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- /**
- * Cesium - https://github.com/AnalyticalGraphicsInc/cesium
- *
- * Copyright 2011-2016 Cesium Contributors
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * Columbus View (Pat. Pend.)
- *
- * Portions licensed separately.
- * See https://github.com/AnalyticalGraphicsInc/cesium/blob/master/LICENSE.md for full licensing details.
- */
- /*
- Copyright (c) 2013 Gildas Lormeau. All rights reserved.
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions are met:
- 1. Redistributions of source code must retain the above copyright notice,
- this list of conditions and the following disclaimer.
- 2. Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in
- the documentation and/or other materials provided with the distribution.
- 3. The names of the authors may not be used to endorse or promote products
- derived from this software without specific prior written permission.
- THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
- INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
- FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
- INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
- INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
- OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- /*
- * This program is based on JZlib 1.0.2 ymnk, JCraft,Inc.
- * JZlib is based on zlib-1.1.3, so all credit should go authors
- * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
- * and contributors of zlib.
- */
- (function(obj) {
- // Global
- var MAX_BITS = 15;
- var Z_OK = 0;
- var Z_STREAM_END = 1;
- var Z_NEED_DICT = 2;
- var Z_STREAM_ERROR = -2;
- var Z_DATA_ERROR = -3;
- var Z_MEM_ERROR = -4;
- var Z_BUF_ERROR = -5;
- var inflate_mask = [ 0x00000000, 0x00000001, 0x00000003, 0x00000007, 0x0000000f, 0x0000001f, 0x0000003f, 0x0000007f, 0x000000ff, 0x000001ff, 0x000003ff,
- 0x000007ff, 0x00000fff, 0x00001fff, 0x00003fff, 0x00007fff, 0x0000ffff ];
- var MANY = 1440;
- // JZlib version : "1.0.2"
- var Z_NO_FLUSH = 0;
- var Z_FINISH = 4;
- // InfTree
- var fixed_bl = 9;
- var fixed_bd = 5;
- var fixed_tl = [ 96, 7, 256, 0, 8, 80, 0, 8, 16, 84, 8, 115, 82, 7, 31, 0, 8, 112, 0, 8, 48, 0, 9, 192, 80, 7, 10, 0, 8, 96, 0, 8, 32, 0, 9, 160, 0, 8, 0,
- 0, 8, 128, 0, 8, 64, 0, 9, 224, 80, 7, 6, 0, 8, 88, 0, 8, 24, 0, 9, 144, 83, 7, 59, 0, 8, 120, 0, 8, 56, 0, 9, 208, 81, 7, 17, 0, 8, 104, 0, 8, 40,
- 0, 9, 176, 0, 8, 8, 0, 8, 136, 0, 8, 72, 0, 9, 240, 80, 7, 4, 0, 8, 84, 0, 8, 20, 85, 8, 227, 83, 7, 43, 0, 8, 116, 0, 8, 52, 0, 9, 200, 81, 7, 13,
- 0, 8, 100, 0, 8, 36, 0, 9, 168, 0, 8, 4, 0, 8, 132, 0, 8, 68, 0, 9, 232, 80, 7, 8, 0, 8, 92, 0, 8, 28, 0, 9, 152, 84, 7, 83, 0, 8, 124, 0, 8, 60,
- 0, 9, 216, 82, 7, 23, 0, 8, 108, 0, 8, 44, 0, 9, 184, 0, 8, 12, 0, 8, 140, 0, 8, 76, 0, 9, 248, 80, 7, 3, 0, 8, 82, 0, 8, 18, 85, 8, 163, 83, 7,
- 35, 0, 8, 114, 0, 8, 50, 0, 9, 196, 81, 7, 11, 0, 8, 98, 0, 8, 34, 0, 9, 164, 0, 8, 2, 0, 8, 130, 0, 8, 66, 0, 9, 228, 80, 7, 7, 0, 8, 90, 0, 8,
- 26, 0, 9, 148, 84, 7, 67, 0, 8, 122, 0, 8, 58, 0, 9, 212, 82, 7, 19, 0, 8, 106, 0, 8, 42, 0, 9, 180, 0, 8, 10, 0, 8, 138, 0, 8, 74, 0, 9, 244, 80,
- 7, 5, 0, 8, 86, 0, 8, 22, 192, 8, 0, 83, 7, 51, 0, 8, 118, 0, 8, 54, 0, 9, 204, 81, 7, 15, 0, 8, 102, 0, 8, 38, 0, 9, 172, 0, 8, 6, 0, 8, 134, 0,
- 8, 70, 0, 9, 236, 80, 7, 9, 0, 8, 94, 0, 8, 30, 0, 9, 156, 84, 7, 99, 0, 8, 126, 0, 8, 62, 0, 9, 220, 82, 7, 27, 0, 8, 110, 0, 8, 46, 0, 9, 188, 0,
- 8, 14, 0, 8, 142, 0, 8, 78, 0, 9, 252, 96, 7, 256, 0, 8, 81, 0, 8, 17, 85, 8, 131, 82, 7, 31, 0, 8, 113, 0, 8, 49, 0, 9, 194, 80, 7, 10, 0, 8, 97,
- 0, 8, 33, 0, 9, 162, 0, 8, 1, 0, 8, 129, 0, 8, 65, 0, 9, 226, 80, 7, 6, 0, 8, 89, 0, 8, 25, 0, 9, 146, 83, 7, 59, 0, 8, 121, 0, 8, 57, 0, 9, 210,
- 81, 7, 17, 0, 8, 105, 0, 8, 41, 0, 9, 178, 0, 8, 9, 0, 8, 137, 0, 8, 73, 0, 9, 242, 80, 7, 4, 0, 8, 85, 0, 8, 21, 80, 8, 258, 83, 7, 43, 0, 8, 117,
- 0, 8, 53, 0, 9, 202, 81, 7, 13, 0, 8, 101, 0, 8, 37, 0, 9, 170, 0, 8, 5, 0, 8, 133, 0, 8, 69, 0, 9, 234, 80, 7, 8, 0, 8, 93, 0, 8, 29, 0, 9, 154,
- 84, 7, 83, 0, 8, 125, 0, 8, 61, 0, 9, 218, 82, 7, 23, 0, 8, 109, 0, 8, 45, 0, 9, 186, 0, 8, 13, 0, 8, 141, 0, 8, 77, 0, 9, 250, 80, 7, 3, 0, 8, 83,
- 0, 8, 19, 85, 8, 195, 83, 7, 35, 0, 8, 115, 0, 8, 51, 0, 9, 198, 81, 7, 11, 0, 8, 99, 0, 8, 35, 0, 9, 166, 0, 8, 3, 0, 8, 131, 0, 8, 67, 0, 9, 230,
- 80, 7, 7, 0, 8, 91, 0, 8, 27, 0, 9, 150, 84, 7, 67, 0, 8, 123, 0, 8, 59, 0, 9, 214, 82, 7, 19, 0, 8, 107, 0, 8, 43, 0, 9, 182, 0, 8, 11, 0, 8, 139,
- 0, 8, 75, 0, 9, 246, 80, 7, 5, 0, 8, 87, 0, 8, 23, 192, 8, 0, 83, 7, 51, 0, 8, 119, 0, 8, 55, 0, 9, 206, 81, 7, 15, 0, 8, 103, 0, 8, 39, 0, 9, 174,
- 0, 8, 7, 0, 8, 135, 0, 8, 71, 0, 9, 238, 80, 7, 9, 0, 8, 95, 0, 8, 31, 0, 9, 158, 84, 7, 99, 0, 8, 127, 0, 8, 63, 0, 9, 222, 82, 7, 27, 0, 8, 111,
- 0, 8, 47, 0, 9, 190, 0, 8, 15, 0, 8, 143, 0, 8, 79, 0, 9, 254, 96, 7, 256, 0, 8, 80, 0, 8, 16, 84, 8, 115, 82, 7, 31, 0, 8, 112, 0, 8, 48, 0, 9,
