- //Source code from https://gildas-lormeau.github.io/zip.js/
- //源码来自https://gildas-lormeau.github.io/zip.js/
- (function (global, factory) {
- typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
- typeof define === 'function' && define.amd ? define(['exports'], factory) :
- (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.zip = {}));
- })(this, (function (exports) { 'use strict';
-
- const { Array, Object, String, BigInt, Math, Date, Map, URL, Error, Uint8Array, Uint16Array, Uint32Array, DataView, Blob, Promise, TextEncoder, TextDecoder, FileReader, document, crypto, btoa } = globalThis;
-
- /*
- Copyright (c) 2022 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.
- */
-
- // Global
-
- const MAX_BITS$1 = 15;
- const D_CODES = 30;
- const BL_CODES = 19;
-
- const LENGTH_CODES = 29;
- const LITERALS = 256;
- const L_CODES = (LITERALS + 1 + LENGTH_CODES);
- const HEAP_SIZE = (2 * L_CODES + 1);
-
- const END_BLOCK = 256;
-
- // Bit length codes must not exceed MAX_BL_BITS bits
- const MAX_BL_BITS = 7;
-
- // repeat previous bit length 3-6 times (2 bits of repeat count)
- const REP_3_6 = 16;
-
- // repeat a zero length 3-10 times (3 bits of repeat count)
- const REPZ_3_10 = 17;
-
- // repeat a zero length 11-138 times (7 bits of repeat count)
- const REPZ_11_138 = 18;
-
- // The lengths of the bit length codes are sent in order of decreasing
- // probability, to avoid transmitting the lengths for unused bit
- // length codes.
-
- const Buf_size = 8 * 2;
-
- // JZlib version : "1.0.2"
- const Z_DEFAULT_COMPRESSION = -1;
-
- // compression strategy
- const Z_FILTERED = 1;
- const Z_HUFFMAN_ONLY = 2;
- const Z_DEFAULT_STRATEGY = 0;
-
- const Z_NO_FLUSH$1 = 0;
- const Z_PARTIAL_FLUSH = 1;
- const Z_FULL_FLUSH = 3;
- const Z_FINISH$1 = 4;
-
- const Z_OK$1 = 0;
- const Z_STREAM_END$1 = 1;
- const Z_NEED_DICT$1 = 2;
- const Z_STREAM_ERROR$1 = -2;
- const Z_DATA_ERROR$1 = -3;
- const Z_BUF_ERROR$1 = -5;
-
- // Tree
-
- function extractArray(array) {
- return flatArray(array.map(([length, value]) => (new Array(length)).fill(value, 0, length)));
- }
-
- function flatArray(array) {
- return array.reduce((a, b) => a.concat(Array.isArray(b) ? flatArray(b) : b), []);
- }
-
- // see definition of array dist_code below
- const _dist_code = [0, 1, 2, 3].concat(...extractArray([
- [2, 4], [2, 5], [4, 6], [4, 7], [8, 8], [8, 9], [16, 10], [16, 11], [32, 12], [32, 13], [64, 14], [64, 15], [2, 0], [1, 16],
- [1, 17], [2, 18], [2, 19], [4, 20], [4, 21], [8, 22], [8, 23], [16, 24], [16, 25], [32, 26], [32, 27], [64, 28], [64, 29]
- ]));
-
- function Tree() {
- const that = this;
-
- // dyn_tree; // the dynamic tree
- // max_code; // largest code with non zero frequency
- // stat_desc; // the corresponding static tree
-
- // Compute the optimal bit lengths for a tree and update the total bit
- // length
- // for the current block.
- // IN assertion: the fields freq and dad are set, heap[heap_max] and
- // above are the tree nodes sorted by increasing frequency.
- // OUT assertions: the field len is set to the optimal bit length, the
- // array bl_count contains the frequencies for each bit length.
- // The length opt_len is updated; static_len is also updated if stree is
- // not null.
- function gen_bitlen(s) {
- const tree = that.dyn_tree;
- const stree = that.stat_desc.static_tree;
- const extra = that.stat_desc.extra_bits;
- const base = that.stat_desc.extra_base;
- const max_length = that.stat_desc.max_length;
- let h; // heap index
- let n, m; // iterate over the tree elements
- let bits; // bit length
- let xbits; // extra bits
- let f; // frequency
- let overflow = 0; // number of elements with bit length too large
-
- for (bits = 0; bits <= MAX_BITS$1; bits++)
- s.bl_count[bits] = 0;
-
- // In a first pass, compute the optimal bit lengths (which may
- // overflow in the case of the bit length tree).
- tree[s.heap[s.heap_max] * 2 + 1] = 0; // root of the heap
-
- for (h = s.heap_max + 1; h < HEAP_SIZE; h++) {
- n = s.heap[h];
- bits = tree[tree[n * 2 + 1] * 2 + 1] + 1;
- if (bits > max_length) {
- bits = max_length;
- overflow++;
- }
- tree[n * 2 + 1] = bits;
- // We overwrite tree[n*2+1] which is no longer needed
-
- if (n > that.max_code)
- continue; // not a leaf node
-
- s.bl_count[bits]++;
- xbits = 0;
- if (n >= base)
- xbits = extra[n - base];
- f = tree[n * 2];
- s.opt_len += f * (bits + xbits);
- if (stree)
- s.static_len += f * (stree[n * 2 + 1] + xbits);
- }
- if (overflow === 0)
- return;
-
- // This happens for example on obj2 and pic of the Calgary corpus
- // Find the first bit length which could increase:
- do {
- bits = max_length - 1;
- while (s.bl_count[bits] === 0)
- bits--;
- s.bl_count[bits]--; // move one leaf down the tree
- s.bl_count[bits + 1] += 2; // move one overflow item as its brother
- s.bl_count[max_length]--;
- // The brother of the overflow item also moves one step up,
- // but this does not affect bl_count[max_length]
- overflow -= 2;
- } while (overflow > 0);
-
- for (bits = max_length; bits !== 0; bits--) {
- n = s.bl_count[bits];
- while (n !== 0) {
- m = s.heap[--h];
- if (m > that.max_code)
- continue;
- if (tree[m * 2 + 1] != bits) {
- s.opt_len += (bits - tree[m * 2 + 1]) * tree[m * 2];
- tree[m * 2 + 1] = bits;
- }
- n--;
- }
- }
- }
-
- // Reverse the first len bits of a code, using straightforward code (a
- // faster
- // method would use a table)
- // IN assertion: 1 <= len <= 15
- function bi_reverse(code, // the value to invert
- len // its bit length
- ) {
- let res = 0;
- do {
- res |= code & 1;
- code >>>= 1;
- res <<= 1;
- } while (--len > 0);
- return res >>> 1;
- }
-
- // Generate the codes for a given tree and bit counts (which need not be
- // optimal).
- // IN assertion: the array bl_count contains the bit length statistics for
- // the given tree and the field len is set for all tree elements.
- // OUT assertion: the field code is set for all tree elements of non
- // zero code length.
- function gen_codes(tree, // the tree to decorate
- max_code, // largest code with non zero frequency
- bl_count // number of codes at each bit length
- ) {
- const next_code = []; // next code value for each
- // bit length
- let code = 0; // running code value
- let bits; // bit index
- let n; // code index
- let len;
-
- // The distribution counts are first used to generate the code values
- // without bit reversal.
- for (bits = 1; bits <= MAX_BITS$1; bits++) {
- next_code[bits] = code = ((code + bl_count[bits - 1]) << 1);
- }
-
- // Check that the bit counts in bl_count are consistent. The last code
- // must be all ones.
- // Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,
- // "inconsistent bit counts");
- // Tracev((stderr,"gen_codes: max_code %d ", max_code));
-
- for (n = 0; n <= max_code; n++) {
- len = tree[n * 2 + 1];
- if (len === 0)
- continue;
- // Now reverse the bits
- tree[n * 2] = bi_reverse(next_code[len]++, len);
- }
- }
-
- // Construct one Huffman tree and assigns the code bit strings and lengths.
- // Update the total bit length for the current block.
- // IN assertion: the field freq is set for all tree elements.
- // OUT assertions: the fields len and code are set to the optimal bit length
- // and corresponding code. The length opt_len is updated; static_len is
- // also updated if stree is not null. The field max_code is set.
- that.build_tree = function (s) {
- const tree = that.dyn_tree;
- const stree = that.stat_desc.static_tree;
- const elems = that.stat_desc.elems;
- let n, m; // iterate over heap elements
- let max_code = -1; // largest code with non zero frequency
- let node; // new node being created
-
- // Construct the initial heap, with least frequent element in
- // heap[1]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
- // heap[0] is not used.
- s.heap_len = 0;
- s.heap_max = HEAP_SIZE;
-
- for (n = 0; n < elems; n++) {
- if (tree[n * 2] !== 0) {
- s.heap[++s.heap_len] = max_code = n;
- s.depth[n] = 0;
- } else {
- tree[n * 2 + 1] = 0;
- }
- }
-
- // The pkzip format requires that at least one distance code exists,
- // and that at least one bit should be sent even if there is only one
- // possible code. So to avoid special checks later on we force at least
- // two codes of non zero frequency.
- while (s.heap_len < 2) {
- node = s.heap[++s.heap_len] = max_code < 2 ? ++max_code : 0;
- tree[node * 2] = 1;
- s.depth[node] = 0;
- s.opt_len--;
- if (stree)
- s.static_len -= stree[node * 2 + 1];
- // node is 0 or 1 so it does not have extra bits
- }
- that.max_code = max_code;
-
- // The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
- // establish sub-heaps of increasing lengths:
-
- for (n = Math.floor(s.heap_len / 2); n >= 1; n--)
- s.pqdownheap(tree, n);
-
- // Construct the Huffman tree by repeatedly combining the least two
- // frequent nodes.
-
- node = elems; // next internal node of the tree
- do {
- // n = node of least frequency
- n = s.heap[1];
- s.heap[1] = s.heap[s.heap_len--];
- s.pqdownheap(tree, 1);
- m = s.heap[1]; // m = node of next least frequency
-
- s.heap[--s.heap_max] = n; // keep the nodes sorted by frequency
- s.heap[--s.heap_max] = m;
-
- // Create a new node father of n and m
- tree[node * 2] = (tree[n * 2] + tree[m * 2]);
- s.depth[node] = Math.max(s.depth[n], s.depth[m]) + 1;
- tree[n * 2 + 1] = tree[m * 2 + 1] = node;
-
- // and insert the new node in the heap
- s.heap[1] = node++;
- s.pqdownheap(tree, 1);
- } while (s.heap_len >= 2);
-
- s.heap[--s.heap_max] = s.heap[1];
-
- // At this point, the fields freq and dad are set. We can now
- // generate the bit lengths.
-
- gen_bitlen(s);
-
- // The field len is now set, we can generate the bit codes
- gen_codes(tree, that.max_code, s.bl_count);
- };
-
- }
-
- Tree._length_code = [0, 1, 2, 3, 4, 5, 6, 7].concat(...extractArray([
- [2, 8], [2, 9], [2, 10], [2, 11], [4, 12], [4, 13], [4, 14], [4, 15], [8, 16], [8, 17], [8, 18], [8, 19],
- [16, 20], [16, 21], [16, 22], [16, 23], [32, 24], [32, 25], [32, 26], [31, 27], [1, 28]]));
-
- Tree.base_length = [0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 0];
-
- Tree.base_dist = [0, 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192, 256, 384, 512, 768, 1024, 1536, 2048, 3072, 4096, 6144, 8192, 12288, 16384,
- 24576];
-
- // Mapping from a distance to a distance code. dist is the distance - 1 and
- // must not have side effects. _dist_code[256] and _dist_code[257] are never
- // used.
- Tree.d_code = function (dist) {
- return ((dist) < 256 ? _dist_code[dist] : _dist_code[256 + ((dist) >>> 7)]);
- };
-
- // extra bits for each length code
- Tree.extra_lbits = [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];
-
- // extra bits for each distance code
- Tree.extra_dbits = [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];
-
- // extra bits for each bit length code
- Tree.extra_blbits = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 3, 7];
-
- Tree.bl_order = [16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15];
-
- // StaticTree
-
- function StaticTree(static_tree, extra_bits, extra_base, elems, max_length) {
- const that = this;
- that.static_tree = static_tree;
- that.extra_bits = extra_bits;
- that.extra_base = extra_base;
- that.elems = elems;
- that.max_length = max_length;
- }
-
- const static_ltree2_first_part = [12, 140, 76, 204, 44, 172, 108, 236, 28, 156, 92, 220, 60, 188, 124, 252, 2, 130, 66, 194, 34, 162, 98, 226, 18, 146, 82,
- 210, 50, 178, 114, 242, 10, 138, 74, 202, 42, 170, 106, 234, 26, 154, 90, 218, 58, 186, 122, 250, 6, 134, 70, 198, 38, 166, 102, 230, 22, 150, 86,
- 214, 54, 182, 118, 246, 14, 142, 78, 206, 46, 174, 110, 238, 30, 158, 94, 222, 62, 190, 126, 254, 1, 129, 65, 193, 33, 161, 97, 225, 17, 145, 81,
- 209, 49, 177, 113, 241, 9, 137, 73, 201, 41, 169, 105, 233, 25, 153, 89, 217, 57, 185, 121, 249, 5, 133, 69, 197, 37, 165, 101, 229, 21, 149, 85,
- 213, 53, 181, 117, 245, 13, 141, 77, 205, 45, 173, 109, 237, 29, 157, 93, 221, 61, 189, 125, 253, 19, 275, 147, 403, 83, 339, 211, 467, 51, 307,
- 179, 435, 115, 371, 243, 499, 11, 267, 139, 395, 75, 331, 203, 459, 43, 299, 171, 427, 107, 363, 235, 491, 27, 283, 155, 411, 91, 347, 219, 475,
- 59, 315, 187, 443, 123, 379, 251, 507, 7, 263, 135, 391, 71, 327, 199, 455, 39, 295, 167, 423, 103, 359, 231, 487, 23, 279, 151, 407, 87, 343, 215,
- 471, 55, 311, 183, 439, 119, 375, 247, 503, 15, 271, 143, 399, 79, 335, 207, 463, 47, 303, 175, 431, 111, 367, 239, 495, 31, 287, 159, 415, 95,
- 351, 223, 479, 63, 319, 191, 447, 127, 383, 255, 511, 0, 64, 32, 96, 16, 80, 48, 112, 8, 72, 40, 104, 24, 88, 56, 120, 4, 68, 36, 100, 20, 84, 52,
- 116, 3, 131, 67, 195, 35, 163, 99, 227];
- const static_ltree2_second_part = extractArray([[144, 8], [112, 9], [24, 7], [8, 8]]);
- StaticTree.static_ltree = flatArray(static_ltree2_first_part.map((value, index) => [value, static_ltree2_second_part[index]]));
-
- const static_dtree_first_part = [0, 16, 8, 24, 4, 20, 12, 28, 2, 18, 10, 26, 6, 22, 14, 30, 1, 17, 9, 25, 5, 21, 13, 29, 3, 19, 11, 27, 7, 23];
- const static_dtree_second_part = extractArray([[30, 5]]);
- StaticTree.static_dtree = flatArray(static_dtree_first_part.map((value, index) => [value, static_dtree_second_part[index]]));
-
- StaticTree.static_l_desc = new StaticTree(StaticTree.static_ltree, Tree.extra_lbits, LITERALS + 1, L_CODES, MAX_BITS$1);
-
- StaticTree.static_d_desc = new StaticTree(StaticTree.static_dtree, Tree.extra_dbits, 0, D_CODES, MAX_BITS$1);
-
- StaticTree.static_bl_desc = new StaticTree(null, Tree.extra_blbits, 0, BL_CODES, MAX_BL_BITS);
-
- // Deflate
-
- const MAX_MEM_LEVEL = 9;
- const DEF_MEM_LEVEL = 8;
-
- function Config(good_length, max_lazy, nice_length, max_chain, func) {
- const that = this;
- that.good_length = good_length;
- that.max_lazy = max_lazy;
- that.nice_length = nice_length;
- that.max_chain = max_chain;
- that.func = func;
- }
-
- const STORED$1 = 0;
- const FAST = 1;
- const SLOW = 2;
- const config_table = [
- new Config(0, 0, 0, 0, STORED$1),
- new Config(4, 4, 8, 4, FAST),
- new Config(4, 5, 16, 8, FAST),
- new Config(4, 6, 32, 32, FAST),
- new Config(4, 4, 16, 16, SLOW),
- new Config(8, 16, 32, 32, SLOW),
- new Config(8, 16, 128, 128, SLOW),
- new Config(8, 32, 128, 256, SLOW),
- new Config(32, 128, 258, 1024, SLOW),
- new Config(32, 258, 258, 4096, SLOW)
- ];
-
- const z_errmsg = ["need dictionary", // Z_NEED_DICT
- // 2
- "stream end", // Z_STREAM_END 1
- "", // Z_OK 0
- "", // Z_ERRNO (-1)
- "stream error", // Z_STREAM_ERROR (-2)
- "data error", // Z_DATA_ERROR (-3)
- "", // Z_MEM_ERROR (-4)
- "buffer error", // Z_BUF_ERROR (-5)
- "",// Z_VERSION_ERROR (-6)
- ""];
-
- // block not completed, need more input or more output
- const NeedMore = 0;
-
- // block flush performed
- const BlockDone = 1;
-
- // finish started, need only more output at next deflate
- const FinishStarted = 2;
-
- // finish done, accept no more input or output
- const FinishDone = 3;
-
- // preset dictionary flag in zlib header
- const PRESET_DICT$1 = 0x20;
-
- const INIT_STATE = 42;
- const BUSY_STATE = 113;
- const FINISH_STATE = 666;
-
- // The deflate compression method
- const Z_DEFLATED$1 = 8;
-
- const STORED_BLOCK = 0;
- const STATIC_TREES = 1;
- const DYN_TREES = 2;
-
- const MIN_MATCH = 3;
- const MAX_MATCH = 258;
- const MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1);
-
- function smaller(tree, n, m, depth) {
- const tn2 = tree[n * 2];
- const tm2 = tree[m * 2];
- return (tn2 < tm2 || (tn2 == tm2 && depth[n] <= depth[m]));
- }
-
- function Deflate$1() {
-
- const that = this;
- let strm; // pointer back to this zlib stream
- let status; // as the name implies
- // pending_buf; // output still pending
- let pending_buf_size; // size of pending_buf
- // pending_out; // next pending byte to output to the stream
- // pending; // nb of bytes in the pending buffer
-
- // dist_buf; // buffer for distances
- // lc_buf; // buffer for literals or lengths
- // To simplify the code, dist_buf and lc_buf have the same number of elements.
- // To use different lengths, an extra flag array would be necessary.
-
- let last_flush; // value of flush param for previous deflate call
-
- let w_size; // LZ77 win size (32K by default)
- let w_bits; // log2(w_size) (8..16)
- let w_mask; // w_size - 1
-
- let win;
- // Sliding win. Input bytes are read into the second half of the win,
- // and move to the first half later to keep a dictionary of at least wSize
- // bytes. With this organization, matches are limited to a distance of
- // wSize-MAX_MATCH bytes, but this ensures that IO is always
- // performed with a length multiple of the block size. Also, it limits
- // the win size to 64K, which is quite useful on MSDOS.
- // To do: use the user input buffer as sliding win.
-
- let window_size;
- // Actual size of win: 2*wSize, except when the user input buffer
- // is directly used as sliding win.
-
- let prev;
- // Link to older string with same hash index. To limit the size of this
- // array to 64K, this link is maintained only for the last 32K strings.
- // An index in this array is thus a win index modulo 32K.
-
- let head; // Heads of the hash chains or NIL.
-
- let ins_h; // hash index of string to be inserted
- let hash_size; // number of elements in hash table
- let hash_bits; // log2(hash_size)
- let hash_mask; // hash_size-1
-
- // Number of bits by which ins_h must be shifted at each input
- // step. It must be such that after MIN_MATCH steps, the oldest
- // byte no longer takes part in the hash key, that is:
- // hash_shift * MIN_MATCH >= hash_bits
- let hash_shift;
-
- // Window position at the beginning of the current output block. Gets
- // negative when the win is moved backwards.
-
- let block_start;
-
- let match_length; // length of best match
- let prev_match; // previous match
- let match_available; // set if previous match exists
- let strstart; // start of string to insert
- let match_start; // start of matching string
- let lookahead; // number of valid bytes ahead in win
-
- // Length of the best match at previous step. Matches not greater than this
- // are discarded. This is used in the lazy match evaluation.
- let prev_length;
-
- // To speed up deflation, hash chains are never searched beyond this
- // length. A higher limit improves compression ratio but degrades the speed.
- let max_chain_length;
-
- // Attempt to find a better match only when the current match is strictly
- // smaller than this value. This mechanism is used only for compression
- // levels >= 4.
- let max_lazy_match;
-
- // Insert new strings in the hash table only if the match length is not
- // greater than this length. This saves time but degrades compression.
- // max_insert_length is used only for compression levels <= 3.
-
- let level; // compression level (1..9)
- let strategy; // favor or force Huffman coding
-
- // Use a faster search when the previous match is longer than this
- let good_match;
-
- // Stop searching when current match exceeds this
- let nice_match;
-
- let dyn_ltree; // literal and length tree
- let dyn_dtree; // distance tree
- let bl_tree; // Huffman tree for bit lengths
-
- const l_desc = new Tree(); // desc for literal tree
- const d_desc = new Tree(); // desc for distance tree
- const bl_desc = new Tree(); // desc for bit length tree
-
- // that.heap_len; // number of elements in the heap
- // that.heap_max; // element of largest frequency
- // The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
- // The same heap array is used to build all trees.
-
- // Depth of each subtree used as tie breaker for trees of equal frequency
- that.depth = [];
-
- // Size of match buffer for literals/lengths. There are 4 reasons for
- // limiting lit_bufsize to 64K:
- // - frequencies can be kept in 16 bit counters
- // - if compression is not successful for the first block, all input
- // data is still in the win so we can still emit a stored block even
- // when input comes from standard input. (This can also be done for
- // all blocks if lit_bufsize is not greater than 32K.)
- // - if compression is not successful for a file smaller than 64K, we can
- // even emit a stored file instead of a stored block (saving 5 bytes).
- // This is applicable only for zip (not gzip or zlib).
- // - creating new Huffman trees less frequently may not provide fast
- // adaptation to changes in the input data statistics. (Take for
- // example a binary file with poorly compressible code followed by
- // a highly compressible string table.) Smaller buffer sizes give
- // fast adaptation but have of course the overhead of transmitting
- // trees more frequently.
- // - I can't count above 4
- let lit_bufsize;
-
- let last_lit; // running index in dist_buf and lc_buf
-
- // that.opt_len; // bit length of current block with optimal trees
- // that.static_len; // bit length of current block with static trees
- let matches; // number of string matches in current block
- let last_eob_len; // bit length of EOB code for last block
-
- // Output buffer. bits are inserted starting at the bottom (least
- // significant bits).
- let bi_buf;
-
- // Number of valid bits in bi_buf. All bits above the last valid bit
- // are always zero.
- let bi_valid;
-
- // number of codes at each bit length for an optimal tree
- that.bl_count = [];
-
- // heap used to build the Huffman trees
- that.heap = [];
-
- dyn_ltree = [];
- dyn_dtree = [];
- bl_tree = [];
-
- function lm_init() {
- window_size = 2 * w_size;
-
- head[hash_size - 1] = 0;
- for (let i = 0; i < hash_size - 1; i++) {
- head[i] = 0;
- }
-
- // Set the default configuration parameters:
- max_lazy_match = config_table[level].max_lazy;
- good_match = config_table[level].good_length;
- nice_match = config_table[level].nice_length;
- max_chain_length = config_table[level].max_chain;
-
- strstart = 0;
- block_start = 0;
- lookahead = 0;
- match_length = prev_length = MIN_MATCH - 1;
- match_available = 0;
- ins_h = 0;
- }
-
- function init_block() {
- let i;
- // Initialize the trees.
- for (i = 0; i < L_CODES; i++)
- dyn_ltree[i * 2] = 0;
- for (i = 0; i < D_CODES; i++)
- dyn_dtree[i * 2] = 0;
- for (i = 0; i < BL_CODES; i++)
- bl_tree[i * 2] = 0;
-
- dyn_ltree[END_BLOCK * 2] = 1;
- that.opt_len = that.static_len = 0;
- last_lit = matches = 0;
- }
-
- // Initialize the tree data structures for a new zlib stream.
- function tr_init() {
-
- l_desc.dyn_tree = dyn_ltree;
- l_desc.stat_desc = StaticTree.static_l_desc;
-
- d_desc.dyn_tree = dyn_dtree;
- d_desc.stat_desc = StaticTree.static_d_desc;
-
- bl_desc.dyn_tree = bl_tree;
- bl_desc.stat_desc = StaticTree.static_bl_desc;
-
- bi_buf = 0;
- bi_valid = 0;
- last_eob_len = 8; // enough lookahead for inflate
-
- // Initialize the first block of the first file:
- init_block();
- }
-
- // Restore the heap property by moving down the tree starting at node k,
- // exchanging a node with the smallest of its two sons if necessary,
- // stopping
- // when the heap property is re-established (each father smaller than its
- // two sons).
- that.pqdownheap = function (tree, // the tree to restore
- k // node to move down
- ) {
- const heap = that.heap;
- const v = heap[k];
- let j = k << 1; // left son of k
- while (j <= that.heap_len) {
- // Set j to the smallest of the two sons:
- if (j < that.heap_len && smaller(tree, heap[j + 1], heap[j], that.depth)) {
- j++;
- }
- // Exit if v is smaller than both sons
- if (smaller(tree, v, heap[j], that.depth))
- break;
-
- // Exchange v with the smallest son
- heap[k] = heap[j];
- k = j;
- // And continue down the tree, setting j to the left son of k
- j <<= 1;
- }
- heap[k] = v;
- };
-
- // Scan a literal or distance tree to determine the frequencies of the codes
- // in the bit length tree.
- function scan_tree(tree,// the tree to be scanned
- max_code // and its largest code of non zero frequency
- ) {
- let prevlen = -1; // last emitted length
- let curlen; // length of current code
- let nextlen = tree[0 * 2 + 1]; // length of next code
- let count = 0; // repeat count of the current code
- let max_count = 7; // max repeat count
- let min_count = 4; // min repeat count
-
- if (nextlen === 0) {
- max_count = 138;
- min_count = 3;
- }
- tree[(max_code + 1) * 2 + 1] = 0xffff; // guard
-
- for (let n = 0; n <= max_code; n++) {
- curlen = nextlen;
- nextlen = tree[(n + 1) * 2 + 1];
- if (++count < max_count && curlen == nextlen) {
- continue;
- } else if (count < min_count) {
- bl_tree[curlen * 2] += count;
- } else if (curlen !== 0) {
- if (curlen != prevlen)
- bl_tree[curlen * 2]++;
- bl_tree[REP_3_6 * 2]++;
- } else if (count <= 10) {
- bl_tree[REPZ_3_10 * 2]++;
- } else {
- bl_tree[REPZ_11_138 * 2]++;
- }
- count = 0;
- prevlen = curlen;
- if (nextlen === 0) {
- max_count = 138;
- min_count = 3;
- } else if (curlen == nextlen) {
- max_count = 6;
- min_count = 3;
- } else {
- max_count = 7;
- min_count = 4;
- }
- }
- }
-
- // Construct the Huffman tree for the bit lengths and return the index in
- // bl_order of the last bit length code to send.
- function build_bl_tree() {
- let max_blindex; // index of last bit length code of non zero freq
-
- // Determine the bit length frequencies for literal and distance trees
- scan_tree(dyn_ltree, l_desc.max_code);
- scan_tree(dyn_dtree, d_desc.max_code);
-
- // Build the bit length tree:
- bl_desc.build_tree(that);
- // opt_len now includes the length of the tree representations, except
- // the lengths of the bit lengths codes and the 5+5+4 bits for the
- // counts.
-
- // Determine the number of bit length codes to send. The pkzip format
- // requires that at least 4 bit length codes be sent. (appnote.txt says
- // 3 but the actual value used is 4.)
- for (max_blindex = BL_CODES - 1; max_blindex >= 3; max_blindex--) {
- if (bl_tree[Tree.bl_order[max_blindex] * 2 + 1] !== 0)
- break;
- }
- // Update opt_len to include the bit length tree and counts
- that.opt_len += 3 * (max_blindex + 1) + 5 + 5 + 4;
-
- return max_blindex;
- }
-
- // Output a byte on the stream.
- // IN assertion: there is enough room in pending_buf.
- function put_byte(p) {
- that.pending_buf[that.pending++] = p;
- }
-
- function put_short(w) {
- put_byte(w & 0xff);
- put_byte((w >>> 8) & 0xff);
- }
-
- function putShortMSB(b) {
- put_byte((b >> 8) & 0xff);
- put_byte((b & 0xff) & 0xff);
- }
-
- function send_bits(value, length) {
- let val;
- const len = length;
- if (bi_valid > Buf_size - len) {
- val = value;
- // bi_buf |= (val << bi_valid);
- bi_buf |= ((val << bi_valid) & 0xffff);
- put_short(bi_buf);
- bi_buf = val >>> (Buf_size - bi_valid);
- bi_valid += len - Buf_size;
- } else {
- // bi_buf |= (value) << bi_valid;
- bi_buf |= (((value) << bi_valid) & 0xffff);
- bi_valid += len;
- }
- }
-
- function send_code(c, tree) {
- const c2 = c * 2;
- send_bits(tree[c2] & 0xffff, tree[c2 + 1] & 0xffff);
- }
-
- // Send a literal or distance tree in compressed form, using the codes in
- // bl_tree.
