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 *
basename(const char * name)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 
63