- 193, 80, 7, 10, 0, 8, 96, 0, 8, 32, 0, 9, 161, 0, 8, 0, 0, 8, 128, 0, 8, 64, 0, 9, 225, 80, 7, 6, 0, 8, 88, 0, 8, 24, 0, 9, 145, 83, 7, 59, 0, 8,
- 120, 0, 8, 56, 0, 9, 209, 81, 7, 17, 0, 8, 104, 0, 8, 40, 0, 9, 177, 0, 8, 8, 0, 8, 136, 0, 8, 72, 0, 9, 241, 80, 7, 4, 0, 8, 84, 0, 8, 20, 85, 8,
- 227, 83, 7, 43, 0, 8, 116, 0, 8, 52, 0, 9, 201, 81, 7, 13, 0, 8, 100, 0, 8, 36, 0, 9, 169, 0, 8, 4, 0, 8, 132, 0, 8, 68, 0, 9, 233, 80, 7, 8, 0, 8,
- 92, 0, 8, 28, 0, 9, 153, 84, 7, 83, 0, 8, 124, 0, 8, 60, 0, 9, 217, 82, 7, 23, 0, 8, 108, 0, 8, 44, 0, 9, 185, 0, 8, 12, 0, 8, 140, 0, 8, 76, 0, 9,
- 249, 80, 7, 3, 0, 8, 82, 0, 8, 18, 85, 8, 163, 83, 7, 35, 0, 8, 114, 0, 8, 50, 0, 9, 197, 81, 7, 11, 0, 8, 98, 0, 8, 34, 0, 9, 165, 0, 8, 2, 0, 8,
- 130, 0, 8, 66, 0, 9, 229, 80, 7, 7, 0, 8, 90, 0, 8, 26, 0, 9, 149, 84, 7, 67, 0, 8, 122, 0, 8, 58, 0, 9, 213, 82, 7, 19, 0, 8, 106, 0, 8, 42, 0, 9,
- 181, 0, 8, 10, 0, 8, 138, 0, 8, 74, 0, 9, 245, 80, 7, 5, 0, 8, 86, 0, 8, 22, 192, 8, 0, 83, 7, 51, 0, 8, 118, 0, 8, 54, 0, 9, 205, 81, 7, 15, 0, 8,
- 102, 0, 8, 38, 0, 9, 173, 0, 8, 6, 0, 8, 134, 0, 8, 70, 0, 9, 237, 80, 7, 9, 0, 8, 94, 0, 8, 30, 0, 9, 157, 84, 7, 99, 0, 8, 126, 0, 8, 62, 0, 9,
- 221, 82, 7, 27, 0, 8, 110, 0, 8, 46, 0, 9, 189, 0, 8, 14, 0, 8, 142, 0, 8, 78, 0, 9, 253, 96, 7, 256, 0, 8, 81, 0, 8, 17, 85, 8, 131, 82, 7, 31, 0,
- 8, 113, 0, 8, 49, 0, 9, 195, 80, 7, 10, 0, 8, 97, 0, 8, 33, 0, 9, 163, 0, 8, 1, 0, 8, 129, 0, 8, 65, 0, 9, 227, 80, 7, 6, 0, 8, 89, 0, 8, 25, 0, 9,
- 147, 83, 7, 59, 0, 8, 121, 0, 8, 57, 0, 9, 211, 81, 7, 17, 0, 8, 105, 0, 8, 41, 0, 9, 179, 0, 8, 9, 0, 8, 137, 0, 8, 73, 0, 9, 243, 80, 7, 4, 0, 8,
- 85, 0, 8, 21, 80, 8, 258, 83, 7, 43, 0, 8, 117, 0, 8, 53, 0, 9, 203, 81, 7, 13, 0, 8, 101, 0, 8, 37, 0, 9, 171, 0, 8, 5, 0, 8, 133, 0, 8, 69, 0, 9,
- 235, 80, 7, 8, 0, 8, 93, 0, 8, 29, 0, 9, 155, 84, 7, 83, 0, 8, 125, 0, 8, 61, 0, 9, 219, 82, 7, 23, 0, 8, 109, 0, 8, 45, 0, 9, 187, 0, 8, 13, 0, 8,
- 141, 0, 8, 77, 0, 9, 251, 80, 7, 3, 0, 8, 83, 0, 8, 19, 85, 8, 195, 83, 7, 35, 0, 8, 115, 0, 8, 51, 0, 9, 199, 81, 7, 11, 0, 8, 99, 0, 8, 35, 0, 9,
- 167, 0, 8, 3, 0, 8, 131, 0, 8, 67, 0, 9, 231, 80, 7, 7, 0, 8, 91, 0, 8, 27, 0, 9, 151, 84, 7, 67, 0, 8, 123, 0, 8, 59, 0, 9, 215, 82, 7, 19, 0, 8,
- 107, 0, 8, 43, 0, 9, 183, 0, 8, 11, 0, 8, 139, 0, 8, 75, 0, 9, 247, 80, 7, 5, 0, 8, 87, 0, 8, 23, 192, 8, 0, 83, 7, 51, 0, 8, 119, 0, 8, 55, 0, 9,
- 207, 81, 7, 15, 0, 8, 103, 0, 8, 39, 0, 9, 175, 0, 8, 7, 0, 8, 135, 0, 8, 71, 0, 9, 239, 80, 7, 9, 0, 8, 95, 0, 8, 31, 0, 9, 159, 84, 7, 99, 0, 8,
- 127, 0, 8, 63, 0, 9, 223, 82, 7, 27, 0, 8, 111, 0, 8, 47, 0, 9, 191, 0, 8, 15, 0, 8, 143, 0, 8, 79, 0, 9, 255 ];
- var fixed_td = [ 80, 5, 1, 87, 5, 257, 83, 5, 17, 91, 5, 4097, 81, 5, 5, 89, 5, 1025, 85, 5, 65, 93, 5, 16385, 80, 5, 3, 88, 5, 513, 84, 5, 33, 92, 5,
- 8193, 82, 5, 9, 90, 5, 2049, 86, 5, 129, 192, 5, 24577, 80, 5, 2, 87, 5, 385, 83, 5, 25, 91, 5, 6145, 81, 5, 7, 89, 5, 1537, 85, 5, 97, 93, 5,
- 24577, 80, 5, 4, 88, 5, 769, 84, 5, 49, 92, 5, 12289, 82, 5, 13, 90, 5, 3073, 86, 5, 193, 192, 5, 24577 ];
- // Tables for deflate from PKZIP's appnote.txt.
- var cplens = [ // Copy lengths for literal codes 257..285
- 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 ];
- // see note #13 above about 258
- var cplext = [ // Extra bits for literal codes 257..285
- 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0, 112, 112 // 112==invalid
- ];
- var cpdist = [ // Copy offsets for distance codes 0..29
- 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 ];
- var cpdext = [ // Extra bits for distance codes
- 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13 ];
- // If BMAX needs to be larger than 16, then h and x[] should be uLong.
- var BMAX = 15; // maximum bit length of any code
- function InfTree() {
- var that = this;
- var hn; // hufts used in space
- var v; // work area for huft_build
- var c; // bit length count table
- var r; // table entry for structure assignment
- var u; // table stack
- var x; // bit offsets, then code stack
- function huft_build(b, // code lengths in bits (all assumed <=
- // BMAX)
- bindex, n, // number of codes (assumed <= 288)
- s, // number of simple-valued codes (0..s-1)
- d, // list of base values for non-simple codes
- e, // list of extra bits for non-simple codes
- t, // result: starting table
- m, // maximum lookup bits, returns actual
- hp,// space for trees
- hn,// hufts used in space
- v // working area: values in order of bit length
- ) {
- // Given a list of code lengths and a maximum table size, make a set of
- // tables to decode that set of codes. Return Z_OK on success,
- // Z_BUF_ERROR
- // if the given code set is incomplete (the tables are still built in
- // this
- // case), Z_DATA_ERROR if the input is invalid (an over-subscribed set
- // of
- // lengths), or Z_MEM_ERROR if not enough memory.
