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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';
}
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