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 #define ASSERT(x) tap_result(x, "%s:%d: %s", __FILE__, __LINE__, #x);
  49
  50 #include "gnugetopt_test.h"
  51
  52 static void check_mode(int posix_mode, int posixly_correct)
  53 {
  54         if (posix_mode == posixly_correct)
  55                 return;
  56
  57         if (!posix_mode)
  58                 tap_diag("Please remove POSIXLY_CORRECT from the environment");
  59         else
  60                 tap_diag("Please set POSIXLY_CORRECT in the environment");
  61
  62         tap_skip_all("POSIXLY_CORRECT environment mismatch");
  63 }
  64
  65 static void usage(void)
  66 {
  67         tap_bail_out("Usage: t/gnu_getopt [posix|gnu]");
  68 }
  69
  70 int main(int argc, char **argv)
  71 {
  72         int posixly_correct = !!getenv("POSIXLY_CORRECT");
  73
  74         if (argc == 2) {
  75                 if (!strcmp(argv[1], "posix"))
  76                         check_mode(1, posixly_correct);
  77                 else if (!strcmp(argv[1], "gnu"))
  78                         check_mode(0, posixly_correct);
  79                 else
  80                         usage();
  81         } else if (argc > 2) {
  82                 usage();
  83         } else {
  84                 check_mode(0, posixly_correct);
  85         }
  86
  87         if (getenv("POSIXLY_CORRECT"))
  88                 test_getopt_long_posix();
  89         else
  90                 test_getopt_long();
  91
  92         test_getopt_long_only();
  93
  94         tap_done();
  95 }