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/* funopen.c - Replacement for funopen.
Copyright (C) 2004 g10 Code GmbH
This file is part of GPGME
GPGME 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.
GPGME 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., 59 Temple Place - Suite 330, Boston, MA
02111-1307, 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 *
_gpgme_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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