- var a; // counter for codes of length k
- var f; // i repeats in table every f entries
- var g; // maximum code length
- var h; // table level
- var i; // counter, current code
- var j; // counter
- var k; // number of bits in current code
- var l; // bits per table (returned in m)
- var mask; // (1 << w) - 1, to avoid cc -O bug on HP
- var p; // pointer into c[], b[], or v[]
- var q; // points to current table
- var w; // bits before this table == (l * h)
- var xp; // pointer into x
- var y; // number of dummy codes added
- var z; // number of entries in current table
- // Generate counts for each bit length
- p = 0;
- i = n;
- do {
- c[b[bindex + p]]++;
- p++;
- i--; // assume all entries <= BMAX
- } while (i !== 0);
- if (c[0] == n) { // null input--all zero length codes
- t[0] = -1;
- m[0] = 0;
- return Z_OK;
- }
- // Find minimum and maximum length, bound *m by those
- l = m[0];
- for (j = 1; j <= BMAX; j++)
- if (c[j] !== 0)
- break;
- k = j; // minimum code length
- if (l < j) {
- l = j;
- }
- for (i = BMAX; i !== 0; i--) {
- if (c[i] !== 0)
- break;
- }
- g = i; // maximum code length
- if (l > i) {
- l = i;
- }
- m[0] = l;
- // Adjust last length count to fill out codes, if needed
- for (y = 1 << j; j < i; j++, y <<= 1) {
- if ((y -= c[j]) < 0) {
- return Z_DATA_ERROR;
- }
- }
- if ((y -= c[i]) < 0) {
- return Z_DATA_ERROR;
- }
- c[i] += y;
- // Generate starting offsets into the value table for each length
- x[1] = j = 0;
- p = 1;
- xp = 2;
- while (--i !== 0) { // note that i == g from above
- x[xp] = (j += c[p]);
- xp++;
- p++;
- }
- // Make a table of values in order of bit lengths
- i = 0;
- p = 0;
- do {
- if ((j = b[bindex + p]) !== 0) {
- v[x[j]++] = i;
- }
- p++;
- } while (++i < n);
- n = x[g]; // set n to length of v
- // Generate the Huffman codes and for each, make the table entries
- x[0] = i = 0; // first Huffman code is zero
- p = 0; // grab values in bit order
- h = -1; // no tables yet--level -1
- w = -l; // bits decoded == (l * h)
- u[0] = 0; // just to keep compilers happy
- q = 0; // ditto
- z = 0; // ditto
- // go through the bit lengths (k already is bits in shortest code)
- for (; k <= g; k++) {
- a = c[k];
- while (a-- !== 0) {
- // here i is the Huffman code of length k bits for value *p
- // make tables up to required level
- while (k > w + l) {
- h++;
- w += l; // previous table always l bits
- // compute minimum size table less than or equal to l bits
- z = g - w;
- z = (z > l) ? l : z; // table size upper limit
- if ((f = 1 << (j = k - w)) > a + 1) { // try a k-w bit table
- // too few codes for
- // k-w bit table
- f -= a + 1; // deduct codes from patterns left
- xp = k;
- if (j < z) {
- while (++j < z) { // try smaller tables up to z bits
- if ((f <<= 1) <= c[++xp])
- break; // enough codes to use up j bits
- f -= c[xp]; // else deduct codes from patterns
- }
- }
- }
- z = 1 << j; // table entries for j-bit table
- // allocate new table
- if (hn[0] + z > MANY) { // (note: doesn't matter for fixed)
- return Z_DATA_ERROR; // overflow of MANY
- }
- u[h] = q = /* hp+ */hn[0]; // DEBUG
- hn[0] += z;
- // connect to last table, if there is one
- if (h !== 0) {
- x[h] = i; // save pattern for backing up
- r[0] = /* (byte) */j; // bits in this table
- r[1] = /* (byte) */l; // bits to dump before this table
- j = i >>> (w - l);
- r[2] = /* (int) */(q - u[h - 1] - j); // offset to this table
- hp.set(r, (u[h - 1] + j) * 3);
- // to
- // last
- // table
- } else {
- t[0] = q; // first table is returned result
- }
- }
- // set up table entry in r
- r[1] = /* (byte) */(k - w);
- if (p >= n) {
- r[0] = 128 + 64; // out of values--invalid code
- } else if (v[p] < s) {
- r[0] = /* (byte) */(v[p] < 256 ? 0 : 32 + 64); // 256 is
- // end-of-block
- r[2] = v[p++]; // simple code is just the value
- } else {
- r[0] = /* (byte) */(e[v[p] - s] + 16 + 64); // non-simple--look
- // up in lists
- r[2] = d[v[p++] - s];
- }
- // fill code-like entries with r
- f = 1 << (k - w);
- for (j = i >>> w; j < z; j += f) {
- hp.set(r, (q + j) * 3);
- }
- // backwards increment the k-bit code i
- for (j = 1 << (k - 1); (i & j) !== 0; j >>>= 1) {
- i ^= j;
- }
- i ^= j;
- // backup over finished tables
- mask = (1 << w) - 1; // needed on HP, cc -O bug
- while ((i & mask) != x[h]) {
- h--; // don't need to update q
- w -= l;
- mask = (1 << w) - 1;
- }
- }
- }
- // Return Z_BUF_ERROR if we were given an incomplete table
- return y !== 0 && g != 1 ? Z_BUF_ERROR : Z_OK;
- }
- function initWorkArea(vsize) {
- var i;
- if (!hn) {
- hn = []; // []; //new Array(1);
- v = []; // new Array(vsize);
- c = new Int32Array(BMAX + 1); // new Array(BMAX + 1);
- r = []; // new Array(3);
- u = new Int32Array(BMAX); // new Array(BMAX);
- x = new Int32Array(BMAX + 1); // new Array(BMAX + 1);
- }
- if (v.length < vsize) {
- v = []; // new Array(vsize);
- }
- for (i = 0; i < vsize; i++) {
- v[i] = 0;
- }
- for (i = 0; i < BMAX + 1; i++) {
- c[i] = 0;
- }
- for (i = 0; i < 3; i++) {
- r[i] = 0;
- }
- // for(int i=0; i<BMAX; i++){u[i]=0;}
- u.set(c.subarray(0, BMAX), 0);
- // for(int i=0; i<BMAX+1; i++){x[i]=0;}
- x.set(c.subarray(0, BMAX + 1), 0);
- }
- that.inflate_trees_bits = function(c, // 19 code lengths
- bb, // bits tree desired/actual depth
- tb, // bits tree result
- hp, // space for trees
- z // for messages
- ) {
- var result;
- initWorkArea(19);
- hn[0] = 0;
- result = huft_build(c, 0, 19, 19, null, null, tb, bb, hp, hn, v);
- if (result == Z_DATA_ERROR) {
- z.msg = "oversubscribed dynamic bit lengths tree";
- } else if (result == Z_BUF_ERROR || bb[0] === 0) {
- z.msg = "incomplete dynamic bit lengths tree";
- result = Z_DATA_ERROR;
- }
- return result;
- };
- that.inflate_trees_dynamic = function(nl, // number of literal/length codes
- nd, // number of distance codes
- c, // that many (total) code lengths
- bl, // literal desired/actual bit depth
- bd, // distance desired/actual bit depth
- tl, // literal/length tree result
- td, // distance tree result
- hp, // space for trees
- z // for messages
- ) {
- var result;
- // build literal/length tree
- initWorkArea(288);
- hn[0] = 0;
- result = huft_build(c, 0, nl, 257, cplens, cplext, tl, bl, hp, hn, v);
- if (result != Z_OK || bl[0] === 0) {
- if (result == Z_DATA_ERROR) {
- z.msg = "oversubscribed literal/length tree";
- } else if (result != Z_MEM_ERROR) {
- z.msg = "incomplete literal/length tree";
- result = Z_DATA_ERROR;
- }
- return result;
- }
- // build distance tree
- initWorkArea(288);
- result = huft_build(c, nl, nd, 0, cpdist, cpdext, td, bd, hp, hn, v);
- if (result != Z_OK || (bd[0] === 0 && nl > 257)) {
- if (result == Z_DATA_ERROR) {
- z.msg = "oversubscribed distance tree";
- } else if (result == Z_BUF_ERROR) {
- z.msg = "incomplete distance tree";
- result = Z_DATA_ERROR;
- } else if (result != Z_MEM_ERROR) {
- z.msg = "empty distance tree with lengths";
- result = Z_DATA_ERROR;
- }
- return result;
- }
- return Z_OK;
- };
- }
- InfTree.inflate_trees_fixed = function(bl, // literal desired/actual bit depth
- bd, // distance desired/actual bit depth
- tl,// literal/length tree result
- td// distance tree result
- ) {
- bl[0] = fixed_bl;
- bd[0] = fixed_bd;
- tl[0] = fixed_tl;
- td[0] = fixed_td;
- return Z_OK;
- };
- // InfCodes
- // waiting for "i:"=input,
- // "o:"=output,
- // "x:"=nothing
- var START = 0; // x: set up for LEN
- var LEN = 1; // i: get length/literal/eob next
- var LENEXT = 2; // i: getting length extra (have base)
- var DIST = 3; // i: get distance next
- var DISTEXT = 4;// i: getting distance extra
- var COPY = 5; // o: copying bytes in window, waiting
- // for space
- var LIT = 6; // o: got literal, waiting for output
- // space
- var WASH = 7; // o: got eob, possibly still output
- // waiting
- var END = 8; // x: got eob and all data flushed
- var BADCODE = 9;// x: got error
- function InfCodes() {
- var that = this;
- var mode; // current inflate_codes mode
- // mode dependent information
- var len = 0;
- var tree; // pointer into tree
- var tree_index = 0;
- var need = 0; // bits needed
- var lit = 0;
- // if EXT or COPY, where and how much
- var get = 0; // bits to get for extra
- var dist = 0; // distance back to copy from
- var lbits = 0; // ltree bits decoded per branch
- var dbits = 0; // dtree bits decoder per branch
- var ltree; // literal/length/eob tree
- var ltree_index = 0; // literal/length/eob tree
- var dtree; // distance tree
- var dtree_index = 0; // distance tree
- // Called with number of bytes left to write in window at least 258
- // (the maximum string length) and number of input bytes available
- // at least ten. The ten bytes are six bytes for the longest length/
- // distance pair plus four bytes for overloading the bit buffer.
