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/* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*/
#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 fiel descripor.
*/
#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 = { NULL };
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
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