/* Write a string to a file.

   Copyright (C) 2017-2018 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

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

#include <fcntl.h>

#include <string.h>

#include <support/check.h>

#include <support/xunistd.h>

void

support_write_file_string (const char *path, const char *contents)

{

  int fd = xopen (path, O_CREAT | O_TRUNC | O_WRONLY, 0666);

  const char *end = contents + strlen (contents);

  for (const char *p = contents; p < end; )

    {

      ssize_t ret = write (fd, p, end - p);

      if (ret < 0)

        FAIL_EXIT1 ("cannot write to \"%s\": %m", path);

      if (ret == 0)

        FAIL_EXIT1 ("zero-length write to \"%s\"", path);

      p += ret;

    }

  xclose (fd);

}