/* basename.c -- return the last element in a path
- Copyright (C) 1990, 1998 Free Software Foundation, Inc.
+ Copyright (C) 1990, 1998, 1999 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#endif
#ifndef FILESYSTEM_PREFIX_LEN
-# define FILESYSTEM_PREFIX_LEN(f) 0
+# define FILESYSTEM_PREFIX_LEN(Filename) 0
+#endif
+
+#ifndef PARAMS
+# if defined PROTOTYPES || (defined __STDC__ && __STDC__)
+# define PARAMS(Args) Args
+# else
+# define PARAMS(Args) ()
+# endif
#endif
#ifndef ISSLASH
-# define ISSLASH(c) ((c) == '/')
+# define ISSLASH(C) ((C) == '/')
#endif
+char *base_name PARAMS ((char const *name));
+
/* In general, we can't use the builtin `basename' function if available,
since it has different meanings in different environments.
- In some environments the builtin `basename' modifies its argument. */
+ In some environments the builtin `basename' modifies its argument.
+ If NAME is all slashes, be sure to return `/'. */
char *
-base_name (name)
- char const *name;
+base_name (char const *name)
{
char const *base = name += FILESYSTEM_PREFIX_LEN (name);
+ int all_slashes = 1;
+ char const *p;
+
+ for (p = name; *p; p++)
+ {
+ if (ISSLASH (*p))
+ base = p + 1;
+ else
+ all_slashes = 0;
+ }
- for (; *name; name++)
- if (ISSLASH (*name))
- base = name + 1;
+ /* If NAME is all slashes, arrange to return `/'. */
+ if (*base == '\0' && ISSLASH (*name) && all_slashes)
+ --base;
return (char *) base;
}