41 lines
2.6 KiB
C
41 lines
2.6 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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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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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.h"
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#include "libc/zipos/zipos.internal.h"
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ssize_t __zipos_find(struct Zipos *zipos, const struct ZiposUri *name) {
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size_t i, cf;
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assert(ZIP_CDIR_MAGIC(zipos->cdir) == kZipCdirHdrMagic);
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for (i = 0, cf = ZIP_CDIR_OFFSET(zipos->cdir);
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i < ZIP_CDIR_RECORDS(zipos->cdir);
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++i, cf += ZIP_CFILE_HDRSIZE(zipos->map + cf)) {
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assert(ZIP_CFILE_MAGIC(zipos->map + cf) == kZipCfileHdrMagic);
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if (name->len == ZIP_CFILE_NAMESIZE(zipos->map + cf) &&
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memcmp(name->path, ZIP_CFILE_NAME(zipos->map + cf), name->len) == 0) {
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return cf;
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}
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}
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return -1;
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}
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