/* Error-checking wrappers for memstream functions.

   Copyright (C) 2016-2018 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 <support/xmemstream.h>

#include <errno.h>

#include <stdlib.h>

#include <support/check.h>

#include <support/xstdio.h>

void

xopen_memstream (struct xmemstream *stream)

{

  int old_errno = errno;

  *stream = (struct xmemstream) {};

  stream->out = open_memstream (&stream->buffer, &stream->length);

  if (stream->out == NULL)

    FAIL_EXIT1 ("open_memstream: %m");

  errno = old_errno;

}

void

xfclose_memstream (struct xmemstream *stream)

{

  xfclose (stream->out);

  stream->out = NULL;

}