kc3-lang/gnulib/tests/test-argv-iter.c

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• Hash : 7b089321
  Author :
  Date : 2025-01-01T09:24:36
  

  maint: run 'make update-copyright'
  

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• tests/test-argv-iter.c

• /* Test argv iterator
     Copyright (C) 2008-2025 Free Software Foundation, Inc.
  
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation, either version 3 of the License, or
     (at your option) any later version.
  
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  
  /* Written by Jim Meyering.  */
  
  #include <config.h>
  
  #include "argv-iter.h"
  
  #include <stdio.h>
  #include <string.h>
  
  #include "macros.h"
  
  #define ARRAY_CARDINALITY(Array) (sizeof (Array) / sizeof *(Array))
  #define STREQ(a, b) (strcmp (a, b) == 0)
  
  static FILE *
  write_nul_delimited_argv (char **argv)
  {
    FILE *fp = tmpfile ();
    ASSERT (fp);
    while (*argv)
      {
        size_t len = strlen (*argv) + 1;
        ASSERT (fwrite (*argv, len, 1, fp) == 1);
        argv++;
      }
    ASSERT (fflush (fp) == 0);
    rewind (fp);
    return fp;
  }
  
  int
  main (void)
  {
    static char one[] = "1";
    static char two[] = "2";
    static char three[] = "3";
    static char *av[][4] = {
      {NULL},
      {one, NULL},
      {one, two, NULL},
      {one, two, three, NULL}
    };
  
    int use_stream;
    for (use_stream = 0; use_stream < 2; use_stream++)
      {
        size_t i;
        for (i = 0; i < ARRAY_CARDINALITY (av); i++)
          {
            FILE *fp;
            struct argv_iterator *ai;
            size_t n_found = 0;
            if (use_stream)
              {
                /* Generate an identical list to be read via FP.  */
                ASSERT ((fp = write_nul_delimited_argv (av[i])) != NULL);
                ai = argv_iter_init_stream (fp);
              }
            else
              {
                fp = NULL;
                ai = argv_iter_init_argv (av[i]);
              }
            ASSERT (ai);
  
            while (1)
              {
                enum argv_iter_err ai_err;
                char *s = argv_iter (ai, &ai_err);
                ASSERT ((i == n_found) == (ai_err == AI_ERR_EOF));
                ASSERT ((s == NULL) ^ (ai_err == AI_ERR_OK));
                ASSERT (ai_err == AI_ERR_OK || ai_err == AI_ERR_EOF);
                if (ai_err == AI_ERR_EOF)
                  break;
                /* In stream mode, the strings are equal, but
                   in argv mode the actual pointers are equal.  */
                ASSERT (use_stream
                        ? STREQ (s, av[i][n_found])
                        : s == av[i][n_found]);
                ++n_found;
              }
            ASSERT (argv_iter_n_args (ai) == i);
            argv_iter_free (ai);
            if (fp)
              ASSERT (fclose (fp) == 0);
          }
      }
  
    return test_exit_status;
  }
  

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