Mercurial > molko
view libmlk-util/mlk/util/openbsd/basename.c @ 524:c2124ecb2423
util: prefix PATH_MAX to MLK_PATH_MAX
author | David Demelier <markand@malikania.fr> |
---|---|
date | Sat, 04 Mar 2023 19:22:06 +0100 |
parents | 4607eea0eabc |
children | a2443afe8a1f |
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/* $OpenBSD: basename.c,v 1.17 2020/10/20 19:30:14 naddy Exp $ */ /* * Copyright (c) 1997, 2004 Todd C. Miller <millert@openbsd.org> * * Permission to use, copy, modify, and 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 <errno.h> #include <limits.h> #include <string.h> #include <mlk/util/util.h> char * mlk_util_basename(char *path) { static char bname[MLK_PATH_MAX]; size_t len; const char *endp, *startp; /* Empty or NULL string gets treated as "." */ if (path == NULL || *path == '\0') { bname[0] = '.'; bname[1] = '\0'; return (bname); } /* Strip any trailing slashes */ endp = path + strlen(path) - 1; while (endp > path && *endp == '/') endp--; /* All slashes becomes "/" */ if (endp == path && *endp == '/') { bname[0] = '/'; bname[1] = '\0'; return (bname); } /* Find the start of the base */ startp = endp; while (startp > path && *(startp - 1) != '/') startp--; len = endp - startp + 1; if (len >= sizeof(bname)) { #if defined(ENAMETOOLONG) errno = ENAMETOOLONG; #endif return (NULL); } memcpy(bname, startp, len); bname[len] = '\0'; return (bname); }