/* dirname.c -- return all but the last element in a file name
- Copyright (C) 1990, 1998, 2000, 2001, 2003, 2004, 2005 Free Software
+ Copyright (C) 1990, 1998, 2000-2001, 2003-2006, 2009-2011 Free Software
Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ 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
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
-#if HAVE_CONFIG_H
-# include <config.h>
-#endif
+#include <config.h>
#include "dirname.h"
+#include <stdlib.h>
#include <string.h>
#include "xalloc.h"
-/* Return the length of `dirname (FILE)', or zero if FILE is
- in the working directory. Works properly even if
- there are trailing slashes (by effectively ignoring them). */
-size_t
-dir_len (char const *file)
-{
- size_t prefix_length = FILE_SYSTEM_PREFIX_LEN (file);
- size_t length;
-
- /* Strip the basename and any redundant slashes before it. */
- for (length = base_name (file) - file; prefix_length < length; length--)
- if (! ISSLASH (file[length - 1]))
- return length;
-
- /* But don't strip the only slash from "/". */
- return prefix_length + ISSLASH (file[prefix_length]);
-}
-
-/* Return the leading directories part of FILE,
- allocated with xmalloc.
- Works properly even if there are trailing slashes
- (by effectively ignoring them). */
+/* Just like mdir_name (dirname-lgpl.c), except, rather than
+ returning NULL upon malloc failure, here, we report the
+ "memory exhausted" condition and exit. */
char *
dir_name (char const *file)
{
- size_t length = dir_len (file);
- bool append_dot = (length == FILE_SYSTEM_PREFIX_LEN (file));
- char *dir = xmalloc (length + append_dot + 1);
- memcpy (dir, file, length);
- if (append_dot)
- dir[length++] = '.';
- dir[length] = 0;
- return dir;
-}
-
-#ifdef TEST_DIRNAME
-/*
-
-Run the test like this (expect no output):
- gcc -DHAVE_CONFIG_H -DTEST_DIRNAME -I.. -O -Wall \
- basename.c dirname.c xmalloc.c error.c
- sed -n '/^BEGIN-DATA$/,/^END-DATA$/p' dirname.c|grep -v DATA|./a.out
-
-If it's been built on a DOS or Windows platforms, run another test like
-this (again, expect no output):
- sed -n '/^BEGIN-DOS-DATA$/,/^END-DOS-DATA$/p' dirname.c|grep -v DATA|./a.out
-
-BEGIN-DATA
-foo//// .
-bar/foo//// bar
-foo/ .
-/ /
-. .
-a .
-END-DATA
-
-BEGIN-DOS-DATA
-c:///// c:/
-c:/ c:/
-c:/. c:/
-c:foo c:.
-c:foo/bar c:foo
-END-DOS-DATA
-
-*/
-
-# define MAX_BUFF_LEN 1024
-# include <stdio.h>
-
-char *program_name;
-
-int
-main (int argc, char *argv[])
-{
- char buff[MAX_BUFF_LEN + 1];
-
- program_name = argv[0];
-
- buff[MAX_BUFF_LEN] = 0;
- while (fgets (buff, MAX_BUFF_LEN, stdin) && buff[0])
- {
- char file[MAX_BUFF_LEN];
- char expected_result[MAX_BUFF_LEN];
- char const *result;
- sscanf (buff, "%s %s", file, expected_result);
- result = dir_name (file);
- if (strcmp (result, expected_result))
- printf ("%s: got %s, expected %s\n", file, result, expected_result);
- }
- return 0;
+ char *result = mdir_name (file);
+ if (!result)
+ xalloc_die ();
+ return result;
}
-#endif