/* Concatenate two arbitrary file names.
- Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
- 2005, 2006 Free Software Foundation, Inc.
+ Copyright (C) 1996-2007 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/>. */
/* Written by Jim Meyering. */
/* Specification. */
#include "filenamecat.h"
+#include <stdlib.h>
#include <string.h>
#include "dirname.h"
set *BASE_IN_RESULT to point to the sole corresponding slash that
is copied into the result buffer.
- Report an error if memory is exhausted. */
+ Return NULL if malloc fails. */
char *
-file_name_concat (char const *dir, char const *abase, char **base_in_result)
+mfile_name_concat (char const *dir, char const *abase, char **base_in_result)
{
char const *dirbase = last_component (dir);
size_t dirbaselen = base_len (dirbase);
char const *base = longest_relative_suffix (abase);
size_t baselen = strlen (base);
- char *p_concat = xmalloc (dirlen + needs_separator + baselen + 1);
+ char *p_concat = malloc (dirlen + needs_separator + baselen + 1);
char *p;
+ if (p_concat == NULL)
+ return NULL;
+
p = mempcpy (p_concat, dir, dirlen);
*p = DIRECTORY_SEPARATOR;
p += needs_separator;
return p_concat;
}
-#ifdef TEST_FILE_NAME_CONCAT
-# include <stdlib.h>
-# include <stdio.h>
-int
-main ()
+/* Just like mfile_name_concat, above, except, rather than
+ returning NULL upon malloc failure, here, we report the
+ "memory exhausted" condition and exit. */
+
+char *
+file_name_concat (char const *dir, char const *abase, char **base_in_result)
{
- static char const *const tests[][3] =
- {
- {"a", "b", "a/b"},
- {"a/", "b", "a/b"},
- {"a/", "/b", "a/b"},
- {"a", "/b", "a/b"},
-
- {"/", "b", "/b"},
- {"/", "/b", "/b"},
- {"/", "/", "/"},
- {"a", "/", "a/"}, /* this might deserve a diagnostic */
- {"/a", "/", "/a/"}, /* this might deserve a diagnostic */
- {"a", "//b", "a/b"},
- };
- size_t i;
- bool fail = false;
- for (i = 0; i < sizeof tests / sizeof tests[0]; i++)
- {
- char *base_in_result;
- char const *const *t = tests[i];
- char *res = file_name_concat (t[0], t[1], &base_in_result);
- if (strcmp (res, t[2]) != 0)
- {
- printf ("got %s, expected %s\n", res, t[2]);
- fail = true;
- }
- }
- exit (fail ? EXIT_FAILURE : EXIT_SUCCESS);
+ char *p = mfile_name_concat (dir, abase, base_in_result);
+ if (p == NULL)
+ xalloc_die ();
+ return p;
}
-#endif