1  /* Test program for dirname function a la XPG.
       2     Copyright (C) 1996-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #define _GNU_SOURCE	1
      20  #include <libgen.h>
      21  #include <stdio.h>
      22  #include <string.h>
      23  
      24  
      25  static int
      26  test (const char *input, const char *result)
      27  {
      28    int retval;
      29    char *cp;
      30    cp = strdupa (input);
      31    cp = dirname (cp);
      32    retval = strcmp (cp, result);
      33    if (retval)
      34      printf ("dirname(\"%s\") should be \"%s\", but is \"%s\"\n",
      35  	    input, result, cp);
      36    return retval;
      37  }
      38  
      39  static int
      40  do_test (void)
      41  {
      42    int result = 0;
      43  
      44    /* These are the examples given in XPG4.2.  */
      45    result |= test ("/usr/lib", "/usr");
      46    result |= test ("/usr/", "/");
      47    result |= test ("usr", ".");
      48    result |= test ("/", "/");
      49    result |= test (".", ".");
      50    result |= test ("..", ".");
      51  
      52    /* Some more tests.   */
      53    result |= test ("/usr/lib/", "/usr");
      54    result |= test ("/usr", "/");
      55    result |= test ("a//", ".");
      56    result |= test ("a////", ".");
      57    result |= test ("////usr", "/");
      58    result |= test ("////usr//", "/");
      59    result |= test ("//usr", "//");
      60    result |= test ("//usr//", "//");
      61    result |= test ("//", "//");
      62  
      63    /* Other Unix implementations behave like this.  */
      64    result |= test ("x///y", "x");
      65    result |= test ("x/////y", "x");
      66  
      67    return result != 0;
      68  }
      69  
      70  #define TEST_FUNCTION do_test ()
      71  #include "../test-skeleton.c"