- function inflate_fast(bl, bd, tl, tl_index, td, td_index, s, z) {
- var t; // temporary pointer
- var tp; // temporary pointer
- var tp_index; // temporary pointer
- var e; // extra bits or operation
- var b; // bit buffer
- var k; // bits in bit buffer
- var p; // input data pointer
- var n; // bytes available there
- var q; // output window write pointer
- var m; // bytes to end of window or read pointer
- var ml; // mask for literal/length tree
- var md; // mask for distance tree
- var c; // bytes to copy
- var d; // distance back to copy from
- var r; // copy source pointer
- var tp_index_t_3; // (tp_index+t)*3
- // load input, output, bit values
- p = z.next_in_index;
- n = z.avail_in;
- b = s.bitb;
- k = s.bitk;
- q = s.write;
- m = q < s.read ? s.read - q - 1 : s.end - q;
- // initialize masks
- ml = inflate_mask[bl];
- md = inflate_mask[bd];
- // do until not enough input or output space for fast loop
- do { // assume called with m >= 258 && n >= 10
- // get literal/length code
- while (k < (20)) { // max bits for literal/length code
- n--;
- b |= (z.read_byte(p++) & 0xff) << k;
- k += 8;
- }
- t = b & ml;
- tp = tl;
- tp_index = tl_index;
- tp_index_t_3 = (tp_index + t) * 3;
- if ((e = tp[tp_index_t_3]) === 0) {
- b >>= (tp[tp_index_t_3 + 1]);
- k -= (tp[tp_index_t_3 + 1]);
- s.window[q++] = /* (byte) */tp[tp_index_t_3 + 2];
- m--;
- continue;
- }
- do {
- b >>= (tp[tp_index_t_3 + 1]);
- k -= (tp[tp_index_t_3 + 1]);
- if ((e & 16) !== 0) {
- e &= 15;
- c = tp[tp_index_t_3 + 2] + (/* (int) */b & inflate_mask[e]);
- b >>= e;
- k -= e;
- // decode distance base of block to copy
- while (k < (15)) { // max bits for distance code
- n--;
- b |= (z.read_byte(p++) & 0xff) << k;
- k += 8;
- }
- t = b & md;
- tp = td;
- tp_index = td_index;
- tp_index_t_3 = (tp_index + t) * 3;
- e = tp[tp_index_t_3];
- do {
- b >>= (tp[tp_index_t_3 + 1]);
- k -= (tp[tp_index_t_3 + 1]);
- if ((e & 16) !== 0) {
- // get extra bits to add to distance base
- e &= 15;
- while (k < (e)) { // get extra bits (up to 13)
- n--;
- b |= (z.read_byte(p++) & 0xff) << k;
- k += 8;
- }
- d = tp[tp_index_t_3 + 2] + (b & inflate_mask[e]);
- b >>= (e);
- k -= (e);
- // do the copy
- m -= c;
- if (q >= d) { // offset before dest
- // just copy
- r = q - d;
- if (q - r > 0 && 2 > (q - r)) {
- s.window[q++] = s.window[r++]; // minimum
- // count is
- // three,
- s.window[q++] = s.window[r++]; // so unroll
- // loop a
- // little
- c -= 2;
- } else {
- s.window.set(s.window.subarray(r, r + 2), q);
- q += 2;
- r += 2;
- c -= 2;
- }
- } else { // else offset after destination
- r = q - d;
- do {
- r += s.end; // force pointer in window
- } while (r < 0); // covers invalid distances
- e = s.end - r;
- if (c > e) { // if source crosses,
- c -= e; // wrapped copy
- if (q - r > 0 && e > (q - r)) {
- do {
- s.window[q++] = s.window[r++];
- } while (--e !== 0);
- } else {
- s.window.set(s.window.subarray(r, r + e), q);
- q += e;
- r += e;
- e = 0;
- }
- r = 0; // copy rest from start of window
- }
- }
- // copy all or what's left
- if (q - r > 0 && c > (q - r)) {
- do {
- s.window[q++] = s.window[r++];
- } while (--c !== 0);
- } else {
- s.window.set(s.window.subarray(r, r + c), q);
- q += c;
- r += c;
- c = 0;
- }
- break;
- } else if ((e & 64) === 0) {
- t += tp[tp_index_t_3 + 2];
- t += (b & inflate_mask[e]);
- tp_index_t_3 = (tp_index + t) * 3;
- e = tp[tp_index_t_3];
- } else {
- z.msg = "invalid distance code";
- c = z.avail_in - n;
- c = (k >> 3) < c ? k >> 3 : c;
- n += c;
- p -= c;
- k -= c << 3;
- s.bitb = b;
- s.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- s.write = q;
- return Z_DATA_ERROR;
- }
- } while (true);
- break;
- }
- if ((e & 64) === 0) {
- t += tp[tp_index_t_3 + 2];
- t += (b & inflate_mask[e]);
- tp_index_t_3 = (tp_index + t) * 3;
- if ((e = tp[tp_index_t_3]) === 0) {
- b >>= (tp[tp_index_t_3 + 1]);
- k -= (tp[tp_index_t_3 + 1]);
- s.window[q++] = /* (byte) */tp[tp_index_t_3 + 2];
- m--;
- break;
- }
- } else if ((e & 32) !== 0) {
- c = z.avail_in - n;
- c = (k >> 3) < c ? k >> 3 : c;
- n += c;
- p -= c;
- k -= c << 3;
- s.bitb = b;
- s.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- s.write = q;
- return Z_STREAM_END;
- } else {
- z.msg = "invalid literal/length code";
- c = z.avail_in - n;
- c = (k >> 3) < c ? k >> 3 : c;
- n += c;
- p -= c;
- k -= c << 3;
- s.bitb = b;
- s.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- s.write = q;
- return Z_DATA_ERROR;
- }
- } while (true);
- } while (m >= 258 && n >= 10);
- // not enough input or output--restore pointers and return
- c = z.avail_in - n;
- c = (k >> 3) < c ? k >> 3 : c;
- n += c;
- p -= c;
- k -= c << 3;
- s.bitb = b;
- s.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- s.write = q;
- return Z_OK;
- }
- that.init = function(bl, bd, tl, tl_index, td, td_index) {
- mode = START;
- lbits = /* (byte) */bl;
- dbits = /* (byte) */bd;
- ltree = tl;
- ltree_index = tl_index;
- dtree = td;
- dtree_index = td_index;
- tree = null;
- };
- that.proc = function(s, z, r) {
- var j; // temporary storage
- var tindex; // temporary pointer
- var e; // extra bits or operation
- var b = 0; // bit buffer
- var k = 0; // bits in bit buffer
- var p = 0; // input data pointer
- var n; // bytes available there
- var q; // output window write pointer
- var m; // bytes to end of window or read pointer
- var f; // pointer to copy strings from
- // copy input/output information to locals (UPDATE macro restores)
- p = z.next_in_index;
- n = z.avail_in;
- b = s.bitb;
- k = s.bitk;
- q = s.write;
- m = q < s.read ? s.read - q - 1 : s.end - q;
- // process input and output based on current state
- while (true) {