- function send_tree(tree,// the tree to be sent
- max_code // and its largest code of non zero frequency
- ) {
- let n; // iterates over all tree elements
- let prevlen = -1; // last emitted length
- let curlen; // length of current code
- let nextlen = tree[0 * 2 + 1]; // length of next code
- let count = 0; // repeat count of the current code
- let max_count = 7; // max repeat count
- let min_count = 4; // min repeat count
-
- if (nextlen === 0) {
- max_count = 138;
- min_count = 3;
- }
-
- for (n = 0; n <= max_code; n++) {
- curlen = nextlen;
- nextlen = tree[(n + 1) * 2 + 1];
- if (++count < max_count && curlen == nextlen) {
- continue;
- } else if (count < min_count) {
- do {
- send_code(curlen, bl_tree);
- } while (--count !== 0);
- } else if (curlen !== 0) {
- if (curlen != prevlen) {
- send_code(curlen, bl_tree);
- count--;
- }
- send_code(REP_3_6, bl_tree);
- send_bits(count - 3, 2);
- } else if (count <= 10) {
- send_code(REPZ_3_10, bl_tree);
- send_bits(count - 3, 3);
- } else {
- send_code(REPZ_11_138, bl_tree);
- send_bits(count - 11, 7);
- }
- count = 0;
- prevlen = curlen;
- if (nextlen === 0) {
- max_count = 138;
- min_count = 3;
- } else if (curlen == nextlen) {
- max_count = 6;
- min_count = 3;
- } else {
- max_count = 7;
- min_count = 4;
- }
- }
- }
-
- // Send the header for a block using dynamic Huffman trees: the counts, the
- // lengths of the bit length codes, the literal tree and the distance tree.
- // IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
- function send_all_trees(lcodes, dcodes, blcodes) {
- let rank; // index in bl_order
-
- send_bits(lcodes - 257, 5); // not +255 as stated in appnote.txt
- send_bits(dcodes - 1, 5);
- send_bits(blcodes - 4, 4); // not -3 as stated in appnote.txt
- for (rank = 0; rank < blcodes; rank++) {
- send_bits(bl_tree[Tree.bl_order[rank] * 2 + 1], 3);
- }
- send_tree(dyn_ltree, lcodes - 1); // literal tree
- send_tree(dyn_dtree, dcodes - 1); // distance tree
- }
-
- // Flush the bit buffer, keeping at most 7 bits in it.
- function bi_flush() {
- if (bi_valid == 16) {
- put_short(bi_buf);
- bi_buf = 0;
- bi_valid = 0;
- } else if (bi_valid >= 8) {
- put_byte(bi_buf & 0xff);
- bi_buf >>>= 8;
- bi_valid -= 8;
- }
- }
-
- // Send one empty static block to give enough lookahead for inflate.
- // This takes 10 bits, of which 7 may remain in the bit buffer.
- // The current inflate code requires 9 bits of lookahead. If the
- // last two codes for the previous block (real code plus EOB) were coded
- // on 5 bits or less, inflate may have only 5+3 bits of lookahead to decode
- // the last real code. In this case we send two empty static blocks instead
- // of one. (There are no problems if the previous block is stored or fixed.)
- // To simplify the code, we assume the worst case of last real code encoded
- // on one bit only.
- function _tr_align() {
- send_bits(STATIC_TREES << 1, 3);
- send_code(END_BLOCK, StaticTree.static_ltree);
-
- bi_flush();
-
- // Of the 10 bits for the empty block, we have already sent
- // (10 - bi_valid) bits. The lookahead for the last real code (before
- // the EOB of the previous block) was thus at least one plus the length
- // of the EOB plus what we have just sent of the empty static block.
- if (1 + last_eob_len + 10 - bi_valid < 9) {
- send_bits(STATIC_TREES << 1, 3);
- send_code(END_BLOCK, StaticTree.static_ltree);
- bi_flush();
- }
- last_eob_len = 7;
- }
-
- // Save the match info and tally the frequency counts. Return true if
- // the current block must be flushed.
- function _tr_tally(dist, // distance of matched string
- lc // match length-MIN_MATCH or unmatched char (if dist==0)
- ) {
- let out_length, in_length, dcode;
- that.dist_buf[last_lit] = dist;
- that.lc_buf[last_lit] = lc & 0xff;
- last_lit++;
-
- if (dist === 0) {
- // lc is the unmatched char
- dyn_ltree[lc * 2]++;
- } else {
- matches++;
- // Here, lc is the match length - MIN_MATCH
- dist--; // dist = match distance - 1
- dyn_ltree[(Tree._length_code[lc] + LITERALS + 1) * 2]++;
- dyn_dtree[Tree.d_code(dist) * 2]++;
- }
-
- if ((last_lit & 0x1fff) === 0 && level > 2) {
- // Compute an upper bound for the compressed length
- out_length = last_lit * 8;
- in_length = strstart - block_start;
- for (dcode = 0; dcode < D_CODES; dcode++) {
- out_length += dyn_dtree[dcode * 2] * (5 + Tree.extra_dbits[dcode]);
- }
- out_length >>>= 3;
- if ((matches < Math.floor(last_lit / 2)) && out_length < Math.floor(in_length / 2))
- return true;
- }
-
- return (last_lit == lit_bufsize - 1);
- // We avoid equality with lit_bufsize because of wraparound at 64K
- // on 16 bit machines and because stored blocks are restricted to
- // 64K-1 bytes.
- }
-
- // Send the block data compressed using the given Huffman trees
- function compress_block(ltree, dtree) {
- let dist; // distance of matched string
- let lc; // match length or unmatched char (if dist === 0)
- let lx = 0; // running index in dist_buf and lc_buf
- let code; // the code to send
- let extra; // number of extra bits to send
-
- if (last_lit !== 0) {
- do {
- dist = that.dist_buf[lx];
- lc = that.lc_buf[lx];
- lx++;
-
- if (dist === 0) {
- send_code(lc, ltree); // send a literal byte
- } else {
- // Here, lc is the match length - MIN_MATCH
- code = Tree._length_code[lc];
-
- send_code(code + LITERALS + 1, ltree); // send the length
- // code
- extra = Tree.extra_lbits[code];
- if (extra !== 0) {
- lc -= Tree.base_length[code];
- send_bits(lc, extra); // send the extra length bits
- }
- dist--; // dist is now the match distance - 1
- code = Tree.d_code(dist);
-
- send_code(code, dtree); // send the distance code
- extra = Tree.extra_dbits[code];
- if (extra !== 0) {
- dist -= Tree.base_dist[code];
- send_bits(dist, extra); // send the extra distance bits
- }
- } // literal or match pair ?
- } while (lx < last_lit);
- }
-
- send_code(END_BLOCK, ltree);
- last_eob_len = ltree[END_BLOCK * 2 + 1];
- }
-
- // Flush the bit buffer and align the output on a byte boundary
- function bi_windup() {
- if (bi_valid > 8) {
- put_short(bi_buf);
- } else if (bi_valid > 0) {
- put_byte(bi_buf & 0xff);
- }
- bi_buf = 0;
- bi_valid = 0;
- }
-
- // Copy a stored block, storing first the length and its
- // one's complement if requested.
- function copy_block(buf, // the input data
- len, // its length
- header // true if block header must be written
- ) {
- bi_windup(); // align on byte boundary
- last_eob_len = 8; // enough lookahead for inflate
-
- if (header) {
- put_short(len);
- put_short(~len);
- }
-
- that.pending_buf.set(win.subarray(buf, buf + len), that.pending);
- that.pending += len;
- }
-
- // Send a stored block
- function _tr_stored_block(buf, // input block
- stored_len, // length of input block
- eof // true if this is the last block for a file
- ) {
- send_bits((STORED_BLOCK << 1) + (eof ? 1 : 0), 3); // send block type
- copy_block(buf, stored_len, true); // with header
- }
-
- // Determine the best encoding for the current block: dynamic trees, static
- // trees or store, and output the encoded block to the zip file.
- function _tr_flush_block(buf, // input block, or NULL if too old
- stored_len, // length of input block
- eof // true if this is the last block for a file
- ) {
- let opt_lenb, static_lenb;// opt_len and static_len in bytes
- let max_blindex = 0; // index of last bit length code of non zero freq
-
- // Build the Huffman trees unless a stored block is forced
- if (level > 0) {
- // Construct the literal and distance trees
- l_desc.build_tree(that);
-
- d_desc.build_tree(that);
-
- // At this point, opt_len and static_len are the total bit lengths
- // of
- // the compressed block data, excluding the tree representations.
-
- // Build the bit length tree for the above two trees, and get the
- // index
- // in bl_order of the last bit length code to send.
- max_blindex = build_bl_tree();
-
- // Determine the best encoding. Compute first the block length in
- // bytes
- opt_lenb = (that.opt_len + 3 + 7) >>> 3;
- static_lenb = (that.static_len + 3 + 7) >>> 3;
-
- if (static_lenb <= opt_lenb)
- opt_lenb = static_lenb;
- } else {
- opt_lenb = static_lenb = stored_len + 5; // force a stored block
- }
-
- if ((stored_len + 4 <= opt_lenb) && buf != -1) {
- // 4: two words for the lengths
- // The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
- // Otherwise we can't have processed more than WSIZE input bytes
- // since
- // the last block flush, because compression would have been
- // successful. If LIT_BUFSIZE <= WSIZE, it is never too late to
- // transform a block into a stored block.
- _tr_stored_block(buf, stored_len, eof);
- } else if (static_lenb == opt_lenb) {
- send_bits((STATIC_TREES << 1) + (eof ? 1 : 0), 3);
- compress_block(StaticTree.static_ltree, StaticTree.static_dtree);
- } else {
- send_bits((DYN_TREES << 1) + (eof ? 1 : 0), 3);
- send_all_trees(l_desc.max_code + 1, d_desc.max_code + 1, max_blindex + 1);
- compress_block(dyn_ltree, dyn_dtree);
- }
-
- // The above check is made mod 2^32, for files larger than 512 MB
- // and uLong implemented on 32 bits.
-
- init_block();
-
- if (eof) {
- bi_windup();
- }
- }
-
- function flush_block_only(eof) {
- _tr_flush_block(block_start >= 0 ? block_start : -1, strstart - block_start, eof);
- block_start = strstart;
- strm.flush_pending();
- }
-
- // Fill the win when the lookahead becomes insufficient.
- // Updates strstart and lookahead.
- //
- // IN assertion: lookahead < MIN_LOOKAHEAD
- // OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
- // At least one byte has been read, or avail_in === 0; reads are
- // performed for at least two bytes (required for the zip translate_eol
- // option -- not supported here).
- function fill_window() {
- let n, m;
- let p;
- let more; // Amount of free space at the end of the win.
-
- do {
- more = (window_size - lookahead - strstart);
-
- // Deal with !@#$% 64K limit:
- if (more === 0 && strstart === 0 && lookahead === 0) {
- more = w_size;
- } else if (more == -1) {
- // Very unlikely, but possible on 16 bit machine if strstart ==
- // 0
- // and lookahead == 1 (input done one byte at time)
- more--;
-
- // If the win is almost full and there is insufficient
- // lookahead,
- // move the upper half to the lower one to make room in the
- // upper half.
- } else if (strstart >= w_size + w_size - MIN_LOOKAHEAD) {
- win.set(win.subarray(w_size, w_size + w_size), 0);
-
- match_start -= w_size;
- strstart -= w_size; // we now have strstart >= MAX_DIST
- block_start -= w_size;
-
- // Slide the hash table (could be avoided with 32 bit values
- // at the expense of memory usage). We slide even when level ==
- // 0
- // to keep the hash table consistent if we switch back to level
- // > 0
- // later. (Using level 0 permanently is not an optimal usage of
- // zlib, so we don't care about this pathological case.)
-
- n = hash_size;
- p = n;
- do {
- m = (head[--p] & 0xffff);
- head[p] = (m >= w_size ? m - w_size : 0);
- } while (--n !== 0);
-
- n = w_size;
- p = n;
- do {
- m = (prev[--p] & 0xffff);
- prev[p] = (m >= w_size ? m - w_size : 0);
- // If n is not on any hash chain, prev[n] is garbage but
- // its value will never be used.
- } while (--n !== 0);
- more += w_size;
- }
-
- if (strm.avail_in === 0)
- return;
-
- // If there was no sliding:
- // strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
- // more == window_size - lookahead - strstart
- // => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
- // => more >= window_size - 2*WSIZE + 2
- // In the BIG_MEM or MMAP case (not yet supported),
- // window_size == input_size + MIN_LOOKAHEAD &&
- // strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
- // Otherwise, window_size == 2*WSIZE so more >= 2.
- // If there was sliding, more >= WSIZE. So in all cases, more >= 2.
-
- n = strm.read_buf(win, strstart + lookahead, more);
- lookahead += n;
-
- // Initialize the hash value now that we have some input:
- if (lookahead >= MIN_MATCH) {
- ins_h = win[strstart] & 0xff;
- ins_h = (((ins_h) << hash_shift) ^ (win[strstart + 1] & 0xff)) & hash_mask;
- }
- // If the whole input has less than MIN_MATCH bytes, ins_h is
- // garbage,
- // but this is not important since only literal bytes will be
- // emitted.
- } while (lookahead < MIN_LOOKAHEAD && strm.avail_in !== 0);
- }
-
- // Copy without compression as much as possible from the input stream,
- // return
- // the current block state.
- // This function does not insert new strings in the dictionary since
- // uncompressible data is probably not useful. This function is used
- // only for the level=0 compression option.
- // NOTE: this function should be optimized to avoid extra copying from
- // win to pending_buf.
- function deflate_stored(flush) {
- // Stored blocks are limited to 0xffff bytes, pending_buf is limited
- // to pending_buf_size, and each stored block has a 5 byte header:
-
- let max_block_size = 0xffff;
- let max_start;
-
- if (max_block_size > pending_buf_size - 5) {
- max_block_size = pending_buf_size - 5;
- }
-
- // Copy as much as possible from input to output:
- // eslint-disable-next-line no-constant-condition
- while (true) {
- // Fill the win as much as possible:
- if (lookahead <= 1) {
- fill_window();
- if (lookahead === 0 && flush == Z_NO_FLUSH$1)
- return NeedMore;
- if (lookahead === 0)
- break; // flush the current block
- }
-
- strstart += lookahead;
- lookahead = 0;
-
- // Emit a stored block if pending_buf will be full:
- max_start = block_start + max_block_size;
- if (strstart === 0 || strstart >= max_start) {
- // strstart === 0 is possible when wraparound on 16-bit machine
- lookahead = (strstart - max_start);
- strstart = max_start;
-
- flush_block_only(false);
- if (strm.avail_out === 0)
- return NeedMore;
-
- }
-
- // Flush if we may have to slide, otherwise block_start may become
- // negative and the data will be gone:
- if (strstart - block_start >= w_size - MIN_LOOKAHEAD) {
- flush_block_only(false);
- if (strm.avail_out === 0)
- return NeedMore;
- }
- }
-
- flush_block_only(flush == Z_FINISH$1);
- if (strm.avail_out === 0)
- return (flush == Z_FINISH$1) ? FinishStarted : NeedMore;
-
- return flush == Z_FINISH$1 ? FinishDone : BlockDone;
- }
-
- function longest_match(cur_match) {
- let chain_length = max_chain_length; // max hash chain length
- let scan = strstart; // current string
- let match; // matched string
- let len; // length of current match
- let best_len = prev_length; // best match length so far
- const limit = strstart > (w_size - MIN_LOOKAHEAD) ? strstart - (w_size - MIN_LOOKAHEAD) : 0;
- let _nice_match = nice_match;
-
- // Stop when cur_match becomes <= limit. To simplify the code,
- // we prevent matches with the string of win index 0.
-
- const wmask = w_mask;
-
- const strend = strstart + MAX_MATCH;
- let scan_end1 = win[scan + best_len - 1];
- let scan_end = win[scan + best_len];
-
- // The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of
- // 16.
- // It is easy to get rid of this optimization if necessary.
-
- // Do not waste too much time if we already have a good match:
- if (prev_length >= good_match) {
- chain_length >>= 2;
- }
-
- // Do not look for matches beyond the end of the input. This is
- // necessary
- // to make deflate deterministic.
- if (_nice_match > lookahead)
- _nice_match = lookahead;
-
- do {
- match = cur_match;
-
- // Skip to next match if the match length cannot increase
- // or if the match length is less than 2:
- if (win[match + best_len] != scan_end || win[match + best_len - 1] != scan_end1 || win[match] != win[scan]
- || win[++match] != win[scan + 1])
- continue;
-
- // The check at best_len-1 can be removed because it will be made
- // again later. (This heuristic is not always a win.)
- // It is not necessary to compare scan[2] and match[2] since they
- // are always equal when the other bytes match, given that
- // the hash keys are equal and that HASH_BITS >= 8.
- scan += 2;
- match++;
-
- // We check for insufficient lookahead only every 8th comparison;
- // the 256th check will be made at strstart+258.
- // eslint-disable-next-line no-empty
- do {
- } while (win[++scan] == win[++match] && win[++scan] == win[++match] && win[++scan] == win[++match]
- && win[++scan] == win[++match] && win[++scan] == win[++match] && win[++scan] == win[++match]
- && win[++scan] == win[++match] && win[++scan] == win[++match] && scan < strend);
-
- len = MAX_MATCH - (strend - scan);
- scan = strend - MAX_MATCH;
-
- if (len > best_len) {
- match_start = cur_match;
- best_len = len;
- if (len >= _nice_match)
- break;
- scan_end1 = win[scan + best_len - 1];
- scan_end = win[scan + best_len];
- }
-
- } while ((cur_match = (prev[cur_match & wmask] & 0xffff)) > limit && --chain_length !== 0);
-
- if (best_len <= lookahead)
- return best_len;
- return lookahead;
- }
-
- // Compress as much as possible from the input stream, return the current
- // block state.
- // This function does not perform lazy evaluation of matches and inserts
- // new strings in the dictionary only for unmatched strings or for short
- // matches. It is used only for the fast compression options.
- function deflate_fast(flush) {
- // short hash_head = 0; // head of the hash chain
- let hash_head = 0; // head of the hash chain
- let bflush; // set if current block must be flushed
-
- // eslint-disable-next-line no-constant-condition
- while (true) {
- // Make sure that we always have enough lookahead, except
- // at the end of the input file. We need MAX_MATCH bytes
- // for the next match, plus MIN_MATCH bytes to insert the
- // string following the next match.
- if (lookahead < MIN_LOOKAHEAD) {
- fill_window();
- if (lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH$1) {
- return NeedMore;
- }
- if (lookahead === 0)
- break; // flush the current block
- }
-
- // Insert the string win[strstart .. strstart+2] in the
- // dictionary, and set hash_head to the head of the hash chain:
- if (lookahead >= MIN_MATCH) {
- ins_h = (((ins_h) << hash_shift) ^ (win[(strstart) + (MIN_MATCH - 1)] & 0xff)) & hash_mask;
-
- // prev[strstart&w_mask]=hash_head=head[ins_h];
- hash_head = (head[ins_h] & 0xffff);
- prev[strstart & w_mask] = head[ins_h];
- head[ins_h] = strstart;
- }
-
- // Find the longest match, discarding those <= prev_length.
- // At this point we have always match_length < MIN_MATCH
-
- if (hash_head !== 0 && ((strstart - hash_head) & 0xffff) <= w_size - MIN_LOOKAHEAD) {
- // To simplify the code, we prevent matches with the string
- // of win index 0 (in particular we have to avoid a match
- // of the string with itself at the start of the input file).
- if (strategy != Z_HUFFMAN_ONLY) {
- match_length = longest_match(hash_head);
- }
- // longest_match() sets match_start
- }
- if (match_length >= MIN_MATCH) {
- // check_match(strstart, match_start, match_length);
-
- bflush = _tr_tally(strstart - match_start, match_length - MIN_MATCH);
-
- lookahead -= match_length;
-
- // Insert new strings in the hash table only if the match length
- // is not too large. This saves time but degrades compression.
- if (match_length <= max_lazy_match && lookahead >= MIN_MATCH) {
- match_length--; // string at strstart already in hash table
- do {
- strstart++;
-
- ins_h = ((ins_h << hash_shift) ^ (win[(strstart) + (MIN_MATCH - 1)] & 0xff)) & hash_mask;
- // prev[strstart&w_mask]=hash_head=head[ins_h];
- hash_head = (head[ins_h] & 0xffff);
- prev[strstart & w_mask] = head[ins_h];
- head[ins_h] = strstart;
-
- // strstart never exceeds WSIZE-MAX_MATCH, so there are
- // always MIN_MATCH bytes ahead.
- } while (--match_length !== 0);
- strstart++;
- } else {
- strstart += match_length;
- match_length = 0;
- ins_h = win[strstart] & 0xff;
-
- ins_h = (((ins_h) << hash_shift) ^ (win[strstart + 1] & 0xff)) & hash_mask;
- // If lookahead < MIN_MATCH, ins_h is garbage, but it does
- // not
- // matter since it will be recomputed at next deflate call.
- }
- } else {
- // No match, output a literal byte
-
- bflush = _tr_tally(0, win[strstart] & 0xff);
- lookahead--;
- strstart++;
- }
- if (bflush) {
-
- flush_block_only(false);
- if (strm.avail_out === 0)
- return NeedMore;
- }
- }
-
- flush_block_only(flush == Z_FINISH$1);
- if (strm.avail_out === 0) {
- if (flush == Z_FINISH$1)
- return FinishStarted;
- else
- return NeedMore;
- }
- return flush == Z_FINISH$1 ? FinishDone : BlockDone;
- }
-
- // Same as above, but achieves better compression. We use a lazy
- // evaluation for matches: a match is finally adopted only if there is
- // no better match at the next win position.
- function deflate_slow(flush) {
- // short hash_head = 0; // head of hash chain
- let hash_head = 0; // head of hash chain
- let bflush; // set if current block must be flushed
- let max_insert;
-
- // Process the input block.
- // eslint-disable-next-line no-constant-condition
- while (true) {
- // Make sure that we always have enough lookahead, except
- // at the end of the input file. We need MAX_MATCH bytes
- // for the next match, plus MIN_MATCH bytes to insert the
- // string following the next match.
-
- if (lookahead < MIN_LOOKAHEAD) {
- fill_window();
- if (lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH$1) {
- return NeedMore;
- }
- if (lookahead === 0)
- break; // flush the current block
- }
-
- // Insert the string win[strstart .. strstart+2] in the
- // dictionary, and set hash_head to the head of the hash chain:
-
- if (lookahead >= MIN_MATCH) {
- ins_h = (((ins_h) << hash_shift) ^ (win[(strstart) + (MIN_MATCH - 1)] & 0xff)) & hash_mask;
- // prev[strstart&w_mask]=hash_head=head[ins_h];
- hash_head = (head[ins_h] & 0xffff);
- prev[strstart & w_mask] = head[ins_h];
- head[ins_h] = strstart;
- }
-
- // Find the longest match, discarding those <= prev_length.
- prev_length = match_length;
- prev_match = match_start;
- match_length = MIN_MATCH - 1;
-
- if (hash_head !== 0 && prev_length < max_lazy_match && ((strstart - hash_head) & 0xffff) <= w_size - MIN_LOOKAHEAD) {
- // To simplify the code, we prevent matches with the string
- // of win index 0 (in particular we have to avoid a match
- // of the string with itself at the start of the input file).
-
- if (strategy != Z_HUFFMAN_ONLY) {
- match_length = longest_match(hash_head);
- }
- // longest_match() sets match_start
-
- if (match_length <= 5 && (strategy == Z_FILTERED || (match_length == MIN_MATCH && strstart - match_start > 4096))) {
-
- // If prev_match is also MIN_MATCH, match_start is garbage
- // but we will ignore the current match anyway.
- match_length = MIN_MATCH - 1;
- }
- }
-
- // If there was a match at the previous step and the current
- // match is not better, output the previous match:
- if (prev_length >= MIN_MATCH && match_length <= prev_length) {
- max_insert = strstart + lookahead - MIN_MATCH;
- // Do not insert strings in hash table beyond this.
-
- // check_match(strstart-1, prev_match, prev_length);
-
- bflush = _tr_tally(strstart - 1 - prev_match, prev_length - MIN_MATCH);
-
- // Insert in hash table all strings up to the end of the match.
- // strstart-1 and strstart are already inserted. If there is not
- // enough lookahead, the last two strings are not inserted in
- // the hash table.
- lookahead -= prev_length - 1;
- prev_length -= 2;
- do {
- if (++strstart <= max_insert) {
- ins_h = (((ins_h) << hash_shift) ^ (win[(strstart) + (MIN_MATCH - 1)] & 0xff)) & hash_mask;
- // prev[strstart&w_mask]=hash_head=head[ins_h];
- hash_head = (head[ins_h] & 0xffff);
- prev[strstart & w_mask] = head[ins_h];
- head[ins_h] = strstart;
- }
- } while (--prev_length !== 0);
- match_available = 0;
- match_length = MIN_MATCH - 1;
- strstart++;
-
- if (bflush) {
- flush_block_only(false);
- if (strm.avail_out === 0)
- return NeedMore;
- }
- } else if (match_available !== 0) {
-
- // If there was no match at the previous position, output a
- // single literal. If there was a match but the current match
- // is longer, truncate the previous match to a single literal.
-
- bflush = _tr_tally(0, win[strstart - 1] & 0xff);
-
- if (bflush) {
- flush_block_only(false);
- }
- strstart++;
- lookahead--;
- if (strm.avail_out === 0)
- return NeedMore;
- } else {
- // There is no previous match to compare with, wait for
- // the next step to decide.
-
- match_available = 1;
- strstart++;
- lookahead--;
- }
- }
-
- if (match_available !== 0) {
- bflush = _tr_tally(0, win[strstart - 1] & 0xff);
- match_available = 0;
- }
- flush_block_only(flush == Z_FINISH$1);
-
- if (strm.avail_out === 0) {
- if (flush == Z_FINISH$1)
- return FinishStarted;
- else
- return NeedMore;
- }
-
- return flush == Z_FINISH$1 ? FinishDone : BlockDone;
- }
-
- function deflateReset(strm) {
- strm.total_in = strm.total_out = 0;
- strm.msg = null; //
-
- that.pending = 0;
- that.pending_out = 0;
-
- status = BUSY_STATE;
-
- last_flush = Z_NO_FLUSH$1;
-
- tr_init();
- lm_init();
- return Z_OK$1;
- }
-
- that.deflateInit = function (strm, _level, bits, _method, memLevel, _strategy) {
- if (!_method)
- _method = Z_DEFLATED$1;
- if (!memLevel)
- memLevel = DEF_MEM_LEVEL;
- if (!_strategy)
- _strategy = Z_DEFAULT_STRATEGY;
-
- // byte[] my_version=ZLIB_VERSION;
-
- //
- // if (!version || version[0] != my_version[0]
- // || stream_size != sizeof(z_stream)) {
- // return Z_VERSION_ERROR;
- // }
-
- strm.msg = null;
-
- if (_level == Z_DEFAULT_COMPRESSION)
- _level = 6;
-
- if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || _method != Z_DEFLATED$1 || bits < 9 || bits > 15 || _level < 0 || _level > 9 || _strategy < 0
- || _strategy > Z_HUFFMAN_ONLY) {
- return Z_STREAM_ERROR$1;
- }
-
- strm.dstate = that;
-
- w_bits = bits;
- w_size = 1 << w_bits;
- w_mask = w_size - 1;
-
- hash_bits = memLevel + 7;
- hash_size = 1 << hash_bits;
- hash_mask = hash_size - 1;
- hash_shift = Math.floor((hash_bits + MIN_MATCH - 1) / MIN_MATCH);
-
- win = new Uint8Array(w_size * 2);
- prev = [];
- head = [];
-
- lit_bufsize = 1 << (memLevel + 6); // 16K elements by default
-
- that.pending_buf = new Uint8Array(lit_bufsize * 4);
- pending_buf_size = lit_bufsize * 4;
-
- that.dist_buf = new Uint16Array(lit_bufsize);
- that.lc_buf = new Uint8Array(lit_bufsize);
-
- level = _level;
-
- strategy = _strategy;
-
- return deflateReset(strm);
- };
-
- that.deflateEnd = function () {
- if (status != INIT_STATE && status != BUSY_STATE && status != FINISH_STATE) {
- return Z_STREAM_ERROR$1;
- }
- // Deallocate in reverse order of allocations:
- that.lc_buf = null;
- that.dist_buf = null;
- that.pending_buf = null;
- head = null;
- prev = null;
- win = null;
- // free
- that.dstate = null;
- return status == BUSY_STATE ? Z_DATA_ERROR$1 : Z_OK$1;
- };
-
- that.deflateParams = function (strm, _level, _strategy) {
- let err = Z_OK$1;
-
- if (_level == Z_DEFAULT_COMPRESSION) {
- _level = 6;
- }
- if (_level < 0 || _level > 9 || _strategy < 0 || _strategy > Z_HUFFMAN_ONLY) {
- return Z_STREAM_ERROR$1;
- }
-
- if (config_table[level].func != config_table[_level].func && strm.total_in !== 0) {
- // Flush the last buffer:
- err = strm.deflate(Z_PARTIAL_FLUSH);
- }
-
- if (level != _level) {
- level = _level;
- max_lazy_match = config_table[level].max_lazy;
- good_match = config_table[level].good_length;
- nice_match = config_table[level].nice_length;
- max_chain_length = config_table[level].max_chain;
- }
- strategy = _strategy;
- return err;
- };
-
- that.deflateSetDictionary = function (strm, dictionary, dictLength) {
- let length = dictLength;
- let n, index = 0;
-
- if (!dictionary || status != INIT_STATE)
- return Z_STREAM_ERROR$1;
-
- if (length < MIN_MATCH)
- return Z_OK$1;
- if (length > w_size - MIN_LOOKAHEAD) {
- length = w_size - MIN_LOOKAHEAD;
- index = dictLength - length; // use the tail of the dictionary
- }
- win.set(dictionary.subarray(index, index + length), 0);
-
- strstart = length;
- block_start = length;
-
- // Insert all strings in the hash table (except for the last two bytes).
- // s->lookahead stays null, so s->ins_h will be recomputed at the next
- // call of fill_window.
