Initialise value to zero to avoid a compile time warning.
[binutils.git] / libiberty / basename.c
blob037a90601457e1ca3ae82f29f561b8569ed8039c
1 /* Return the basename of a pathname.
2 This file is in the public domain. */
4 /*
6 @deftypefn Supplemental char* basename (const char *@var{name})
8 Returns a pointer to the last component of pathname @var{name}.
9 Behavior is undefined if the pathname ends in a directory separator.
11 @end deftypefn
15 #include "ansidecl.h"
16 #include "libiberty.h"
17 #include "safe-ctype.h"
19 #ifndef DIR_SEPARATOR
20 #define DIR_SEPARATOR '/'
21 #endif
23 #if defined (_WIN32) || defined (__MSDOS__) || defined (__DJGPP__) || \
24 defined (__OS2__)
25 #define HAVE_DOS_BASED_FILE_SYSTEM
26 #ifndef DIR_SEPARATOR_2
27 #define DIR_SEPARATOR_2 '\\'
28 #endif
29 #endif
31 /* Define IS_DIR_SEPARATOR. */
32 #ifndef DIR_SEPARATOR_2
33 # define IS_DIR_SEPARATOR(ch) ((ch) == DIR_SEPARATOR)
34 #else /* DIR_SEPARATOR_2 */
35 # define IS_DIR_SEPARATOR(ch) \
36 (((ch) == DIR_SEPARATOR) || ((ch) == DIR_SEPARATOR_2))
37 #endif /* DIR_SEPARATOR_2 */
39 char *
40 basename (const char *name)
42 const char *base;
44 #if defined (HAVE_DOS_BASED_FILE_SYSTEM)
45 /* Skip over the disk name in MSDOS pathnames. */
46 if (ISALPHA (name[0]) && name[1] == ':')
47 name += 2;
48 #endif
50 for (base = name; *name; name++)
52 if (IS_DIR_SEPARATOR (*name))
54 base = name + 1;
57 return (char *) base;