- switch (mode) {
- // waiting for "i:"=input, "o:"=output, "x:"=nothing
- case START: // x: set up for LEN
- if (m >= 258 && n >= 10) {
- s.bitb = b;
- s.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- s.write = q;
- r = inflate_fast(lbits, dbits, ltree, ltree_index, dtree, dtree_index, s, z);
- p = z.next_in_index;
- n = z.avail_in;
- b = s.bitb;
- k = s.bitk;
- q = s.write;
- m = q < s.read ? s.read - q - 1 : s.end - q;
- if (r != Z_OK) {
- mode = r == Z_STREAM_END ? WASH : BADCODE;
- break;
- }
- }
- need = lbits;
- tree = ltree;
- tree_index = ltree_index;
- mode = LEN;
- case LEN: // i: get length/literal/eob next
- j = need;
- while (k < (j)) {
- if (n !== 0)
- r = Z_OK;
- else {
- s.bitb = b;
- s.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- s.write = q;
- return s.inflate_flush(z, r);
- }
- n--;
- b |= (z.read_byte(p++) & 0xff) << k;
- k += 8;
- }
- tindex = (tree_index + (b & inflate_mask[j])) * 3;
- b >>>= (tree[tindex + 1]);
- k -= (tree[tindex + 1]);
- e = tree[tindex];
- if (e === 0) { // literal
- lit = tree[tindex + 2];
- mode = LIT;
- break;
- }
- if ((e & 16) !== 0) { // length
- get = e & 15;
- len = tree[tindex + 2];
- mode = LENEXT;
- break;
- }
- if ((e & 64) === 0) { // next table
- need = e;
- tree_index = tindex / 3 + tree[tindex + 2];
- break;
- }
- if ((e & 32) !== 0) { // end of block
- mode = WASH;
- break;
- }
- mode = BADCODE; // invalid code
- z.msg = "invalid literal/length code";
- r = Z_DATA_ERROR;
- s.bitb = b;
- s.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- s.write = q;
- return s.inflate_flush(z, r);
- case LENEXT: // i: getting length extra (have base)
- j = get;
- while (k < (j)) {
- if (n !== 0)
- r = Z_OK;
- else {
- s.bitb = b;
- s.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- s.write = q;
- return s.inflate_flush(z, r);
- }
- n--;
- b |= (z.read_byte(p++) & 0xff) << k;
- k += 8;
- }
- len += (b & inflate_mask[j]);
- b >>= j;
- k -= j;
- need = dbits;
- tree = dtree;
- tree_index = dtree_index;
- mode = DIST;
- case DIST: // i: get distance next
- j = need;
- while (k < (j)) {
- if (n !== 0)
- r = Z_OK;
- else {
- s.bitb = b;
- s.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- s.write = q;
- return s.inflate_flush(z, r);
- }
- n--;
- b |= (z.read_byte(p++) & 0xff) << k;
- k += 8;
- }
- tindex = (tree_index + (b & inflate_mask[j])) * 3;
- b >>= tree[tindex + 1];
- k -= tree[tindex + 1];
- e = (tree[tindex]);
- if ((e & 16) !== 0) { // distance
- get = e & 15;
- dist = tree[tindex + 2];
- mode = DISTEXT;
- break;
- }
- if ((e & 64) === 0) { // next table
- need = e;
- tree_index = tindex / 3 + tree[tindex + 2];
- break;
- }
- mode = BADCODE; // invalid code
- z.msg = "invalid distance code";
- r = Z_DATA_ERROR;
- s.bitb = b;
- s.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- s.write = q;
- return s.inflate_flush(z, r);
- case DISTEXT: // i: getting distance extra
- j = get;
- while (k < (j)) {
- if (n !== 0)
- r = Z_OK;
- else {
- s.bitb = b;
- s.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- s.write = q;
- return s.inflate_flush(z, r);
- }
- n--;
- b |= (z.read_byte(p++) & 0xff) << k;
- k += 8;
- }
- dist += (b & inflate_mask[j]);
- b >>= j;
- k -= j;
- mode = COPY;
- case COPY: // o: copying bytes in window, waiting for space
- f = q - dist;
- while (f < 0) { // modulo window size-"while" instead
- f += s.end; // of "if" handles invalid distances
- }
- while (len !== 0) {
- if (m === 0) {
- if (q == s.end && s.read !== 0) {
- q = 0;
- m = q < s.read ? s.read - q - 1 : s.end - q;
- }
- if (m === 0) {
- s.write = q;
- r = s.inflate_flush(z, r);
- q = s.write;
- m = q < s.read ? s.read - q - 1 : s.end - q;
- if (q == s.end && s.read !== 0) {
- q = 0;
- m = q < s.read ? s.read - q - 1 : s.end - q;
- }
- if (m === 0) {
- s.bitb = b;
- s.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- s.write = q;
- return s.inflate_flush(z, r);
- }
- }
- }
- s.window[q++] = s.window[f++];
- m--;
- if (f == s.end)
- f = 0;
- len--;
- }
- mode = START;
- break;
- case LIT: // o: got literal, waiting for output space
- if (m === 0) {
- if (q == s.end && s.read !== 0) {
- q = 0;
- m = q < s.read ? s.read - q - 1 : s.end - q;
- }
- if (m === 0) {
- s.write = q;
- r = s.inflate_flush(z, r);
- q = s.write;
- m = q < s.read ? s.read - q - 1 : s.end - q;
- if (q == s.end && s.read !== 0) {
- q = 0;
- m = q < s.read ? s.read - q - 1 : s.end - q;
- }
- if (m === 0) {
- s.bitb = b;
- s.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- s.write = q;
- return s.inflate_flush(z, r);
- }
- }
- }
- r = Z_OK;
- s.window[q++] = /* (byte) */lit;
- m--;
- mode = START;
- break;
- case WASH: // o: got eob, possibly more output
- if (k > 7) { // return unused byte, if any
- k -= 8;
- n++;
- p--; // can always return one
- }
- s.write = q;
- r = s.inflate_flush(z, r);
- q = s.write;
- m = q < s.read ? s.read - q - 1 : s.end - q;
- if (s.read != s.write) {
- s.bitb = b;
- s.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- s.write = q;
- return s.inflate_flush(z, r);
- }
- mode = END;
- case END:
- r = Z_STREAM_END;
- s.bitb = b;
- s.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- s.write = q;
- return s.inflate_flush(z, r);
- case BADCODE: // x: got error
- r = Z_DATA_ERROR;
- s.bitb = b;
- s.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- s.write = q;
- return s.inflate_flush(z, r);
- default:
- r = Z_STREAM_ERROR;
- s.bitb = b;
- s.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- s.write = q;
- return s.inflate_flush(z, r);
- }
- }
- };
- that.free = function() {
- // ZFREE(z, c);
- };
- }
- // InfBlocks
- // Table for deflate from PKZIP's appnote.txt.
