| 1 | 'use strict';
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| 2 |
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| 3 | // (C) 1995-2013 Jean-loup Gailly and Mark Adler
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| 4 | // (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
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| 5 | //
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| 6 | // This software is provided 'as-is', without any express or implied
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| 7 | // warranty. In no event will the authors be held liable for any damages
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| 8 | // arising from the use of this software.
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| 9 | //
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| 10 | // Permission is granted to anyone to use this software for any purpose,
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| 11 | // including commercial applications, and to alter it and redistribute it
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| 12 | // freely, subject to the following restrictions:
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| 13 | //
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| 14 | // 1. The origin of this software must not be misrepresented; you must not
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| 15 | // claim that you wrote the original software. If you use this software
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| 16 | // in a product, an acknowledgment in the product documentation would be
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| 17 | // appreciated but is not required.
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| 18 | // 2. Altered source versions must be plainly marked as such, and must not be
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| 19 | // misrepresented as being the original software.
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| 20 | // 3. This notice may not be removed or altered from any source distribution.
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| 21 |
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| 22 | function GZheader() {
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| 23 | /* true if compressed data believed to be text */
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| 24 | this.text = 0;
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| 25 | /* modification time */
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| 26 | this.time = 0;
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| 27 | /* extra flags (not used when writing a gzip file) */
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| 28 | this.xflags = 0;
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| 29 | /* operating system */
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| 30 | this.os = 0;
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| 31 | /* pointer to extra field or Z_NULL if none */
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| 32 | this.extra = null;
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| 33 | /* extra field length (valid if extra != Z_NULL) */
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| 34 | this.extra_len = 0; // Actually, we don't need it in JS,
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| 35 | // but leave for few code modifications
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| 36 |
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| 37 | //
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| 38 | // Setup limits is not necessary because in js we should not preallocate memory
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| 39 | // for inflate use constant limit in 65536 bytes
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| 40 | //
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| 41 |
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| 42 | /* space at extra (only when reading header) */
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| 43 | // this.extra_max = 0;
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| 44 | /* pointer to zero-terminated file name or Z_NULL */
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| 45 | this.name = '';
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| 46 | /* space at name (only when reading header) */
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| 47 | // this.name_max = 0;
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| 48 | /* pointer to zero-terminated comment or Z_NULL */
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| 49 | this.comment = '';
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| 50 | /* space at comment (only when reading header) */
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| 51 | // this.comm_max = 0;
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| 52 | /* true if there was or will be a header crc */
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| 53 | this.hcrc = 0;
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| 54 | /* true when done reading gzip header (not used when writing a gzip file) */
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| 55 | this.done = false;
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| 56 | }
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| 57 |
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| 58 | module.exports = GZheader;
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