-
- ins_h = win[0] & 0xff;
- ins_h = (((ins_h) << hash_shift) ^ (win[1] & 0xff)) & hash_mask;
-
- for (n = 0; n <= length - MIN_MATCH; n++) {
- ins_h = (((ins_h) << hash_shift) ^ (win[(n) + (MIN_MATCH - 1)] & 0xff)) & hash_mask;
- prev[n & w_mask] = head[ins_h];
- head[ins_h] = n;
- }
- return Z_OK$1;
- };
-
- that.deflate = function (_strm, flush) {
- let i, header, level_flags, old_flush, bstate;
-
- if (flush > Z_FINISH$1 || flush < 0) {
- return Z_STREAM_ERROR$1;
- }
-
- if (!_strm.next_out || (!_strm.next_in && _strm.avail_in !== 0) || (status == FINISH_STATE && flush != Z_FINISH$1)) {
- _strm.msg = z_errmsg[Z_NEED_DICT$1 - (Z_STREAM_ERROR$1)];
- return Z_STREAM_ERROR$1;
- }
- if (_strm.avail_out === 0) {
- _strm.msg = z_errmsg[Z_NEED_DICT$1 - (Z_BUF_ERROR$1)];
- return Z_BUF_ERROR$1;
- }
-
- strm = _strm; // just in case
- old_flush = last_flush;
- last_flush = flush;
-
- // Write the zlib header
- if (status == INIT_STATE) {
- header = (Z_DEFLATED$1 + ((w_bits - 8) << 4)) << 8;
- level_flags = ((level - 1) & 0xff) >> 1;
-
- if (level_flags > 3)
- level_flags = 3;
- header |= (level_flags << 6);
- if (strstart !== 0)
- header |= PRESET_DICT$1;
- header += 31 - (header % 31);
-
- status = BUSY_STATE;
- putShortMSB(header);
- }
-
- // Flush as much pending output as possible
- if (that.pending !== 0) {
- strm.flush_pending();
- if (strm.avail_out === 0) {
- // console.log(" avail_out==0");
- // Since avail_out is 0, deflate will be called again with
- // more output space, but possibly with both pending and
- // avail_in equal to zero. There won't be anything to do,
- // but this is not an error situation so make sure we
- // return OK instead of BUF_ERROR at next call of deflate:
- last_flush = -1;
- return Z_OK$1;
- }
-
- // Make sure there is something to do and avoid duplicate
- // consecutive
- // flushes. For repeated and useless calls with Z_FINISH, we keep
- // returning Z_STREAM_END instead of Z_BUFF_ERROR.
- } else if (strm.avail_in === 0 && flush <= old_flush && flush != Z_FINISH$1) {
- strm.msg = z_errmsg[Z_NEED_DICT$1 - (Z_BUF_ERROR$1)];
- return Z_BUF_ERROR$1;
- }
-
- // User must not provide more input after the first FINISH:
- if (status == FINISH_STATE && strm.avail_in !== 0) {
- _strm.msg = z_errmsg[Z_NEED_DICT$1 - (Z_BUF_ERROR$1)];
- return Z_BUF_ERROR$1;
- }
-
- // Start a new block or continue the current one.
- if (strm.avail_in !== 0 || lookahead !== 0 || (flush != Z_NO_FLUSH$1 && status != FINISH_STATE)) {
- bstate = -1;
- switch (config_table[level].func) {
- case STORED$1:
- bstate = deflate_stored(flush);
- break;
- case FAST:
- bstate = deflate_fast(flush);
- break;
- case SLOW:
- bstate = deflate_slow(flush);
- break;
- }
-
- if (bstate == FinishStarted || bstate == FinishDone) {
- status = FINISH_STATE;
- }
- if (bstate == NeedMore || bstate == FinishStarted) {
- if (strm.avail_out === 0) {
- last_flush = -1; // avoid BUF_ERROR next call, see above
- }
- return Z_OK$1;
- // If flush != Z_NO_FLUSH && avail_out === 0, the next call
- // of deflate should use the same flush parameter to make sure
- // that the flush is complete. So we don't have to output an
- // empty block here, this will be done at next call. This also
- // ensures that for a very small output buffer, we emit at most
- // one empty block.
- }
-
- if (bstate == BlockDone) {
- if (flush == Z_PARTIAL_FLUSH) {
- _tr_align();
- } else { // FULL_FLUSH or SYNC_FLUSH
- _tr_stored_block(0, 0, false);
- // For a full flush, this empty block will be recognized
- // as a special marker by inflate_sync().
- if (flush == Z_FULL_FLUSH) {
- // state.head[s.hash_size-1]=0;
- for (i = 0; i < hash_size/*-1*/; i++)
- // forget history
- head[i] = 0;
- }
- }
- strm.flush_pending();
- if (strm.avail_out === 0) {
- last_flush = -1; // avoid BUF_ERROR at next call, see above
- return Z_OK$1;
- }
- }
- }
-
- if (flush != Z_FINISH$1)
- return Z_OK$1;
- return Z_STREAM_END$1;
- };
- }
-
- // ZStream
-
- function ZStream$1() {
- const that = this;
- that.next_in_index = 0;
- that.next_out_index = 0;
- // that.next_in; // next input byte
- that.avail_in = 0; // number of bytes available at next_in
- that.total_in = 0; // total nb of input bytes read so far
- // that.next_out; // next output byte should be put there
- that.avail_out = 0; // remaining free space at next_out
- that.total_out = 0; // total nb of bytes output so far
- // that.msg;
- // that.dstate;
- }
-
- ZStream$1.prototype = {
- deflateInit: function (level, bits) {
- const that = this;
- that.dstate = new Deflate$1();
- if (!bits)
- bits = MAX_BITS$1;
- return that.dstate.deflateInit(that, level, bits);
- },
-
- deflate: function (flush) {
- const that = this;
- if (!that.dstate) {
- return Z_STREAM_ERROR$1;
- }
- return that.dstate.deflate(that, flush);
- },
-
- deflateEnd: function () {
- const that = this;
- if (!that.dstate)
- return Z_STREAM_ERROR$1;
- const ret = that.dstate.deflateEnd();
- that.dstate = null;
- return ret;
- },
-
- deflateParams: function (level, strategy) {
- const that = this;
- if (!that.dstate)
- return Z_STREAM_ERROR$1;
- return that.dstate.deflateParams(that, level, strategy);
- },
-
- deflateSetDictionary: function (dictionary, dictLength) {
- const that = this;
- if (!that.dstate)
- return Z_STREAM_ERROR$1;
- return that.dstate.deflateSetDictionary(that, dictionary, dictLength);
- },
-
- // Read a new buffer from the current input stream, update the
- // total number of bytes read. All deflate() input goes through
- // this function so some applications may wish to modify it to avoid
- // allocating a large strm->next_in buffer and copying from it.
- // (See also flush_pending()).
- read_buf: function (buf, start, size) {
- const that = this;
- let len = that.avail_in;
- if (len > size)
- len = size;
- if (len === 0)
- return 0;
- that.avail_in -= len;
- buf.set(that.next_in.subarray(that.next_in_index, that.next_in_index + len), start);
- that.next_in_index += len;
- that.total_in += len;
- return len;
- },
-
- // Flush as much pending output as possible. All deflate() output goes
- // through this function so some applications may wish to modify it
- // to avoid allocating a large strm->next_out buffer and copying into it.
- // (See also read_buf()).
- flush_pending: function () {
- const that = this;
- let len = that.dstate.pending;
-
- if (len > that.avail_out)
- len = that.avail_out;
- if (len === 0)
- return;
-
- // if (that.dstate.pending_buf.length <= that.dstate.pending_out || that.next_out.length <= that.next_out_index
- // || that.dstate.pending_buf.length < (that.dstate.pending_out + len) || that.next_out.length < (that.next_out_index +
- // len)) {
- // console.log(that.dstate.pending_buf.length + ", " + that.dstate.pending_out + ", " + that.next_out.length + ", " +
- // that.next_out_index + ", " + len);
- // console.log("avail_out=" + that.avail_out);
- // }
-
- that.next_out.set(that.dstate.pending_buf.subarray(that.dstate.pending_out, that.dstate.pending_out + len), that.next_out_index);
-
- that.next_out_index += len;
- that.dstate.pending_out += len;
- that.total_out += len;
- that.avail_out -= len;
- that.dstate.pending -= len;
- if (that.dstate.pending === 0) {
- that.dstate.pending_out = 0;
- }
- }
- };
-
- // Deflate
-
- function ZipDeflate(options) {
- const that = this;
- const z = new ZStream$1();
- const bufsize = getMaximumCompressedSize$1(options && options.chunkSize ? options.chunkSize : 64 * 1024);
- const flush = Z_NO_FLUSH$1;
- const buf = new Uint8Array(bufsize);
- let level = options ? options.level : Z_DEFAULT_COMPRESSION;
- if (typeof level == "undefined")
- level = Z_DEFAULT_COMPRESSION;
- z.deflateInit(level);
- z.next_out = buf;
-
- that.append = function (data, onprogress) {
- let err, array, lastIndex = 0, bufferIndex = 0, bufferSize = 0;
- const buffers = [];
- if (!data.length)
- 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;
- err = z.deflate(flush);
- if (err != Z_OK$1)
- throw new Error("deflating: " + z.msg);
- if (z.next_out_index)
- if (z.next_out_index == bufsize)
- buffers.push(new Uint8Array(buf));
- else
- buffers.push(buf.slice(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);
- if (buffers.length > 1) {
- array = new Uint8Array(bufferSize);
- buffers.forEach(function (chunk) {
- array.set(chunk, bufferIndex);
- bufferIndex += chunk.length;
- });
- } else {
- array = buffers[0] || new Uint8Array(0);
- }
- return array;
- };
- that.flush = function () {
- let err, array, bufferIndex = 0, bufferSize = 0;
- const buffers = [];
- do {
- z.next_out_index = 0;
- z.avail_out = bufsize;
- err = z.deflate(Z_FINISH$1);
- if (err != Z_STREAM_END$1 && err != Z_OK$1)
- throw new Error("deflating: " + z.msg);
- if (bufsize - z.avail_out > 0)
- buffers.push(buf.slice(0, z.next_out_index));
- bufferSize += z.next_out_index;
- } while (z.avail_in > 0 || z.avail_out === 0);
- z.deflateEnd();
- array = new Uint8Array(bufferSize);
- buffers.forEach(function (chunk) {
- array.set(chunk, bufferIndex);
- bufferIndex += chunk.length;
- });
- return array;
- };
- }
-
- function getMaximumCompressedSize$1(uncompressedSize) {
- return uncompressedSize + (5 * (Math.floor(uncompressedSize / 16383) + 1));
- }
-
- /*
- Copyright (c) 2022 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.
- */
-
- // Global
- const MAX_BITS = 15;
-
- const Z_OK = 0;
- const Z_STREAM_END = 1;
- const Z_NEED_DICT = 2;
- const Z_STREAM_ERROR = -2;
- const Z_DATA_ERROR = -3;
- const Z_MEM_ERROR = -4;
- const Z_BUF_ERROR = -5;
-
- const inflate_mask = [0x00000000, 0x00000001, 0x00000003, 0x00000007, 0x0000000f, 0x0000001f, 0x0000003f, 0x0000007f, 0x000000ff, 0x000001ff, 0x000003ff,
- 0x000007ff, 0x00000fff, 0x00001fff, 0x00003fff, 0x00007fff, 0x0000ffff];
-
- const MANY = 1440;
-
- // JZlib version : "1.0.2"
- const Z_NO_FLUSH = 0;
- const Z_FINISH = 4;
-
- // InfTree
- const fixed_bl = 9;
- const fixed_bd = 5;
-
- const 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];
- const 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.
- const 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
- const 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
- ];
-
- const 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];
-
- const 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.
- const BMAX = 15; // maximum bit length of any code
-
- function InfTree() {
- const that = this;
-
- let hn; // hufts used in space
- let v; // work area for huft_build
- let c; // bit length count table
- let r; // table entry for structure assignment
- let u; // table stack
- let 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.
-
- let a; // counter for codes of length k
- let f; // i repeats in table every f entries
- let g; // maximum code length
- let h; // table level
- let i; // counter, current code
- let j; // counter
- let k; // number of bits in current code
- let l; // bits per table (returned in m)
- let mask; // (1 << w) - 1, to avoid cc -O bug on HP
- let p; // pointer into c[], b[], or v[]
- let q; // points to current table
- let w; // bits before this table == (l * h)
- let xp; // pointer into x
- let y; // number of dummy codes added
- let 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) {
- let 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
- ) {
- let 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
- ) {
- let 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
- const START = 0; // x: set up for LEN
- const LEN = 1; // i: get length/literal/eob next
- const LENEXT = 2; // i: getting length extra (have base)
- const DIST = 3; // i: get distance next
- const DISTEXT = 4;// i: getting distance extra
- const COPY = 5; // o: copying bytes in win, waiting
- // for space
- const LIT = 6; // o: got literal, waiting for output
- // space
- const WASH = 7; // o: got eob, possibly still output
- // waiting
- const END = 8; // x: got eob and all data flushed
- const BADCODE = 9;// x: got error
-
- function InfCodes() {
- const that = this;
-
- let mode; // current inflate_codes mode
-
- // mode dependent information
- let len = 0;
-
- let tree; // pointer into tree
- let tree_index = 0;
- let need = 0; // bits needed
-
- let lit = 0;
-
- // if EXT or COPY, where and how much
- let get = 0; // bits to get for extra
- let dist = 0; // distance back to copy from
-
- let lbits = 0; // ltree bits decoded per branch
- let dbits = 0; // dtree bits decoder per branch
- let ltree; // literal/length/eob tree
- let ltree_index = 0; // literal/length/eob tree
- let dtree; // distance tree
- let dtree_index = 0; // distance tree
-
- // Called with number of bytes left to write in win 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) {
- let t; // temporary pointer
- let tp; // temporary pointer
- let tp_index; // temporary pointer
- let e; // extra bits or operation
- let b; // bit buffer
- let k; // bits in bit buffer
- let p; // input data pointer
- let n; // bytes available there
- let q; // output win write pointer
- let m; // bytes to end of win or read pointer
- let ml; // mask for literal/length tree
- let md; // mask for distance tree
- let c; // bytes to copy
- let d; // distance back to copy from
- let r; // copy source pointer
-
- let 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.win[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.win[q++] = s.win[r++]; // minimum
- // count is
- // three,
- s.win[q++] = s.win[r++]; // so unroll
- // loop a
- // little
- c -= 2;
- } else {
- s.win.set(s.win.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 win
- } 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.win[q++] = s.win[r++];
- } while (--e !== 0);
- } else {
- s.win.set(s.win.subarray(r, r + e), q);
- q += e;
- r += e;
- e = 0;
- }
- r = 0; // copy rest from start of win
- }
-
- }
-
- // copy all or what's left
- if (q - r > 0 && c > (q - r)) {
- do {
- s.win[q++] = s.win[r++];
- } while (--c !== 0);
- } else {
- s.win.set(s.win.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;
- }
- // eslint-disable-next-line no-constant-condition
- } 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.win[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;
- }
- // eslint-disable-next-line no-constant-condition
- } 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) {
- let j; // temporary storage
- let tindex; // temporary pointer
- let e; // extra bits or operation
- let b = 0; // bit buffer
- let k = 0; // bits in bit buffer
- let p = 0; // input data pointer
- let n; // bytes available there
- let q; // output win write pointer
- let m; // bytes to end of win or read pointer
- let 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
- // eslint-disable-next-line no-constant-condition
- 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;
- /* falls through */
- 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;
- /* falls through */
- 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;
- /* falls through */
- case COPY: // o: copying bytes in win, waiting for space
- f = q - dist;
- while (f < 0) { // modulo win 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.win[q++] = s.win[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.win[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;
- /* falls through */
- 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.
- const 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];
-
- const TYPE = 0; // get type bits (3, including end bit)
- const LENS = 1; // get lengths for stored
- const STORED = 2;// processing stored block
- const TABLE = 3; // get table lengths
- const BTREE = 4; // get bit lengths tree for a dynamic
- // block
- const DTREE = 5; // get length, distance trees for a
- // dynamic block
- const CODES = 6; // processing fixed or dynamic block
- const DRY = 7; // output remaining win bytes
- const DONELOCKS = 8; // finished last block, done
- const BADBLOCKS = 9; // ot a data error--stuck here
-
- function InfBlocks(z, w) {
- const that = this;
-
- let mode = TYPE; // current inflate_block mode
-
- let left = 0; // if STORED, bytes left to copy
-
- let table = 0; // table lengths (14 bits)
- let index = 0; // index into blens (or border)
- let blens; // bit lengths of codes
- const bb = [0]; // bit length tree depth
- const tb = [0]; // bit length decoding tree
-
- const codes = new InfCodes(); // if CODES, current state
-
- let last = 0; // true if this block is the last block
-
- let hufts = new Int32Array(MANY * 3); // single malloc for tree space
- const check = 0; // check on output
- const inftree = new InfTree();
-
- that.bitk = 0; // bits in bit buffer
- that.bitb = 0; // bit buffer
- that.win = new Uint8Array(w); // sliding win
- that.end = w; // one byte after sliding win
- that.read = 0; // win read pointer
- that.write = 0; // win 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 win to the output area
- that.inflate_flush = function (z, r) {
- let n;
- let p;
- let 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 win
- 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 win
- z.next_out.set(that.win.subarray(q, q + n), p);
- p += n;
- q += n;
-
- // see if more to copy at beginning of win
- 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.win.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) {
- let t; // temporary storage
- let b; // bit buffer
- let k; // bits in bit buffer
- let p; // input data pointer
- let n; // bytes available there
- let q; // output win write pointer
- let m; // bytes to end of win or read pointer
-
- let 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
- // eslint-disable-next-line no-constant-condition
- while (true) {
- let bl, bd, tl, td, bl_, bd_, tl_, td_;
- 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
- // {
- bl = []; // new Array(1);
- bd = []; // new Array(1);
- tl = [[]]; // new Array(1);
- 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.win.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;
- /* falls through */
- 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;
- /* falls through */
- case DTREE:
- // eslint-disable-next-line no-constant-condition
- while (true) {
- t = table;
- if (index >= 258 + (t & 0x1f) + ((t >> 5) & 0x1f)) {
- break;
- }
-
- let 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;
- // {
- bl_ = []; // new Array(1);
- bd_ = []; // new Array(1);
- tl_ = []; // new Array(1);
- 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;
- /* falls through */
- 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;
- /* falls through */
- 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;
- /* falls through */
- 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.win = null;
- hufts = null;
- // ZFREE(z, s);
- };
-
- that.set_dictionary = function (d, start, n) {
- that.win.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
- const PRESET_DICT = 0x20;
-
- const Z_DEFLATED = 8;
-
- const METHOD = 0; // waiting for method byte
- const FLAG = 1; // waiting for flag byte
- const DICT4 = 2; // four dictionary check bytes to go
- const DICT3 = 3; // three dictionary check bytes to go
- const DICT2 = 4; // two dictionary check bytes to go
- const DICT1 = 5; // one dictionary check byte to go
- const DICT0 = 6; // waiting for inflateSetDictionary
- const BLOCKS = 7; // decompressing blocks
- const DONE = 12; // finished check, done
- const BAD = 13; // got an error--stay here
-
- const mark = [0, 0, 0xff, 0xff];
-
- function Inflate$1() {
- const 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(win 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 win 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) {
- let r;
- let b;
-
- if (!z || !z.istate || !z.next_in)
- return Z_STREAM_ERROR;
- const istate = z.istate;
- f = f == Z_FINISH ? Z_BUF_ERROR : Z_OK;
- r = Z_BUF_ERROR;
- // eslint-disable-next-line no-constant-condition
- while (true) {
- switch (istate.mode) {
- case METHOD:
-
- if (z.avail_in === 0)
- return r;
- r = f;
-
- z.avail_in--;
- z.total_in++;
- if (((istate.method = z.read_byte(z.next_in_index++)) & 0xf) != Z_DEFLATED) {
- istate.mode = BAD;
- z.msg = "unknown compression method";
- istate.marker = 5; // can't try inflateSync
- break;
- }
- if ((istate.method >> 4) + 8 > istate.wbits) {
- istate.mode = BAD;
- z.msg = "invalid win size";
- istate.marker = 5; // can't try inflateSync
- break;
- }
- istate.mode = FLAG;
- /* falls through */
- 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 ((((istate.method << 8) + b) % 31) !== 0) {
- istate.mode = BAD;
- z.msg = "incorrect header check";
- istate.marker = 5; // can't try inflateSync
- break;
- }
-
- if ((b & PRESET_DICT) === 0) {
- istate.mode = BLOCKS;
- break;
- }
- istate.mode = DICT4;
- /* falls through */
- case DICT4:
-
- if (z.avail_in === 0)
- return r;
- r = f;
-
- z.avail_in--;
- z.total_in++;
- istate.need = ((z.read_byte(z.next_in_index++) & 0xff) << 24) & 0xff000000;
- istate.mode = DICT3;
- /* falls through */
- case DICT3:
-
- if (z.avail_in === 0)
- return r;
- r = f;
-
- z.avail_in--;
- z.total_in++;
- istate.need += ((z.read_byte(z.next_in_index++) & 0xff) << 16) & 0xff0000;
- istate.mode = DICT2;
- /* falls through */
- case DICT2:
-
- if (z.avail_in === 0)
- return r;
- r = f;
-
- z.avail_in--;
- z.total_in++;
- istate.need += ((z.read_byte(z.next_in_index++) & 0xff) << 8) & 0xff00;
- istate.mode = DICT1;
- /* falls through */
- case DICT1:
-
- if (z.avail_in === 0)
- return r;
- r = f;
-
- z.avail_in--;
- z.total_in++;
- istate.need += (z.read_byte(z.next_in_index++) & 0xff);
- istate.mode = DICT0;
- return Z_NEED_DICT;
- case DICT0:
- istate.mode = BAD;
- z.msg = "need dictionary";
- istate.marker = 0; // can try inflateSync
- return Z_STREAM_ERROR;
- case BLOCKS:
-
- r = istate.blocks.proc(z, r);
- if (r == Z_DATA_ERROR) {
- istate.mode = BAD;
- istate.marker = 0; // can try inflateSync
- break;
- }
- if (r == Z_OK) {
- r = f;
- }
- if (r != Z_STREAM_END) {
- return r;
- }
- r = f;
- istate.blocks.reset(z, istate.was);
- istate.mode = DONE;
- /* falls through */
- case DONE:
- z.avail_in = 0;
- return Z_STREAM_END;
- case BAD:
- return Z_DATA_ERROR;
- default:
- return Z_STREAM_ERROR;
- }
- }
- };
-
- that.inflateSetDictionary = function (z, dictionary, dictLength) {
- let index = 0, length = dictLength;
- if (!z || !z.istate || z.istate.mode != DICT0)
- return Z_STREAM_ERROR;
- const istate = z.istate;
- if (length >= (1 << istate.wbits)) {
- length = (1 << istate.wbits) - 1;
- index = dictLength - length;
- }
- istate.blocks.set_dictionary(dictionary, index, length);
- istate.mode = BLOCKS;
- return Z_OK;
- };
-
- that.inflateSync = function (z) {
- let n; // number of bytes to look at
- let p; // pointer to bytes
- let m; // number of marker bytes found in a row
- let r, w; // temporaries to save total_in and total_out
-
- // set up
- if (!z || !z.istate)
- return Z_STREAM_ERROR;
- const istate = z.istate;
- if (istate.mode != BAD) {
- istate.mode = BAD;
- istate.marker = 0;
- }
- if ((n = z.avail_in) === 0)
- return Z_BUF_ERROR;
- p = z.next_in_index;
- m = 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;
- 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;
- 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) {
- const that = this;
- that.istate = new Inflate$1();
- if (!bits)
- bits = MAX_BITS;
- return that.istate.inflateInit(that, bits);
- },
-
- inflate: function (f) {
- const that = this;
- if (!that.istate)
- return Z_STREAM_ERROR;
- return that.istate.inflate(that, f);
- },
-
- inflateEnd: function () {
- const that = this;
- if (!that.istate)
- return Z_STREAM_ERROR;
- const ret = that.istate.inflateEnd(that);
- that.istate = null;
- return ret;
- },
-
- inflateSync: function () {
- const that = this;
- if (!that.istate)
- return Z_STREAM_ERROR;
- return that.istate.inflateSync(that);
- },
- inflateSetDictionary: function (dictionary, dictLength) {
- const that = this;
- if (!that.istate)
- return Z_STREAM_ERROR;
- return that.istate.inflateSetDictionary(that, dictionary, dictLength);
- },
- read_byte: function (start) {
- const that = this;
- return that.next_in[start];
- },
- read_buf: function (start, size) {
- const that = this;
- return that.next_in.subarray(start, start + size);
- }
- };
-
- // Inflater
-
- function ZipInflate(options) {
- const that = this;
- const z = new ZStream();
- const bufsize = options && options.chunkSize ? Math.floor(options.chunkSize * 2) : 128 * 1024;
- const flush = Z_NO_FLUSH;
- const buf = new Uint8Array(bufsize);
- let nomoreinput = false;
-
- z.inflateInit();
- z.next_out = buf;
-
- that.append = function (data, onprogress) {
- const buffers = [];
- let err, array, lastIndex = 0, bufferIndex = 0, bufferSize = 0;
- 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)) {
- if (z.avail_in !== 0)
- throw new Error("inflating: bad input");
- } else if (err !== Z_OK && err !== Z_STREAM_END)
- throw new Error("inflating: " + z.msg);
- if ((nomoreinput || err === Z_STREAM_END) && (z.avail_in === data.length))
- throw new Error("inflating: bad input");
- if (z.next_out_index)
- if (z.next_out_index === bufsize)
- buffers.push(new Uint8Array(buf));
- else
- buffers.push(buf.slice(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);
- if (buffers.length > 1) {
- array = new Uint8Array(bufferSize);
- buffers.forEach(function (chunk) {
- array.set(chunk, bufferIndex);
- bufferIndex += chunk.length;
- });
- } else {
- array = buffers[0] || new Uint8Array(0);
- }
- return array;
- };
- that.flush = function () {
- z.inflateEnd();
- };
- }
-
- /*
- Copyright (c) 2022 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.
