51 lines
2.7 KiB
C
51 lines
2.7 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 "libc/conv/conv.h"
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#include "libc/conv/isslash.internal.h"
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/**
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* Returns pointer to last filename component in path.
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*
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* Both / and \ are are considered valid component separators on all
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* platforms. Trailing slashes are ignored. We don't grant special
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* consideration to things like foo/., c:/, \\?\Volume, etc.
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*
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* @param path is UTF-8 path
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* @param size is byte length of path
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* @return pointer inside path or path itself
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*/
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textstartup char *basename_n(const char *path, size_t size) {
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size_t i, l;
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if (size) {
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if (isslash(path[size - 1])) {
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l = size - 1;
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while (l && isslash(path[l - 1])) --l;
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if (!l) return (/*unconst*/ char *)&path[size - 1];
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size = l;
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}
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for (i = size; i > 0; --i) {
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if (isslash(path[i - 1])) {
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return (/*unconst*/ char *)&path[i];
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}
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}
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}
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return (/*unconst*/ char *)path;
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}
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