| /* pako 1.0.10 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(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){ |
| 'use strict'; |
| |
| |
| var 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) { |
| // On Chrome, the arguments in a function call that are allowed is `65534`. |
| // If the length of the buffer is smaller than that, we can use this optimization, |
| // otherwise we will take a slower path. |
| if (len < 65534) { |
| if ((buf.subarray && STR_APPLY_UIA_OK) || (!buf.subarray && STR_APPLY_OK)) { |
| return String.fromCharCode.apply(null, utils.shrinkBuf(buf, len)); |
| } |
| } |
| |
| var result = ''; |
| for (var i = 0; i < len; i++) { |
| result += String.fromCharCode(buf[i]); |
| } |
| return result; |
| } |
| |
| |
| // Convert byte array to binary string |
| exports.buf2binstring = function (buf) { |
| return buf2binstring(buf, buf.length); |
| }; |
| |
| |
| // Convert binary string (typed, when possible) |
| exports.binstring2buf = function (str) { |
| var buf = new utils.Buf8(str.length); |
| for (var i = 0, len = buf.length; i < len; i++) { |
| buf[i] = str.charCodeAt(i); |
| } |
| return buf; |
| }; |
| |
| |
| // convert array to string |
| exports.buf2string = function (buf, max) { |
| var i, out, c, c_len; |
| var len = max || buf.length; |
| |
| // Reserve max possible length (2 words per char) |
| // NB: by unknown reasons, Array is significantly faster for |
| // String.fromCharCode.apply than Uint16Array. |
| var utf16buf = new Array(len * 2); |
| |
| for (out = 0, i = 0; i < len;) { |
| c = buf[i++]; |
| // quick process ascii |
| if (c < 0x80) { utf16buf[out++] = c; continue; } |
| |
| c_len = _utf8len[c]; |
| // skip 5 & 6 byte codes |
| if (c_len > 4) { utf16buf[out++] = 0xfffd; i += c_len - 1; continue; } |
| |
| // apply mask on first byte |
| c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07; |
| // join the rest |
| while (c_len > 1 && i < len) { |
| c = (c << 6) | (buf[i++] & 0x3f); |
| c_len--; |
| } |
| |
| // terminated by end of string? |
| if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; } |
| |
| if (c < 0x10000) { |
| utf16buf[out++] = c; |
| } else { |
| c -= 0x10000; |
| utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff); |
| utf16buf[out++] = 0xdc00 | (c & 0x3ff); |
| } |
| } |
| |
| return buf2binstring(utf16buf, out); |
| }; |
| |
| |
| // Calculate max possible position in utf8 buffer, |
| // that will not break sequence. If that's not possible |
| // - (very small limits) return max size as is. |
| // |
| // buf[] - utf8 bytes array |
| // max - length limit (mandatory); |
| exports.utf8border = function (buf, max) { |
| var pos; |
| |
| max = max || buf.length; |
| if (max > buf.length) { max = buf.length; } |
| |
| // go back from last position, until start of sequence found |
| pos = max - 1; |
| while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; } |
| |
| // Very small and broken sequence, |
| // return max, because we should return something anyway. |
| if (pos < 0) { return max; } |
| |
| // If we came to start of buffer - that means buffer is too small, |
| // return max too. |
| if (pos === 0) { return max; } |
| |
| return (pos + _utf8len[buf[pos]] > max) ? pos : max; |
| }; |
| |
| },{"./common":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); |
| |
| // Setup dictionary |
| if (opt.dictionary) { |
| // Convert data if needed |
| if (typeof opt.dictionary === 'string') { |
| opt.dictionary = strings.string2buf(opt.dictionary); |
| } else if (toString.call(opt.dictionary) === '[object ArrayBuffer]') { |
| opt.dictionary = new Uint8Array(opt.dictionary); |
| } |
| if (opt.raw) { //In raw mode we need to set the dictionary early |
| status = zlib_inflate.inflateSetDictionary(this.strm, opt.dictionary); |
| if (status !== c.Z_OK) { |
| throw new Error(msg[status]); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Inflate#push(data[, mode]) -> Boolean |
| * - data (Uint8Array|Array|ArrayBuffer|String): input data |
| * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes. |