- var border = [ // Order of the bit length code lengths
- 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 ];
- var TYPE = 0; // get type bits (3, including end bit)
- var LENS = 1; // get lengths for stored
- var STORED = 2;// processing stored block
- var TABLE = 3; // get table lengths
- var BTREE = 4; // get bit lengths tree for a dynamic
- // block
- var DTREE = 5; // get length, distance trees for a
- // dynamic block
- var CODES = 6; // processing fixed or dynamic block
- var DRY = 7; // output remaining window bytes
- var DONELOCKS = 8; // finished last block, done
- var BADBLOCKS = 9; // ot a data error--stuck here
- function InfBlocks(z, w) {
- var that = this;
- var mode = TYPE; // current inflate_block mode
- var left = 0; // if STORED, bytes left to copy
- var table = 0; // table lengths (14 bits)
- var index = 0; // index into blens (or border)
- var blens; // bit lengths of codes
- var bb = [ 0 ]; // bit length tree depth
- var tb = [ 0 ]; // bit length decoding tree
- var codes = new InfCodes(); // if CODES, current state
- var last = 0; // true if this block is the last block
- var hufts = new Int32Array(MANY * 3); // single malloc for tree space
- var check = 0; // check on output
- var inftree = new InfTree();
- that.bitk = 0; // bits in bit buffer
- that.bitb = 0; // bit buffer
- that.window = new Uint8Array(w); // sliding window
- that.end = w; // one byte after sliding window
- that.read = 0; // window read pointer
- that.write = 0; // window write pointer
- that.reset = function(z, c) {
- if (c)
- c[0] = check;
- // if (mode == BTREE || mode == DTREE) {
- // }
- if (mode == CODES) {
- codes.free(z);
- }
- mode = TYPE;
- that.bitk = 0;
- that.bitb = 0;
- that.read = that.write = 0;
- };
- that.reset(z, null);
- // copy as much as possible from the sliding window to the output area
- that.inflate_flush = function(z, r) {
- var n;
- var p;
- var q;
- // local copies of source and destination pointers
- p = z.next_out_index;
- q = that.read;
- // compute number of bytes to copy as far as end of window
- n = /* (int) */((q <= that.write ? that.write : that.end) - q);
- if (n > z.avail_out)
- n = z.avail_out;
- if (n !== 0 && r == Z_BUF_ERROR)
- r = Z_OK;
- // update counters
- z.avail_out -= n;
- z.total_out += n;
- // copy as far as end of window
- z.next_out.set(that.window.subarray(q, q + n), p);
- p += n;
- q += n;
- // see if more to copy at beginning of window
- if (q == that.end) {
- // wrap pointers
- q = 0;
- if (that.write == that.end)
- that.write = 0;
- // compute bytes to copy
- n = that.write - q;
- if (n > z.avail_out)
- n = z.avail_out;
- if (n !== 0 && r == Z_BUF_ERROR)
- r = Z_OK;
- // update counters
- z.avail_out -= n;
- z.total_out += n;
- // copy
- z.next_out.set(that.window.subarray(q, q + n), p);
- p += n;
- q += n;
- }
- // update pointers
- z.next_out_index = p;
- that.read = q;
- // done
- return r;
- };
- that.proc = function(z, r) {
- var t; // temporary storage
- var b; // bit buffer
- var k; // bits in bit buffer
- var p; // input data pointer
- var n; // bytes available there
- var q; // output window write pointer
- var m; // bytes to end of window or read pointer
- var i;
- // copy input/output information to locals (UPDATE macro restores)
- // {
- p = z.next_in_index;
- n = z.avail_in;
- b = that.bitb;
- k = that.bitk;
- // }
- // {
- q = that.write;
- m = /* (int) */(q < that.read ? that.read - q - 1 : that.end - q);
- // }
- // process input based on current state
- // DEBUG dtree
- while (true) {
- switch (mode) {
- case TYPE:
- while (k < (3)) {
- if (n !== 0) {
- r = Z_OK;
- } else {
- that.bitb = b;
- that.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- that.write = q;
- return that.inflate_flush(z, r);
- }
- n--;
- b |= (z.read_byte(p++) & 0xff) << k;
- k += 8;
- }
- t = /* (int) */(b & 7);
- last = t & 1;
- switch (t >>> 1) {
- case 0: // stored
- // {
- b >>>= (3);
- k -= (3);
- // }
- t = k & 7; // go to byte boundary
- // {
- b >>>= (t);
- k -= (t);
- // }
- mode = LENS; // get length of stored block
- break;
- case 1: // fixed
- // {
- var bl = []; // new Array(1);
- var bd = []; // new Array(1);
- var tl = [ [] ]; // new Array(1);
- var td = [ [] ]; // new Array(1);
- InfTree.inflate_trees_fixed(bl, bd, tl, td);
- codes.init(bl[0], bd[0], tl[0], 0, td[0], 0);
- // }
- // {
- b >>>= (3);
- k -= (3);
- // }
- mode = CODES;
- break;
- case 2: // dynamic
- // {
- b >>>= (3);
- k -= (3);
- // }
- mode = TABLE;
- break;
- case 3: // illegal
- // {
- b >>>= (3);
- k -= (3);
- // }
- mode = BADBLOCKS;
- z.msg = "invalid block type";
- r = Z_DATA_ERROR;
- that.bitb = b;
- that.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- that.write = q;
- return that.inflate_flush(z, r);
- }
- break;
- case LENS:
- while (k < (32)) {
- if (n !== 0) {
- r = Z_OK;
- } else {
- that.bitb = b;
- that.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- that.write = q;
- return that.inflate_flush(z, r);
- }
- n--;
- b |= (z.read_byte(p++) & 0xff) << k;
- k += 8;
- }
- if ((((~b) >>> 16) & 0xffff) != (b & 0xffff)) {
- mode = BADBLOCKS;
- z.msg = "invalid stored block lengths";
- r = Z_DATA_ERROR;
- that.bitb = b;
- that.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- that.write = q;
- return that.inflate_flush(z, r);
- }
- left = (b & 0xffff);
- b = k = 0; // dump bits
- mode = left !== 0 ? STORED : (last !== 0 ? DRY : TYPE);
- break;
- case STORED:
- if (n === 0) {
- that.bitb = b;
- that.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- that.write = q;
- return that.inflate_flush(z, r);
- }
- if (m === 0) {
- if (q == that.end && that.read !== 0) {
- q = 0;
- m = /* (int) */(q < that.read ? that.read - q - 1 : that.end - q);
- }
- if (m === 0) {
- that.write = q;
- r = that.inflate_flush(z, r);
- q = that.write;
- m = /* (int) */(q < that.read ? that.read - q - 1 : that.end - q);
- if (q == that.end && that.read !== 0) {
- q = 0;
- m = /* (int) */(q < that.read ? that.read - q - 1 : that.end - q);
- }
- if (m === 0) {
- that.bitb = b;
- that.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- that.write = q;
- return that.inflate_flush(z, r);
- }
- }
- }
- r = Z_OK;
- t = left;
- if (t > n)
- t = n;
- if (t > m)
- t = m;
- that.window.set(z.read_buf(p, t), q);
- p += t;
- n -= t;
- q += t;
- m -= t;
- if ((left -= t) !== 0)
- break;
- mode = last !== 0 ? DRY : TYPE;
- break;
- case TABLE:
- while (k < (14)) {
- if (n !== 0) {
- r = Z_OK;
- } else {
- that.bitb = b;
- that.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- that.write = q;
- return that.inflate_flush(z, r);
- }
- n--;
- b |= (z.read_byte(p++) & 0xff) << k;
- k += 8;
- }
- table = t = (b & 0x3fff);
- if ((t & 0x1f) > 29 || ((t >> 5) & 0x1f) > 29) {
- mode = BADBLOCKS;
- z.msg = "too many length or distance symbols";
- r = Z_DATA_ERROR;
- that.bitb = b;
- that.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- that.write = q;
- return that.inflate_flush(z, r);
- }
- t = 258 + (t & 0x1f) + ((t >> 5) & 0x1f);
- if (!blens || blens.length < t) {
- blens = []; // new Array(t);
- } else {
- for (i = 0; i < t; i++) {
- blens[i] = 0;
- }