- */
-
- /* global navigator */
-
- const DEFAULT_CONFIGURATION = {
- chunkSize: 512 * 1024,
- maxWorkers: (typeof navigator != "undefined" && navigator.hardwareConcurrency) || 2,
- terminateWorkerTimeout: 5000,
- useWebWorkers: true,
- workerScripts: undefined
- };
-
- const config = Object.assign({}, DEFAULT_CONFIGURATION);
-
- function getConfiguration() {
- return config;
- }
-
- function configure(configuration) {
- if (configuration.baseURL !== undefined) {
- config.baseURL = configuration.baseURL;
- }
- if (configuration.chunkSize !== undefined) {
- config.chunkSize = configuration.chunkSize;
- }
- if (configuration.maxWorkers !== undefined) {
- config.maxWorkers = configuration.maxWorkers;
- }
- if (configuration.terminateWorkerTimeout !== undefined) {
- config.terminateWorkerTimeout = configuration.terminateWorkerTimeout;
- }
- if (configuration.useWebWorkers !== undefined) {
- config.useWebWorkers = configuration.useWebWorkers;
- }
- if (configuration.Deflate !== undefined) {
- config.Deflate = configuration.Deflate;
- }
- if (configuration.Inflate !== undefined) {
- config.Inflate = configuration.Inflate;
- }
- if (configuration.workerScripts !== undefined) {
- if (configuration.workerScripts.deflate) {
- if (!Array.isArray(configuration.workerScripts.deflate)) {
- throw new Error("workerScripts.deflate must be an array");
- }
- if (!config.workerScripts) {
- config.workerScripts = {};
- }
- config.workerScripts.deflate = configuration.workerScripts.deflate;
- }
- if (configuration.workerScripts.inflate) {
- if (!Array.isArray(configuration.workerScripts.inflate)) {
- throw new Error("workerScripts.inflate must be an array");
- }
- if (!config.workerScripts) {
- config.workerScripts = {};
- }
- config.workerScripts.inflate = configuration.workerScripts.inflate;
- }
- }
- }
-
- var t=t=>{if("function"==typeof URL.createObjectURL){const e=()=>URL.createObjectURL(new Blob(['const{Array:t,Object:e,Math:n,Error:r,Uint8Array:i,Uint16Array:s,Uint32Array:o,Int32Array:f,DataView:c,TextEncoder:l,crypto:u,postMessage:a}=globalThis,w=[];for(let t=0;256>t;t++){let e=t;for(let t=0;8>t;t++)1&e?e=e>>>1^3988292384:e>>>=1;w[t]=e}class h{constructor(t){this.t=t||-1}append(t){let e=0|this.t;for(let n=0,r=0|t.length;r>n;n++)e=e>>>8^w[255&(e^t[n])];this.t=e}get(){return~this.t}}const d={concat(t,e){if(0===t.length||0===e.length)return t.concat(e);const n=t[t.length-1],r=d.i(n);return 32===r?t.concat(e):d.o(e,r,0|n,t.slice(0,t.length-1))},l(t){const e=t.length;if(0===e)return 0;const n=t[e-1];return 32*(e-1)+d.i(n)},u(t,e){if(32*t.length<e)return t;const r=(t=t.slice(0,n.ceil(e/32))).length;return e&=31,r>0&&e&&(t[r-1]=d.h(e,t[r-1]&2147483648>>e-1,1)),t},h:(t,e,n)=>32===t?e:(n?0|e:e<<32-t)+1099511627776*t,i:t=>n.round(t/1099511627776)||32,o(t,e,n,r){for(void 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n.splice(0,16*c),e},V:function(){const t=this;let e=t.S;const r=t.m;e=d.concat(e,[d.h(1,1)]);for(let t=e.length+2;15&t;t++)e.push(0);for(e.push(n.floor(t._/4294967296)),e.push(0|t._);e.length;)t.A(e.splice(0,16));return t.reset(),r},I:[1732584193,4023233417,2562383102,271733878,3285377520],B:[1518500249,1859775393,2400959708,3395469782],D:(t,e,n,r)=>t>19?t>39?t>59?t>79?void 0:e^n^r:e&n|e&r|n&r:e^n^r:e&n|~e&r,U:(t,e)=>e<<t|e>>>32-t,A:function(e){const r=this,i=r.m,s=t(80);for(let t=0;16>t;t++)s[t]=e[t];let o=i[0],f=i[1],c=i[2],l=i[3],u=i[4];for(let t=0;79>=t;t++){16>t||(s[t]=r.U(1,s[t-3]^s[t-8]^s[t-14]^s[t-16]));const e=r.U(5,o)+r.D(t,f,c,l)+u+s[t]+r.B[n.floor(t/20)]|0;u=l,l=c,c=r.U(30,f),f=o,o=e}i[0]=i[0]+o|0,i[1]=i[1]+f|0,i[2]=i[2]+c|0,i[3]=i[3]+l|0,i[4]=i[4]+u|0}};const y={name:"PBKDF2"},k=e.assign({hash:{name:"HMAC"}},y),g=e.assign({iterations:1e3,hash:{name:"SHA-1"}},y),v=["deriveBits"],m=[8,12,16],z=[16,24,32],S=[0,0,0,0],_=p.p,I=class{constructor(t){const e=this;e.M=[[[],[],[],[],[]],[[],[],[],[],[]]],e.M[0][0][0]||e.P();const n=e.M[0][4],i=e.M[1],s=t.length;let o,f,c,l=1;if(4!==s&&6!==s&&8!==s)throw new r("invalid aes key size");for(e.B=[f=t.slice(0),c=[]],o=s;4*s+28>o;o++){let t=f[o-1];(o%s==0||8===s&&o%s==4)&&(t=n[t>>>24]<<24^n[t>>16&255]<<16^n[t>>8&255]<<8^n[255&t],o%s==0&&(t=t<<8^t>>>24^l<<24,l=l<<1^283*(l>>7))),f[o]=f[o-s]^t}for(let t=0;o;t++,o--){const e=f[3&t?o:o-4];c[t]=4>=o||4>t?e:i[0][n[e>>>24]]^i[1][n[e>>16&255]]^i[2][n[e>>8&255]]^i[3][n[255&e]]}}encrypt(t){return this.H(t,0)}decrypt(t){return this.H(t,1)}P(){const t=this.M[0],e=this.M[1],n=t[4],r=e[4],i=[],s=[];let o,f,c,l;for(let t=0;256>t;t++)s[(i[t]=t<<1^283*(t>>7))^t]=t;for(let u=o=0;!n[u];u^=f||1,o=s[o]||1){let s=o^o<<1^o<<2^o<<3^o<<4;s=s>>8^255&s^99,n[u]=s,r[s]=u,l=i[c=i[f=i[u]]];let a=16843009*l^65537*c^257*f^16843008*u,w=257*i[s]^16843008*s;for(let n=0;4>n;n++)t[n][u]=w=w<<24^w>>>8,e[n][s]=a=a<<24^a>>>8}for(let 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dt(){let t,e,n,r,i,s;function o(t,e,o,f,c,l,u,a,w,h,d){let p,b,y,k,g,v,m,z,S,_,I,C,A,V,E;_=0,g=o;do{n[t[e+_]]++,_++,g--}while(0!==g);if(n[0]==o)return u[0]=-1,a[0]=0,0;for(z=a[0],v=1;15>=v&&0===n[v];v++);for(m=v,v>z&&(z=v),g=15;0!==g&&0===n[g];g--);for(y=g,z>g&&(z=g),a[0]=z,V=1<<v;g>v;v++,V<<=1)if(0>(V-=n[v]))return-3;if(0>(V-=n[g]))return-3;for(n[g]+=V,s[1]=v=0,_=1,A=2;0!=--g;)s[A]=v+=n[_],A++,_++;g=0,_=0;do{0!==(v=t[e+_])&&(d[s[v]++]=g),_++}while(++g<o);for(o=s[y],s[0]=g=0,_=0,k=-1,C=-z,i[0]=0,I=0,E=0;y>=m;m++)for(p=n[m];0!=p--;){for(;m>C+z;){if(k++,C+=z,E=y-C,E=E>z?z:E,(b=1<<(v=m-C))>p+1&&(b-=p+1,A=m,E>v))for(;++v<E&&(b<<=1)>n[++A];)b-=n[A];if(E=1<<v,h[0]+E>1440)return-3;i[k]=I=h[0],h[0]+=E,0!==k?(s[k]=g,r[0]=v,r[1]=z,v=g>>>C-z,r[2]=I-i[k-1]-v,w.set(r,3*(i[k-1]+v))):u[0]=I}for(r[1]=m-C,o>_?d[_]<f?(r[0]=256>d[_]?0:96,r[2]=d[_++]):(r[0]=l[d[_]-f]+16+64,r[2]=c[d[_++]-f]):r[0]=192,b=1<<m-C,v=g>>>C;E>v;v+=b)w.set(r,3*(I+v));for(v=1<<m-1;0!=(g&v);v>>>=1)g^=v;for(g^=v,S=(1<<C)-1;(g&S)!=s[k];)k--,C-=z,S=(1<<C)-1}return 0!==V&&1!=y?-5:0}function c(o){let c;for(t||(t=[],e=[],n=new f(16),r=[],i=new f(15),s=new f(16)),e.length<o&&(e=[]),c=0;o>c;c++)e[c]=0;for(c=0;16>c;c++)n[c]=0;for(c=0;3>c;c++)r[c]=0;i.set(n.subarray(0,15),0),s.set(n.subarray(0,16),0)}this.ce=(n,r,i,s,f)=>{let l;return c(19),t[0]=0,l=o(n,0,19,19,null,null,i,r,s,t,e),-3==l?f.Qt="oversubscribed dynamic bit lengths tree":-5!=l&&0!==r[0]||(f.Qt="incomplete dynamic bit lengths tree",l=-3),l},this.le=(n,r,i,s,f,l,u,a,w)=>{let h;return c(288),t[0]=0,h=o(i,0,n,257,ut,at,l,s,a,t,e),0!=h||0===s[0]?(-3==h?w.Qt="oversubscribed literal/length tree":-4!=h&&(w.Qt="incomplete literal/length tree",h=-3),h):(c(288),h=o(i,n,r,0,wt,ht,u,f,a,t,e),0!=h||0===f[0]&&n>257?(-3==h?w.Qt="oversubscribed distance tree":-5==h?(w.Qt="incomplete distance tree",h=-3):-4!=h&&(w.Qt="empty distance tree with lengths",h=-3),h):0)}}function pt(){const t=this;let e,n,r,i,s=0,o=0,f=0,c=0,l=0,u=0,a=0,w=0,h=0,d=0;function p(t,e,n,r,i,s,o,f){let c,l,u,a,w,h,d,p,b,y,k,g,v,m,z,S;d=f.oe,p=f.Gt,w=o.ue,h=o.ae,b=o.write,y=b<o.read?o.read-b-1:o.end-b,k=ft[t],g=ft[e];do{for(;20>h;)p--,w|=(255&f.we(d++))<<h,h+=8;if(c=w&k,l=n,u=r,S=3*(u+c),0!==(a=l[S]))for(;;){if(w>>=l[S+1],h-=l[S+1],0!=(16&a)){for(a&=15,v=l[S+2]+(w&ft[a]),w>>=a,h-=a;15>h;)p--,w|=(255&f.we(d++))<<h,h+=8;for(c=w&g,l=i,u=s,S=3*(u+c),a=l[S];;){if(w>>=l[S+1],h-=l[S+1],0!=(16&a)){for(a&=15;a>h;)p--,w|=(255&f.we(d++))<<h,h+=8;if(m=l[S+2]+(w&ft[a]),w>>=a,h-=a,y-=v,m>b){z=b-m;do{z+=o.end}while(0>z);if(a=o.end-z,v>a){if(v-=a,b-z>0&&a>b-z)do{o.he[b++]=o.he[z++]}while(0!=--a);else o.he.set(o.he.subarray(z,z+a),b),b+=a,z+=a,a=0;z=0}}else z=b-m,b-z>0&&2>b-z?(o.he[b++]=o.he[z++],o.he[b++]=o.he[z++],v-=2):(o.he.set(o.he.subarray(z,z+2),b),b+=2,z+=2,v-=2);if(b-z>0&&v>b-z)do{o.he[b++]=o.he[z++]}while(0!=--v);else o.he.set(o.he.subarray(z,z+v),b),b+=v,z+=v,v=0;break}if(0!=(64&a))return f.Qt="invalid distance code",v=f.Gt-p,v=v>h>>3?h>>3:v,p+=v,d-=v,h-=v<<3,o.ue=w,o.ae=h,f.Gt=p,f.Yt+=d-f.oe,f.oe=d,o.write=b,-3;c+=l[S+2],c+=w&ft[a],S=3*(u+c),a=l[S]}break}if(0!=(64&a))return 0!=(32&a)?(v=f.Gt-p,v=v>h>>3?h>>3:v,p+=v,d-=v,h-=v<<3,o.ue=w,o.ae=h,f.Gt=p,f.Yt+=d-f.oe,f.oe=d,o.write=b,1):(f.Qt="invalid literal/length code",v=f.Gt-p,v=v>h>>3?h>>3:v,p+=v,d-=v,h-=v<<3,o.ue=w,o.ae=h,f.Gt=p,f.Yt+=d-f.oe,f.oe=d,o.write=b,-3);if(c+=l[S+2],c+=w&ft[a],S=3*(u+c),0===(a=l[S])){w>>=l[S+1],h-=l[S+1],o.he[b++]=l[S+2],y--;break}}else w>>=l[S+1],h-=l[S+1],o.he[b++]=l[S+2],y--}while(y>=258&&p>=10);return v=f.Gt-p,v=v>h>>3?h>>3:v,p+=v,d-=v,h-=v<<3,o.ue=w,o.ae=h,f.Gt=p,f.Yt+=d-f.oe,f.oe=d,o.write=b,0}t.init=(t,s,o,f,c,l)=>{e=0,a=t,w=s,r=o,h=f,i=c,d=l,n=null},t.de=(t,b,y)=>{let k,g,v,m,z,S,_,I=0,C=0,A=0;for(A=b.oe,m=b.Gt,I=t.ue,C=t.ae,z=t.write,S=z<t.read?t.read-z-1:t.end-z;;)switch(e){case 0:if(S>=258&&m>=10&&(t.ue=I,t.ae=C,b.Gt=m,b.Yt+=A-b.oe,b.oe=A,t.write=z,y=p(a,w,r,h,i,d,t,b),A=b.oe,m=b.Gt,I=t.ue,C=t.ae,z=t.write,S=z<t.read?t.read-z-1:t.end-z,0!=y)){e=1==y?7:9;break}f=a,n=r,o=h,e=1;case 1:for(k=f;k>C;){if(0===m)return t.ue=I,t.ae=C,b.Gt=m,b.Yt+=A-b.oe,b.oe=A,t.write=z,t.pe(b,y);y=0,m--,I|=(255&b.we(A++))<<C,C+=8}if(g=3*(o+(I&ft[k])),I>>>=n[g+1],C-=n[g+1],v=n[g],0===v){c=n[g+2],e=6;break}if(0!=(16&v)){l=15&v,s=n[g+2],e=2;break}if(0==(64&v)){f=v,o=g/3+n[g+2];break}if(0!=(32&v)){e=7;break}return e=9,b.Qt="invalid literal/length code",y=-3,t.ue=I,t.ae=C,b.Gt=m,b.Yt+=A-b.oe,b.oe=A,t.write=z,t.pe(b,y);case 2:for(k=l;k>C;){if(0===m)return t.ue=I,t.ae=C,b.Gt=m,b.Yt+=A-b.oe,b.oe=A,t.write=z,t.pe(b,y);y=0,m--,I|=(255&b.we(A++))<<C,C+=8}s+=I&ft[k],I>>=k,C-=k,f=w,n=i,o=d,e=3;case 3:for(k=f;k>C;){if(0===m)return t.ue=I,t.ae=C,b.Gt=m,b.Yt+=A-b.oe,b.oe=A,t.write=z,t.pe(b,y);y=0,m--,I|=(255&b.we(A++))<<C,C+=8}if(g=3*(o+(I&ft[k])),I>>=n[g+1],C-=n[g+1],v=n[g],0!=(16&v)){l=15&v,u=n[g+2],e=4;break}if(0==(64&v)){f=v,o=g/3+n[g+2];break}return e=9,b.Qt="invalid distance code",y=-3,t.ue=I,t.ae=C,b.Gt=m,b.Yt+=A-b.oe,b.oe=A,t.write=z,t.pe(b,y);case 4:for(k=l;k>C;){if(0===m)return t.ue=I,t.ae=C,b.Gt=m,b.Yt+=A-b.oe,b.oe=A,t.write=z,t.pe(b,y);y=0,m--,I|=(255&b.we(A++))<<C,C+=8}u+=I&ft[k],I>>=k,C-=k,e=5;case 5:for(_=z-u;0>_;)_+=t.end;for(;0!==s;){if(0===S&&(z==t.end&&0!==t.read&&(z=0,S=z<t.read?t.read-z-1:t.end-z),0===S&&(t.write=z,y=t.pe(b,y),z=t.write,S=z<t.read?t.read-z-1:t.end-z,z==t.end&&0!==t.read&&(z=0,S=z<t.read?t.read-z-1:t.end-z),0===S)))return t.ue=I,t.ae=C,b.Gt=m,b.Yt+=A-b.oe,b.oe=A,t.write=z,t.pe(b,y);t.he[z++]=t.he[_++],S--,_==t.end&&(_=0),s--}e=0;break;case 6:if(0===S&&(z==t.end&&0!==t.read&&(z=0,S=z<t.read?t.read-z-1:t.end-z),0===S&&(t.write=z,y=t.pe(b,y),z=t.write,S=z<t.read?t.read-z-1:t.end-z,z==t.end&&0!==t.read&&(z=0,S=z<t.read?t.read-z-1:t.end-z),0===S)))return t.ue=I,t.ae=C,b.Gt=m,b.Yt+=A-b.oe,b.oe=A,t.write=z,t.pe(b,y);y=0,t.he[z++]=c,S--,e=0;break;case 7:if(C>7&&(C-=8,m++,A--),t.write=z,y=t.pe(b,y),z=t.write,S=z<t.read?t.read-z-1:t.end-z,t.read!=t.write)return t.ue=I,t.ae=C,b.Gt=m,b.Yt+=A-b.oe,b.oe=A,t.write=z,t.pe(b,y);e=8;case 8:return y=1,t.ue=I,t.ae=C,b.Gt=m,b.Yt+=A-b.oe,b.oe=A,t.write=z,t.pe(b,y);case 9:return y=-3,t.ue=I,t.ae=C,b.Gt=m,b.Yt+=A-b.oe,b.oe=A,t.write=z,t.pe(b,y);default:return y=-2,t.ue=I,t.ae=C,b.Gt=m,b.Yt+=A-b.oe,b.oe=A,t.write=z,t.pe(b,y)}},t.be=()=>{}}dt.ye=(t,e,n,r)=>(t[0]=9,e[0]=5,n[0]=ct,r[0]=lt,0);const bt=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15];function yt(t,e){const n=this;let r,s=0,o=0,c=0,l=0;const u=[0],a=[0],w=new pt;let h=0,d=new f(4320);const p=new dt;n.ae=0,n.ue=0,n.he=new i(e),n.end=e,n.read=0,n.write=0,n.reset=(t,e)=>{e&&(e[0]=0),6==s&&w.be(t),s=0,n.ae=0,n.ue=0,n.read=n.write=0},n.reset(t,null),n.pe=(t,e)=>{let r,i,s;return i=t.fe,s=n.read,r=(s>n.write?n.end:n.write)-s,r>t.se&&(r=t.se),0!==r&&-5==e&&(e=0),t.se-=r,t.Zt+=r,t.re.set(n.he.subarray(s,s+r),i),i+=r,s+=r,s==n.end&&(s=0,n.write==n.end&&(n.write=0),r=n.write-s,r>t.se&&(r=t.se),0!==r&&-5==e&&(e=0),t.se-=r,t.Zt+=r,t.re.set(n.he.subarray(s,s+r),i),i+=r,s+=r),t.fe=i,n.read=s,e},n.de=(t,e)=>{let i,f,b,y,k,g,v,m;for(y=t.oe,k=t.Gt,f=n.ue,b=n.ae,g=n.write,v=g<n.read?n.read-g-1:n.end-g;;){let z,S,_,I,C,A,V,E;switch(s){case 0:for(;3>b;){if(0===k)return n.ue=f,n.ae=b,t.Gt=k,t.Yt+=y-t.oe,t.oe=y,n.write=g,n.pe(t,e);e=0,k--,f|=(255&t.we(y++))<<b,b+=8}switch(i=7&f,h=1&i,i>>>1){case 0:f>>>=3,b-=3,i=7&b,f>>>=i,b-=i,s=1;break;case 1:z=[],S=[],_=[[]],I=[[]],dt.ye(z,S,_,I),w.init(z[0],S[0],_[0],0,I[0],0),f>>>=3,b-=3,s=6;break;case 2:f>>>=3,b-=3,s=3;break;case 3:return f>>>=3,b-=3,s=9,t.Qt="invalid block type",e=-3,n.ue=f,n.ae=b,t.Gt=k,t.Yt+=y-t.oe,t.oe=y,n.write=g,n.pe(t,e)}break;case 1:for(;32>b;){if(0===k)return n.ue=f,n.ae=b,t.Gt=k,t.Yt+=y-t.oe,t.oe=y,n.write=g,n.pe(t,e);e=0,k--,f|=(255&t.we(y++))<<b,b+=8}if((~f>>>16&65535)!=(65535&f))return s=9,t.Qt="invalid stored block lengths",e=-3,n.ue=f,n.ae=b,t.Gt=k,t.Yt+=y-t.oe,t.oe=y,n.write=g,n.pe(t,e);o=65535&f,f=b=0,s=0!==o?2:0!==h?7:0;break;case 2:if(0===k)return n.ue=f,n.ae=b,t.Gt=k,t.Yt+=y-t.oe,t.oe=y,n.write=g,n.pe(t,e);if(0===v&&(g==n.end&&0!==n.read&&(g=0,v=g<n.read?n.read-g-1:n.end-g),0===v&&(n.write=g,e=n.pe(t,e),g=n.write,v=g<n.read?n.read-g-1:n.end-g,g==n.end&&0!==n.read&&(g=0,v=g<n.read?n.read-g-1:n.end-g),0===v)))return n.ue=f,n.ae=b,t.Gt=k,t.Yt+=y-t.oe,t.oe=y,n.write=g,n.pe(t,e);if(e=0,i=o,i>k&&(i=k),i>v&&(i=v),n.he.set(t.Jt(y,i),g),y+=i,k-=i,g+=i,v-=i,0!=(o-=i))break;s=0!==h?7:0;break;case 3:for(;14>b;){if(0===k)return n.ue=f,n.ae=b,t.Gt=k,t.Yt+=y-t.oe,t.oe=y,n.write=g,n.pe(t,e);e=0,k--,f|=(255&t.we(y++))<<b,b+=8}if(c=i=16383&f,(31&i)>29||(i>>5&31)>29)return s=9,t.Qt="too many length or distance symbols",e=-3,n.ue=f,n.ae=b,t.Gt=k,t.Yt+=y-t.oe,t.oe=y,n.write=g,n.pe(t,e);if(i=258+(31&i)+(i>>5&31),!r||r.length<i)r=[];else for(m=0;i>m;m++)r[m]=0;f>>>=14,b-=14,l=0,s=4;case 4:for(;4+(c>>>10)>l;){for(;3>b;){if(0===k)return n.ue=f,n.ae=b,t.Gt=k,t.Yt+=y-t.oe,t.oe=y,n.write=g,n.pe(t,e);e=0,k--,f|=(255&t.we(y++))<<b,b+=8}r[bt[l++]]=7&f,f>>>=3,b-=3}for(;19>l;)r[bt[l++]]=0;if(u[0]=7,i=p.ce(r,u,a,d,t),0!=i)return-3==(e=i)&&(r=null,s=9),n.ue=f,n.ae=b,t.Gt=k,t.Yt+=y-t.oe,t.oe=y,n.write=g,n.pe(t,e);l=0,s=5;case 5:for(;i=c,258+(31&i)+(i>>5&31)>l;){let o,w;for(i=u[0];i>b;){if(0===k)return n.ue=f,n.ae=b,t.Gt=k,t.Yt+=y-t.oe,t.oe=y,n.write=g,n.pe(t,e);e=0,k--,f|=(255&t.we(y++))<<b,b+=8}if(i=d[3*(a[0]+(f&ft[i]))+1],w=d[3*(a[0]+(f&ft[i]))+2],16>w)f>>>=i,b-=i,r[l++]=w;else{for(m=18==w?7:w-14,o=18==w?11:3;i+m>b;){if(0===k)return n.ue=f,n.ae=b,t.Gt=k,t.Yt+=y-t.oe,t.oe=y,n.write=g,n.pe(t,e);e=0,k--,f|=(255&t.we(y++))<<b,b+=8}if(f>>>=i,b-=i,o+=f&ft[m],f>>>=m,b-=m,m=l,i=c,m+o>258+(31&i)+(i>>5&31)||16==w&&1>m)return r=null,s=9,t.Qt="invalid bit length repeat",e=-3,n.ue=f,n.ae=b,t.Gt=k,t.Yt+=y-t.oe,t.oe=y,n.write=g,n.pe(t,e);w=16==w?r[m-1]:0;do{r[m++]=w}while(0!=--o);l=m}}if(a[0]=-1,C=[],A=[],V=[],E=[],C[0]=9,A[0]=6,i=c,i=p.le(257+(31&i),1+(i>>5&31),r,C,A,V,E,d,t),0!=i)return-3==i&&(r=null,s=9),e=i,n.ue=f,n.ae=b,t.Gt=k,t.Yt+=y-t.oe,t.oe=y,n.write=g,n.pe(t,e);w.init(C[0],A[0],d,V[0],d,E[0]),s=6;case 6:if(n.ue=f,n.ae=b,t.Gt=k,t.Yt+=y-t.oe,t.oe=y,n.write=g,1!=(e=w.de(n,t,e)))return n.pe(t,e);if(e=0,w.be(t),y=t.oe,k=t.Gt,f=n.ue,b=n.ae,g=n.write,v=g<n.read?n.read-g-1:n.end-g,0===h){s=0;break}s=7;case 7:if(n.write=g,e=n.pe(t,e),g=n.write,v=g<n.read?n.read-g-1:n.end-g,n.read!=n.write)return n.ue=f,n.ae=b,t.Gt=k,t.Yt+=y-t.oe,t.oe=y,n.write=g,n.pe(t,e);s=8;case 8:return e=1,n.ue=f,n.ae=b,t.Gt=k,t.Yt+=y-t.oe,t.oe=y,n.write=g,n.pe(t,e);case 9:return e=-3,n.ue=f,n.ae=b,t.Gt=k,t.Yt+=y-t.oe,t.oe=y,n.write=g,n.pe(t,e);default:return e=-2,n.ue=f,n.ae=b,t.Gt=k,t.Yt+=y-t.oe,t.oe=y,n.write=g,n.pe(t,e)}}},n.be=t=>{n.reset(t,null),n.he=null,d=null},n.ke=(t,e,r)=>{n.he.set(t.subarray(e,e+r),0),n.read=n.write=r},n.ge=()=>1==s?1:0}const kt=[0,0,255,255];function gt(){const t=this;function e(t){return t&&t.ve?(t.Yt=t.Zt=0,t.Qt=null,t.ve.mode=7,t.ve.me.reset(t,null),0):-2}t.mode=0,t.method=0,t.ze=[0],t.Se=0,t.marker=0,t._e=0,t.Ie=e=>(t.me&&t.me.be(e),t.me=null,0),t.Ce=(n,r)=>(n.Qt=null,t.me=null,8>r||r>15?(t.Ie(n),-2):(t._e=r,n.ve.me=new yt(n,1<<r),e(n),0)),t.nt=(t,e)=>{let n,r;if(!t||!t.ve||!t.ie)return-2;const i=t.ve;for(e=4==e?-5:0,n=-5;;)switch(i.mode){case 0:if(0===t.Gt)return n;if(n=e,t.Gt--,t.Yt++,8!=(15&(i.method=t.we(t.oe++)))){i.mode=13,t.Qt="unknown compression method",i.marker=5;break}if(8+(i.method>>4)>i._e){i.mode=13,t.Qt="invalid win size",i.marker=5;break}i.mode=1;case 1:if(0===t.Gt)return n;if(n=e,t.Gt--,t.Yt++,r=255&t.we(t.oe++),((i.method<<8)+r)%31!=0){i.mode=13,t.Qt="incorrect header check",i.marker=5;break}if(0==(32&r)){i.mode=7;break}i.mode=2;case 2:if(0===t.Gt)return n;n=e,t.Gt--,t.Yt++,i.Se=(255&t.we(t.oe++))<<24&4278190080,i.mode=3;case 3:if(0===t.Gt)return n;n=e,t.Gt--,t.Yt++,i.Se+=(255&t.we(t.oe++))<<16&16711680,i.mode=4;case 4:if(0===t.Gt)return n;n=e,t.Gt--,t.Yt++,i.Se+=(255&t.we(t.oe++))<<8&65280,i.mode=5;case 5:return 0===t.Gt?n:(n=e,t.Gt--,t.Yt++,i.Se+=255&t.we(t.oe++),i.mode=6,2);case 6:return i.mode=13,t.Qt="need dictionary",i.marker=0,-2;case 7:if(n=i.me.de(t,n),-3==n){i.mode=13,i.marker=0;break}if(0==n&&(n=e),1!=n)return n;n=e,i.me.reset(t,i.ze),i.mode=12;case 12:return t.Gt=0,1;case 13:return-3;default:return-2}},t.Ae=(t,e,n)=>{let r=0,i=n;if(!t||!t.ve||6!=t.ve.mode)return-2;const s=t.ve;return i<1<<s._e||(i=(1<<s._e)-1,r=n-i),s.me.ke(e,r,i),s.mode=7,0},t.Ve=t=>{let n,r,i,s,o;if(!t||!t.ve)return-2;const f=t.ve;if(13!=f.mode&&(f.mode=13,f.marker=0),0===(n=t.Gt))return-5;for(r=t.oe,i=f.marker;0!==n&&4>i;)t.we(r)==kt[i]?i++:i=0!==t.we(r)?0:4-i,r++,n--;return t.Yt+=r-t.oe,t.oe=r,t.Gt=n,f.marker=i,4!=i?-3:(s=t.Yt,o=t.Zt,e(t),t.Yt=s,t.Zt=o,f.mode=7,0)},t.Ee=t=>t&&t.ve&&t.ve.me?t.ve.me.ge():-2}function vt(){}function mt(t){const e=new vt,s=t&&t.et?n.floor(2*t.et):131072,o=new i(s);let f=!1;e.Ce(),e.re=o,this.append=(t,n)=>{const c=[];let l,u,a=0,w=0,h=0;if(0!==t.length){e.oe=0,e.ie=t,e.Gt=t.length;do{if(e.fe=0,e.se=s,0!==e.Gt||f||(e.oe=0,f=!0),l=e.nt(0),f&&-5===l){if(0!==e.Gt)throw new r("inflating: bad input")}else if(0!==l&&1!==l)throw new r("inflating: "+e.Qt);if((f||1===l)&&e.Gt===t.length)throw new r("inflating: bad input");e.fe&&(e.fe===s?c.push(new i(o)):c.push(o.slice(0,e.fe))),h+=e.fe,n&&e.oe>0&&e.oe!=a&&(n(e.oe),a=e.oe)}while(e.Gt>0||0===e.se);return c.length>1?(u=new i(h),c.forEach((t=>{u.set(t,w),w+=t.length}))):u=c[0]||new i(0),u}},this.flush=()=>{e.Ie()}}vt.prototype={Ce:function(t){const e=this;return e.ve=new gt,t||(t=15),e.ve.Ce(e,t)},nt:function(t){const e=this;return e.ve?e.ve.nt(e,t):-2},Ie:function(){const t=this;if(!t.ve)return-2;const e=t.ve.Ie(t);return t.ve=null,e},Ve:function(){const t=this;return t.ve?t.ve.Ve(t):-2},Ae:function(t,e){const n=this;return n.ve?n.ve.Ae(n,t,e):-2},we:function(t){return this.ie[t]},Jt:function(t,e){return this.ie.subarray(t,t+e)}},self.initCodec=()=>{self.Deflate=ot,self.Inflate=mt};\n'],{type:"text/javascript"}));t({workerScripts:{inflate:[e],deflate:[e]}});}};
-
- /*
- Copyright (c) 2022 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.
- */
-
- function getMimeType() {
- return "application/octet-stream";
- }
-
- /*
- Copyright (c) 2022 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.
- */
-
- var streamCodecShim = (library, options = {}, registerDataHandler) => {
- return {
- Deflate: createCodecClass(library.Deflate, options.deflate, registerDataHandler),
- Inflate: createCodecClass(library.Inflate, options.inflate, registerDataHandler)
- };
- };
-
- function createCodecClass(constructor, constructorOptions, registerDataHandler) {
- return class {
-
- constructor(options) {
- const codecAdapter = this;
- const onData = data => {
- if (codecAdapter.pendingData) {
- const pendingData = codecAdapter.pendingData;
- codecAdapter.pendingData = new Uint8Array(pendingData.length + data.length);
- codecAdapter.pendingData.set(pendingData, 0);
- codecAdapter.pendingData.set(data, pendingData.length);
- } else {
- codecAdapter.pendingData = new Uint8Array(data);
- }
- };
- codecAdapter.codec = new constructor(Object.assign({}, constructorOptions, options));
- registerDataHandler(codecAdapter.codec, onData);
- }
- async append(data) {
- this.codec.push(data);
- return getResponse(this);
- }
- async flush() {
- this.codec.push(new Uint8Array(0), true);
- return getResponse(this);
- }
- };
-
- function getResponse(codec) {
- if (codec.pendingData) {
- const output = codec.pendingData;
- codec.pendingData = null;
- return output;
- } else {
- return new Uint8Array(0);
- }
- }
- }
-
- /*
- Copyright (c) 2022 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.
- */
-
- const table = [];
- for (let i = 0; i < 256; i++) {
- let t = i;
- for (let j = 0; j < 8; j++) {
- if (t & 1) {
- t = (t >>> 1) ^ 0xEDB88320;
- } else {
- t = t >>> 1;
- }
- }
- table[i] = t;
- }
-
- class Crc32 {
-
- constructor(crc) {
- this.crc = crc || -1;
- }
-
- append(data) {
- let crc = this.crc | 0;
- for (let offset = 0, length = data.length | 0; offset < length; offset++) {
- crc = (crc >>> 8) ^ table[(crc ^ data[offset]) & 0xFF];
- }
- this.crc = crc;
- }
-
- get() {
- return ~this.crc;
- }
- }
-
- /*
- Copyright (c) 2022 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.
- */
-
- function encodeText(value) {
- if (typeof TextEncoder == "undefined") {
- value = unescape(encodeURIComponent(value));
- const result = new Uint8Array(value.length);
- for (let i = 0; i < result.length; i++) {
- result[i] = value.charCodeAt(i);
- }
- return result;
- } else {
- return new TextEncoder().encode(value);
- }
- }
-
- // Derived from https://github.com/xqdoo00o/jszip/blob/master/lib/sjcl.js
-
- /** @fileOverview Javascript cryptography implementation.
- *
- * Crush to remove comments, shorten variable names and
- * generally reduce transmission size.
- *
- * @author Emily Stark
- * @author Mike Hamburg
- * @author Dan Boneh
- */
-
- /*jslint indent: 2, bitwise: false, nomen: false, plusplus: false, white: false, regexp: false */
-
- /** @fileOverview Arrays of bits, encoded as arrays of Numbers.