| * See constants. Skipped or `false` means Z_NO_FLUSH, `true` means Z_FINISH. |
| * |
| * Sends input data to inflate pipe, generating [[Inflate#onData]] calls with |
| * new output chunks. Returns `true` on success. The last data block must have |
| * mode Z_FINISH (or `true`). That will flush internal pending buffers and call |
| * [[Inflate#onEnd]]. For interim explicit flushes (without ending the stream) you |
| * can use mode Z_SYNC_FLUSH, keeping the decompression context. |
| * |
| * On fail call [[Inflate#onEnd]] with error code and return false. |
| * |
| * We strongly recommend to use `Uint8Array` on input for best speed (output |
| * format is detected automatically). Also, don't skip last param and always |
| * use the same type in your code (boolean or number). That will improve JS speed. |
| * |
| * For regular `Array`-s make sure all elements are [0..255]. |
| * |
| * ##### Example |
| * |
| * ```javascript |
| * push(chunk, false); // push one of data chunks |
| * ... |
| * push(chunk, true); // push last chunk |
| * ``` |
| **/ |
| Inflate.prototype.push = function (data, mode) { |
| var strm = this.strm; |
| var chunkSize = this.options.chunkSize; |
| var dictionary = this.options.dictionary; |
| var status, _mode; |
| var next_out_utf8, tail, utf8str; |
| |
| // Flag to properly process Z_BUF_ERROR on testing inflate call |
| // when we check that all output data was flushed. |
| var allowBufError = false; |
| |
| if (this.ended) { return false; } |
| _mode = (mode === ~~mode) ? mode : ((mode === true) ? c.Z_FINISH : c.Z_NO_FLUSH); |
| |
| // Convert data if needed |
| if (typeof data === 'string') { |
| // Only binary strings can be decompressed on practice |
| strm.input = strings.binstring2buf(data); |
| } else if (toString.call(data) === '[object ArrayBuffer]') { |
| strm.input = new Uint8Array(data); |
| } else { |
| strm.input = data; |
| } |
| |
| strm.next_in = 0; |
| strm.avail_in = strm.input.length; |
| |
| do { |
| if (strm.avail_out === 0) { |
| strm.output = new utils.Buf8(chunkSize); |
| strm.next_out = 0; |
| strm.avail_out = chunkSize; |
| } |
| |
| status = zlib_inflate.inflate(strm, c.Z_NO_FLUSH); /* no bad return value */ |
| |
| if (status === c.Z_NEED_DICT && dictionary) { |
| status = zlib_inflate.inflateSetDictionary(this.strm, dictionary); |
| } |
| |
| if (status === c.Z_BUF_ERROR && allowBufError === true) { |
| status = c.Z_OK; |
| allowBufError = false; |
| } |
| |
| if (status !== c.Z_STREAM_END && status !== c.Z_OK) { |
| this.onEnd(status); |
| this.ended = true; |
| return false; |
| } |
| |
| if (strm.next_out) { |
| if (strm.avail_out === 0 || status === c.Z_STREAM_END || (strm.avail_in === 0 && (_mode === c.Z_FINISH || _mode === c.Z_SYNC_FLUSH))) { |
| |
| if (this.options.to === 'string') { |
| |
| next_out_utf8 = strings.utf8border(strm.output, strm.next_out); |
| |
| tail = strm.next_out - next_out_utf8; |
| utf8str = strings.buf2string(strm.output, next_out_utf8); |
| |
| // move tail |
| strm.next_out = tail; |
| strm.avail_out = chunkSize - tail; |
| if (tail) { utils.arraySet(strm.output, strm.output, next_out_utf8, tail, 0); } |
| |
| this.onData(utf8str); |
| |
| } else { |
| this.onData(utils.shrinkBuf(strm.output, strm.next_out)); |
| } |
| } |
| } |
| |
| // When no more input data, we should check that internal inflate buffers |
| // are flushed. The only way to do it when avail_out = 0 - run one more |
| // inflate pass. But if output data not exists, inflate return Z_BUF_ERROR. |
| // Here we set flag to process this error properly. |
| // |
| // NOTE. Deflate does not return error in this case and does not needs such |
| // logic. |
| if (strm.avail_in === 0 && strm.avail_out === 0) { |
| allowBufError = true; |
| } |
| |
| } while ((strm.avail_in > 0 || strm.avail_out === 0) && status !== c.Z_STREAM_END); |
| |
| if (status === c.Z_STREAM_END) { |
| _mode = c.Z_FINISH; |
| } |
| |
| // Finalize on the last chunk. |
| if (_mode === c.Z_FINISH) { |
| status = zlib_inflate.inflateEnd(this.strm); |
| this.onEnd(status); |
| this.ended = true; |
