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- /* pako 1.0.6 nodeca/pako */(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.pako = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);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){
- '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);
-
- },{}],2:[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) {
- // 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--; }
-
- // 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":1}],3:[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;
-
- },{}],4:[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
- };
-
- },{}],5:[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;
-
- },{}],6:[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;
-
- },{}],7:[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;
- };
-
- },{}],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.
-
- 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 convenient 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;
- 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 defaults,
- // 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 '|' instead 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;
- }
-
- function inflateSetDictionary(strm, dictionary) {
- var dictLength = dictionary.length;
-
- var state;
- var dictid;
- var ret;
-
- /* check state */
- if (!strm /* == Z_NULL */ || !strm.state /* == Z_NULL */) { return Z_STREAM_ERROR; }
- state = strm.state;
-
- if (state.wrap !== 0 && state.mode !== DICT) {
- return Z_STREAM_ERROR;
- }
-
- /* check for correct dictionary identifier */
- if (state.mode === DICT) {
- dictid = 1; /* adler32(0, null, 0)*/
- /* dictid = adler32(dictid, dictionary, dictLength); */
- dictid = adler32(dictid, dictionary, dictLength, 0);
- if (dictid !== state.check) {
- return Z_DATA_ERROR;
- }
- }
- /* copy dictionary to window using updatewindow(), which will amend the
- existing dictionary if appropriate */
- ret = updatewindow(strm, dictionary, dictLength, dictLength);
- if (ret) {
- state.mode = MEM;
- return Z_MEM_ERROR;
- }
- state.havedict = 1;
- // Tracev((stderr, "inflate: dictionary set\n"));
- 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.inflateSetDictionary = inflateSetDictionary;
- exports.inflateInfo = 'pako inflate (from Nodeca project)';
-
- /* Not implemented
- exports.inflateCopy = inflateCopy;
- exports.inflateGetDictionary = inflateGetDictionary;
- exports.inflateMark = inflateMark;
- exports.inflatePrime = inflatePrime;
- exports.inflateSync = inflateSync;
- exports.inflateSyncPoint = inflateSyncPoint;
- exports.inflateUndermine = inflateUndermine;
- */
-
- },{"../utils/common":1,"./adler32":3,"./crc32":5,"./inffast":7,"./inftrees":9}],9:[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 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;
- }
-
- /* process all codes and make table entries */
- for (;;) {
- /* 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":1}],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.
-
- 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) */
- };
-
- },{}],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.
-
- 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;
-
- },{}],"/lib/inflate.js":[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);
- }
-
- /**
- * 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;
- var dict;
-
- // 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) {
- // Convert data if needed
- if (typeof dictionary === 'string') {
- dict = strings.string2buf(dictionary);
- } else if (toString.call(dictionary) === '[object ArrayBuffer]') {
- dict = new Uint8Array(dictionary);
- } else {
- dict = dictionary;
- }
-
- status = zlib_inflate.inflateSetDictionary(this.strm, dict);
-
- }
-
- 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":1,"./utils/strings":2,"./zlib/constants":4,"./zlib/gzheader":6,"./zlib/inflate":8,"./zlib/messages":10,"./zlib/zstream":11}]},{},[])("/lib/inflate.js")
- });
|