75 lines
1.8 KiB
C
75 lines
1.8 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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#if defined(STDC_HEADERS) || defined(USG)
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#include <string.h>
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#ifndef index
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#define index strchr
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#endif
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#else
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#include <strings.h>
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#endif
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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 = index(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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