mirror of
https://github.com/jart/cosmopolitan.git
synced 2024-05-18 03:22:40 +00:00
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.
55 lines
3 KiB
C
55 lines
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 2020 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 "ape/relocations.h"
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#include "libc/assert.h"
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#include "libc/runtime/runtime.h"
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#include "libc/str/str.h"
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#include "libc/zip.internal.h"
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#include "libc/zipos/zipos.internal.h"
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// TODO(jart): improve time complexity here
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ssize_t __zipos_find(struct Zipos *zipos, const struct ZiposUri *name) {
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const char *zname;
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size_t i, n, c, znamesize;
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if (!name->len) {
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return 0;
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}
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c = GetZipCdirOffset(zipos->cdir);
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n = GetZipCdirRecords(zipos->cdir);
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for (i = 0; i < n; ++i, c += ZIP_CFILE_HDRSIZE(zipos->map + c)) {
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_npassert(ZIP_CFILE_MAGIC(zipos->map + c) == kZipCfileHdrMagic);
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zname = ZIP_CFILE_NAME(zipos->map + c);
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znamesize = ZIP_CFILE_NAMESIZE(zipos->map + c);
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if ((name->len == znamesize && !memcmp(name->path, zname, name->len)) ||
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(name->len + 1 == znamesize && !memcmp(name->path, zname, name->len) &&
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zname[name->len] == '/')) {
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return c;
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} else if ((name->len < znamesize &&
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!memcmp(name->path, zname, name->len) &&
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zname[name->len - 1] == '/') ||
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(name->len + 1 < znamesize &&
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!memcmp(name->path, zname, name->len) &&
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zname[name->len] == '/')) {
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return 0;
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}
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}
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return -1;
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}
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