- }
- // {
- b >>>= (14);
- k -= (14);
- // }
- index = 0;
- mode = BTREE;
- case BTREE:
- while (index < 4 + (table >>> 10)) {
- while (k < (3)) {
- if (n !== 0) {
- r = Z_OK;
- } else {
- that.bitb = b;
- that.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- that.write = q;
- return that.inflate_flush(z, r);
- }
- n--;
- b |= (z.read_byte(p++) & 0xff) << k;
- k += 8;
- }
- blens[border[index++]] = b & 7;
- // {
- b >>>= (3);
- k -= (3);
- // }
- }
- while (index < 19) {
- blens[border[index++]] = 0;
- }
- bb[0] = 7;
- t = inftree.inflate_trees_bits(blens, bb, tb, hufts, z);
- if (t != Z_OK) {
- r = t;
- if (r == Z_DATA_ERROR) {
- blens = null;
- mode = BADBLOCKS;
- }
- that.bitb = b;
- that.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- that.write = q;
- return that.inflate_flush(z, r);
- }
- index = 0;
- mode = DTREE;
- case DTREE:
- while (true) {
- t = table;
- if (!(index < 258 + (t & 0x1f) + ((t >> 5) & 0x1f))) {
- break;
- }
- var j, c;
- t = bb[0];
- while (k < (t)) {
- if (n !== 0) {
- r = Z_OK;
- } else {
- that.bitb = b;
- that.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- that.write = q;
- return that.inflate_flush(z, r);
- }
- n--;
- b |= (z.read_byte(p++) & 0xff) << k;
- k += 8;
- }
- // if (tb[0] == -1) {
- // System.err.println("null...");
- // }
- t = hufts[(tb[0] + (b & inflate_mask[t])) * 3 + 1];
- c = hufts[(tb[0] + (b & inflate_mask[t])) * 3 + 2];
- if (c < 16) {
- b >>>= (t);
- k -= (t);
- blens[index++] = c;
- } else { // c == 16..18
- i = c == 18 ? 7 : c - 14;
- j = c == 18 ? 11 : 3;
- while (k < (t + i)) {
- if (n !== 0) {
- r = Z_OK;
- } else {
- that.bitb = b;
- that.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- that.write = q;
- return that.inflate_flush(z, r);
- }
- n--;
- b |= (z.read_byte(p++) & 0xff) << k;
- k += 8;
- }
- b >>>= (t);
- k -= (t);
- j += (b & inflate_mask[i]);
- b >>>= (i);
- k -= (i);
- i = index;
- t = table;
- if (i + j > 258 + (t & 0x1f) + ((t >> 5) & 0x1f) || (c == 16 && i < 1)) {
- blens = null;
- mode = BADBLOCKS;
- z.msg = "invalid bit length repeat";
- r = Z_DATA_ERROR;
- that.bitb = b;
- that.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- that.write = q;
- return that.inflate_flush(z, r);
- }
- c = c == 16 ? blens[i - 1] : 0;
- do {
- blens[i++] = c;
- } while (--j !== 0);
- index = i;
- }
- }
- tb[0] = -1;
- // {
- var bl_ = []; // new Array(1);
- var bd_ = []; // new Array(1);
- var tl_ = []; // new Array(1);
- var td_ = []; // new Array(1);
- bl_[0] = 9; // must be <= 9 for lookahead assumptions
- bd_[0] = 6; // must be <= 9 for lookahead assumptions
- t = table;
- t = inftree.inflate_trees_dynamic(257 + (t & 0x1f), 1 + ((t >> 5) & 0x1f), blens, bl_, bd_, tl_, td_, hufts, z);
- if (t != Z_OK) {
- if (t == Z_DATA_ERROR) {
- blens = null;
- mode = BADBLOCKS;
- }
- r = t;
- that.bitb = b;
- that.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- that.write = q;
- return that.inflate_flush(z, r);
- }
- codes.init(bl_[0], bd_[0], hufts, tl_[0], hufts, td_[0]);
- // }
- mode = CODES;
- case CODES:
- that.bitb = b;
- that.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- that.write = q;
- if ((r = codes.proc(that, z, r)) != Z_STREAM_END) {
- return that.inflate_flush(z, r);
- }
- r = Z_OK;
- codes.free(z);
- p = z.next_in_index;
- n = z.avail_in;
- b = that.bitb;
- k = that.bitk;
- q = that.write;
- m = /* (int) */(q < that.read ? that.read - q - 1 : that.end - q);
- if (last === 0) {
- mode = TYPE;
- break;
- }
- mode = DRY;
- case DRY:
- that.write = q;
- r = that.inflate_flush(z, r);
- q = that.write;
- m = /* (int) */(q < that.read ? that.read - q - 1 : that.end - q);
- if (that.read != that.write) {
- that.bitb = b;
- that.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- that.write = q;
- return that.inflate_flush(z, r);
- }
- mode = DONELOCKS;
- case DONELOCKS:
- r = Z_STREAM_END;
- that.bitb = b;
- that.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- that.write = q;
- return that.inflate_flush(z, r);
- case BADBLOCKS:
- r = Z_DATA_ERROR;
- that.bitb = b;
- that.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- that.write = q;
- return that.inflate_flush(z, r);
- default:
- r = Z_STREAM_ERROR;
- that.bitb = b;
- that.bitk = k;
- z.avail_in = n;
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- that.write = q;
- return that.inflate_flush(z, r);
- }
- }
- };
- that.free = function(z) {
- that.reset(z, null);
- that.window = null;
- hufts = null;
- // ZFREE(z, s);
- };
- that.set_dictionary = function(d, start, n) {
- that.window.set(d.subarray(start, start + n), 0);
- that.read = that.write = n;
- };
- // Returns true if inflate is currently at the end of a block generated
- // by Z_SYNC_FLUSH or Z_FULL_FLUSH.
- that.sync_point = function() {
- return mode == LENS ? 1 : 0;
- };
- }
- // Inflate
- // preset dictionary flag in zlib header
- var PRESET_DICT = 0x20;
- var Z_DEFLATED = 8;
- var METHOD = 0; // waiting for method byte
- var FLAG = 1; // waiting for flag byte
- var DICT4 = 2; // four dictionary check bytes to go
- var DICT3 = 3; // three dictionary check bytes to go
- var DICT2 = 4; // two dictionary check bytes to go
- var DICT1 = 5; // one dictionary check byte to go
- var DICT0 = 6; // waiting for inflateSetDictionary
- var BLOCKS = 7; // decompressing blocks
- var DONE = 12; // finished check, done
- var BAD = 13; // got an error--stay here
- var mark = [ 0, 0, 0xff, 0xff ];
- function Inflate() {
- var that = this;
- that.mode = 0; // current inflate mode
- // mode dependent information
- that.method = 0; // if FLAGS, method byte
- // if CHECK, check values to compare
- that.was = [ 0 ]; // new Array(1); // computed check value
- that.need = 0; // stream check value
- // if BAD, inflateSync's marker bytes count
- that.marker = 0;
- // mode independent information
- that.wbits = 0; // log2(window size) (8..15, defaults to 15)
- // this.blocks; // current inflate_blocks state
- function inflateReset(z) {
- if (!z || !z.istate)
- return Z_STREAM_ERROR;
- z.total_in = z.total_out = 0;
- z.msg = null;
- z.istate.mode = BLOCKS;
- z.istate.blocks.reset(z, null);
- return Z_OK;
- }
- that.inflateEnd = function(z) {
- if (that.blocks)
- that.blocks.free(z);
- that.blocks = null;
- // ZFREE(z, z->state);
- return Z_OK;
- };
- that.inflateInit = function(z, w) {
- z.msg = null;
- that.blocks = null;
- // set window size
- if (w < 8 || w > 15) {
- that.inflateEnd(z);
- return Z_STREAM_ERROR;
- }
- that.wbits = w;
- z.istate.blocks = new InfBlocks(z, 1 << w);
- // reset state
- inflateReset(z);
- return Z_OK;
- };
- that.inflate = function(z, f) {
- var r;
- var b;
- if (!z || !z.istate || !z.next_in)
- return Z_STREAM_ERROR;
- f = f == Z_FINISH ? Z_BUF_ERROR : Z_OK;
- r = Z_BUF_ERROR;
- while (true) {
- // System.out.println("mode: "+z.istate.mode);
- switch (z.istate.mode) {
- case METHOD:
- if (z.avail_in === 0)
- return r;
- r = f;
- z.avail_in--;
- z.total_in++;
- if (((z.istate.method = z.read_byte(z.next_in_index++)) & 0xf) != Z_DEFLATED) {
- z.istate.mode = BAD;
- z.msg = "unknown compression method";
- z.istate.marker = 5; // can't try inflateSync
