mirror of
https://github.com/jart/cosmopolitan.git
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4a59210008
This change improves the way internal APIs are being hidden behind the `COSMO` define. The cosmo.h header will take care of defining that, so that a separate define statement isn't needed. This change also does a lot more to define which APIs are standard, and which belong to Cosmo.
38 lines
2.3 KiB
C
38 lines
2.3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/zip.internal.h"
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/**
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* Returns compressed size in bytes from zip central directory header.
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*/
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uint64_t GetZipCfileCompressedSize(const uint8_t *z) {
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uint64_t x;
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const uint8_t *p, *pe;
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if ((x = ZIP_CFILE_COMPRESSEDSIZE(z)) == 0xFFFFFFFF) {
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for (p = ZIP_CFILE_EXTRA(z), pe = p + ZIP_CFILE_EXTRASIZE(z); p < pe;
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p += ZIP_EXTRA_SIZE(p)) {
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if (ZIP_EXTRA_HEADERID(p) == kZipExtraZip64 &&
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8 + 8 <= ZIP_EXTRA_CONTENTSIZE(p)) {
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return READ64LE(ZIP_EXTRA_CONTENT(p) + 8);
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}
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}
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}
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return x;
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}
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