/* basename.c -- return the last element in a path
- Copyright (C) 1990 Free Software Foundation, Inc.
+
+ Copyright (C) 1990, 1998, 1999, 2000, 2001, 2003 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
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
+#if HAVE_CONFIG_H
# include <config.h>
#endif
-/* Return NAME with any leading path stripped off.
- Don't use strrchr/rindex. */
+#include "dirname.h"
+#include <string.h>
+
+/* 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.
+
+ Return the address of the last file name component of NAME. If
+ NAME has no file name components because it is all slashes, return
+ NAME if it is empty, the address of its last slash otherwise. */
char *
-basename (name)
- const char *name;
+base_name (char const *name)
{
- const char *base = name;
+ char const *base = name + FILESYSTEM_PREFIX_LEN (name);
+ char const *p;
- while (*name)
+ for (p = base; *p; p++)
{
- if (*name == '/')
- base = name + 1;
- ++name;
+ if (ISSLASH (*p))
+ {
+ /* Treat multiple adjacent slashes like a single slash. */
+ do p++;
+ while (ISSLASH (*p));
+
+ /* If the file name ends in slash, use the trailing slash as
+ the basename if no non-slashes have been found. */
+ if (! *p)
+ {
+ if (ISSLASH (*base))
+ base = p - 1;
+ break;
+ }
+
+ /* *P is a non-slash preceded by a slash. */
+ base = p;
+ }
}
+
return (char *) base;
}
+
+/* Return the length of of the basename NAME. Typically NAME is the
+ value returned by base_name. Act like strlen (NAME), except omit
+ redundant trailing slashes. */
+
+size_t
+base_len (char const *name)
+{
+ size_t len;
+
+ for (len = strlen (name); 1 < len && ISSLASH (name[len - 1]); len--)
+ continue;
+
+ return len;
+}