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