/* Child program invoked by test-system-quote-main.
   Copyright (C) 2012-2023 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, 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/>.  */

#include <config.h>

#include <stdio.h>
#include <string.h>

/* Do not use any gnulib replacements, since this program should
   link against as few libraries as possible.  */
#undef fclose
#undef fopen
#undef fprintf
#undef fread
/* Restore the original fopen definition on AIX.  */
#if defined _AIX && defined _LARGE_FILES
# define fopen fopen64
#endif

#define EXPECTED_DATA_FILE "t-sq-data.tmp"

int
main (int argc, char *argv[])
{
  const char *arg;
  char expected_data[1000];
  size_t expected_data_len;

  if (argc < 2)
    /* Expected one data argument, received none.  */
    return 2;
  if (argc > 2)
    /* Expected one data argument, received more than one.  */
    return 3;
  arg = argv[1];

  /* Read the contents of EXPECTED_DATA_FILE.  */
  {
    FILE *fp = fopen (EXPECTED_DATA_FILE, "rb");
    if (fp == NULL)
      return 4;
    expected_data_len = fread (expected_data, 1, sizeof (expected_data), fp);
    if (fclose (fp))
      return 5;
  }

  if (!(strlen (arg) == expected_data_len
        && memcmp (arg, expected_data, expected_data_len) == 0))
    {
      /* arg is not as expected.  */
      fprintf (stderr, "expected: %.*s\nreceived: %s\n",
               (int)expected_data_len, expected_data, arg);
      return 1;
    }
  else
    return 0;
}