IABSD.fr/xenocara/util/imake/revpath.c

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  Commit

• Author : matthieu
  Date : 2006-11-25 16:15:45
  Hash : 782466d3
  Message : import from X.Org 7.2RC2

• util/imake/revpath.c

• /*
   * 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);
  }