| return status === c.Z_OK; |
| } |
| |
| // callback interim results if Z_SYNC_FLUSH. |
| if (_mode === c.Z_SYNC_FLUSH) { |
| this.onEnd(c.Z_OK); |
| strm.avail_out = 0; |
| return true; |
| } |
| |
| return true; |
| }; |
| |
| |
| /** |
| * Inflate#onData(chunk) -> Void |
| * - chunk (Uint8Array|Array|String): output data. Type of array depends |
| * on js engine support. When string output requested, each chunk |
| * will be string. |
| * |
| * By default, stores data blocks in `chunks[]` property and glue |
| * those in `onEnd`. Override this handler, if you need another behaviour. |
| **/ |
| Inflate.prototype.onData = function (chunk) { |
| this.chunks.push(chunk); |
| }; |
| |
| |
| /** |
| * Inflate#onEnd(status) -> Void |
| * - status (Number): inflate status. 0 (Z_OK) on success, |
| * other if not. |
| * |
| * Called either after you tell inflate that the input stream is |
| * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH) |
| * or if an error happened. By default - join collected chunks, |
| * free memory and fill `results` / `err` properties. |
| **/ |
| Inflate.prototype.onEnd = function (status) { |
| // On success - join |
| if (status === c.Z_OK) { |
| if (this.options.to === 'string') { |
| // Glue & convert here, until we teach pako to send |
| // utf8 aligned strings to onData |
| this.result = this.chunks.join(''); |
| } else { |
| this.result = utils.flattenChunks(this.chunks); |
| } |
| } |
| this.chunks = []; |
| this.err = status; |
| this.msg = this.strm.msg; |
| }; |
| |
| |
| /** |
| * inflate(data[, options]) -> Uint8Array|Array|String |
| * - data (Uint8Array|Array|String): input data to decompress. |
| * - options (Object): zlib inflate options. |
| * |
| * Decompress `data` with inflate/ungzip and `options`. Autodetect |
| * format via wrapper header by default. That's why we don't provide |
| * separate `ungzip` method. |
| * |
| * Supported options are: |
| * |
| * - windowBits |
| * |
| * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced) |
| * for more information. |
| * |
| * Sugar (options): |
| * |
| * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify |
| * negative windowBits implicitly. |
| * - `to` (String) - if equal to 'string', then result will be converted |
| * from utf8 to utf16 (javascript) string. When string output requested, |
| * chunk length can differ from `chunkSize`, depending on content. |
| * |
| * |
| * ##### Example: |
| * |
| * ```javascript |
| * var pako = require('pako') |
| * , input = pako.deflate([1,2,3,4,5,6,7,8,9]) |
| * , output; |
| * |
| * try { |
| * output = pako.inflate(input); |
| * } catch (err) |
| * console.log(err); |
| * } |
| * ``` |
| **/ |
| function inflate(input, options) { |
| var inflator = new Inflate(options); |
| |
| inflator.push(input, true); |
| |
| // That will never happens, if you don't cheat with options :) |
| if (inflator.err) { throw inflator.msg || msg[inflator.err]; } |
| |
| return inflator.result; |
| } |
| |
| |
| /** |
| * inflateRaw(data[, options]) -> Uint8Array|Array|String |
| * - data (Uint8Array|Array|String): input data to decompress. |
| * - options (Object): zlib inflate options. |
| * |
| * The same as [[inflate]], but creates raw data, without wrapper |
| * (header and adler32 crc). |
| **/ |
| function inflateRaw(input, options) { |
| options = options || {}; |
| options.raw = true; |
| return inflate(input, options); |
| } |
| |
| |
| /** |
| * ungzip(data[, options]) -> Uint8Array|Array|String |
| * - data (Uint8Array|Array|String): input data to decompress. |
| * - options (Object): zlib inflate options. |
| * |
| * Just shortcut to [[inflate]], because it autodetects format |
| * by header.content. Done for convenience. |
| **/ |
| |
| |
| exports.Inflate = Inflate; |
| exports.inflate = inflate; |
| exports.inflateRaw = inflateRaw; |
| exports.ungzip = inflate; |
| |
| },{"./utils/common":1,"./utils/strings":2,"./zlib/constants":4,"./zlib/gzheader":6,"./zlib/inflate":8,"./zlib/messages":10,"./zlib/zstream":11}]},{},[])("/lib/inflate.js") |
| }); |