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