- char const *dirbase = base_name (dir);
- size_t dirbaselen = base_len (dirbase);
- size_t dirlen = dirbase - dir + dirbaselen;
- size_t needs_separator = (dirbaselen && ! ISSLASH (dirbase[dirbaselen - 1]));
-
- char const *base = longest_relative_suffix (abase);
- size_t baselen = strlen (base);
-
- char *p_concat = xmalloc (dirlen + needs_separator + baselen + 1);
- char *p;
-
- p = mempcpy (p_concat, dir, dirlen);
- *p = DIRECTORY_SEPARATOR;
- p += needs_separator;
-
- if (base_in_result)
- *base_in_result = p - IS_ABSOLUTE_FILE_NAME (abase);
-
- p = mempcpy (p, base, baselen);
- *p = '\0';
-
- return p_concat;
-}
-
-#ifdef TEST_FILE_NAME_CONCAT
-# include <stdlib.h>
-# include <stdio.h>
-int
-main ()
-{
- 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);