- *
- * @author Emily Stark
- * @author Mike Hamburg
- * @author Dan Boneh
- */
-
- /**
- * Arrays of bits, encoded as arrays of Numbers.
- * @namespace
- * @description
- * <p>
- * These objects are the currency accepted by SJCL's crypto functions.
- * </p>
- *
- * <p>
- * Most of our crypto primitives operate on arrays of 4-byte words internally,
- * but many of them can take arguments that are not a multiple of 4 bytes.
- * This library encodes arrays of bits (whose size need not be a multiple of 8
- * bits) as arrays of 32-bit words. The bits are packed, big-endian, into an
- * array of words, 32 bits at a time. Since the words are double-precision
- * floating point numbers, they fit some extra data. We use this (in a private,
- * possibly-changing manner) to encode the number of bits actually present
- * in the last word of the array.
- * </p>
- *
- * <p>
- * Because bitwise ops clear this out-of-band data, these arrays can be passed
- * to ciphers like AES which want arrays of words.
- * </p>
- */
- const bitArray = {
- /**
- * Concatenate two bit arrays.
- * @param {bitArray} a1 The first array.
- * @param {bitArray} a2 The second array.
- * @return {bitArray} The concatenation of a1 and a2.
- */
- concat(a1, a2) {
- if (a1.length === 0 || a2.length === 0) {
- return a1.concat(a2);
- }
-
- const last = a1[a1.length - 1], shift = bitArray.getPartial(last);
- if (shift === 32) {
- return a1.concat(a2);
- } else {
- return bitArray._shiftRight(a2, shift, last | 0, a1.slice(0, a1.length - 1));
- }
- },
-
- /**
- * Find the length of an array of bits.
- * @param {bitArray} a The array.
- * @return {Number} The length of a, in bits.
- */
- bitLength(a) {
- const l = a.length;
- if (l === 0) {
- return 0;
- }
- const x = a[l - 1];
- return (l - 1) * 32 + bitArray.getPartial(x);
- },
-
- /**
- * Truncate an array.
- * @param {bitArray} a The array.
- * @param {Number} len The length to truncate to, in bits.
- * @return {bitArray} A new array, truncated to len bits.
- */
- clamp(a, len) {
- if (a.length * 32 < len) {
- return a;
- }
- a = a.slice(0, Math.ceil(len / 32));
- const l = a.length;
- len = len & 31;
- if (l > 0 && len) {
- a[l - 1] = bitArray.partial(len, a[l - 1] & 0x80000000 >> (len - 1), 1);
- }
- return a;
- },
-
- /**
- * Make a partial word for a bit array.
- * @param {Number} len The number of bits in the word.
- * @param {Number} x The bits.
- * @param {Number} [_end=0] Pass 1 if x has already been shifted to the high side.
- * @return {Number} The partial word.
- */
- partial(len, x, _end) {
- if (len === 32) {
- return x;
- }
- return (_end ? x | 0 : x << (32 - len)) + len * 0x10000000000;
- },
-
- /**
- * Get the number of bits used by a partial word.
- * @param {Number} x The partial word.
- * @return {Number} The number of bits used by the partial word.
- */
- getPartial(x) {
- return Math.round(x / 0x10000000000) || 32;
- },
-
- /** Shift an array right.
- * @param {bitArray} a The array to shift.
- * @param {Number} shift The number of bits to shift.
- * @param {Number} [carry=0] A byte to carry in
- * @param {bitArray} [out=[]] An array to prepend to the output.
- * @private
- */
- _shiftRight(a, shift, carry, out) {
- if (out === undefined) {
- out = [];
- }
-
- for (; shift >= 32; shift -= 32) {
- out.push(carry);
- carry = 0;
- }
- if (shift === 0) {
- return out.concat(a);
- }
-
- for (let i = 0; i < a.length; i++) {
- out.push(carry | a[i] >>> shift);
- carry = a[i] << (32 - shift);
- }
- const last2 = a.length ? a[a.length - 1] : 0;
- const shift2 = bitArray.getPartial(last2);
- out.push(bitArray.partial(shift + shift2 & 31, (shift + shift2 > 32) ? carry : out.pop(), 1));
- return out;
- }
- };
-
- /** @fileOverview Bit array codec implementations.
- *
- * @author Emily Stark
- * @author Mike Hamburg
- * @author Dan Boneh
- */
-
- /**
- * Arrays of bytes
- * @namespace
- */
- const codec = {
- bytes: {
- /** Convert from a bitArray to an array of bytes. */
- fromBits(arr) {
- const bl = bitArray.bitLength(arr);
- const byteLength = bl / 8;
- const out = new Uint8Array(byteLength);
- let tmp;
- for (let i = 0; i < byteLength; i++) {
- if ((i & 3) === 0) {
- tmp = arr[i / 4];
- }
- out[i] = tmp >>> 24;
- tmp <<= 8;
- }
- return out;
- },
- /** Convert from an array of bytes to a bitArray. */
- toBits(bytes) {
- const out = [];
- let i;
- let tmp = 0;
- for (i = 0; i < bytes.length; i++) {
- tmp = tmp << 8 | bytes[i];
- if ((i & 3) === 3) {
- out.push(tmp);
- tmp = 0;
- }
- }
- if (i & 3) {
- out.push(bitArray.partial(8 * (i & 3), tmp));
- }
- return out;
- }
- }
- };
-
- const hash = {};
-
- /**
- * Context for a SHA-1 operation in progress.
- * @constructor
- */
- hash.sha1 = function (hash) {
- if (hash) {
- this._h = hash._h.slice(0);
- this._buffer = hash._buffer.slice(0);
- this._length = hash._length;
- } else {
- this.reset();
- }
- };
-
- hash.sha1.prototype = {
- /**
- * The hash's block size, in bits.
- * @constant
- */
- blockSize: 512,
-
- /**
- * Reset the hash state.
- * @return this
- */
- reset: function () {
- const sha1 = this;
- sha1._h = this._init.slice(0);
- sha1._buffer = [];
- sha1._length = 0;
- return sha1;
- },
-
- /**
- * Input several words to the hash.
- * @param {bitArray|String} data the data to hash.
- * @return this
- */
- update: function (data) {
- const sha1 = this;
- if (typeof data === "string") {
- data = codec.utf8String.toBits(data);
- }
- const b = sha1._buffer = bitArray.concat(sha1._buffer, data);
- const ol = sha1._length;
- const nl = sha1._length = ol + bitArray.bitLength(data);
- if (nl > 9007199254740991) {
- throw new Error("Cannot hash more than 2^53 - 1 bits");
- }
- const c = new Uint32Array(b);
- let j = 0;
- for (let i = sha1.blockSize + ol - ((sha1.blockSize + ol) & (sha1.blockSize - 1)); i <= nl;
- i += sha1.blockSize) {
- sha1._block(c.subarray(16 * j, 16 * (j + 1)));
- j += 1;
- }
- b.splice(0, 16 * j);
- return sha1;
- },
-
- /**
- * Complete hashing and output the hash value.
- * @return {bitArray} The hash value, an array of 5 big-endian words. TODO
- */
- finalize: function () {
- const sha1 = this;
- let b = sha1._buffer;
- const h = sha1._h;
-
- // Round out and push the buffer
- b = bitArray.concat(b, [bitArray.partial(1, 1)]);
- // Round out the buffer to a multiple of 16 words, less the 2 length words.
- for (let i = b.length + 2; i & 15; i++) {
- b.push(0);
- }
-
- // append the length
- b.push(Math.floor(sha1._length / 0x100000000));
- b.push(sha1._length | 0);
-
- while (b.length) {
- sha1._block(b.splice(0, 16));
- }
-
- sha1.reset();
- return h;
- },
-
- /**
- * The SHA-1 initialization vector.
- * @private
- */
- _init: [0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476, 0xC3D2E1F0],
-
- /**
- * The SHA-1 hash key.
- * @private
- */
- _key: [0x5A827999, 0x6ED9EBA1, 0x8F1BBCDC, 0xCA62C1D6],
-
- /**
- * The SHA-1 logical functions f(0), f(1), ..., f(79).
- * @private
- */
- _f: function (t, b, c, d) {
- if (t <= 19) {
- return (b & c) | (~b & d);
- } else if (t <= 39) {
- return b ^ c ^ d;
- } else if (t <= 59) {
- return (b & c) | (b & d) | (c & d);
- } else if (t <= 79) {
- return b ^ c ^ d;
- }
- },
-
- /**
- * Circular left-shift operator.
- * @private
- */
- _S: function (n, x) {
- return (x << n) | (x >>> 32 - n);
- },
-
- /**
- * Perform one cycle of SHA-1.
- * @param {Uint32Array|bitArray} words one block of words.
- * @private
- */
- _block: function (words) {
- const sha1 = this;
- const h = sha1._h;
- // When words is passed to _block, it has 16 elements. SHA1 _block
- // function extends words with new elements (at the end there are 80 elements).
- // The problem is that if we use Uint32Array instead of Array,
- // the length of Uint32Array cannot be changed. Thus, we replace words with a
- // normal Array here.
- const w = Array(80); // do not use Uint32Array here as the instantiation is slower
- for (let j = 0; j < 16; j++) {
- w[j] = words[j];
- }
-
- let a = h[0];
- let b = h[1];
- let c = h[2];
- let d = h[3];
- let e = h[4];
-
- for (let t = 0; t <= 79; t++) {
- if (t >= 16) {
- w[t] = sha1._S(1, w[t - 3] ^ w[t - 8] ^ w[t - 14] ^ w[t - 16]);
- }
- const tmp = (sha1._S(5, a) + sha1._f(t, b, c, d) + e + w[t] +
- sha1._key[Math.floor(t / 20)]) | 0;
- e = d;
- d = c;
- c = sha1._S(30, b);
- b = a;
- a = tmp;
- }
-
- h[0] = (h[0] + a) | 0;
- h[1] = (h[1] + b) | 0;
- h[2] = (h[2] + c) | 0;
- h[3] = (h[3] + d) | 0;
- h[4] = (h[4] + e) | 0;
- }
- };
-
- /** @fileOverview Low-level AES implementation.
- *
- * This file contains a low-level implementation of AES, optimized for
- * size and for efficiency on several browsers. It is based on
- * OpenSSL's aes_core.c, a public-domain implementation by Vincent
- * Rijmen, Antoon Bosselaers and Paulo Barreto.
- *
- * An older version of this implementation is available in the public
- * domain, but this one is (c) Emily Stark, Mike Hamburg, Dan Boneh,
- * Stanford University 2008-2010 and BSD-licensed for liability
- * reasons.
- *
- * @author Emily Stark
- * @author Mike Hamburg
- * @author Dan Boneh
- */
-
- const cipher = {};
-
- /**
- * Schedule out an AES key for both encryption and decryption. This
- * is a low-level class. Use a cipher mode to do bulk encryption.
- *
- * @constructor
- * @param {Array} key The key as an array of 4, 6 or 8 words.
- */
- cipher.aes = class {
- constructor(key) {
- /**
- * The expanded S-box and inverse S-box tables. These will be computed
- * on the client so that we don't have to send them down the wire.
- *
- * There are two tables, _tables[0] is for encryption and
- * _tables[1] is for decryption.
- *
- * The first 4 sub-tables are the expanded S-box with MixColumns. The
- * last (_tables[01][4]) is the S-box itself.
- *
- * @private
- */
- const aes = this;
- aes._tables = [[[], [], [], [], []], [[], [], [], [], []]];
-
- if (!aes._tables[0][0][0]) {
- aes._precompute();
- }
-
- const sbox = aes._tables[0][4];
- const decTable = aes._tables[1];
- const keyLen = key.length;
-
- let i, encKey, decKey, rcon = 1;
-
- if (keyLen !== 4 && keyLen !== 6 && keyLen !== 8) {
- throw new Error("invalid aes key size");
- }
-
- aes._key = [encKey = key.slice(0), decKey = []];
-
- // schedule encryption keys
- for (i = keyLen; i < 4 * keyLen + 28; i++) {
- let tmp = encKey[i - 1];
-
- // apply sbox
- if (i % keyLen === 0 || (keyLen === 8 && i % keyLen === 4)) {
- tmp = sbox[tmp >>> 24] << 24 ^ sbox[tmp >> 16 & 255] << 16 ^ sbox[tmp >> 8 & 255] << 8 ^ sbox[tmp & 255];
-
- // shift rows and add rcon
- if (i % keyLen === 0) {
- tmp = tmp << 8 ^ tmp >>> 24 ^ rcon << 24;
- rcon = rcon << 1 ^ (rcon >> 7) * 283;
- }
- }
-
- encKey[i] = encKey[i - keyLen] ^ tmp;
- }
-
- // schedule decryption keys
- for (let j = 0; i; j++, i--) {
- const tmp = encKey[j & 3 ? i : i - 4];
- if (i <= 4 || j < 4) {
- decKey[j] = tmp;
- } else {
- decKey[j] = decTable[0][sbox[tmp >>> 24]] ^
- decTable[1][sbox[tmp >> 16 & 255]] ^
- decTable[2][sbox[tmp >> 8 & 255]] ^
- decTable[3][sbox[tmp & 255]];
- }
- }
- }
- // public
- /* Something like this might appear here eventually
- name: "AES",
- blockSize: 4,
- keySizes: [4,6,8],
- */
-
- /**
- * Encrypt an array of 4 big-endian words.
- * @param {Array} data The plaintext.
- * @return {Array} The ciphertext.
- */
- encrypt(data) {
- return this._crypt(data, 0);
- }
-
- /**
- * Decrypt an array of 4 big-endian words.
- * @param {Array} data The ciphertext.
- * @return {Array} The plaintext.
- */
- decrypt(data) {
- return this._crypt(data, 1);
- }
-
- /**
- * Expand the S-box tables.
- *
- * @private
- */
- _precompute() {
- const encTable = this._tables[0];
- const decTable = this._tables[1];
- const sbox = encTable[4];
- const sboxInv = decTable[4];
- const d = [];
- const th = [];
- let xInv, x2, x4, x8;
-
- // Compute double and third tables
- for (let i = 0; i < 256; i++) {
- th[(d[i] = i << 1 ^ (i >> 7) * 283) ^ i] = i;
- }
-
- for (let x = xInv = 0; !sbox[x]; x ^= x2 || 1, xInv = th[xInv] || 1) {
- // Compute sbox
- let s = xInv ^ xInv << 1 ^ xInv << 2 ^ xInv << 3 ^ xInv << 4;
- s = s >> 8 ^ s & 255 ^ 99;
- sbox[x] = s;
- sboxInv[s] = x;
-
- // Compute MixColumns
- x8 = d[x4 = d[x2 = d[x]]];
- let tDec = x8 * 0x1010101 ^ x4 * 0x10001 ^ x2 * 0x101 ^ x * 0x1010100;
- let tEnc = d[s] * 0x101 ^ s * 0x1010100;
-
- for (let i = 0; i < 4; i++) {
- encTable[i][x] = tEnc = tEnc << 24 ^ tEnc >>> 8;
- decTable[i][s] = tDec = tDec << 24 ^ tDec >>> 8;
- }
- }
-
- // Compactify. Considerable speedup on Firefox.
- for (let i = 0; i < 5; i++) {
- encTable[i] = encTable[i].slice(0);
- decTable[i] = decTable[i].slice(0);
- }
- }
-
- /**
- * Encryption and decryption core.
- * @param {Array} input Four words to be encrypted or decrypted.
- * @param dir The direction, 0 for encrypt and 1 for decrypt.
- * @return {Array} The four encrypted or decrypted words.
- * @private
- */
- _crypt(input, dir) {
- if (input.length !== 4) {
- throw new Error("invalid aes block size");
- }
-
- const key = this._key[dir];
-
- const nInnerRounds = key.length / 4 - 2;
- const out = [0, 0, 0, 0];
- const table = this._tables[dir];
-
- // load up the tables
- const t0 = table[0];
- const t1 = table[1];
- const t2 = table[2];
- const t3 = table[3];
- const sbox = table[4];
-
- // state variables a,b,c,d are loaded with pre-whitened data
- let a = input[0] ^ key[0];
- let b = input[dir ? 3 : 1] ^ key[1];
- let c = input[2] ^ key[2];
- let d = input[dir ? 1 : 3] ^ key[3];
- let kIndex = 4;
- let a2, b2, c2;
-
- // Inner rounds. Cribbed from OpenSSL.
- for (let i = 0; i < nInnerRounds; i++) {
- a2 = t0[a >>> 24] ^ t1[b >> 16 & 255] ^ t2[c >> 8 & 255] ^ t3[d & 255] ^ key[kIndex];
- b2 = t0[b >>> 24] ^ t1[c >> 16 & 255] ^ t2[d >> 8 & 255] ^ t3[a & 255] ^ key[kIndex + 1];
- c2 = t0[c >>> 24] ^ t1[d >> 16 & 255] ^ t2[a >> 8 & 255] ^ t3[b & 255] ^ key[kIndex + 2];
- d = t0[d >>> 24] ^ t1[a >> 16 & 255] ^ t2[b >> 8 & 255] ^ t3[c & 255] ^ key[kIndex + 3];
- kIndex += 4;
- a = a2; b = b2; c = c2;
- }
-
- // Last round.
- for (let i = 0; i < 4; i++) {
- out[dir ? 3 & -i : i] =
- sbox[a >>> 24] << 24 ^
- sbox[b >> 16 & 255] << 16 ^
- sbox[c >> 8 & 255] << 8 ^
- sbox[d & 255] ^
- key[kIndex++];
- a2 = a; a = b; b = c; c = d; d = a2;
- }
-
- return out;
- }
- };
-
- /** @fileOverview CTR mode implementation.
- *
- * Special thanks to Roy Nicholson for pointing out a bug in our
- * implementation.
- *
- * @author Emily Stark
- * @author Mike Hamburg
- * @author Dan Boneh
- */
-
- /** Brian Gladman's CTR Mode.
- * @constructor
- * @param {Object} _prf The aes instance to generate key.
- * @param {bitArray} _iv The iv for ctr mode, it must be 128 bits.
- */
-
- const mode = {};
-
- /**
- * Brian Gladman's CTR Mode.
- * @namespace
- */
- mode.ctrGladman = class {
- constructor(prf, iv) {
- this._prf = prf;
- this._initIv = iv;
- this._iv = iv;
- }
-
- reset() {
- this._iv = this._initIv;
- }
-
- /** Input some data to calculate.
- * @param {bitArray} data the data to process, it must be intergral multiple of 128 bits unless it's the last.
- */
- update(data) {
- return this.calculate(this._prf, data, this._iv);
- }
-
- incWord(word) {
- if (((word >> 24) & 0xff) === 0xff) { //overflow
- let b1 = (word >> 16) & 0xff;
- let b2 = (word >> 8) & 0xff;
- let b3 = word & 0xff;
-
- if (b1 === 0xff) { // overflow b1
- b1 = 0;
- if (b2 === 0xff) {
- b2 = 0;
- if (b3 === 0xff) {
- b3 = 0;
- } else {
- ++b3;
- }
- } else {
- ++b2;
- }
- } else {
- ++b1;
- }
-
- word = 0;
- word += (b1 << 16);
- word += (b2 << 8);
- word += b3;
- } else {
- word += (0x01 << 24);
- }
- return word;
- }
-
- incCounter(counter) {
- if ((counter[0] = this.incWord(counter[0])) === 0) {
- // encr_data in fileenc.c from Dr Brian Gladman's counts only with DWORD j < 8
- counter[1] = this.incWord(counter[1]);
- }
- }
-
- calculate(prf, data, iv) {
- let l;
- if (!(l = data.length)) {
- return [];
- }
- const bl = bitArray.bitLength(data);
- for (let i = 0; i < l; i += 4) {
- this.incCounter(iv);
- const e = prf.encrypt(iv);
- data[i] ^= e[0];
- data[i + 1] ^= e[1];
- data[i + 2] ^= e[2];
- data[i + 3] ^= e[3];
- }
- return bitArray.clamp(data, bl);
- }
- };
-
-
- const misc = {};
-
- /** @fileOverview HMAC implementation.
- *
- * @author Emily Stark
- * @author Mike Hamburg
- * @author Dan Boneh
- */
-
- /** HMAC with the specified hash function.
- * @constructor
- * @param {bitArray} key the key for HMAC.
- * @param {Object} [Hash=hash.sha1] The hash function to use.
- */
- misc.hmacSha1 = class {
-
- constructor(key) {
- const hmac = this;
- const Hash = hmac._hash = hash.sha1;
- const exKey = [[], []];
- const bs = Hash.prototype.blockSize / 32;
- hmac._baseHash = [new Hash(), new Hash()];
-
- if (key.length > bs) {
- key = Hash.hash(key);
- }
-
- for (let i = 0; i < bs; i++) {
- exKey[0][i] = key[i] ^ 0x36363636;
- exKey[1][i] = key[i] ^ 0x5C5C5C5C;
- }
-
- hmac._baseHash[0].update(exKey[0]);
- hmac._baseHash[1].update(exKey[1]);
- hmac._resultHash = new Hash(hmac._baseHash[0]);
- }
- reset() {
- const hmac = this;
- hmac._resultHash = new hmac._hash(hmac._baseHash[0]);
- hmac._updated = false;
- }
-
- update(data) {
- const hmac = this;
- hmac._updated = true;
- hmac._resultHash.update(data);
- }
-
- digest() {
- const hmac = this;
- const w = hmac._resultHash.finalize();
- const result = new (hmac._hash)(hmac._baseHash[1]).update(w).finalize();
-
- hmac.reset();
-
- return result;
- }
- };
-
- /*
- Copyright (c) 2022 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.
- */
-
- const ERR_INVALID_PASSWORD = "Invalid pasword";
- const BLOCK_LENGTH = 16;
- const RAW_FORMAT = "raw";
- const PBKDF2_ALGORITHM = { name: "PBKDF2" };
- const HASH_ALGORITHM = { name: "HMAC" };
- const HASH_FUNCTION = "SHA-1";
- const BASE_KEY_ALGORITHM = Object.assign({ hash: HASH_ALGORITHM }, PBKDF2_ALGORITHM);
- const DERIVED_BITS_ALGORITHM = Object.assign({ iterations: 1000, hash: { name: HASH_FUNCTION } }, PBKDF2_ALGORITHM);
- const DERIVED_BITS_USAGE = ["deriveBits"];
- const SALT_LENGTH = [8, 12, 16];
- const KEY_LENGTH = [16, 24, 32];
- const SIGNATURE_LENGTH = 10;
- const COUNTER_DEFAULT_VALUE = [0, 0, 0, 0];
- const codecBytes = codec.bytes;
- const Aes = cipher.aes;
- const CtrGladman = mode.ctrGladman;
- const HmacSha1 = misc.hmacSha1;
- class AESDecrypt {
-
- constructor(password, signed, strength) {
- Object.assign(this, {
- password,
- signed,
- strength: strength - 1,
- pendingInput: new Uint8Array(0)
- });
- }
-
- async append(input) {
- const aesCrypto = this;
- if (aesCrypto.password) {
- const preamble = subarray(input, 0, SALT_LENGTH[aesCrypto.strength] + 2);
- await createDecryptionKeys(aesCrypto, preamble, aesCrypto.password);
- aesCrypto.password = null;
- aesCrypto.aesCtrGladman = new CtrGladman(new Aes(aesCrypto.keys.key), Array.from(COUNTER_DEFAULT_VALUE));
- aesCrypto.hmac = new HmacSha1(aesCrypto.keys.authentication);
- input = subarray(input, SALT_LENGTH[aesCrypto.strength] + 2);
- }
- const output = new Uint8Array(input.length - SIGNATURE_LENGTH - ((input.length - SIGNATURE_LENGTH) % BLOCK_LENGTH));
- return append(aesCrypto, input, output, 0, SIGNATURE_LENGTH, true);
- }
-
- flush() {
- const aesCrypto = this;
- const pendingInput = aesCrypto.pendingInput;
- const chunkToDecrypt = subarray(pendingInput, 0, pendingInput.length - SIGNATURE_LENGTH);
- const originalSignature = subarray(pendingInput, pendingInput.length - SIGNATURE_LENGTH);
- let decryptedChunkArray = new Uint8Array(0);
- if (chunkToDecrypt.length) {
- const encryptedChunk = codecBytes.toBits(chunkToDecrypt);
- aesCrypto.hmac.update(encryptedChunk);
- const decryptedChunk = aesCrypto.aesCtrGladman.update(encryptedChunk);
- decryptedChunkArray = codecBytes.fromBits(decryptedChunk);
- }
- let valid = true;
- if (aesCrypto.signed) {
- const signature = subarray(codecBytes.fromBits(aesCrypto.hmac.digest()), 0, SIGNATURE_LENGTH);
- for (let indexSignature = 0; indexSignature < SIGNATURE_LENGTH; indexSignature++) {
- if (signature[indexSignature] != originalSignature[indexSignature]) {
- valid = false;
- }
- }
- }
- return {
- valid,
- data: decryptedChunkArray
- };
- }
- }
-
- class AESEncrypt {
-
- constructor(password, strength) {
- Object.assign(this, {
- password,
- strength: strength - 1,
- pendingInput: new Uint8Array(0)
- });
- }
-
- async append(input) {
- const aesCrypto = this;
- let preamble = new Uint8Array(0);
- if (aesCrypto.password) {
- preamble = await createEncryptionKeys(aesCrypto, aesCrypto.password);
- aesCrypto.password = null;
- aesCrypto.aesCtrGladman = new CtrGladman(new Aes(aesCrypto.keys.key), Array.from(COUNTER_DEFAULT_VALUE));
- aesCrypto.hmac = new HmacSha1(aesCrypto.keys.authentication);
- }
- const output = new Uint8Array(preamble.length + input.length - (input.length % BLOCK_LENGTH));
- output.set(preamble, 0);
- return append(aesCrypto, input, output, preamble.length, 0);
- }
-
- flush() {
- const aesCrypto = this;
- let encryptedChunkArray = new Uint8Array(0);
- if (aesCrypto.pendingInput.length) {
- const encryptedChunk = aesCrypto.aesCtrGladman.update(codecBytes.toBits(aesCrypto.pendingInput));
- aesCrypto.hmac.update(encryptedChunk);
- encryptedChunkArray = codecBytes.fromBits(encryptedChunk);
- }
- const signature = subarray(codecBytes.fromBits(aesCrypto.hmac.digest()), 0, SIGNATURE_LENGTH);
- return {
- data: concat(encryptedChunkArray, signature),
- signature
- };
- }
- }
-
- function append(aesCrypto, input, output, paddingStart, paddingEnd, verifySignature) {
- const inputLength = input.length - paddingEnd;
- if (aesCrypto.pendingInput.length) {
- input = concat(aesCrypto.pendingInput, input);
- output = expand(output, inputLength - (inputLength % BLOCK_LENGTH));
- }
- let offset;
- for (offset = 0; offset <= inputLength - BLOCK_LENGTH; offset += BLOCK_LENGTH) {
- const inputChunk = codecBytes.toBits(subarray(input, offset, offset + BLOCK_LENGTH));
- if (verifySignature) {
- aesCrypto.hmac.update(inputChunk);
- }
- const outputChunk = aesCrypto.aesCtrGladman.update(inputChunk);
- if (!verifySignature) {
- aesCrypto.hmac.update(outputChunk);
- }
- output.set(codecBytes.fromBits(outputChunk), offset + paddingStart);
- }
- aesCrypto.pendingInput = subarray(input, offset);
- return output;
- }
-
- async function createDecryptionKeys(decrypt, preambleArray, password) {
- await createKeys$1(decrypt, password, subarray(preambleArray, 0, SALT_LENGTH[decrypt.strength]));
- const passwordVerification = subarray(preambleArray, SALT_LENGTH[decrypt.strength]);
- const passwordVerificationKey = decrypt.keys.passwordVerification;
- if (passwordVerificationKey[0] != passwordVerification[0] || passwordVerificationKey[1] != passwordVerification[1]) {
- throw new Error(ERR_INVALID_PASSWORD);
- }
- }
-
- async function createEncryptionKeys(encrypt, password) {
- const salt = crypto.getRandomValues(new Uint8Array(SALT_LENGTH[encrypt.strength]));
- await createKeys$1(encrypt, password, salt);
- return concat(salt, encrypt.keys.passwordVerification);
- }
-
- async function createKeys$1(target, password, salt) {
- const encodedPassword = encodeText(password);
- const basekey = await crypto.subtle.importKey(RAW_FORMAT, encodedPassword, BASE_KEY_ALGORITHM, false, DERIVED_BITS_USAGE);
- const derivedBits = await crypto.subtle.deriveBits(Object.assign({ salt }, DERIVED_BITS_ALGORITHM), basekey, 8 * ((KEY_LENGTH[target.strength] * 2) + 2));
- const compositeKey = new Uint8Array(derivedBits);
- target.keys = {
- key: codecBytes.toBits(subarray(compositeKey, 0, KEY_LENGTH[target.strength])),
- authentication: codecBytes.toBits(subarray(compositeKey, KEY_LENGTH[target.strength], KEY_LENGTH[target.strength] * 2)),
- passwordVerification: subarray(compositeKey, KEY_LENGTH[target.strength] * 2)
- };
- }
-
- function concat(leftArray, rightArray) {
- let array = leftArray;
- if (leftArray.length + rightArray.length) {
- array = new Uint8Array(leftArray.length + rightArray.length);
- array.set(leftArray, 0);
- array.set(rightArray, leftArray.length);
- }
- return array;
- }
-
- function expand(inputArray, length) {
- if (length && length > inputArray.length) {
- const array = inputArray;
- inputArray = new Uint8Array(length);
- inputArray.set(array, 0);
- }
- return inputArray;
- }
-
- function subarray(array, begin, end) {
- return array.subarray(begin, end);
- }
-
- /*
- Copyright (c) 2022 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.
