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comparison libiberty/basename.c @ 0:a06113de4d67

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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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-1:000000000000 0:a06113de4d67
1 /* Return the basename of a pathname.
2 This file is in the public domain. */
3
4 /*
5
6 @deftypefn Supplemental char* basename (const char *@var{name})
7
8 Returns a pointer to the last component of pathname @var{name}.
9 Behavior is undefined if the pathname ends in a directory separator.
10
11 @end deftypefn
12
13 */
14
15 #ifdef HAVE_CONFIG_H
16 #include "config.h"
17 #endif
18 #include "ansidecl.h"
19 #include "libiberty.h"
20 #include "safe-ctype.h"
21
22 #ifndef DIR_SEPARATOR
23 #define DIR_SEPARATOR '/'
24 #endif
25
26 #if defined (_WIN32) || defined (__MSDOS__) || defined (__DJGPP__) || \
27 defined (__OS2__)
28 #define HAVE_DOS_BASED_FILE_SYSTEM
29 #ifndef DIR_SEPARATOR_2
30 #define DIR_SEPARATOR_2 '\\'
31 #endif
32 #endif
33
34 /* Define IS_DIR_SEPARATOR. */
35 #ifndef DIR_SEPARATOR_2
36 # define IS_DIR_SEPARATOR(ch) ((ch) == DIR_SEPARATOR)
37 #else /* DIR_SEPARATOR_2 */
38 # define IS_DIR_SEPARATOR(ch) \
39 (((ch) == DIR_SEPARATOR) || ((ch) == DIR_SEPARATOR_2))
40 #endif /* DIR_SEPARATOR_2 */
41
42 char *
43 basename (const char *name)
44 {
45 const char *base;
46
47 #if defined (HAVE_DOS_BASED_FILE_SYSTEM)
48 /* Skip over the disk name in MSDOS pathnames. */
49 if (ISALPHA (name[0]) && name[1] == ':')
50 name += 2;
51 #endif
52
53 for (base = name; *name; name++)
54 {
55 if (IS_DIR_SEPARATOR (*name))
56 {
57 base = name + 1;
58 }
59 }
60 return (char *) base;
61 }
62