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81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/* strippath.c -- remove unnecessary components from a path specifier
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Copyright (C) 1992 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#if STDC_HEADERS || HAVE_STRING_H
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#include <string.h>
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/* An ANSI string.h and pre-ANSI memory.h might conflict. */
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#if !STDC_HEADERS && HAVE_MEMORY_H
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#include <memory.h>
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#endif /* not STDC_HEADERS and HAVE_MEMORY_H */
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#else /* not STDC_HJEADERS and not HAVE_STRING_H */
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#include <strings.h>
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/* memory.h and strings.h conflict on some systems. */
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#endif /* not STDC_HEADERS and not HAVE_STRING_H */
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#include <stdio.h>
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#if __STDC__
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static void remove_component(char *beginc, char *endc);
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void strip_trailing_slashes(char *path);
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#else
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static void remove_component();
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void strip_trailing_slashes();
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#endif /* __STDC__ */
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/* Remove unnecessary components from PATH. */
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void
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strip_path (path)
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char *path;
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{
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int stripped = 0;
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char *cp, *slash;
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for (cp = path; (slash = strchr(cp, '/')) != NULL; cp = slash)
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{
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*slash = '\0';
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if ((!*cp && (cp != path || stripped)) ||
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strcmp(cp, ".") == 0 || strcmp(cp, "/") == 0)
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{
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stripped = 1;
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remove_component(cp, slash);
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slash = cp;
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}
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else
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{
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*slash++ = '/';
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}
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}
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strip_trailing_slashes(path);
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}
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/* Remove the component delimited by BEGINC and ENDC from the path */
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static void
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remove_component (beginc, endc)
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char *beginc;
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char *endc;
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{
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for (endc++; *endc; endc++)
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*beginc++ = *endc;
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*beginc = '\0';
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}
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