mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
1837dc2e85
- Introduce path module to redbean - Fix glitch with linenoise printing extra line on eof - Introduce closefrom() and close_range() system calls - Make file descriptor closing more secure in pledge.com
59 lines
3 KiB
C
59 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 "libc/fmt/conv.h"
|
|
#include "libc/str/path.h"
|
|
#include "libc/str/str.h"
|
|
|
|
/**
|
|
* Returns pointer to last filename component in path, e.g.
|
|
*
|
|
* path │ dirname() │ basename()
|
|
* ─────────────────────────────────
|
|
* 0 │ . │ .
|
|
* . │ . │ .
|
|
* .. │ . │ ..
|
|
* / │ / │ /
|
|
* usr │ . │ usr
|
|
* /usr/ │ / │ usr
|
|
* /usr/lib │ /usr │ lib
|
|
*
|
|
* 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 and may be mutated, but not expanded in length
|
|
* @return pointer to path, or inside path, or to a special r/o string
|
|
* @see dirname()
|
|
* @see SUSv2
|
|
*/
|
|
char *basename(char *path) {
|
|
size_t i;
|
|
if (path && *path) {
|
|
i = strlen(path) - 1;
|
|
for (; i && _isdirsep(path[i]); i--) {
|
|
path[i] = 0;
|
|
}
|
|
while (i && !_isdirsep(path[i - 1])) {
|
|
i--;
|
|
}
|
|
return path + i;
|
|
} else {
|
|
return ".";
|
|
}
|
|
}
|