bspatch.h

/*-
 * Copyright 2003-2005 Colin Percival
 * Copyright 2012-2018 Matthew Endsley
 * Copyright 2018-2020 Emanuel Komínek
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted providing that the following conditions 
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef BSPATCH_H
#define BSPATCH_H

#include <stddef.h>
#include <stdint.h>

#ifdef __cplusplus
extern "C" {
#endif // (__cplusplus)

enum bspatch_stream_type
{
	BSDIFF_READCONTROL,
	BSDIFF_READDIFF,
	BSDIFF_READEXTRA,
};

struct bspatch_stream
{
	void * opaque;
	int (* read)(const struct bspatch_stream * stream, void * buffer,
	             size_t length, enum bspatch_stream_type type);
};

int bspatch(const uint8_t * source, const int64_t sourcesize, uint8_t * target,
            const int64_t targetsize, struct bspatch_stream * stream);

#ifdef __cplusplus
}
#endif // (__cplusplus)

#endif