- */
-
- const HEADER_LENGTH = 12;
-
- class ZipCryptoDecrypt {
-
- constructor(password, passwordVerification) {
- const zipCrypto = this;
- Object.assign(zipCrypto, {
- password,
- passwordVerification
- });
- createKeys(zipCrypto, password);
- }
-
- append(input) {
- const zipCrypto = this;
- if (zipCrypto.password) {
- const decryptedHeader = decrypt(zipCrypto, input.subarray(0, HEADER_LENGTH));
- zipCrypto.password = null;
- if (decryptedHeader[HEADER_LENGTH - 1] != zipCrypto.passwordVerification) {
- throw new Error(ERR_INVALID_PASSWORD);
- }
- input = input.subarray(HEADER_LENGTH);
- }
- return decrypt(zipCrypto, input);
- }
-
- flush() {
- return {
- valid: true,
- data: new Uint8Array(0)
- };
- }
- }
-
- class ZipCryptoEncrypt {
-
- constructor(password, passwordVerification) {
- const zipCrypto = this;
- Object.assign(zipCrypto, {
- password,
- passwordVerification
- });
- createKeys(zipCrypto, password);
- }
-
- append(input) {
- const zipCrypto = this;
- let output;
- let offset;
- if (zipCrypto.password) {
- zipCrypto.password = null;
- const header = crypto.getRandomValues(new Uint8Array(HEADER_LENGTH));
- header[HEADER_LENGTH - 1] = zipCrypto.passwordVerification;
- output = new Uint8Array(input.length + header.length);
- output.set(encrypt(zipCrypto, header), 0);
- offset = HEADER_LENGTH;
- } else {
- output = new Uint8Array(input.length);
- offset = 0;
- }
- output.set(encrypt(zipCrypto, input), offset);
- return output;
- }
-
- flush() {
- return {
- data: new Uint8Array(0)
- };
- }
- }
-
- function decrypt(target, input) {
- const output = new Uint8Array(input.length);
- for (let index = 0; index < input.length; index++) {
- output[index] = getByte(target) ^ input[index];
- updateKeys(target, output[index]);
- }
- return output;
- }
-
- function encrypt(target, input) {
- const output = new Uint8Array(input.length);
- for (let index = 0; index < input.length; index++) {
- output[index] = getByte(target) ^ input[index];
- updateKeys(target, input[index]);
- }
- return output;
- }
-
- function createKeys(target, password) {
- target.keys = [0x12345678, 0x23456789, 0x34567890];
- target.crcKey0 = new Crc32(target.keys[0]);
- target.crcKey2 = new Crc32(target.keys[2]);
- for (let index = 0; index < password.length; index++) {
- updateKeys(target, password.charCodeAt(index));
- }
- }
-
- function updateKeys(target, byte) {
- target.crcKey0.append([byte]);
- target.keys[0] = ~target.crcKey0.get();
- target.keys[1] = getInt32(target.keys[1] + getInt8(target.keys[0]));
- target.keys[1] = getInt32(Math.imul(target.keys[1], 134775813) + 1);
- target.crcKey2.append([target.keys[1] >>> 24]);
- target.keys[2] = ~target.crcKey2.get();
- }
-
- function getByte(target) {
- const temp = target.keys[2] | 2;
- return getInt8(Math.imul(temp, (temp ^ 1)) >>> 8);
- }
-
- function getInt8(number) {
- return number & 0xFF;
- }
-
- function getInt32(number) {
- return number & 0xFFFFFFFF;
- }
-
- /*
- Copyright (c) 2022 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.
- */
-
- const CODEC_DEFLATE = "deflate";
- const CODEC_INFLATE = "inflate";
- const ERR_INVALID_SIGNATURE = "Invalid signature";
-
- class Inflate {
-
- constructor(codecConstructor, {
- signature,
- password,
- signed,
- compressed,
- zipCrypto,
- passwordVerification,
- encryptionStrength
- }, { chunkSize }) {
- const encrypted = Boolean(password);
- Object.assign(this, {
- signature,
- encrypted,
- signed,
- compressed,
- inflate: compressed && new codecConstructor({ chunkSize }),
- crc32: signed && new Crc32(),
- zipCrypto,
- decrypt: encrypted && zipCrypto ?
- new ZipCryptoDecrypt(password, passwordVerification) :
- new AESDecrypt(password, signed, encryptionStrength)
- });
- }
-
- async append(data) {
- const codec = this;
- if (codec.encrypted && data.length) {
- data = await codec.decrypt.append(data);
- }
- if (codec.compressed && data.length) {
- data = await codec.inflate.append(data);
- }
- if ((!codec.encrypted || codec.zipCrypto) && codec.signed && data.length) {
- codec.crc32.append(data);
- }
- return data;
- }
-
- async flush() {
- const codec = this;
- let signature;
- let data = new Uint8Array(0);
- if (codec.encrypted) {
- const result = codec.decrypt.flush();
- if (!result.valid) {
- throw new Error(ERR_INVALID_SIGNATURE);
- }
- data = result.data;
- }
- if ((!codec.encrypted || codec.zipCrypto) && codec.signed) {
- const dataViewSignature = new DataView(new Uint8Array(4).buffer);
- signature = codec.crc32.get();
- dataViewSignature.setUint32(0, signature);
- if (codec.signature != dataViewSignature.getUint32(0, false)) {
- throw new Error(ERR_INVALID_SIGNATURE);
- }
- }
- if (codec.compressed) {
- data = (await codec.inflate.append(data)) || new Uint8Array(0);
- await codec.inflate.flush();
- }
- return { data, signature };
- }
- }
-
- class Deflate {
-
- constructor(codecConstructor, {
- encrypted,
- signed,
- compressed,
- level,
- zipCrypto,
- password,
- passwordVerification,
- encryptionStrength
- }, { chunkSize }) {
- Object.assign(this, {
- encrypted,
- signed,
- compressed,
- deflate: compressed && new codecConstructor({ level: level || 5, chunkSize }),
- crc32: signed && new Crc32(),
- zipCrypto,
- encrypt: encrypted && zipCrypto ?
- new ZipCryptoEncrypt(password, passwordVerification) :
- new AESEncrypt(password, encryptionStrength)
- });
- }
-
- async append(inputData) {
- const codec = this;
- let data = inputData;
- if (codec.compressed && inputData.length) {
- data = await codec.deflate.append(inputData);
- }
- if (codec.encrypted && data.length) {
- data = await codec.encrypt.append(data);
- }
- if ((!codec.encrypted || codec.zipCrypto) && codec.signed && inputData.length) {
- codec.crc32.append(inputData);
- }
- return data;
- }
-
- async flush() {
- const codec = this;
- let signature;
- let data = new Uint8Array(0);
- if (codec.compressed) {
- data = (await codec.deflate.flush()) || new Uint8Array(0);
- }
- if (codec.encrypted) {
- data = await codec.encrypt.append(data);
- const result = codec.encrypt.flush();
- signature = result.signature;
- const newData = new Uint8Array(data.length + result.data.length);
- newData.set(data, 0);
- newData.set(result.data, data.length);
- data = newData;
- }
- if ((!codec.encrypted || codec.zipCrypto) && codec.signed) {
- signature = codec.crc32.get();
- }
- return { data, signature };
- }
- }
-
- function createCodec$1(codecConstructor, options, config) {
- if (options.codecType.startsWith(CODEC_DEFLATE)) {
- return new Deflate(codecConstructor, options, config);
- } else if (options.codecType.startsWith(CODEC_INFLATE)) {
- return new Inflate(codecConstructor, options, config);
- }
- }
-
- /*
- Copyright (c) 2022 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.
- */
-
- const MESSAGE_INIT = "init";
- const MESSAGE_APPEND = "append";
- const MESSAGE_FLUSH = "flush";
- const MESSAGE_EVENT_TYPE = "message";
-
- let classicWorkersSupported = true;
-
- var getWorker = (workerData, codecConstructor, options, config, onTaskFinished, webWorker, scripts) => {
- Object.assign(workerData, {
- busy: true,
- codecConstructor,
- options: Object.assign({}, options),
- scripts,
- terminate() {
- if (workerData.worker && !workerData.busy) {
- workerData.worker.terminate();
- workerData.interface = null;
- }
- },
- onTaskFinished() {
- workerData.busy = false;
- onTaskFinished(workerData);
- }
- });
- return webWorker ? createWebWorkerInterface(workerData, config) : createWorkerInterface(workerData, config);
- };
-
- function createWorkerInterface(workerData, config) {
- const interfaceCodec = createCodec$1(workerData.codecConstructor, workerData.options, config);
- return {
- async append(data) {
- try {
- return await interfaceCodec.append(data);
- } catch (error) {
- workerData.onTaskFinished();
- throw error;
- }
- },
- async flush() {
- try {
- return await interfaceCodec.flush();
- } finally {
- workerData.onTaskFinished();
- }
- },
- abort() {
- workerData.onTaskFinished();
- }
- };
- }
-
- function createWebWorkerInterface(workerData, config) {
- let messageTask;
- const workerOptions = { type: "module" };
- if (!workerData.interface) {
- if (!classicWorkersSupported) {
- workerData.worker = getWorker(workerOptions, config.baseURL);
- } else {
- try {
- workerData.worker = getWorker({}, config.baseURL);
- } catch (error) {
- classicWorkersSupported = false;
- workerData.worker = getWorker(workerOptions, config.baseURL);
- }
- }
- workerData.worker.addEventListener(MESSAGE_EVENT_TYPE, onMessage, false);
- workerData.interface = {
- append(data) {
- return initAndSendMessage({ type: MESSAGE_APPEND, data });
- },
- flush() {
- return initAndSendMessage({ type: MESSAGE_FLUSH });
- },
- abort() {
- workerData.onTaskFinished();
- }
- };
- }
- return workerData.interface;
-
- function getWorker(options, baseURL) {
- let url, scriptUrl;
- url = workerData.scripts[0];
- if (typeof url == "function") {
- url = url();
- }
- try {
- scriptUrl = new URL(url, baseURL);
- } catch (error) {
- scriptUrl = url;
- }
- return new Worker(scriptUrl, options);
- }
-
- async function initAndSendMessage(message) {
- if (!messageTask) {
- const options = workerData.options;
- const scripts = workerData.scripts.slice(1);
- await sendMessage({ scripts, type: MESSAGE_INIT, options, config: { chunkSize: config.chunkSize } });
- }
- return sendMessage(message);
- }
-
- function sendMessage(message) {
- const worker = workerData.worker;
- const result = new Promise((resolve, reject) => messageTask = { resolve, reject });
- try {
- if (message.data) {
- try {
- message.data = message.data.buffer;
- worker.postMessage(message, [message.data]);
- } catch (error) {
- worker.postMessage(message);
- }
- } else {
- worker.postMessage(message);
- }
- } catch (error) {
- messageTask.reject(error);
- messageTask = null;
- workerData.onTaskFinished();
- }
- return result;
- }
-
- function onMessage(event) {
- const message = event.data;
- if (messageTask) {
- const reponseError = message.error;
- const type = message.type;
- if (reponseError) {
- const error = new Error(reponseError.message);
- error.stack = reponseError.stack;
- messageTask.reject(error);
- messageTask = null;
- workerData.onTaskFinished();
- } else if (type == MESSAGE_INIT || type == MESSAGE_FLUSH || type == MESSAGE_APPEND) {
- const data = message.data;
- if (type == MESSAGE_FLUSH) {
- messageTask.resolve({ data: new Uint8Array(data), signature: message.signature });
- messageTask = null;
- workerData.onTaskFinished();
- } else {
- messageTask.resolve(data && new Uint8Array(data));
- }
- }
- }
- }
- }
-
- /*
- Copyright (c) 2022 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.
- */
-
- let pool = [];
- let pendingRequests = [];
-
- function createCodec(codecConstructor, options, config) {
- const streamCopy = !options.compressed && !options.signed && !options.encrypted;
- const webWorker = !streamCopy && (options.useWebWorkers || (options.useWebWorkers === undefined && config.useWebWorkers));
- const scripts = webWorker && config.workerScripts ? config.workerScripts[options.codecType] : [];
- if (pool.length < config.maxWorkers) {
- const workerData = {};
- pool.push(workerData);
- return getWorker(workerData, codecConstructor, options, config, onTaskFinished, webWorker, scripts);
- } else {
- const workerData = pool.find(workerData => !workerData.busy);
- if (workerData) {
- clearTerminateTimeout(workerData);
- return getWorker(workerData, codecConstructor, options, config, onTaskFinished, webWorker, scripts);
- } else {
- return new Promise(resolve => pendingRequests.push({ resolve, codecConstructor, options, webWorker, scripts }));
- }
- }
-
- function onTaskFinished(workerData) {
- if (pendingRequests.length) {
- const [{ resolve, codecConstructor, options, webWorker, scripts }] = pendingRequests.splice(0, 1);
- resolve(getWorker(workerData, codecConstructor, options, config, onTaskFinished, webWorker, scripts));
- } else if (workerData.worker) {
- clearTerminateTimeout(workerData);
- if (Number.isFinite(config.terminateWorkerTimeout) && config.terminateWorkerTimeout >= 0) {
- workerData.terminateTimeout = setTimeout(() => {
- pool = pool.filter(data => data != workerData);
- workerData.terminate();
- }, config.terminateWorkerTimeout);
- }
- } else {
- pool = pool.filter(data => data != workerData);
- }
- }
- }
-
- function clearTerminateTimeout(workerData) {
- if (workerData.terminateTimeout) {
- clearTimeout(workerData.terminateTimeout);
- workerData.terminateTimeout = null;
- }
- }
-
- function terminateWorkers() {
- pool.forEach(workerData => {
- clearTerminateTimeout(workerData);
- workerData.terminate();
- });
- }
-
- /*
- Copyright (c) 2022 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.
- */
-
- const MINIMUM_CHUNK_SIZE = 64;
- const ERR_ABORT = "Abort error";
-
- async function processData(codec, reader, writer, offset, inputLength, config, options) {
- const chunkSize = Math.max(config.chunkSize, MINIMUM_CHUNK_SIZE);
- return processChunk();
-
- async function processChunk(chunkOffset = 0, outputLength = 0) {
- const signal = options.signal;
- if (chunkOffset < inputLength) {
- testAborted(signal, codec);
- const inputData = await reader.readUint8Array(chunkOffset + offset, Math.min(chunkSize, inputLength - chunkOffset));
- const chunkLength = inputData.length;
- testAborted(signal, codec);
- const data = await codec.append(inputData);
- testAborted(signal, codec);
- outputLength += await writeData(writer, data);
- if (options.onprogress) {
- try {
- options.onprogress(chunkOffset + chunkLength, inputLength);
- } catch (error) {
- // ignored
- }
- }
- return processChunk(chunkOffset + chunkSize, outputLength);
- } else {
- const result = await codec.flush();
- outputLength += await writeData(writer, result.data);
- return { signature: result.signature, length: outputLength };
- }
- }
- }
-
- function testAborted(signal, codec) {
- if (signal && signal.aborted) {
- codec.abort();
- throw new Error(ERR_ABORT);
- }
- }
-
- async function writeData(writer, data) {
- if (data.length) {
- await writer.writeUint8Array(data);
- }
- return data.length;
- }
-
- /*
- Copyright (c) 2022 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.
- */
-
- /* global Blob, FileReader, atob, btoa, XMLHttpRequest, document, fetch */
-
- const ERR_HTTP_STATUS = "HTTP error ";
- const ERR_HTTP_RANGE = "HTTP Range not supported";
-
- const CONTENT_TYPE_TEXT_PLAIN = "text/plain";
- const HTTP_HEADER_CONTENT_LENGTH = "Content-Length";
- const HTTP_HEADER_CONTENT_RANGE = "Content-Range";
- const HTTP_HEADER_ACCEPT_RANGES = "Accept-Ranges";
- const HTTP_HEADER_RANGE = "Range";
- const HTTP_METHOD_HEAD = "HEAD";
- const HTTP_METHOD_GET = "GET";
- const HTTP_RANGE_UNIT = "bytes";
-
- class Stream {
-
- constructor() {
- this.size = 0;
- }
-
- init() {
- this.initialized = true;
- }
- }
-
- class Reader extends Stream {
- }
-
- class Writer extends Stream {
-
- writeUint8Array(array) {
- this.size += array.length;
- }
- }
-
- class TextReader extends Reader {
-
- constructor(text) {
- super();
- this.blobReader = new BlobReader(new Blob([text], { type: CONTENT_TYPE_TEXT_PLAIN }));
- }
-
- async init() {
- super.init();
- this.blobReader.init();
- this.size = this.blobReader.size;
- }
-
- async readUint8Array(offset, length) {
- return this.blobReader.readUint8Array(offset, length);
- }
- }
-
- class TextWriter extends Writer {
-
- constructor(encoding) {
- super();
- this.encoding = encoding;
- this.blob = new Blob([], { type: CONTENT_TYPE_TEXT_PLAIN });
- }
-
- async writeUint8Array(array) {
- super.writeUint8Array(array);
- this.blob = new Blob([this.blob, array.buffer], { type: CONTENT_TYPE_TEXT_PLAIN });
- }
-
- getData() {
- if (this.blob.text) {
- return this.blob.text();
- } else {
- const reader = new FileReader();
- return new Promise((resolve, reject) => {
- reader.onload = event => resolve(event.target.result);
- reader.onerror = () => reject(reader.error);
- reader.readAsText(this.blob, this.encoding);
- });
- }
- }
- }
-
- class Data64URIReader extends Reader {
-
- constructor(dataURI) {
- super();
- this.dataURI = dataURI;
- let dataEnd = dataURI.length;
- while (dataURI.charAt(dataEnd - 1) == "=") {
- dataEnd--;
- }
- this.dataStart = dataURI.indexOf(",") + 1;
- this.size = Math.floor((dataEnd - this.dataStart) * 0.75);
- }
-
- async readUint8Array(offset, length) {
- const dataArray = new Uint8Array(length);
- const start = Math.floor(offset / 3) * 4;
- const bytes = atob(this.dataURI.substring(start + this.dataStart, Math.ceil((offset + length) / 3) * 4 + this.dataStart));
- const delta = offset - Math.floor(start / 4) * 3;
- for (let indexByte = delta; indexByte < delta + length; indexByte++) {
- dataArray[indexByte - delta] = bytes.charCodeAt(indexByte);
- }
- return dataArray;
- }
- }
-
- class Data64URIWriter extends Writer {
-
- constructor(contentType) {
- super();
- this.data = "data:" + (contentType || "") + ";base64,";
- this.pending = [];
- }
-
- async writeUint8Array(array) {
- super.writeUint8Array(array);
- let indexArray = 0;
- let dataString = this.pending;
- const delta = this.pending.length;
- this.pending = "";
- for (indexArray = 0; indexArray < (Math.floor((delta + array.length) / 3) * 3) - delta; indexArray++) {
- dataString += String.fromCharCode(array[indexArray]);
- }
- for (; indexArray < array.length; indexArray++) {
- this.pending += String.fromCharCode(array[indexArray]);
- }
- if (dataString.length > 2) {
- this.data += btoa(dataString);
- } else {
- this.pending = dataString;
- }
- }
-
- getData() {
- return this.data + btoa(this.pending);
- }
- }
-
- class BlobReader extends Reader {
-
- constructor(blob) {
- super();
- this.blob = blob;
- this.size = blob.size;
- }
-
- async readUint8Array(offset, length) {
- if (this.blob.arrayBuffer) {
- return new Uint8Array(await this.blob.slice(offset, offset + length).arrayBuffer());
- } else {
- const reader = new FileReader();
- return new Promise((resolve, reject) => {
- reader.onload = event => resolve(new Uint8Array(event.target.result));
- reader.onerror = () => reject(reader.error);
- reader.readAsArrayBuffer(this.blob.slice(offset, offset + length));
- });
- }
- }
- }
-
- class BlobWriter extends Writer {
-
- constructor(contentType) {
- super();
- this.contentType = contentType;
- this.arrayBuffers = [];
- }
-
- async writeUint8Array(array) {
- super.writeUint8Array(array);
- this.arrayBuffers.push(array.buffer);
- }
-
- getData() {
- if (!this.blob) {
- this.blob = new Blob(this.arrayBuffers, { type: this.contentType });
- }
- return this.blob;
- }
- }
-
- class WritableStreamWriter extends Writer {
- constructor(writableStream) {
- super();
- this.writableStream = writableStream;
- this.writer = writableStream.getWriter();
- }
-
- async writeUint8Array(array) {
- await this.writer.ready;
- return this.writer.write(array);
- }
-
- async getData() {
- await this.writer.ready;
- await this.writer.close();
- return this.writableStream;
- }
- }
-
- class FetchReader extends Reader {
-
- constructor(url, options) {
- super();
- this.url = url;
- this.preventHeadRequest = options.preventHeadRequest;
- this.useRangeHeader = options.useRangeHeader;
- this.forceRangeRequests = options.forceRangeRequests;
- this.options = Object.assign({}, options);
- delete this.options.preventHeadRequest;
- delete this.options.useRangeHeader;
- delete this.options.forceRangeRequests;
- delete this.options.useXHR;
- }
-
- async init() {
- super.init();
- await initHttpReader(this, sendFetchRequest, getFetchRequestData);
- }
-
- async readUint8Array(index, length) {
- return readUint8ArrayHttpReader(this, index, length, sendFetchRequest, getFetchRequestData);
- }
- }
-
- class XHRReader extends Reader {
-
- constructor(url, options) {
- super();
- this.url = url;
- this.preventHeadRequest = options.preventHeadRequest;
- this.useRangeHeader = options.useRangeHeader;
- this.forceRangeRequests = options.forceRangeRequests;
- this.options = options;
- }
-
- async init() {
- super.init();
- await initHttpReader(this, sendXMLHttpRequest, getXMLHttpRequestData);
- }
-
- async readUint8Array(index, length) {
- return readUint8ArrayHttpReader(this, index, length, sendXMLHttpRequest, getXMLHttpRequestData);
- }
- }
-
- async function initHttpReader(httpReader, sendRequest, getRequestData) {
- if (isHttpFamily(httpReader.url) && (httpReader.useRangeHeader || httpReader.forceRangeRequests)) {
- const response = await sendRequest(HTTP_METHOD_GET, httpReader, getRangeHeaders(httpReader));
- if (!httpReader.forceRangeRequests && response.headers.get(HTTP_HEADER_ACCEPT_RANGES) != HTTP_RANGE_UNIT) {
- throw new Error(ERR_HTTP_RANGE);
- } else {
- let contentSize;
- const contentRangeHeader = response.headers.get(HTTP_HEADER_CONTENT_RANGE);
- if (contentRangeHeader) {
- const splitHeader = contentRangeHeader.trim().split(/\s*\/\s*/);
- if (splitHeader.length) {
- const headerValue = splitHeader[1];
- if (headerValue && headerValue != "*") {
- contentSize = Number(headerValue);
- }
- }
- }
- if (contentSize === undefined) {
- await getContentLength(httpReader, sendRequest, getRequestData);
- } else {
- httpReader.size = contentSize;
- }
- }
- } else {
- await getContentLength(httpReader, sendRequest, getRequestData);
- }
- }
-
- async function readUint8ArrayHttpReader(httpReader, index, length, sendRequest, getRequestData) {
- if (httpReader.useRangeHeader || httpReader.forceRangeRequests) {
- const response = await sendRequest(HTTP_METHOD_GET, httpReader, getRangeHeaders(httpReader, index, length));
- if (response.status != 206) {
- throw new Error(ERR_HTTP_RANGE);
- }
- return new Uint8Array(await response.arrayBuffer());
- } else {
- if (!httpReader.data) {
- await getRequestData(httpReader, httpReader.options);
- }
- return new Uint8Array(httpReader.data.subarray(index, index + length));
- }
- }
-
- function getRangeHeaders(httpReader, index = 0, length = 1) {
- return Object.assign({}, getHeaders(httpReader), { [HTTP_HEADER_RANGE]: HTTP_RANGE_UNIT + "=" + index + "-" + (index + length - 1) });
- }
-
- function getHeaders(httpReader) {
- let headers = httpReader.options.headers;
- if (headers) {
- if (Symbol.iterator in headers) {
- return Object.fromEntries(headers);
- } else {
- return headers;
- }
- }
- }
-
- async function getFetchRequestData(httpReader) {
- await getRequestData(httpReader, sendFetchRequest);
- }
-
- async function getXMLHttpRequestData(httpReader) {
- await getRequestData(httpReader, sendXMLHttpRequest);
- }
-
- async function getRequestData(httpReader, sendRequest) {
- const response = await sendRequest(HTTP_METHOD_GET, httpReader, getHeaders(httpReader));
- httpReader.data = new Uint8Array(await response.arrayBuffer());
- if (!httpReader.size) {
- httpReader.size = httpReader.data.length;
- }
- }
-
- async function getContentLength(httpReader, sendRequest, getRequestData) {
- if (httpReader.preventHeadRequest) {
- await getRequestData(httpReader, httpReader.options);
- } else {
- const response = await sendRequest(HTTP_METHOD_HEAD, httpReader, getHeaders(httpReader));
- const contentLength = response.headers.get(HTTP_HEADER_CONTENT_LENGTH);
- if (contentLength) {
- httpReader.size = Number(contentLength);
- } else {
- await getRequestData(httpReader, httpReader.options);
- }
- }
- }
-
- async function sendFetchRequest(method, { options, url }, headers) {
- const response = await fetch(url, Object.assign({}, options, { method, headers }));
- if (response.status < 400) {
- return response;
- } else {
- throw new Error(ERR_HTTP_STATUS + (response.statusText || response.status));
- }
- }
-
- function sendXMLHttpRequest(method, { url }, headers) {
- return new Promise((resolve, reject) => {
- const request = new XMLHttpRequest();
- request.addEventListener("load", () => {
- if (request.status < 400) {
- const headers = [];
- request.getAllResponseHeaders().trim().split(/[\r\n]+/).forEach(header => {
- const splitHeader = header.trim().split(/\s*:\s*/);
- splitHeader[0] = splitHeader[0].trim().replace(/^[a-z]|-[a-z]/g, value => value.toUpperCase());
- headers.push(splitHeader);
- });
- resolve({
- status: request.status,
- arrayBuffer: () => request.response,
- headers: new Map(headers)
- });
- } else {
- reject(new Error(ERR_HTTP_STATUS + (request.statusText || request.status)));
- }
- }, false);
- request.addEventListener("error", event => reject(event.detail.error), false);
- request.open(method, url);
- if (headers) {
- for (const entry of Object.entries(headers)) {
- request.setRequestHeader(entry[0], entry[1]);
- }
- }
- request.responseType = "arraybuffer";
- request.send();
- });
- }
-
- class HttpReader extends Reader {
-
- constructor(url, options = {}) {
- super();
- this.url = url;
- if (options.useXHR) {
- this.reader = new XHRReader(url, options);
- } else {
- this.reader = new FetchReader(url, options);
- }
- }
-
- set size(value) {
- // ignored
- }
-
- get size() {
- return this.reader.size;
- }
-
- async init() {
- super.init();
- await this.reader.init();
- }
-
- async readUint8Array(index, length) {
- return this.reader.readUint8Array(index, length);
- }
- }
-
- class HttpRangeReader extends HttpReader {
-
- constructor(url, options = {}) {
- options.useRangeHeader = true;
- super(url, options);
- }
- }
-
-
- class Uint8ArrayReader extends Reader {
-
- constructor(array) {
- super();
- this.array = array;
- this.size = array.length;
- }
-
- async readUint8Array(index, length) {
- return this.array.slice(index, index + length);
- }
- }
-
- class Uint8ArrayWriter extends Writer {
-
- constructor() {
- super();
- this.array = new Uint8Array(0);
- }
-
- async writeUint8Array(array) {
- super.writeUint8Array(array);
- const previousArray = this.array;
- this.array = new Uint8Array(previousArray.length + array.length);
- this.array.set(previousArray);
- this.array.set(array, previousArray.length);
- }
-
- getData() {
- return this.array;
- }
- }
-
- function isHttpFamily(url) {
- if (typeof document != "undefined") {
- const anchor = document.createElement("a");
- anchor.href = url;
- return anchor.protocol == "http:" || anchor.protocol == "https:";
- } else {
- return /^https?:\/\//i.test(url);
- }
- }
-
- /*
- Copyright (c) 2022 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.
- */
-
- const MAX_32_BITS = 0xffffffff;
- const MAX_16_BITS = 0xffff;
- const COMPRESSION_METHOD_DEFLATE = 0x08;
- const COMPRESSION_METHOD_STORE = 0x00;
- const COMPRESSION_METHOD_AES = 0x63;
-
- const LOCAL_FILE_HEADER_SIGNATURE = 0x04034b50;
- const DATA_DESCRIPTOR_RECORD_SIGNATURE = 0x08074b50;
- const CENTRAL_FILE_HEADER_SIGNATURE = 0x02014b50;
- const END_OF_CENTRAL_DIR_SIGNATURE = 0x06054b50;
- const ZIP64_END_OF_CENTRAL_DIR_SIGNATURE = 0x06064b50;
- const ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIGNATURE = 0x07064b50;
- const END_OF_CENTRAL_DIR_LENGTH = 22;
- const ZIP64_END_OF_CENTRAL_DIR_LOCATOR_LENGTH = 20;
- const ZIP64_END_OF_CENTRAL_DIR_LENGTH = 56;
- const ZIP64_END_OF_CENTRAL_DIR_TOTAL_LENGTH = END_OF_CENTRAL_DIR_LENGTH + ZIP64_END_OF_CENTRAL_DIR_LOCATOR_LENGTH + ZIP64_END_OF_CENTRAL_DIR_LENGTH;
-
- const ZIP64_TOTAL_NUMBER_OF_DISKS = 1;
-
- const EXTRAFIELD_TYPE_ZIP64 = 0x0001;
- const EXTRAFIELD_TYPE_AES = 0x9901;
- const EXTRAFIELD_TYPE_NTFS = 0x000a;
- const EXTRAFIELD_TYPE_NTFS_TAG1 = 0x0001;
- const EXTRAFIELD_TYPE_EXTENDED_TIMESTAMP = 0x5455;
- const EXTRAFIELD_TYPE_UNICODE_PATH = 0x7075;
- const EXTRAFIELD_TYPE_UNICODE_COMMENT = 0x6375;
-
- const BITFLAG_ENCRYPTED = 0x01;
- const BITFLAG_LEVEL = 0x06;
- const BITFLAG_DATA_DESCRIPTOR = 0x0008;
- const BITFLAG_LANG_ENCODING_FLAG = 0x0800;
- const FILE_ATTR_MSDOS_DIR_MASK = 0x10;
-
- const VERSION_DEFLATE = 0x14;
- const VERSION_ZIP64 = 0x2D;
- const VERSION_AES = 0x33;
-
- const DIRECTORY_SIGNATURE = "/";
-
- const MAX_DATE = new Date(2107, 11, 31);
- const MIN_DATE = new Date(1980, 0, 1);
-
- /*
- Copyright (c) 2022 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.
