mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 11:37:35 +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.
54 lines
3 KiB
C
54 lines
3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 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 "ape/relocations.h"
|
|
#include "libc/assert.h"
|
|
#include "libc/runtime/runtime.h"
|
|
#include "libc/str/str.h"
|
|
#include "libc/zip.internal.h"
|
|
#include "libc/zipos/zipos.internal.h"
|
|
|
|
// TODO(jart): improve time complexity here
|
|
|
|
ssize_t __zipos_find(struct Zipos *zipos, const struct ZiposUri *name) {
|
|
const char *zname;
|
|
size_t i, n, c, znamesize;
|
|
if (!name->len) {
|
|
return 0;
|
|
}
|
|
c = GetZipCdirOffset(zipos->cdir);
|
|
n = GetZipCdirRecords(zipos->cdir);
|
|
for (i = 0; i < n; ++i, c += ZIP_CFILE_HDRSIZE(zipos->map + c)) {
|
|
_npassert(ZIP_CFILE_MAGIC(zipos->map + c) == kZipCfileHdrMagic);
|
|
zname = ZIP_CFILE_NAME(zipos->map + c);
|
|
znamesize = ZIP_CFILE_NAMESIZE(zipos->map + c);
|
|
if ((name->len == znamesize && !memcmp(name->path, zname, name->len)) ||
|
|
(name->len + 1 == znamesize && !memcmp(name->path, zname, name->len) &&
|
|
zname[name->len] == '/')) {
|
|
return c;
|
|
} else if ((name->len < znamesize &&
|
|
!memcmp(name->path, zname, name->len) &&
|
|
zname[name->len - 1] == '/') ||
|
|
(name->len + 1 < znamesize &&
|
|
!memcmp(name->path, zname, name->len) &&
|
|
zname[name->len] == '/')) {
|
|
return 0;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|