,
// return max too.
if (pos === 0) { return max; }
return (pos + _utf8len[buf[pos]] > max) ? pos : max;
};
},{"./common":5}],7:[function(require,module,exports){
'use strict';
// Note: adler32 takes 12% for level 0 and 2% for level 6.
// It isn't worth it to make additional optimizations as in original.
// Small size is preferable.
// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would be
// appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.
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;
},{}],8:[function(require,module,exports){
'use strict';
// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would be
// appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.
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
};
},{}],9:[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.
// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would be
// appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.
// 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 ^= -1;
for (var i = pos; i < end; i++) {
crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];
}
return (crc ^ (-1)); // >>> 0;
}
module.exports = crc32;
},{}],10:[function(require,module,exports){
'use strict';
// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would be
// appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.
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';
// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would be
// appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.
// 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 */
// Use `s_window` instead `window`, avoid conflict with instrumentation tools
var s_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;
s_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 defaults,
// 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 = s_window;
if (wnext === 0) { /* very common case */
from += wsize - op;
if (op < len) { /* some from window */
len -= op;
do {
output[_out++] = s_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++] = s_window[from++];
} while (--op);
from = 0;
if (wnext < len) { /* some from start of window */
op = wnext;
len -= op;
do {
output[_out++] = s_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++] = s_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';
// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would be
// appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.
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;