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- /* strippath.c -- remove unnecessary components from a path specifier
- Copyright (C) 1992 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
- #include "config.h"
- #endif
-
- #if STDC_HEADERS || HAVE_STRING_H
- #include <string.h>
- /* An ANSI string.h and pre-ANSI memory.h might conflict. */
- #if !STDC_HEADERS && HAVE_MEMORY_H
- #include <memory.h>
- #endif /* not STDC_HEADERS and HAVE_MEMORY_H */
- #else /* not STDC_HJEADERS and not HAVE_STRING_H */
- #include <strings.h>
- /* memory.h and strings.h conflict on some systems. */
- #endif /* not STDC_HEADERS and not HAVE_STRING_H */
-
- #include <stdio.h>
-
- #if __STDC__
- static void remove_component(char *beginc, char *endc);
- void strip_trailing_slashes(char *path);
- #else
- static void remove_component();
- void strip_trailing_slashes();
- #endif /* __STDC__ */
-
- /* Remove unnecessary components from PATH. */
-
- void
- strip_path (path)
- char *path;
- {
- int stripped = 0;
- char *cp, *slash;
-
- for (cp = path; (slash = strchr(cp, '/')) != NULL; cp = slash)
- {
- *slash = '\0';
- if ((!*cp && (cp != path || stripped)) ||
- strcmp(cp, ".") == 0 || strcmp(cp, "/") == 0)
- {
- stripped = 1;
- remove_component(cp, slash);
- slash = cp;
- }
- else
- {
- *slash++ = '/';
- }
- }
- strip_trailing_slashes(path);
- }
-
- /* Remove the component delimited by BEGINC and ENDC from the path */
-
- static void
- remove_component (beginc, endc)
- char *beginc;
- char *endc;
- {
- for (endc++; *endc; endc++)
- *beginc++ = *endc;
- *beginc = '\0';
- }
-