/* basename.c -- return the last element in a path
- Copyright (C) 1990 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
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ along with this program; if not, write to the Free Software Foundation,
+ Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-#ifdef HAVE_CONFIG_H
-#include <config.h>
+#if HAVE_CONFIG_H
+# include <config.h>
#endif
-/* Return NAME with any leading path stripped off.
- Don't use strrchr/rindex. */
+#ifndef FILESYSTEM_PREFIX_LEN
+# 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) == '/')
+#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.
+ If NAME is all slashes, be sure to return `/'. */
char *
-basename (name)
- const char *name;
+base_name (char const *name)
{
- const char *base = name;
+ char const *base = name += FILESYSTEM_PREFIX_LEN (name);
+ int all_slashes = 1;
+ char const *p;
- while (*name)
+ for (p = name; *p; p++)
{
- if (*name == '/')
- base = name + 1;
- ++name;
+ if (ISSLASH (*p))
+ base = p + 1;
+ else
+ all_slashes = 0;
}
+
+ /* If NAME is all slashes, arrange to return `/'. */
+ if (*base == '\0' && ISSLASH (*name) && all_slashes)
+ --base;
+
return (char *) base;
}