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/*
* Copyright 1999 by The XFree86 Project, Inc.
*/
/* $XFree86: xc/config/util/revpath.c,v 1.2 1999/02/01 11:55:49 dawes Exp $ */
/*
* Reverse a pathname. It returns a relative path that can be used to undo
* 'cd argv[1]'.
*
* It is impossible to do this in general, but this handles the cases that
* come up in imake. Maybe imake should use an absolute path for $(TOP)
* instead of a relative path so that this problem can be avoided?
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int
main(int argc, char *argv[])
{
int levels = 0;
char *p;
/* Silently ignore invalid usage */
if (argc != 2)
exit(0);
/* Split the path and count the levels */
p = strtok(argv[1], "/");
while (p) {
if (strcmp(p, ".") == 0)
;
else if (strcmp(p, "..") == 0)
levels--;
else
levels++;
p = strtok(NULL, "/");
}
while (levels-- > 0)
printf("../");
printf("\n");
exit(0);
}
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