Darren Tucker | ad1dada | 2005-11-10 16:42:51 +1100 | [diff] [blame] | 1 | /* $OpenBSD: basename.c,v 1.14 2005/08/08 08:05:33 espie Exp $ */ |
Damien Miller | 8d8168a | 2003-02-24 12:55:55 +1100 | [diff] [blame] | 2 | |
| 3 | /* |
Darren Tucker | ad1dada | 2005-11-10 16:42:51 +1100 | [diff] [blame] | 4 | * Copyright (c) 1997, 2004 Todd C. Miller <Todd.Miller@courtesan.com> |
Damien Miller | 8d8168a | 2003-02-24 12:55:55 +1100 | [diff] [blame] | 5 | * |
Ben Lindstrom | af4a6c3 | 2003-08-25 01:10:51 +0000 | [diff] [blame] | 6 | * Permission to use, copy, modify, and distribute this software for any |
| 7 | * purpose with or without fee is hereby granted, provided that the above |
| 8 | * copyright notice and this permission notice appear in all copies. |
Damien Miller | 8d8168a | 2003-02-24 12:55:55 +1100 | [diff] [blame] | 9 | * |
Ben Lindstrom | af4a6c3 | 2003-08-25 01:10:51 +0000 | [diff] [blame] | 10 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 11 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 12 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 13 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 14 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 15 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 16 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
Damien Miller | 8d8168a | 2003-02-24 12:55:55 +1100 | [diff] [blame] | 17 | */ |
Damien Miller | 8d8168a | 2003-02-24 12:55:55 +1100 | [diff] [blame] | 18 | |
Darren Tucker | 7f24a0e | 2005-11-10 16:18:56 +1100 | [diff] [blame] | 19 | /* OPENBSD ORIGINAL: lib/libc/gen/basename.c */ |
| 20 | |
Ben Lindstrom | af4a6c3 | 2003-08-25 01:10:51 +0000 | [diff] [blame] | 21 | #include "includes.h" |
| 22 | #ifndef HAVE_BASENAME |
Darren Tucker | fe408b4 | 2006-08-24 19:41:03 +1000 | [diff] [blame] | 23 | #include <errno.h> |
Damien Miller | 62da44f | 2006-07-24 15:08:35 +1000 | [diff] [blame] | 24 | #include <string.h> |
Damien Miller | 8d8168a | 2003-02-24 12:55:55 +1100 | [diff] [blame] | 25 | |
Damien Miller | 8d8168a | 2003-02-24 12:55:55 +1100 | [diff] [blame] | 26 | char * |
| 27 | basename(const char *path) |
| 28 | { |
| 29 | static char bname[MAXPATHLEN]; |
Darren Tucker | ad1dada | 2005-11-10 16:42:51 +1100 | [diff] [blame] | 30 | size_t len; |
| 31 | const char *endp, *startp; |
Damien Miller | 8d8168a | 2003-02-24 12:55:55 +1100 | [diff] [blame] | 32 | |
| 33 | /* Empty or NULL string gets treated as "." */ |
| 34 | if (path == NULL || *path == '\0') { |
Darren Tucker | ad1dada | 2005-11-10 16:42:51 +1100 | [diff] [blame] | 35 | bname[0] = '.'; |
| 36 | bname[1] = '\0'; |
| 37 | return (bname); |
Damien Miller | 8d8168a | 2003-02-24 12:55:55 +1100 | [diff] [blame] | 38 | } |
| 39 | |
Darren Tucker | ad1dada | 2005-11-10 16:42:51 +1100 | [diff] [blame] | 40 | /* Strip any trailing slashes */ |
Damien Miller | 8d8168a | 2003-02-24 12:55:55 +1100 | [diff] [blame] | 41 | endp = path + strlen(path) - 1; |
| 42 | while (endp > path && *endp == '/') |
| 43 | endp--; |
| 44 | |
Darren Tucker | ad1dada | 2005-11-10 16:42:51 +1100 | [diff] [blame] | 45 | /* All slashes becomes "/" */ |
Damien Miller | 8d8168a | 2003-02-24 12:55:55 +1100 | [diff] [blame] | 46 | if (endp == path && *endp == '/') { |
Darren Tucker | ad1dada | 2005-11-10 16:42:51 +1100 | [diff] [blame] | 47 | bname[0] = '/'; |
| 48 | bname[1] = '\0'; |
| 49 | return (bname); |
Damien Miller | 8d8168a | 2003-02-24 12:55:55 +1100 | [diff] [blame] | 50 | } |
| 51 | |
| 52 | /* Find the start of the base */ |
| 53 | startp = endp; |
| 54 | while (startp > path && *(startp - 1) != '/') |
| 55 | startp--; |
| 56 | |
Darren Tucker | ad1dada | 2005-11-10 16:42:51 +1100 | [diff] [blame] | 57 | len = endp - startp + 1; |
| 58 | if (len >= sizeof(bname)) { |
Damien Miller | 8d8168a | 2003-02-24 12:55:55 +1100 | [diff] [blame] | 59 | errno = ENAMETOOLONG; |
Darren Tucker | ad1dada | 2005-11-10 16:42:51 +1100 | [diff] [blame] | 60 | return (NULL); |
Damien Miller | 8d8168a | 2003-02-24 12:55:55 +1100 | [diff] [blame] | 61 | } |
Darren Tucker | ad1dada | 2005-11-10 16:42:51 +1100 | [diff] [blame] | 62 | memcpy(bname, startp, len); |
| 63 | bname[len] = '\0'; |
| 64 | return (bname); |
Damien Miller | 8d8168a | 2003-02-24 12:55:55 +1100 | [diff] [blame] | 65 | } |
| 66 | |
| 67 | #endif /* !defined(HAVE_BASENAME) */ |