- */
-
- const CP437 = "\0☺☻♥♦♣♠•◘○◙♂♀♪♫☼►◄↕‼¶§▬↨↑↓→←∟↔▲▼ !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~⌂ÇüéâäàåçêëèïîìÄÅÉæÆôöòûùÿÖÜ¢£¥₧ƒáíóúñѪº¿⌐¬½¼¡«»░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀αßΓπΣσµτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■ ".split("");
-
- var decodeCP437 = stringValue => {
- let result = "";
- for (let indexCharacter = 0; indexCharacter < stringValue.length; indexCharacter++) {
- result += CP437[stringValue[indexCharacter]];
- }
- return result;
- };
-
- /*
- Copyright (c) 2022 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.
- */
-
- async function decodeText(value, encoding) {
- if (encoding && encoding.trim().toLowerCase() == "cp437") {
- return decodeCP437(value);
- } else if (typeof TextDecoder == "undefined") {
- const fileReader = new FileReader();
- return new Promise((resolve, reject) => {
- fileReader.onload = event => resolve(event.target.result);
- fileReader.onerror = () => reject(fileReader.error);
- fileReader.readAsText(new Blob([value]));
- });
- } else {
- return new TextDecoder(encoding).decode(value);
- }
- }
-
- /*
- Copyright (c) 2022 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.
- */
-
- const PROPERTY_NAMES = [
- "filename", "rawFilename", "directory", "encrypted", "compressedSize", "uncompressedSize",
- "lastModDate", "rawLastModDate", "comment", "rawComment", "signature", "extraField",
- "rawExtraField", "bitFlag", "extraFieldZip64", "extraFieldUnicodePath", "extraFieldUnicodeComment",
- "extraFieldAES", "filenameUTF8", "commentUTF8", "offset", "zip64", "compressionMethod",
- "extraFieldNTFS", "lastAccessDate", "creationDate", "extraFieldExtendedTimestamp",
- "version", "versionMadeBy", "msDosCompatible", "internalFileAttribute", "externalFileAttribute"];
-
- class Entry {
-
- constructor(data) {
- PROPERTY_NAMES.forEach(name => this[name] = data[name]);
- }
-
- }
-
- /*
- Copyright (c) 2022 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.
- */
-
- const ERR_BAD_FORMAT = "File format is not recognized";
- const ERR_EOCDR_NOT_FOUND = "End of central directory not found";
- const ERR_EOCDR_ZIP64_NOT_FOUND = "End of Zip64 central directory not found";
- const ERR_EOCDR_LOCATOR_ZIP64_NOT_FOUND = "End of Zip64 central directory locator not found";
- const ERR_CENTRAL_DIRECTORY_NOT_FOUND = "Central directory header not found";
- const ERR_LOCAL_FILE_HEADER_NOT_FOUND = "Local file header not found";
- const ERR_EXTRAFIELD_ZIP64_NOT_FOUND = "Zip64 extra field not found";
- const ERR_ENCRYPTED = "File contains encrypted entry";
- const ERR_UNSUPPORTED_ENCRYPTION = "Encryption method not supported";
- const ERR_UNSUPPORTED_COMPRESSION = "Compression method not supported";
- const CHARSET_UTF8 = "utf-8";
- const CHARSET_CP437 = "cp437";
- const ZIP64_PROPERTIES = ["uncompressedSize", "compressedSize", "offset"];
-
- class ZipReader {
-
- constructor(reader, options = {}) {
- Object.assign(this, {
- reader,
- options,
- config: getConfiguration()
- });
- }
-
- async getEntries(options = {}) {
- const zipReader = this;
- const reader = zipReader.reader;
- if (!reader.initialized) {
- await reader.init();
- }
- if (reader.size < END_OF_CENTRAL_DIR_LENGTH) {
- throw new Error(ERR_BAD_FORMAT);
- }
- const endOfDirectoryInfo = await seekSignature(reader, END_OF_CENTRAL_DIR_SIGNATURE, reader.size, END_OF_CENTRAL_DIR_LENGTH, MAX_16_BITS * 16);
- if (!endOfDirectoryInfo) {
- throw new Error(ERR_EOCDR_NOT_FOUND);
- }
- const endOfDirectoryView = getDataView$1(endOfDirectoryInfo);
- let directoryDataLength = getUint32(endOfDirectoryView, 12);
- let directoryDataOffset = getUint32(endOfDirectoryView, 16);
- let filesLength = getUint16(endOfDirectoryView, 8);
- let prependedDataLength = 0;
- if (directoryDataOffset == MAX_32_BITS || directoryDataLength == MAX_32_BITS || filesLength == MAX_16_BITS) {
- const endOfDirectoryLocatorArray = await readUint8Array(reader, endOfDirectoryInfo.offset - ZIP64_END_OF_CENTRAL_DIR_LOCATOR_LENGTH, ZIP64_END_OF_CENTRAL_DIR_LOCATOR_LENGTH);
- const endOfDirectoryLocatorView = getDataView$1(endOfDirectoryLocatorArray);
- if (getUint32(endOfDirectoryLocatorView, 0) != ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIGNATURE) {
- throw new Error(ERR_EOCDR_ZIP64_NOT_FOUND);
- }
- directoryDataOffset = getBigUint64(endOfDirectoryLocatorView, 8);
- let endOfDirectoryArray = await readUint8Array(reader, directoryDataOffset, ZIP64_END_OF_CENTRAL_DIR_LENGTH);
- let endOfDirectoryView = getDataView$1(endOfDirectoryArray);
- const expectedDirectoryDataOffset = endOfDirectoryInfo.offset - ZIP64_END_OF_CENTRAL_DIR_LOCATOR_LENGTH - ZIP64_END_OF_CENTRAL_DIR_LENGTH;
- if (getUint32(endOfDirectoryView, 0) != ZIP64_END_OF_CENTRAL_DIR_SIGNATURE && directoryDataOffset != expectedDirectoryDataOffset) {
- const originalDirectoryDataOffset = directoryDataOffset;
- directoryDataOffset = expectedDirectoryDataOffset;
- prependedDataLength = directoryDataOffset - originalDirectoryDataOffset;
- endOfDirectoryArray = await readUint8Array(reader, directoryDataOffset, ZIP64_END_OF_CENTRAL_DIR_LENGTH);
- endOfDirectoryView = getDataView$1(endOfDirectoryArray);
- }
- if (getUint32(endOfDirectoryView, 0) != ZIP64_END_OF_CENTRAL_DIR_SIGNATURE) {
- throw new Error(ERR_EOCDR_LOCATOR_ZIP64_NOT_FOUND);
- }
- filesLength = getBigUint64(endOfDirectoryView, 32);
- directoryDataLength = getBigUint64(endOfDirectoryView, 40);
- directoryDataOffset -= directoryDataLength;
- }
- if (directoryDataOffset < 0 || directoryDataOffset >= reader.size) {
- throw new Error(ERR_BAD_FORMAT);
- }
- let offset = 0;
- let directoryArray = await readUint8Array(reader, directoryDataOffset, directoryDataLength);
- let directoryView = getDataView$1(directoryArray);
- if (directoryDataLength) {
- const expectedDirectoryDataOffset = endOfDirectoryInfo.offset - directoryDataLength;
- if (getUint32(directoryView, offset) != CENTRAL_FILE_HEADER_SIGNATURE && directoryDataOffset != expectedDirectoryDataOffset) {
- const originalDirectoryDataOffset = directoryDataOffset;
- directoryDataOffset = expectedDirectoryDataOffset;
- prependedDataLength = directoryDataOffset - originalDirectoryDataOffset;
- directoryArray = await readUint8Array(reader, directoryDataOffset, directoryDataLength);
- directoryView = getDataView$1(directoryArray);
- }
- }
- if (directoryDataOffset < 0 || directoryDataOffset >= reader.size) {
- throw new Error(ERR_BAD_FORMAT);
- }
- const entries = [];
- for (let indexFile = 0; indexFile < filesLength; indexFile++) {
- const fileEntry = new ZipEntry(reader, zipReader.config, zipReader.options);
- if (getUint32(directoryView, offset) != CENTRAL_FILE_HEADER_SIGNATURE) {
- throw new Error(ERR_CENTRAL_DIRECTORY_NOT_FOUND);
- }
- readCommonHeader(fileEntry, directoryView, offset + 6);
- const languageEncodingFlag = Boolean(fileEntry.bitFlag.languageEncodingFlag);
- const filenameOffset = offset + 46;
- const extraFieldOffset = filenameOffset + fileEntry.filenameLength;
- const commentOffset = extraFieldOffset + fileEntry.extraFieldLength;
- const versionMadeBy = getUint16(directoryView, offset + 4);
- const msDosCompatible = (versionMadeBy & 0) == 0;
- Object.assign(fileEntry, {
- versionMadeBy,
- msDosCompatible,
- compressedSize: 0,
- uncompressedSize: 0,
- commentLength: getUint16(directoryView, offset + 32),
- directory: msDosCompatible && ((getUint8(directoryView, offset + 38) & FILE_ATTR_MSDOS_DIR_MASK) == FILE_ATTR_MSDOS_DIR_MASK),
- offset: getUint32(directoryView, offset + 42) + prependedDataLength,
- internalFileAttribute: getUint32(directoryView, offset + 34),
- externalFileAttribute: getUint32(directoryView, offset + 38),
- rawFilename: directoryArray.subarray(filenameOffset, extraFieldOffset),
- filenameUTF8: languageEncodingFlag,
- commentUTF8: languageEncodingFlag,
- rawExtraField: directoryArray.subarray(extraFieldOffset, commentOffset)
- });
- const endOffset = commentOffset + fileEntry.commentLength;
- fileEntry.rawComment = directoryArray.subarray(commentOffset, endOffset);
- const filenameEncoding = getOptionValue$1(zipReader, options, "filenameEncoding");
- const commentEncoding = getOptionValue$1(zipReader, options, "commentEncoding");
- const [filename, comment] = await Promise.all([
- decodeText(fileEntry.rawFilename, fileEntry.filenameUTF8 ? CHARSET_UTF8 : filenameEncoding || CHARSET_CP437),
- decodeText(fileEntry.rawComment, fileEntry.commentUTF8 ? CHARSET_UTF8 : commentEncoding || CHARSET_CP437)
- ]);
- fileEntry.filename = filename;
- fileEntry.comment = comment;
- if (!fileEntry.directory && fileEntry.filename.endsWith(DIRECTORY_SIGNATURE)) {
- fileEntry.directory = true;
- }
- await readCommonFooter(fileEntry, fileEntry, directoryView, offset + 6);
- const entry = new Entry(fileEntry);
- entry.getData = (writer, options) => fileEntry.getData(writer, entry, options);
- entries.push(entry);
- offset = endOffset;
- if (options.onprogress) {
- try {
- options.onprogress(indexFile + 1, filesLength, new Entry(fileEntry));
- } catch (error) {
- // ignored
- }
- }
- }
- return entries;
- }
-
- async close() {
- }
- }
-
- class ZipEntry {
-
- constructor(reader, config, options) {
- Object.assign(this, {
- reader,
- config,
- options
- });
- }
-
- async getData(writer, fileEntry, options = {}) {
- const zipEntry = this;
- const {
- reader,
- offset,
- extraFieldAES,
- compressionMethod,
- config,
- bitFlag,
- signature,
- rawLastModDate,
- compressedSize
- } = zipEntry;
- const localDirectory = zipEntry.localDirectory = {};
- if (!reader.initialized) {
- await reader.init();
- }
- let dataArray = await readUint8Array(reader, offset, 30);
- const dataView = getDataView$1(dataArray);
- let password = getOptionValue$1(zipEntry, options, "password");
- password = password && password.length && password;
- if (extraFieldAES) {
- if (extraFieldAES.originalCompressionMethod != COMPRESSION_METHOD_AES) {
- throw new Error(ERR_UNSUPPORTED_COMPRESSION);
- }
- }
- if (compressionMethod != COMPRESSION_METHOD_STORE && compressionMethod != COMPRESSION_METHOD_DEFLATE) {
- throw new Error(ERR_UNSUPPORTED_COMPRESSION);
- }
- if (getUint32(dataView, 0) != LOCAL_FILE_HEADER_SIGNATURE) {
- throw new Error(ERR_LOCAL_FILE_HEADER_NOT_FOUND);
- }
- readCommonHeader(localDirectory, dataView, 4);
- dataArray = await readUint8Array(reader, offset, 30 + localDirectory.filenameLength + localDirectory.extraFieldLength);
- localDirectory.rawExtraField = dataArray.subarray(30 + localDirectory.filenameLength);
- await readCommonFooter(zipEntry, localDirectory, dataView, 4);
- fileEntry.lastAccessDate = localDirectory.lastAccessDate;
- fileEntry.creationDate = localDirectory.creationDate;
- const encrypted = zipEntry.encrypted && localDirectory.encrypted;
- const zipCrypto = encrypted && !extraFieldAES;
- if (encrypted) {
- if (!zipCrypto && extraFieldAES.strength === undefined) {
- throw new Error(ERR_UNSUPPORTED_ENCRYPTION);
- } else if (!password) {
- throw new Error(ERR_ENCRYPTED);
- }
- }
- const codec = await createCodec(config.Inflate, {
- codecType: CODEC_INFLATE,
- password,
- zipCrypto,
- encryptionStrength: extraFieldAES && extraFieldAES.strength,
- signed: getOptionValue$1(zipEntry, options, "checkSignature"),
- passwordVerification: zipCrypto && (bitFlag.dataDescriptor ? ((rawLastModDate >>> 8) & 0xFF) : ((signature >>> 24) & 0xFF)),
- signature,
- compressed: compressionMethod != 0,
- encrypted,
- useWebWorkers: getOptionValue$1(zipEntry, options, "useWebWorkers")
- }, config);
- if (!writer.initialized) {
- await writer.init();
- }
- const signal = getOptionValue$1(zipEntry, options, "signal");
- const dataOffset = offset + 30 + localDirectory.filenameLength + localDirectory.extraFieldLength;
- await processData(codec, reader, writer, dataOffset, compressedSize, config, { onprogress: options.onprogress, signal });
- return writer.getData();
- }
- }
-
- function readCommonHeader(directory, dataView, offset) {
- const rawBitFlag = directory.rawBitFlag = getUint16(dataView, offset + 2);
- const encrypted = (rawBitFlag & BITFLAG_ENCRYPTED) == BITFLAG_ENCRYPTED;
- const rawLastModDate = getUint32(dataView, offset + 6);
- Object.assign(directory, {
- encrypted,
- version: getUint16(dataView, offset),
- bitFlag: {
- level: (rawBitFlag & BITFLAG_LEVEL) >> 1,
- dataDescriptor: (rawBitFlag & BITFLAG_DATA_DESCRIPTOR) == BITFLAG_DATA_DESCRIPTOR,
- languageEncodingFlag: (rawBitFlag & BITFLAG_LANG_ENCODING_FLAG) == BITFLAG_LANG_ENCODING_FLAG
- },
- rawLastModDate,
- lastModDate: getDate(rawLastModDate),
- filenameLength: getUint16(dataView, offset + 22),
- extraFieldLength: getUint16(dataView, offset + 24)
- });
- }
-
- async function readCommonFooter(fileEntry, directory, dataView, offset) {
- const rawExtraField = directory.rawExtraField;
- const extraField = directory.extraField = new Map();
- const rawExtraFieldView = getDataView$1(new Uint8Array(rawExtraField));
- let offsetExtraField = 0;
- try {
- while (offsetExtraField < rawExtraField.length) {
- const type = getUint16(rawExtraFieldView, offsetExtraField);
- const size = getUint16(rawExtraFieldView, offsetExtraField + 2);
- extraField.set(type, {
- type,
- data: rawExtraField.slice(offsetExtraField + 4, offsetExtraField + 4 + size)
- });
- offsetExtraField += 4 + size;
- }
- } catch (error) {
- // ignored
- }
- const compressionMethod = getUint16(dataView, offset + 4);
- directory.signature = getUint32(dataView, offset + 10);
- directory.uncompressedSize = getUint32(dataView, offset + 18);
- directory.compressedSize = getUint32(dataView, offset + 14);
- const extraFieldZip64 = extraField.get(EXTRAFIELD_TYPE_ZIP64);
- if (extraFieldZip64) {
- readExtraFieldZip64(extraFieldZip64, directory);
- directory.extraFieldZip64 = extraFieldZip64;
- }
- const extraFieldUnicodePath = extraField.get(EXTRAFIELD_TYPE_UNICODE_PATH);
- if (extraFieldUnicodePath) {
- await readExtraFieldUnicode(extraFieldUnicodePath, "filename", "rawFilename", directory, fileEntry);
- directory.extraFieldUnicodePath = extraFieldUnicodePath;
- }
- const extraFieldUnicodeComment = extraField.get(EXTRAFIELD_TYPE_UNICODE_COMMENT);
- if (extraFieldUnicodeComment) {
- await readExtraFieldUnicode(extraFieldUnicodeComment, "comment", "rawComment", directory, fileEntry);
- directory.extraFieldUnicodeComment = extraFieldUnicodeComment;
- }
- const extraFieldAES = extraField.get(EXTRAFIELD_TYPE_AES);
- if (extraFieldAES) {
- readExtraFieldAES(extraFieldAES, directory, compressionMethod);
- directory.extraFieldAES = extraFieldAES;
- } else {
- directory.compressionMethod = compressionMethod;
- }
- const extraFieldNTFS = extraField.get(EXTRAFIELD_TYPE_NTFS);
- if (extraFieldNTFS) {
- readExtraFieldNTFS(extraFieldNTFS, directory);
- directory.extraFieldNTFS = extraFieldNTFS;
- }
- const extraFieldExtendedTimestamp = extraField.get(EXTRAFIELD_TYPE_EXTENDED_TIMESTAMP);
- if (extraFieldExtendedTimestamp) {
- readExtraFieldExtendedTimestamp(extraFieldExtendedTimestamp, directory);
- directory.extraFieldExtendedTimestamp = extraFieldExtendedTimestamp;
- }
- }
-
- function readExtraFieldZip64(extraFieldZip64, directory) {
- directory.zip64 = true;
- const extraFieldView = getDataView$1(extraFieldZip64.data);
- extraFieldZip64.values = [];
- for (let indexValue = 0; indexValue < Math.floor(extraFieldZip64.data.length / 8); indexValue++) {
- extraFieldZip64.values.push(getBigUint64(extraFieldView, 0 + indexValue * 8));
- }
- const missingProperties = ZIP64_PROPERTIES.filter(propertyName => directory[propertyName] == MAX_32_BITS);
- for (let indexMissingProperty = 0; indexMissingProperty < missingProperties.length; indexMissingProperty++) {
- extraFieldZip64[missingProperties[indexMissingProperty]] = extraFieldZip64.values[indexMissingProperty];
- }
- ZIP64_PROPERTIES.forEach(propertyName => {
- if (directory[propertyName] == MAX_32_BITS) {
- if (extraFieldZip64[propertyName] !== undefined) {
- directory[propertyName] = extraFieldZip64[propertyName];
- } else {
- throw new Error(ERR_EXTRAFIELD_ZIP64_NOT_FOUND);
- }
- }
- });
- }
-
- async function readExtraFieldUnicode(extraFieldUnicode, propertyName, rawPropertyName, directory, fileEntry) {
- const extraFieldView = getDataView$1(extraFieldUnicode.data);
- extraFieldUnicode.version = getUint8(extraFieldView, 0);
- extraFieldUnicode.signature = getUint32(extraFieldView, 1);
- const crc32 = new Crc32();
- crc32.append(fileEntry[rawPropertyName]);
- const dataViewSignature = getDataView$1(new Uint8Array(4));
- dataViewSignature.setUint32(0, crc32.get(), true);
- extraFieldUnicode[propertyName] = await decodeText(extraFieldUnicode.data.subarray(5));
- extraFieldUnicode.valid = !fileEntry.bitFlag.languageEncodingFlag && extraFieldUnicode.signature == getUint32(dataViewSignature, 0);
- if (extraFieldUnicode.valid) {
- directory[propertyName] = extraFieldUnicode[propertyName];
- directory[propertyName + "UTF8"] = true;
- }
- }
-
- function readExtraFieldAES(extraFieldAES, directory, compressionMethod) {
- const extraFieldView = getDataView$1(extraFieldAES.data);
- extraFieldAES.vendorVersion = getUint8(extraFieldView, 0);
- extraFieldAES.vendorId = getUint8(extraFieldView, 2);
- const strength = getUint8(extraFieldView, 4);
- extraFieldAES.strength = strength;
- extraFieldAES.originalCompressionMethod = compressionMethod;
- directory.compressionMethod = extraFieldAES.compressionMethod = getUint16(extraFieldView, 5);
- }
-
- function readExtraFieldNTFS(extraFieldNTFS, directory) {
- const extraFieldView = getDataView$1(extraFieldNTFS.data);
- let offsetExtraField = 4;
- let tag1Data;
- try {
- while (offsetExtraField < extraFieldNTFS.data.length && !tag1Data) {
- const tagValue = getUint16(extraFieldView, offsetExtraField);
- const attributeSize = getUint16(extraFieldView, offsetExtraField + 2);
- if (tagValue == EXTRAFIELD_TYPE_NTFS_TAG1) {
- tag1Data = extraFieldNTFS.data.slice(offsetExtraField + 4, offsetExtraField + 4 + attributeSize);
- }
- offsetExtraField += 4 + attributeSize;
- }
- } catch (error) {
- // ignored
- }
- try {
- if (tag1Data && tag1Data.length == 24) {
- const tag1View = getDataView$1(tag1Data);
- const rawLastModDate = tag1View.getBigUint64(0, true);
- const rawLastAccessDate = tag1View.getBigUint64(8, true);
- const rawCreationDate = tag1View.getBigUint64(16, true);
- Object.assign(extraFieldNTFS, {
- rawLastModDate,
- rawLastAccessDate,
- rawCreationDate
- });
- const lastModDate = getDateNTFS(rawLastModDate);
- const lastAccessDate = getDateNTFS(rawLastAccessDate);
- const creationDate = getDateNTFS(rawCreationDate);
- const extraFieldData = { lastModDate, lastAccessDate, creationDate };
- Object.assign(extraFieldNTFS, extraFieldData);
- Object.assign(directory, extraFieldData);
- }
- } catch (error) {
- // ignored
- }
- }
-
- function readExtraFieldExtendedTimestamp(extraFieldExtendedTimestamp, directory) {
- const extraFieldView = getDataView$1(extraFieldExtendedTimestamp.data);
- const flags = getUint8(extraFieldView, 0);
- const timeProperties = [];
- const timeRawProperties = [];
- if ((flags & 0x1) == 0x1) {
- timeProperties.push("lastModDate");
- timeRawProperties.push("rawLastModDate");
- }
- if ((flags & 0x2) == 0x2) {
- timeProperties.push("lastAccessDate");
- timeRawProperties.push("rawLastAccessDate");
- }
- if ((flags & 0x4) == 0x4) {
- timeProperties.push("creationDate");
- timeRawProperties.push("rawCreationDate");
- }
- let offset = 1;
- timeProperties.forEach((propertyName, indexProperty) => {
- if (extraFieldExtendedTimestamp.data.length >= offset + 4) {
- const time = getUint32(extraFieldView, offset);
- directory[propertyName] = extraFieldExtendedTimestamp[propertyName] = new Date(time * 1000);
- const rawPropertyName = timeRawProperties[indexProperty];
- extraFieldExtendedTimestamp[rawPropertyName] = time;
- }
- offset += 4;
- });
- }
-
- async function seekSignature(reader, signature, startOffset, minimumBytes, maximumLength) {
- const signatureArray = new Uint8Array(4);
- const signatureView = getDataView$1(signatureArray);
- setUint32$1(signatureView, 0, signature);
- const maximumBytes = minimumBytes + maximumLength;
- return (await seek(minimumBytes)) || await seek(Math.min(maximumBytes, startOffset));
-
- async function seek(length) {
- const offset = startOffset - length;
- const bytes = await readUint8Array(reader, offset, length);
- for (let indexByte = bytes.length - minimumBytes; indexByte >= 0; indexByte--) {
- if (bytes[indexByte] == signatureArray[0] && bytes[indexByte + 1] == signatureArray[1] &&
- bytes[indexByte + 2] == signatureArray[2] && bytes[indexByte + 3] == signatureArray[3]) {
- return {
- offset: offset + indexByte,
- buffer: bytes.slice(indexByte, indexByte + minimumBytes).buffer
- };
- }
- }
- }
- }
-
- function getOptionValue$1(zipReader, options, name) {
- return options[name] === undefined ? zipReader.options[name] : options[name];
- }
-
- function getDate(timeRaw) {
- const date = (timeRaw & 0xffff0000) >> 16, time = timeRaw & 0x0000ffff;
- try {
- return new Date(1980 + ((date & 0xFE00) >> 9), ((date & 0x01E0) >> 5) - 1, date & 0x001F, (time & 0xF800) >> 11, (time & 0x07E0) >> 5, (time & 0x001F) * 2, 0);
- } catch (error) {
- // ignored
- }
- }
-
- function getDateNTFS(timeRaw) {
- return new Date((Number((timeRaw / BigInt(10000)) - BigInt(11644473600000))));
- }
-
- function getUint8(view, offset) {
- return view.getUint8(offset);
- }
-
- function getUint16(view, offset) {
- return view.getUint16(offset, true);
- }
-
- function getUint32(view, offset) {
- return view.getUint32(offset, true);
- }
-
- function getBigUint64(view, offset) {
- return Number(view.getBigUint64(offset, true));
- }
-
- function setUint32$1(view, offset, value) {
- view.setUint32(offset, value, true);
- }
-
- function getDataView$1(array) {
- return new DataView(array.buffer);
- }
-
- function readUint8Array(reader, offset, size) {
- return reader.readUint8Array(offset, size);
- }
-
- /*
- Copyright (c) 2022 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.
