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64 lines
1.8 KiB
64 lines
1.8 KiB
/* $OpenBSD: basename.c,v 1.11 2003/06/17 21:56:23 millert Exp $ */ |
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/* |
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* Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#ifndef lint |
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static char rcsid[] = "$OpenBSD: basename.c,v 1.11 2003/06/17 21:56:23 millert Exp $"; |
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#endif /* not lint */ |
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#include <string.h> |
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#ifdef HAVE_SYS_PARAM_H |
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#include <sys/param.h> |
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#elif !defined(MAXPATHLEN) |
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#define MAXPATHLEN 1024 |
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#endif |
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char * |
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basename(const char *path) |
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{ |
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static char bname[MAXPATHLEN]; |
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register const char *endp, *startp; |
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/* Empty or NULL string gets treated as "." */ |
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if (path == NULL || *path == '\0') { |
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(void)strcpy(bname, "."); |
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return(bname); |
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} |
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/* Strip trailing slashes */ |
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endp = path + strlen(path) - 1; |
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while (endp > path && *endp == '/') |
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endp--; |
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/* All slashes become "/" */ |
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if (endp == path && *endp == '/') { |
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(void)strcpy(bname, "/"); |
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return(bname); |
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} |
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/* Find the start of the base */ |
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startp = endp; |
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while (startp > path && *(startp - 1) != '/') |
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startp--; |
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if (endp - startp + 2 > sizeof(bname)) { |
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return(NULL); |
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} |
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(void)strncpy(bname, startp, endp - startp + 1); |
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bname[endp - startp + 1] = '\0'; |
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return(bname); |
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}
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