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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