64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
/* funopen.c - Replacement for funopen.
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Copyright (C) 2004 g10 Code GmbH
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This file is part of GPGME
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GPGME is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of
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the License, or (at your option) any later version.
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GPGME is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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/* Replacement for the *BSD function:
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FILE *funopen (void *cookie,
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int (*readfn)(void *, char *, int),
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int (*writefn)(void *, const char *, int),
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fpos_t (*seekfn)(void *, fpos_t, int),
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int (*closefn)(void *));
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The functions to provide my either be NULL if not required or
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similar to the unistd function with the exception of using the
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cookie instead of the file descriptor.
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*/
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#ifdef HAVE_FOPENCOOKIE
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FILE *
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_gpgme_funopen(void *cookie,
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cookie_read_function_t *readfn,
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cookie_write_function_t *writefn,
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cookie_seek_function_t *seekfn,
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cookie_close_function_t *closefn)
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{
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cookie_io_functions_t io = { NULL };
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io.read = readfn;
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io.write = writefn;
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io.seek = seekfn;
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io.close = closefn;
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return fopencookie (cookie,
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readfn ? ( writefn ? "rw" : "r" )
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: ( writefn ? "w" : ""), io);
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}
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#else
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#error No known way to implement funopen.
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#endif
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