/* funopen.c - Replacement for funopen.

 * Copyright (C) 2003, 2005 Free Software Foundation, Inc.

 *

 * This file is part of Assuan.

 *

 * Assuan 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.

 *

 * Assuan 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 this program; if not, see <http://www.gnu.org/licenses/>.

 * SPDX-License-Identifier: LGPL-2.1+

 */

#ifdef HAVE_CONFIG_H

#include <config.h>

#endif

#include <stdio.h>

/* Replacement for the *BSD function:

  FILE *funopen (void *cookie,

                 int (*readfn)(void *, char *, int),

                 int (*writefn)(void *, const char *, int),

                 fpos_t (*seekfn)(void *, fpos_t, int),

                 int (*closefn)(void *));

  The functions to provide my either be NULL if not required or

  similar to the unistd function with the exception of using the

  cookie instead of the file descriptor.

*/

#ifdef HAVE_FOPENCOOKIE

FILE *

_assuan_funopen(void *cookie,

                cookie_read_function_t *readfn,

                cookie_write_function_t *writefn,

                cookie_seek_function_t *seekfn,

                cookie_close_function_t *closefn)

{

  cookie_io_functions_t io;

  io.read = readfn;

  io.write = writefn;

  io.seek = seekfn;

  io.close = closefn;

  return fopencookie (cookie,

		      readfn ? ( writefn ? "rw" : "r" )

		      : ( writefn ? "w" : ""), io);

}

#else

#error No known way to implement funopen.

#endif