t/gnugetopt.c

   1 /*
   2  * Wrapper to run the getopt_long tests from Gnulib.
   3  *
   4  * Copyright © 2024 Nick Bowler
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  18  */
  19
  20 /*
  21  * Can be run with an optional "posix" or "gnu" argument to select between
  22  * different test modes.
  23  *
  24  * If run in the default gnu mode, POSIXLY_CORRECT must be unset in the
  25  * environment.  Otherwise, in posix mode, POSIXLY_CORRECT must be set.
  26  *
  27  */
  28
  29 #undef HAVE_GETOPT_LONG
  30 #undef HAVE_GETOPT_LONG_ONLY
  31
  32 #include "gnu_getopt.h"
  33
  34 #include <stdlib.h>
  35 #include <string.h>
  36 #include "tap.h"
  37
  38 #undef no_argument
  39 #define no_argument 0
  40
  41 #undef required_argument
  42 #define required_argument 1
  43
  44 #undef optional_argument
  45 #define optional_argument 2
  46
  47 #define FALLTHROUGH /**/
  48
  49 #if HAVE_STRINGIZE
  50 #  define ASSERT(x) tap_result(x, "%s:%d: %s", __FILE__, __LINE__, #x);
  51 #else
  52 #  define ASSERT(x) tap_result(x, "%s:%d", __FILE__, __LINE__);
  53 #endif
  54
  55 #include "gnugetopt_test.h"
  56
  57 static void check_mode(int posix_mode, int posixly_correct)
  58 {
  59         if (posix_mode == posixly_correct)
  60                 return;
  61
  62         if (!posix_mode)
  63                 tap_diag("Please remove POSIXLY_CORRECT from the environment");
  64         else
  65                 tap_diag("Please set POSIXLY_CORRECT in the environment");
  66
  67         tap_skip_all("POSIXLY_CORRECT environment mismatch");
  68 }
  69
  70 static void usage(void)
  71 {
  72         tap_bail_out("Usage: t/gnu_getopt [posix|gnu]");
  73 }
  74
  75 int main(int argc, char **argv)
  76 {
  77         int posixly_correct = !!getenv("POSIXLY_CORRECT");
  78
  79         if (argc == 2) {
  80                 if (!strcmp(argv[1], "posix"))
  81                         check_mode(1, posixly_correct);
  82                 else if (!strcmp(argv[1], "gnu"))
  83                         check_mode(0, posixly_correct);
  84                 else
  85                         usage();
  86         } else if (argc > 2) {
  87                 usage();
  88         } else {
  89                 check_mode(0, posixly_correct);
  90         }
  91
  92         if (getenv("POSIXLY_CORRECT"))
  93                 test_getopt_long_posix();
  94         else
  95                 test_getopt_long();
  96
  97         test_getopt_long_only();
  98
  99         tap_done();
 100 }