- break;
- }
- if ((z.istate.method >> 4) + 8 > z.istate.wbits) {
- z.istate.mode = BAD;
- z.msg = "invalid window size";
- z.istate.marker = 5; // can't try inflateSync
- break;
- }
- z.istate.mode = FLAG;
- case FLAG:
- if (z.avail_in === 0)
- return r;
- r = f;
- z.avail_in--;
- z.total_in++;
- b = (z.read_byte(z.next_in_index++)) & 0xff;
- if ((((z.istate.method << 8) + b) % 31) !== 0) {
- z.istate.mode = BAD;
- z.msg = "incorrect header check";
- z.istate.marker = 5; // can't try inflateSync
- break;
- }
- if ((b & PRESET_DICT) === 0) {
- z.istate.mode = BLOCKS;
- break;
- }
- z.istate.mode = DICT4;
- case DICT4:
- if (z.avail_in === 0)
- return r;
- r = f;
- z.avail_in--;
- z.total_in++;
- z.istate.need = ((z.read_byte(z.next_in_index++) & 0xff) << 24) & 0xff000000;
- z.istate.mode = DICT3;
- case DICT3:
- if (z.avail_in === 0)
- return r;
- r = f;
- z.avail_in--;
- z.total_in++;
- z.istate.need += ((z.read_byte(z.next_in_index++) & 0xff) << 16) & 0xff0000;
- z.istate.mode = DICT2;
- case DICT2:
- if (z.avail_in === 0)
- return r;
- r = f;
- z.avail_in--;
- z.total_in++;
- z.istate.need += ((z.read_byte(z.next_in_index++) & 0xff) << 8) & 0xff00;
- z.istate.mode = DICT1;
- case DICT1:
- if (z.avail_in === 0)
- return r;
- r = f;
- z.avail_in--;
- z.total_in++;
- z.istate.need += (z.read_byte(z.next_in_index++) & 0xff);
- z.istate.mode = DICT0;
- return Z_NEED_DICT;
- case DICT0:
- z.istate.mode = BAD;
- z.msg = "need dictionary";
- z.istate.marker = 0; // can try inflateSync
- return Z_STREAM_ERROR;
- case BLOCKS:
- r = z.istate.blocks.proc(z, r);
- if (r == Z_DATA_ERROR) {
- z.istate.mode = BAD;
- z.istate.marker = 0; // can try inflateSync
- break;
- }
- if (r == Z_OK) {
- r = f;
- }
- if (r != Z_STREAM_END) {
- return r;
- }
- r = f;
- z.istate.blocks.reset(z, z.istate.was);
- z.istate.mode = DONE;
- case DONE:
- return Z_STREAM_END;
- case BAD:
- return Z_DATA_ERROR;
- default:
- return Z_STREAM_ERROR;
- }
- }
- };
- that.inflateSetDictionary = function(z, dictionary, dictLength) {
- var index = 0;
- var length = dictLength;
- if (!z || !z.istate || z.istate.mode != DICT0)
- return Z_STREAM_ERROR;
- if (length >= (1 << z.istate.wbits)) {
- length = (1 << z.istate.wbits) - 1;
- index = dictLength - length;
- }
- z.istate.blocks.set_dictionary(dictionary, index, length);
- z.istate.mode = BLOCKS;
- return Z_OK;
- };
- that.inflateSync = function(z) {
- var n; // number of bytes to look at
- var p; // pointer to bytes
- var m; // number of marker bytes found in a row
- var r, w; // temporaries to save total_in and total_out
- // set up
- if (!z || !z.istate)
- return Z_STREAM_ERROR;
- if (z.istate.mode != BAD) {
- z.istate.mode = BAD;
- z.istate.marker = 0;
- }
- if ((n = z.avail_in) === 0)
- return Z_BUF_ERROR;
- p = z.next_in_index;
- m = z.istate.marker;
- // search
- while (n !== 0 && m < 4) {
- if (z.read_byte(p) == mark[m]) {
- m++;
- } else if (z.read_byte(p) !== 0) {
- m = 0;
- } else {
- m = 4 - m;
- }
- p++;
- n--;
- }
- // restore
- z.total_in += p - z.next_in_index;
- z.next_in_index = p;
- z.avail_in = n;
- z.istate.marker = m;
- // return no joy or set up to restart on a new block
- if (m != 4) {
- return Z_DATA_ERROR;
- }
- r = z.total_in;
- w = z.total_out;
- inflateReset(z);
- z.total_in = r;
- z.total_out = w;
- z.istate.mode = BLOCKS;
- return Z_OK;
- };
- // Returns true if inflate is currently at the end of a block generated
- // by Z_SYNC_FLUSH or Z_FULL_FLUSH. This function is used by one PPP
- // implementation to provide an additional safety check. PPP uses
- // Z_SYNC_FLUSH
- // but removes the length bytes of the resulting empty stored block. When
- // decompressing, PPP checks that at the end of input packet, inflate is
- // waiting for these length bytes.
- that.inflateSyncPoint = function(z) {
- if (!z || !z.istate || !z.istate.blocks)
- return Z_STREAM_ERROR;
- return z.istate.blocks.sync_point();
- };
- }
- // ZStream
- function ZStream() {
- }
- ZStream.prototype = {
- inflateInit : function(bits) {
- var that = this;
- that.istate = new Inflate();
- if (!bits)
- bits = MAX_BITS;
- return that.istate.inflateInit(that, bits);
- },
- inflate : function(f) {
- var that = this;
- if (!that.istate)
- return Z_STREAM_ERROR;
- return that.istate.inflate(that, f);
- },
- inflateEnd : function() {
- var that = this;
- if (!that.istate)
- return Z_STREAM_ERROR;
- var ret = that.istate.inflateEnd(that);
- that.istate = null;
- return ret;
- },
- inflateSync : function() {
- var that = this;
- if (!that.istate)
- return Z_STREAM_ERROR;
- return that.istate.inflateSync(that);
- },
- inflateSetDictionary : function(dictionary, dictLength) {
- var that = this;
- if (!that.istate)
- return Z_STREAM_ERROR;
- return that.istate.inflateSetDictionary(that, dictionary, dictLength);
- },
- read_byte : function(start) {
- var that = this;
- return that.next_in.subarray(start, start + 1)[0];
- },
- read_buf : function(start, size) {
- var that = this;
- return that.next_in.subarray(start, start + size);
- }
- };
- // Inflater
- function Inflater() {
- var that = this;
- var z = new ZStream();
- var bufsize = 512;
- var flush = Z_NO_FLUSH;
- var buf = new Uint8Array(bufsize);
- var nomoreinput = false;
- z.inflateInit();
- z.next_out = buf;
- that.append = function(data, onprogress) {
- var err, buffers = [], lastIndex = 0, bufferIndex = 0, bufferSize = 0, array;
- if (data.length === 0)
- return;
- z.next_in_index = 0;
- z.next_in = data;
- z.avail_in = data.length;
- do {
- z.next_out_index = 0;
- z.avail_out = bufsize;
- if ((z.avail_in === 0) && (!nomoreinput)) { // if buffer is empty and more input is available, refill it
- z.next_in_index = 0;
- nomoreinput = true;
- }
- err = z.inflate(flush);
- if (nomoreinput && (err == Z_BUF_ERROR))
- return -1;
- if (err != Z_OK && err != Z_STREAM_END)
- throw "inflating: " + z.msg;
- if ((nomoreinput || err == Z_STREAM_END) && (z.avail_in == data.length))
- return -1;
- if (z.next_out_index)
- if (z.next_out_index == bufsize)
- buffers.push(new Uint8Array(buf));
- else
- buffers.push(new Uint8Array(buf.subarray(0, z.next_out_index)));
- bufferSize += z.next_out_index;
- if (onprogress && z.next_in_index > 0 && z.next_in_index != lastIndex) {
- onprogress(z.next_in_index);
- lastIndex = z.next_in_index;
- }
- } while (z.avail_in > 0 || z.avail_out === 0);
- array = new Uint8Array(bufferSize);
- buffers.forEach(function(chunk) {
- array.set(chunk, bufferIndex);
- bufferIndex += chunk.length;
- });
- return array;
- };
- that.flush = function() {
- z.inflateEnd();
- };
- }
- var inflater;
- if (obj.zip)
- obj.zip.Inflater = Inflater;
- else {
- inflater = new Inflater();
- obj.addEventListener("message", function(event) {
- var message = event.data;
- if (message.append)
- obj.postMessage({
- onappend : true,
- data : inflater.append(message.data, function(current) {
- obj.postMessage({
- progress : true,
- current : current
- });
- })
- });
- if (message.flush) {
- inflater.flush();
- obj.postMessage({
- onflush : true
- });
- }
- }, false);
- }
- })(this);
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