/* * Copyright 1999 by The XFree86 Project, Inc. * All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject * to the following conditions: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution, and in the same place and form as other copyright, * license and disclaimer information. * * 3. The end-user documentation included with the redistribution, * if any, must include the following acknowledgment: "This product * includes software developed by The XFree86 Project, Inc * (http://www.xfree86.org/) and its contributors", in the same * place and form as other third-party acknowledgments. Alternately, * this acknowledgment may appear in the software itself, in the * same form and location as other such third-party acknowledgments. * * 4. Except as contained in this notice, the name of The XFree86 * Project, Inc shall not be used in advertising or otherwise to * promote the sale, use or other dealings in this Software without * prior written authorization from The XFree86 Project, Inc. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE XFREE86 PROJECT, INC OR ITS CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* $XFree86: xc/config/util/revpath.c,v 1.3 2004/02/13 23:58:28 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); }