/* fopen with error checking.

   Copyright (C) 2020 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <https://www.gnu.org/licenses/>.  */

#include <support/xstdio.h>

#include <support/check.h>

size_t

xgetline (char **lineptr, size_t *n, FILE *stream)

{

  TEST_VERIFY (!ferror (stream));

  ssize_t ret = getline (lineptr, n, stream);

  if (ferror (stream))

    {

      TEST_VERIFY (ret < 0);

      FAIL_EXIT1 ("getline: %m");

    }

  if (feof (stream))

    {

      TEST_VERIFY (ret <= 0);

      return 0;

    }

  TEST_VERIFY (ret > 0);

  return ret;

}