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- /* dirname.c -- return all but the last element in a path
- Copyright (C) 1990 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
- the Free Software Foundation; either version 2, 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
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- 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. */
-
- #ifdef HAVE_CONFIG_H
- #if defined (CONFIG_BROKETS)
- /* We use <config.h> instead of "config.h" so that a compilation
- using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
- (which it would do because it found this file in $srcdir). */
- #include <config.h>
- #else
- #include "config.h"
- #endif
- #endif
-
- #ifdef STDC_HEADERS
- #include <stdlib.h>
- #else
- char *malloc ();
- #endif
- #if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
- #include <string.h>
- #ifndef rindex
- #define rindex strrchr
- #endif
- #else
- #include <strings.h>
- #endif
-
- /* Return the leading directories part of PATH,
- allocated with malloc. If out of memory, return 0.
- Assumes that trailing slashes have already been
- removed. */
-
- char *
- dirname (path)
- char *path;
- {
- char *newpath;
- char *slash;
- int length; /* Length of result, not including NUL. */
-
- slash = rindex (path, '/');
- if (slash == 0)
- {
- /* File is in the current directory. */
- path = ".";
- length = 1;
- }
- else
- {
- /* Remove any trailing slashes from the result. */
- while (slash > path && *slash == '/')
- --slash;
-
- length = slash - path + 1;
- }
- newpath = malloc (length + 1);
- if (newpath == 0)
- return 0;
- strncpy (newpath, path, length);
- newpath[length] = 0;
- return newpath;
- }
-