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2b757d51 NB |
1 | /* Libiberty basename. Like basename, but is not overridden by the |
2 | system C library. | |
53309d5c | 3 | Copyright (C) 2001, 2002 Free Software Foundation, Inc. |
2b757d51 NB |
4 | |
5 | This file is part of the libiberty library. | |
6 | Libiberty is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Library General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2 of the License, or (at your option) any later version. | |
10 | ||
11 | Libiberty is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Library General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Library General Public | |
17 | License along with libiberty; see the file COPYING.LIB. If | |
18 | not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | /* | |
aac04c15 DD |
22 | |
23 | @deftypefn Replacement {const char*} lbasename (const char *@var{name}) | |
24 | ||
25 | Given a pointer to a string containing a typical pathname | |
26 | (@samp{/usr/src/cmd/ls/ls.c} for example), returns a pointer to the | |
27 | last component of the pathname (@samp{ls.c} in this case). The | |
28 | returned pointer is guaranteed to lie within the original | |
29 | string. This latter fact is not true of many vendor C | |
30 | libraries, which return special strings or modify the passed | |
31 | strings for particular input. | |
32 | ||
33 | In particular, the empty string returns the same empty string, | |
34 | and a path ending in @code{/} returns the empty string after it. | |
35 | ||
36 | @end deftypefn | |
37 | ||
2b757d51 NB |
38 | */ |
39 | ||
40 | #include "ansidecl.h" | |
41 | #include "libiberty.h" | |
42 | #include "safe-ctype.h" | |
43 | ||
44 | #ifndef DIR_SEPARATOR | |
45 | # define DIR_SEPARATOR '/' | |
46 | #endif | |
47 | ||
48 | #if defined (_WIN32) || defined (__MSDOS__) \ | |
49 | || defined (__DJGPP__) || defined (__OS2__) | |
50 | # define HAVE_DOS_BASED_FILE_SYSTEM | |
51 | # ifndef DIR_SEPARATOR_2 | |
52 | # define DIR_SEPARATOR_2 '\\' | |
53 | # endif | |
54 | #endif | |
55 | ||
53309d5c DR |
56 | #ifndef DIR_SEPARATOR_2 |
57 | # define IS_DIR_SEPARATOR(ch) ((ch) == DIR_SEPARATOR) | |
2b757d51 | 58 | #else |
53309d5c | 59 | # define IS_DIR_SEPARATOR(ch) \ |
2b757d51 | 60 | (((ch) == DIR_SEPARATOR) || ((ch) == DIR_SEPARATOR_2)) |
2b757d51 NB |
61 | #endif |
62 | ||
0ef5547d | 63 | const char * |
2b757d51 NB |
64 | lbasename (name) |
65 | const char *name; | |
66 | { | |
67 | const char *base; | |
68 | ||
69 | #if defined (HAVE_DOS_BASED_FILE_SYSTEM) | |
70 | /* Skip over a possible disk name. */ | |
71 | if (ISALPHA (name[0]) && name[1] == ':') | |
72 | name += 2; | |
73 | #endif | |
74 | ||
75 | for (base = name; *name; name++) | |
76 | if (IS_DIR_SEPARATOR (*name)) | |
77 | base = name + 1; | |
78 | ||
0ef5547d | 79 | return base; |
2b757d51 | 80 | } |