- */
-
- const ERR_DUPLICATED_NAME = "File already exists";
- const ERR_INVALID_COMMENT = "Zip file comment exceeds 64KB";
- const ERR_INVALID_ENTRY_COMMENT = "File entry comment exceeds 64KB";
- const ERR_INVALID_ENTRY_NAME = "File entry name exceeds 64KB";
- const ERR_INVALID_VERSION = "Version exceeds 65535";
- const ERR_INVALID_ENCRYPTION_STRENGTH = "The strength must equal 1, 2, or 3";
- const ERR_INVALID_EXTRAFIELD_TYPE = "Extra field type exceeds 65535";
- const ERR_INVALID_EXTRAFIELD_DATA = "Extra field data exceeds 64KB";
- const ERR_UNSUPPORTED_FORMAT = "Zip64 is not supported";
-
- const EXTRAFIELD_DATA_AES = new Uint8Array([0x07, 0x00, 0x02, 0x00, 0x41, 0x45, 0x03, 0x00, 0x00]);
- const EXTRAFIELD_LENGTH_ZIP64 = 24;
-
- let workers = 0;
-
- class ZipWriter {
-
- constructor(writer, options = {}) {
- Object.assign(this, {
- writer,
- options,
- config: getConfiguration(),
- files: new Map(),
- offset: writer.size,
- pendingCompressedSize: 0,
- pendingEntries: []
- });
- }
-
- async add(name = "", reader, options = {}) {
- const zipWriter = this;
- if (workers < zipWriter.config.maxWorkers) {
- workers++;
- try {
- return await addFile(zipWriter, name, reader, options);
- } finally {
- workers--;
- const pendingEntry = zipWriter.pendingEntries.shift();
- if (pendingEntry) {
- zipWriter.add(pendingEntry.name, pendingEntry.reader, pendingEntry.options)
- .then(pendingEntry.resolve)
- .catch(pendingEntry.reject);
- }
- }
- } else {
- return new Promise((resolve, reject) => zipWriter.pendingEntries.push({ name, reader, options, resolve, reject }));
- }
- }
-
- async close(comment = new Uint8Array(0), options = {}) {
- await closeFile(this, comment, options);
- return this.writer.getData();
- }
- }
-
- async function addFile(zipWriter, name, reader, options) {
- name = name.trim();
- if (options.directory && (!name.endsWith(DIRECTORY_SIGNATURE))) {
- name += DIRECTORY_SIGNATURE;
- } else {
- options.directory = name.endsWith(DIRECTORY_SIGNATURE);
- }
- if (zipWriter.files.has(name)) {
- throw new Error(ERR_DUPLICATED_NAME);
- }
- const rawFilename = encodeText(name);
- if (rawFilename.length > MAX_16_BITS) {
- throw new Error(ERR_INVALID_ENTRY_NAME);
- }
- const comment = options.comment || "";
- const rawComment = encodeText(comment);
- if (rawComment.length > MAX_16_BITS) {
- throw new Error(ERR_INVALID_ENTRY_COMMENT);
- }
- const version = zipWriter.options.version || options.version || 0;
- if (version > MAX_16_BITS) {
- throw new Error(ERR_INVALID_VERSION);
- }
- const versionMadeBy = zipWriter.options.versionMadeBy || options.versionMadeBy || 20;
- if (versionMadeBy > MAX_16_BITS) {
- throw new Error(ERR_INVALID_VERSION);
- }
- const lastModDate = getOptionValue(zipWriter, options, "lastModDate") || new Date();
- const lastAccessDate = getOptionValue(zipWriter, options, "lastAccessDate");
- const creationDate = getOptionValue(zipWriter, options, "creationDate");
- const password = getOptionValue(zipWriter, options, "password");
- const encryptionStrength = getOptionValue(zipWriter, options, "encryptionStrength") || 3;
- const zipCrypto = getOptionValue(zipWriter, options, "zipCrypto");
- if (password !== undefined && encryptionStrength !== undefined && (encryptionStrength < 1 || encryptionStrength > 3)) {
- throw new Error(ERR_INVALID_ENCRYPTION_STRENGTH);
- }
- let rawExtraField = new Uint8Array(0);
- const extraField = options.extraField;
- if (extraField) {
- let extraFieldSize = 0;
- let offset = 0;
- extraField.forEach(data => extraFieldSize += 4 + data.length);
- rawExtraField = new Uint8Array(extraFieldSize);
- extraField.forEach((data, type) => {
- if (type > MAX_16_BITS) {
- throw new Error(ERR_INVALID_EXTRAFIELD_TYPE);
- }
- if (data.length > MAX_16_BITS) {
- throw new Error(ERR_INVALID_EXTRAFIELD_DATA);
- }
- arraySet(rawExtraField, new Uint16Array([type]), offset);
- arraySet(rawExtraField, new Uint16Array([data.length]), offset + 2);
- arraySet(rawExtraField, data, offset + 4);
- offset += 4 + data.length;
- });
- }
- let extendedTimestamp = getOptionValue(zipWriter, options, "extendedTimestamp");
- if (extendedTimestamp === undefined) {
- extendedTimestamp = true;
- }
- let maximumCompressedSize = 0;
- let keepOrder = getOptionValue(zipWriter, options, "keepOrder");
- if (keepOrder === undefined) {
- keepOrder = true;
- }
- let uncompressedSize = 0;
- let msDosCompatible = getOptionValue(zipWriter, options, "msDosCompatible");
- if (msDosCompatible === undefined) {
- msDosCompatible = true;
- }
- const internalFileAttribute = getOptionValue(zipWriter, options, "internalFileAttribute") || 0;
- const externalFileAttribute = getOptionValue(zipWriter, options, "externalFileAttribute") || 0;
- if (reader) {
- if (!reader.initialized) {
- await reader.init();
- }
- uncompressedSize = reader.size;
- maximumCompressedSize = getMaximumCompressedSize(uncompressedSize);
- }
- let zip64 = options.zip64 || zipWriter.options.zip64 || false;
- if (zipWriter.offset + zipWriter.pendingCompressedSize >= MAX_32_BITS ||
- uncompressedSize >= MAX_32_BITS ||
- maximumCompressedSize >= MAX_32_BITS) {
- if (options.zip64 === false || zipWriter.options.zip64 === false || !keepOrder) {
- throw new Error(ERR_UNSUPPORTED_FORMAT);
- } else {
- zip64 = true;
- }
- }
- zipWriter.pendingCompressedSize += maximumCompressedSize;
- await Promise.resolve();
- const level = getOptionValue(zipWriter, options, "level");
- const useWebWorkers = getOptionValue(zipWriter, options, "useWebWorkers");
- const bufferedWrite = getOptionValue(zipWriter, options, "bufferedWrite");
- let dataDescriptor = getOptionValue(zipWriter, options, "dataDescriptor");
- let dataDescriptorSignature = getOptionValue(zipWriter, options, "dataDescriptorSignature");
- const signal = getOptionValue(zipWriter, options, "signal");
- if (dataDescriptor === undefined) {
- dataDescriptor = true;
- }
- if (dataDescriptor && dataDescriptorSignature === undefined) {
- dataDescriptorSignature = true;
- }
- const fileEntry = await getFileEntry(zipWriter, name, reader, Object.assign({}, options, {
- rawFilename,
- rawComment,
- version,
- versionMadeBy,
- lastModDate,
- lastAccessDate,
- creationDate,
- rawExtraField,
- zip64,
- password,
- level,
- useWebWorkers,
- encryptionStrength,
- extendedTimestamp,
- zipCrypto,
- bufferedWrite,
- keepOrder,
- dataDescriptor,
- dataDescriptorSignature,
- signal,
- msDosCompatible,
- internalFileAttribute,
- externalFileAttribute
- }));
- if (maximumCompressedSize) {
- zipWriter.pendingCompressedSize -= maximumCompressedSize;
- }
- Object.assign(fileEntry, { name, comment, extraField });
- return new Entry(fileEntry);
- }
-
- async function getFileEntry(zipWriter, name, reader, options) {
- const files = zipWriter.files;
- const writer = zipWriter.writer;
- const previousFileEntry = Array.from(files.values()).pop();
- let fileEntry = {};
- let bufferedWrite;
- let resolveLockUnbufferedWrite;
- let resolveLockCurrentFileEntry;
- files.set(name, fileEntry);
- try {
- let lockPreviousFileEntry;
- let fileWriter;
- let lockCurrentFileEntry;
- if (options.keepOrder) {
- lockPreviousFileEntry = previousFileEntry && previousFileEntry.lock;
- }
- fileEntry.lock = lockCurrentFileEntry = new Promise(resolve => resolveLockCurrentFileEntry = resolve);
- if (options.bufferedWrite || zipWriter.lockWrite || !options.dataDescriptor) {
- fileWriter = new BlobWriter();
- fileWriter.init();
- bufferedWrite = true;
- } else {
- zipWriter.lockWrite = new Promise(resolve => resolveLockUnbufferedWrite = resolve);
- if (!writer.initialized) {
- await writer.init();
- }
- fileWriter = writer;
- }
- fileEntry = await createFileEntry(reader, fileWriter, zipWriter.config, options);
- fileEntry.lock = lockCurrentFileEntry;
- files.set(name, fileEntry);
- fileEntry.filename = name;
- if (bufferedWrite) {
- let indexWrittenData = 0;
- const blob = fileWriter.getData();
- await Promise.all([zipWriter.lockWrite, lockPreviousFileEntry]);
- let pendingFileEntry;
- do {
- pendingFileEntry = Array.from(files.values()).find(fileEntry => fileEntry.writingBufferedData);
- if (pendingFileEntry) {
- await pendingFileEntry.lock;
- }
- } while (pendingFileEntry && pendingFileEntry.lock);
- fileEntry.writingBufferedData = true;
- if (!options.dataDescriptor) {
- const headerLength = 26;
- const arrayBuffer = await sliceAsArrayBuffer(blob, 0, headerLength);
- const arrayBufferView = new DataView(arrayBuffer);
- if (!fileEntry.encrypted || options.zipCrypto) {
- setUint32(arrayBufferView, 14, fileEntry.signature);
- }
- if (fileEntry.zip64) {
- setUint32(arrayBufferView, 18, MAX_32_BITS);
- setUint32(arrayBufferView, 22, MAX_32_BITS);
- } else {
- setUint32(arrayBufferView, 18, fileEntry.compressedSize);
- setUint32(arrayBufferView, 22, fileEntry.uncompressedSize);
- }
- await writer.writeUint8Array(new Uint8Array(arrayBuffer));
- indexWrittenData = headerLength;
- }
- await writeBlob(writer, blob, indexWrittenData);
- delete fileEntry.writingBufferedData;
- }
- fileEntry.offset = zipWriter.offset;
- if (fileEntry.zip64) {
- const rawExtraFieldZip64View = getDataView(fileEntry.rawExtraFieldZip64);
- setBigUint64(rawExtraFieldZip64View, 20, BigInt(fileEntry.offset));
- } else if (fileEntry.offset >= MAX_32_BITS) {
- throw new Error(ERR_UNSUPPORTED_FORMAT);
- }
- zipWriter.offset += fileEntry.length;
- return fileEntry;
- } catch (error) {
- if ((bufferedWrite && fileEntry.writingBufferedData) || (!bufferedWrite && fileEntry.dataWritten)) {
- error.corruptedEntry = zipWriter.hasCorruptedEntries = true;
- if (fileEntry.uncompressedSize) {
- zipWriter.offset += fileEntry.uncompressedSize;
- }
- }
- files.delete(name);
- throw error;
- } finally {
- resolveLockCurrentFileEntry();
- if (resolveLockUnbufferedWrite) {
- resolveLockUnbufferedWrite();
- }
- }
- }
-
- async function createFileEntry(reader, writer, config, options) {
- const {
- rawFilename,
- lastAccessDate,
- creationDate,
- password,
- level,
- zip64,
- zipCrypto,
- dataDescriptor,
- dataDescriptorSignature,
- directory,
- version,
- versionMadeBy,
- rawComment,
- rawExtraField,
- useWebWorkers,
- onprogress,
- signal,
- encryptionStrength,
- extendedTimestamp,
- msDosCompatible,
- internalFileAttribute,
- externalFileAttribute
- } = options;
- const encrypted = Boolean(password && password.length);
- const compressed = level !== 0 && !directory;
- let rawExtraFieldAES;
- if (encrypted && !zipCrypto) {
- rawExtraFieldAES = new Uint8Array(EXTRAFIELD_DATA_AES.length + 2);
- const extraFieldAESView = getDataView(rawExtraFieldAES);
- setUint16(extraFieldAESView, 0, EXTRAFIELD_TYPE_AES);
- arraySet(rawExtraFieldAES, EXTRAFIELD_DATA_AES, 2);
- setUint8(extraFieldAESView, 8, encryptionStrength);
- } else {
- rawExtraFieldAES = new Uint8Array(0);
- }
- let rawExtraFieldNTFS;
- let rawExtraFieldExtendedTimestamp;
- if (extendedTimestamp) {
- rawExtraFieldExtendedTimestamp = new Uint8Array(9 + (lastAccessDate ? 4 : 0) + (creationDate ? 4 : 0));
- const extraFieldExtendedTimestampView = getDataView(rawExtraFieldExtendedTimestamp);
- setUint16(extraFieldExtendedTimestampView, 0, EXTRAFIELD_TYPE_EXTENDED_TIMESTAMP);
- setUint16(extraFieldExtendedTimestampView, 2, rawExtraFieldExtendedTimestamp.length - 4);
- const extraFieldExtendedTimestampFlag = 0x1 + (lastAccessDate ? 0x2 : 0) + (creationDate ? 0x4 : 0);
- setUint8(extraFieldExtendedTimestampView, 4, extraFieldExtendedTimestampFlag);
- setUint32(extraFieldExtendedTimestampView, 5, Math.floor(options.lastModDate.getTime() / 1000));
- if (lastAccessDate) {
- setUint32(extraFieldExtendedTimestampView, 9, Math.floor(lastAccessDate.getTime() / 1000));
- }
- if (creationDate) {
- setUint32(extraFieldExtendedTimestampView, 13, Math.floor(creationDate.getTime() / 1000));
- }
- try {
- rawExtraFieldNTFS = new Uint8Array(36);
- const extraFieldNTFSView = getDataView(rawExtraFieldNTFS);
- const lastModTimeNTFS = getTimeNTFS(options.lastModDate);
- setUint16(extraFieldNTFSView, 0, EXTRAFIELD_TYPE_NTFS);
- setUint16(extraFieldNTFSView, 2, 32);
- setUint16(extraFieldNTFSView, 8, EXTRAFIELD_TYPE_NTFS_TAG1);
- setUint16(extraFieldNTFSView, 10, 24);
- setBigUint64(extraFieldNTFSView, 12, lastModTimeNTFS);
- setBigUint64(extraFieldNTFSView, 20, getTimeNTFS(lastAccessDate) || lastModTimeNTFS);
- setBigUint64(extraFieldNTFSView, 28, getTimeNTFS(creationDate) || lastModTimeNTFS);
- } catch (error) {
- rawExtraFieldNTFS = new Uint8Array(0);
- }
- } else {
- rawExtraFieldNTFS = rawExtraFieldExtendedTimestamp = new Uint8Array(0);
- }
- const fileEntry = {
- version: version || VERSION_DEFLATE,
- versionMadeBy,
- zip64,
- directory: Boolean(directory),
- filenameUTF8: true,
- rawFilename,
- commentUTF8: true,
- rawComment,
- rawExtraFieldZip64: zip64 ? new Uint8Array(EXTRAFIELD_LENGTH_ZIP64 + 4) : new Uint8Array(0),
- rawExtraFieldExtendedTimestamp,
- rawExtraFieldNTFS,
- rawExtraFieldAES,
- rawExtraField,
- extendedTimestamp,
- msDosCompatible,
- internalFileAttribute,
- externalFileAttribute
- };
- let uncompressedSize = fileEntry.uncompressedSize = 0;
- let bitFlag = BITFLAG_LANG_ENCODING_FLAG;
- if (dataDescriptor) {
- bitFlag = bitFlag | BITFLAG_DATA_DESCRIPTOR;
- }
- let compressionMethod = COMPRESSION_METHOD_STORE;
- if (compressed) {
- compressionMethod = COMPRESSION_METHOD_DEFLATE;
- }
- if (zip64) {
- fileEntry.version = fileEntry.version > VERSION_ZIP64 ? fileEntry.version : VERSION_ZIP64;
- }
- if (encrypted) {
- bitFlag = bitFlag | BITFLAG_ENCRYPTED;
- if (!zipCrypto) {
- fileEntry.version = fileEntry.version > VERSION_AES ? fileEntry.version : VERSION_AES;
- compressionMethod = COMPRESSION_METHOD_AES;
- if (compressed) {
- fileEntry.rawExtraFieldAES[9] = COMPRESSION_METHOD_DEFLATE;
- }
- }
- }
- fileEntry.compressionMethod = compressionMethod;
- const headerArray = fileEntry.headerArray = new Uint8Array(26);
- const headerView = getDataView(headerArray);
- setUint16(headerView, 0, fileEntry.version);
- setUint16(headerView, 2, bitFlag);
- setUint16(headerView, 4, compressionMethod);
- const dateArray = new Uint32Array(1);
- const dateView = getDataView(dateArray);
- let lastModDate;
- if (options.lastModDate < MIN_DATE) {
- lastModDate = MIN_DATE;
- } else if (options.lastModDate > MAX_DATE) {
- lastModDate = MAX_DATE;
- } else {
- lastModDate = options.lastModDate;
- }
- setUint16(dateView, 0, (((lastModDate.getHours() << 6) | lastModDate.getMinutes()) << 5) | lastModDate.getSeconds() / 2);
- setUint16(dateView, 2, ((((lastModDate.getFullYear() - 1980) << 4) | (lastModDate.getMonth() + 1)) << 5) | lastModDate.getDate());
- const rawLastModDate = dateArray[0];
- setUint32(headerView, 6, rawLastModDate);
- setUint16(headerView, 22, rawFilename.length);
- const extraFieldLength = rawExtraFieldAES.length + rawExtraFieldExtendedTimestamp.length + rawExtraFieldNTFS.length + fileEntry.rawExtraField.length;
- setUint16(headerView, 24, extraFieldLength);
- const localHeaderArray = new Uint8Array(30 + rawFilename.length + extraFieldLength);
- const localHeaderView = getDataView(localHeaderArray);
- setUint32(localHeaderView, 0, LOCAL_FILE_HEADER_SIGNATURE);
- arraySet(localHeaderArray, headerArray, 4);
- arraySet(localHeaderArray, rawFilename, 30);
- arraySet(localHeaderArray, rawExtraFieldAES, 30 + rawFilename.length);
- arraySet(localHeaderArray, rawExtraFieldExtendedTimestamp, 30 + rawFilename.length + rawExtraFieldAES.length);
- arraySet(localHeaderArray, rawExtraFieldNTFS, 30 + rawFilename.length + rawExtraFieldAES.length + rawExtraFieldExtendedTimestamp.length);
- arraySet(localHeaderArray, fileEntry.rawExtraField, 30 + rawFilename.length + rawExtraFieldAES.length + rawExtraFieldExtendedTimestamp.length + rawExtraFieldNTFS.length);
- let result;
- let compressedSize = 0;
- if (reader) {
- uncompressedSize = fileEntry.uncompressedSize = reader.size;
- const codec = await createCodec(config.Deflate, {
- codecType: CODEC_DEFLATE,
- level,
- password,
- encryptionStrength,
- zipCrypto: encrypted && zipCrypto,
- passwordVerification: encrypted && zipCrypto && (rawLastModDate >> 8) & 0xFF,
- signed: true,
- compressed,
- encrypted,
- useWebWorkers
- }, config);
- await writer.writeUint8Array(localHeaderArray);
- fileEntry.dataWritten = true;
- result = await processData(codec, reader, writer, 0, uncompressedSize, config, { onprogress, signal });
- compressedSize = result.length;
- } else {
- await writer.writeUint8Array(localHeaderArray);
- fileEntry.dataWritten = true;
- }
- let dataDescriptorArray = new Uint8Array(0);
- let dataDescriptorView, dataDescriptorOffset = 0;
- if (dataDescriptor) {
- dataDescriptorArray = new Uint8Array(zip64 ? (dataDescriptorSignature ? 24 : 20) : (dataDescriptorSignature ? 16 : 12));
- dataDescriptorView = getDataView(dataDescriptorArray);
- if (dataDescriptorSignature) {
- dataDescriptorOffset = 4;
- setUint32(dataDescriptorView, 0, DATA_DESCRIPTOR_RECORD_SIGNATURE);
- }
- }
- if (reader) {
- const signature = result.signature;
- if ((!encrypted || zipCrypto) && signature !== undefined) {
- setUint32(headerView, 10, signature);
- fileEntry.signature = signature;
- if (dataDescriptor) {
- setUint32(dataDescriptorView, dataDescriptorOffset, signature);
- }
- }
- if (zip64) {
- const rawExtraFieldZip64View = getDataView(fileEntry.rawExtraFieldZip64);
- setUint16(rawExtraFieldZip64View, 0, EXTRAFIELD_TYPE_ZIP64);
- setUint16(rawExtraFieldZip64View, 2, EXTRAFIELD_LENGTH_ZIP64);
- setUint32(headerView, 14, MAX_32_BITS);
- setBigUint64(rawExtraFieldZip64View, 12, BigInt(compressedSize));
- setUint32(headerView, 18, MAX_32_BITS);
- setBigUint64(rawExtraFieldZip64View, 4, BigInt(uncompressedSize));
- if (dataDescriptor) {
- setBigUint64(dataDescriptorView, dataDescriptorOffset + 4, BigInt(compressedSize));
- setBigUint64(dataDescriptorView, dataDescriptorOffset + 12, BigInt(uncompressedSize));
- }
- } else {
- setUint32(headerView, 14, compressedSize);
- setUint32(headerView, 18, uncompressedSize);
- if (dataDescriptor) {
- setUint32(dataDescriptorView, dataDescriptorOffset + 4, compressedSize);
- setUint32(dataDescriptorView, dataDescriptorOffset + 8, uncompressedSize);
- }
- }
- }
- if (dataDescriptor) {
- await writer.writeUint8Array(dataDescriptorArray);
- }
- const length = localHeaderArray.length + compressedSize + dataDescriptorArray.length;
- Object.assign(fileEntry, { compressedSize, lastModDate, rawLastModDate, creationDate, lastAccessDate, encrypted, length });
- return fileEntry;
- }
-
- async function closeFile(zipWriter, comment, options) {
- const writer = zipWriter.writer;
- const files = zipWriter.files;
- let offset = 0;
- let directoryDataLength = 0;
- let directoryOffset = zipWriter.offset;
- let filesLength = files.size;
- for (const [, fileEntry] of files) {
- directoryDataLength += 46 +
- fileEntry.rawFilename.length +
- fileEntry.rawComment.length +
- fileEntry.rawExtraFieldZip64.length +
- fileEntry.rawExtraFieldAES.length +
- fileEntry.rawExtraFieldExtendedTimestamp.length +
- fileEntry.rawExtraFieldNTFS.length +
- fileEntry.rawExtraField.length;
- }
- let zip64 = options.zip64 || zipWriter.options.zip64 || false;
- if (directoryOffset >= MAX_32_BITS || directoryDataLength >= MAX_32_BITS || filesLength >= MAX_16_BITS) {
- if (options.zip64 === false || zipWriter.options.zip64 === false) {
- throw new Error(ERR_UNSUPPORTED_FORMAT);
- } else {
- zip64 = true;
- }
- }
- const directoryArray = new Uint8Array(directoryDataLength + (zip64 ? ZIP64_END_OF_CENTRAL_DIR_TOTAL_LENGTH : END_OF_CENTRAL_DIR_LENGTH));
- const directoryView = getDataView(directoryArray);
- if (comment && comment.length) {
- if (comment.length <= MAX_16_BITS) {
- setUint16(directoryView, offset + 20, comment.length);
- } else {
- throw new Error(ERR_INVALID_COMMENT);
- }
- }
- for (const [indexFileEntry, fileEntry] of Array.from(files.values()).entries()) {
- const {
- rawFilename,
- rawExtraFieldZip64,
- rawExtraFieldAES,
- rawExtraField,
- rawComment,
- versionMadeBy,
- headerArray,
- directory,
- zip64,
- msDosCompatible,
- internalFileAttribute,
- externalFileAttribute
- } = fileEntry;
- let rawExtraFieldExtendedTimestamp;
- let rawExtraFieldNTFS;
- if (fileEntry.extendedTimestamp) {
- rawExtraFieldNTFS = fileEntry.rawExtraFieldNTFS;
- rawExtraFieldExtendedTimestamp = new Uint8Array(9);
- const extraFieldExtendedTimestampView = getDataView(rawExtraFieldExtendedTimestamp);
- setUint16(extraFieldExtendedTimestampView, 0, EXTRAFIELD_TYPE_EXTENDED_TIMESTAMP);
- setUint16(extraFieldExtendedTimestampView, 2, rawExtraFieldExtendedTimestamp.length - 4);
- setUint8(extraFieldExtendedTimestampView, 4, 0x1);
- setUint32(extraFieldExtendedTimestampView, 5, Math.floor(fileEntry.lastModDate.getTime() / 1000));
- } else {
- rawExtraFieldNTFS = rawExtraFieldExtendedTimestamp = new Uint8Array(0);
- }
- const extraFieldLength = rawExtraFieldZip64.length + rawExtraFieldAES.length + rawExtraFieldExtendedTimestamp.length + rawExtraFieldNTFS.length + rawExtraField.length;
- setUint32(directoryView, offset, CENTRAL_FILE_HEADER_SIGNATURE);
- setUint16(directoryView, offset + 4, versionMadeBy);
- arraySet(directoryArray, headerArray, offset + 6);
- setUint16(directoryView, offset + 30, extraFieldLength);
- setUint16(directoryView, offset + 32, rawComment.length);
- setUint32(directoryView, offset + 34, internalFileAttribute);
- if (externalFileAttribute) {
- setUint32(directoryView, offset + 38, externalFileAttribute);
- } else if (directory && msDosCompatible) {
- setUint8(directoryView, offset + 38, FILE_ATTR_MSDOS_DIR_MASK);
- }
- if (zip64) {
- setUint32(directoryView, offset + 42, MAX_32_BITS);
- } else {
- setUint32(directoryView, offset + 42, fileEntry.offset);
- }
- arraySet(directoryArray, rawFilename, offset + 46);
- arraySet(directoryArray, rawExtraFieldZip64, offset + 46 + rawFilename.length);
- arraySet(directoryArray, rawExtraFieldAES, offset + 46 + rawFilename.length + rawExtraFieldZip64.length);
- arraySet(directoryArray, rawExtraFieldExtendedTimestamp, offset + 46 + rawFilename.length + rawExtraFieldZip64.length + rawExtraFieldAES.length);
- arraySet(directoryArray, rawExtraFieldNTFS, offset + 46 + rawFilename.length + rawExtraFieldZip64.length + rawExtraFieldAES.length + rawExtraFieldExtendedTimestamp.length);
- arraySet(directoryArray, rawExtraField, offset + 46 + rawFilename.length + rawExtraFieldZip64.length + rawExtraFieldAES.length + rawExtraFieldExtendedTimestamp.length + rawExtraFieldNTFS.length);
- arraySet(directoryArray, rawComment, offset + 46 + rawFilename.length + extraFieldLength);
- offset += 46 + rawFilename.length + extraFieldLength + rawComment.length;
- if (options.onprogress) {
- try {
- options.onprogress(indexFileEntry + 1, files.size, new Entry(fileEntry));
- } catch (error) {
- // ignored
- }
- }
- }
- if (zip64) {
- setUint32(directoryView, offset, ZIP64_END_OF_CENTRAL_DIR_SIGNATURE);
- setBigUint64(directoryView, offset + 4, BigInt(44));
- setUint16(directoryView, offset + 12, 45);
- setUint16(directoryView, offset + 14, 45);
- setBigUint64(directoryView, offset + 24, BigInt(filesLength));
- setBigUint64(directoryView, offset + 32, BigInt(filesLength));
- setBigUint64(directoryView, offset + 40, BigInt(directoryDataLength));
- setBigUint64(directoryView, offset + 48, BigInt(directoryOffset));
- setUint32(directoryView, offset + 56, ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIGNATURE);
- setBigUint64(directoryView, offset + 64, BigInt(directoryOffset) + BigInt(directoryDataLength));
- setUint32(directoryView, offset + 72, ZIP64_TOTAL_NUMBER_OF_DISKS);
- filesLength = MAX_16_BITS;
- directoryOffset = MAX_32_BITS;
- directoryDataLength = MAX_32_BITS;
- offset += 76;
- }
- setUint32(directoryView, offset, END_OF_CENTRAL_DIR_SIGNATURE);
- setUint16(directoryView, offset + 8, filesLength);
- setUint16(directoryView, offset + 10, filesLength);
- setUint32(directoryView, offset + 12, directoryDataLength);
- setUint32(directoryView, offset + 16, directoryOffset);
- await writer.writeUint8Array(directoryArray);
- if (comment && comment.length) {
- await writer.writeUint8Array(comment);
- }
- }
-
- function sliceAsArrayBuffer(blob, start, end) {
- if (blob.arrayBuffer) {
- if (start || end) {
- return blob.slice(start, end).arrayBuffer();
- } else {
- return blob.arrayBuffer();
- }
- } else {
- const fileReader = new FileReader();
- return new Promise((resolve, reject) => {
- fileReader.onload = event => resolve(event.target.result);
- fileReader.onerror = () => reject(fileReader.error);
- fileReader.readAsArrayBuffer(start || end ? blob.slice(start, end) : blob);
- });
- }
- }
-
- async function writeBlob(writer, blob, start = 0) {
- const blockSize = 512 * 1024 * 1024;
- await writeSlice();
-
- async function writeSlice() {
- if (start < blob.size) {
- const arrayBuffer = await sliceAsArrayBuffer(blob, start, start + blockSize);
- await writer.writeUint8Array(new Uint8Array(arrayBuffer));
- start += blockSize;
- await writeSlice();
- }
- }
- }
-
- function getTimeNTFS(date) {
- if (date) {
- return ((BigInt(date.getTime()) + BigInt(11644473600000)) * BigInt(10000));
- }
- }
-
- function getOptionValue(zipWriter, options, name) {
- return options[name] === undefined ? zipWriter.options[name] : options[name];
- }
-
- function getMaximumCompressedSize(uncompressedSize) {
- return uncompressedSize + (5 * (Math.floor(uncompressedSize / 16383) + 1));
- }
-
- function setUint8(view, offset, value) {
- view.setUint8(offset, value);
- }
-
- function setUint16(view, offset, value) {
- view.setUint16(offset, value, true);
- }
-
- function setUint32(view, offset, value) {
- view.setUint32(offset, value, true);
- }
-
- function setBigUint64(view, offset, value) {
- view.setBigUint64(offset, value, true);
- }
-
- function arraySet(array, typedArray, offset) {
- array.set(typedArray, offset);
- }
-
- function getDataView(array) {
- return new DataView(array.buffer);
- }
-
- /*
- Copyright (c) 2022 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.
- */
-
- let baseURL;
- try {
- baseURL = (typeof document === 'undefined' && typeof location === 'undefined' ? new (require('u' + 'rl').URL)('file:' + __filename).href : typeof document === 'undefined' ? location.href : (document.currentScript && document.currentScript.src || new URL('zip-full.js', document.baseURI).href));
- } catch (error) {
- // ignored
- }
- t(configure);
- configure({ Deflate: ZipDeflate, Inflate: ZipInflate, baseURL });
-
- exports.BlobReader = BlobReader;
- exports.BlobWriter = BlobWriter;
- exports.Data64URIReader = Data64URIReader;
- exports.Data64URIWriter = Data64URIWriter;
- exports.ERR_ABORT = ERR_ABORT;
- exports.ERR_BAD_FORMAT = ERR_BAD_FORMAT;
- exports.ERR_CENTRAL_DIRECTORY_NOT_FOUND = ERR_CENTRAL_DIRECTORY_NOT_FOUND;
- exports.ERR_DUPLICATED_NAME = ERR_DUPLICATED_NAME;
- exports.ERR_ENCRYPTED = ERR_ENCRYPTED;
- exports.ERR_EOCDR_LOCATOR_ZIP64_NOT_FOUND = ERR_EOCDR_LOCATOR_ZIP64_NOT_FOUND;
- exports.ERR_EOCDR_NOT_FOUND = ERR_EOCDR_NOT_FOUND;
- exports.ERR_EOCDR_ZIP64_NOT_FOUND = ERR_EOCDR_ZIP64_NOT_FOUND;
- exports.ERR_EXTRAFIELD_ZIP64_NOT_FOUND = ERR_EXTRAFIELD_ZIP64_NOT_FOUND;
- exports.ERR_HTTP_RANGE = ERR_HTTP_RANGE;
- exports.ERR_INVALID_COMMENT = ERR_INVALID_COMMENT;
- exports.ERR_INVALID_ENCRYPTION_STRENGTH = ERR_INVALID_ENCRYPTION_STRENGTH;
- exports.ERR_INVALID_ENTRY_COMMENT = ERR_INVALID_ENTRY_COMMENT;
- exports.ERR_INVALID_ENTRY_NAME = ERR_INVALID_ENTRY_NAME;
- exports.ERR_INVALID_EXTRAFIELD_DATA = ERR_INVALID_EXTRAFIELD_DATA;
- exports.ERR_INVALID_EXTRAFIELD_TYPE = ERR_INVALID_EXTRAFIELD_TYPE;
- exports.ERR_INVALID_PASSWORD = ERR_INVALID_PASSWORD;
- exports.ERR_INVALID_SIGNATURE = ERR_INVALID_SIGNATURE;
- exports.ERR_INVALID_VERSION = ERR_INVALID_VERSION;
- exports.ERR_LOCAL_FILE_HEADER_NOT_FOUND = ERR_LOCAL_FILE_HEADER_NOT_FOUND;
- exports.ERR_UNSUPPORTED_COMPRESSION = ERR_UNSUPPORTED_COMPRESSION;
- exports.ERR_UNSUPPORTED_ENCRYPTION = ERR_UNSUPPORTED_ENCRYPTION;
- exports.ERR_UNSUPPORTED_FORMAT = ERR_UNSUPPORTED_FORMAT;
- exports.HttpRangeReader = HttpRangeReader;
- exports.HttpReader = HttpReader;
- exports.Reader = Reader;
- exports.TextReader = TextReader;
- exports.TextWriter = TextWriter;
- exports.Uint8ArrayReader = Uint8ArrayReader;
- exports.Uint8ArrayWriter = Uint8ArrayWriter;
- exports.WritableStreamWriter = WritableStreamWriter;
- exports.Writer = Writer;
- exports.ZipReader = ZipReader;
- exports.ZipWriter = ZipWriter;
- exports.configure = configure;
- exports.getMimeType = getMimeType;
- exports.initShimAsyncCodec = streamCodecShim;
- exports.terminateWorkers = terminateWorkers;
-
- Object.defineProperty(exports, '__esModule', { value: true });
-
- }));