mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 11:37:35 +00:00
394d998315
At least in neovim, `│vi:` is not recognized as a modeline because it has no preceding whitespace. After fixing this, opening a file yields an error because `net` is not an option. (`noet`, however, is.)
42 lines
2.5 KiB
C
42 lines
2.5 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│ vi: set noet ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2021 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ Permission to use, copy, modify, and/or distribute this software for │
|
|
│ any purpose with or without fee is hereby granted, provided that the │
|
|
│ above copyright notice and this permission notice appear in all copies. │
|
|
│ │
|
|
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
|
|
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
|
|
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
|
|
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
|
|
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
|
|
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
|
|
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
|
|
│ PERFORMANCE OF THIS SOFTWARE. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/zip.internal.h"
|
|
|
|
/**
|
|
* Returns uncompressed size in bytes from zip local file header.
|
|
*/
|
|
int64_t GetZipLfileUncompressedSize(const uint8_t *z) {
|
|
if (ZIP_LFILE_UNCOMPRESSEDSIZE(z) != 0xFFFFFFFFu) {
|
|
return ZIP_LFILE_UNCOMPRESSEDSIZE(z);
|
|
}
|
|
const uint8_t *p = ZIP_LFILE_EXTRA(z);
|
|
const uint8_t *pe = p + ZIP_LFILE_EXTRASIZE(z);
|
|
for (; p + ZIP_EXTRA_SIZE(p) <= pe; p += ZIP_EXTRA_SIZE(p)) {
|
|
if (ZIP_EXTRA_HEADERID(p) == kZipExtraZip64) {
|
|
int offset = 0;
|
|
if (ZIP_LFILE_COMPRESSEDSIZE(z) == 0xFFFFFFFFu) {
|
|
offset += 8;
|
|
}
|
|
if (offset + 8 <= ZIP_EXTRA_CONTENTSIZE(p)) {
|
|
return ZIP_READ64(ZIP_EXTRA_CONTENT(p) + offset);
|
|
}
|
|
}
|
|
}
|
|
return -1;
|
|
}
|