/*

 *  LibXDiff by Davide Libenzi ( File Differential Library )

 *  Copyright (C) 2003  Davide Libenzi

 *

 *  This library 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.

 *

 *  This library 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 library; if not, write to the Free Software

 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 *  Davide Libenzi <davidel@xmailserver.org>

 *

 */

#include "../util.h"

#if !defined(XDIFF_H)

#define XDIFF_H

#ifdef __cplusplus

extern "C" {

#endif /* #ifdef __cplusplus */

#define XDF_NEED_MINIMAL (1 << 1)

#define XDF_IGNORE_WHITESPACE (1 << 2)

#define XDF_IGNORE_WHITESPACE_CHANGE (1 << 3)

#define XDF_IGNORE_WHITESPACE_AT_EOL (1 << 4)

#define XDF_WHITESPACE_FLAGS (XDF_IGNORE_WHITESPACE | XDF_IGNORE_WHITESPACE_CHANGE | XDF_IGNORE_WHITESPACE_AT_EOL)

#define XDF_PATIENCE_DIFF (1 << 5)

#define XDF_HISTOGRAM_DIFF (1 << 6)

#define XDF_DIFF_ALGORITHM_MASK (XDF_PATIENCE_DIFF | XDF_HISTOGRAM_DIFF)

#define XDF_DIFF_ALG(x) ((x) & XDF_DIFF_ALGORITHM_MASK)

#define XDF_IGNORE_BLANK_LINES (1 << 7)

#define XDL_EMIT_FUNCNAMES (1 << 0)

#define XDL_EMIT_COMMON (1 << 1)

#define XDL_EMIT_FUNCCONTEXT (1 << 2)

#define XDL_MMB_READONLY (1 << 0)

#define XDL_MMF_ATOMIC (1 << 0)

#define XDL_BDOP_INS 1

#define XDL_BDOP_CPY 2

#define XDL_BDOP_INSB 3

/* merge simplification levels */

#define XDL_MERGE_MINIMAL 0

#define XDL_MERGE_EAGER 1

#define XDL_MERGE_ZEALOUS 2

#define XDL_MERGE_ZEALOUS_ALNUM 3

/* merge favor modes */

#define XDL_MERGE_FAVOR_OURS 1

#define XDL_MERGE_FAVOR_THEIRS 2

#define XDL_MERGE_FAVOR_UNION 3

/* merge output styles */

#define XDL_MERGE_DIFF3 1

typedef struct s_mmfile {

	char *ptr;

	size_t size;

} mmfile_t;

typedef struct s_mmbuffer {

	char *ptr;

	size_t size;

} mmbuffer_t;

typedef struct s_xpparam {

	unsigned long flags;

} xpparam_t;

typedef struct s_xdemitcb {

	void *priv;

	int (*outf)(void *, mmbuffer_t *, int);

} xdemitcb_t;

typedef long (*find_func_t)(const char *line, long line_len, char *buffer, long buffer_size, void *priv);

typedef int (*xdl_emit_hunk_consume_func_t)(long start_a, long count_a,

					    long start_b, long count_b,

					    void *cb_data);

typedef struct s_xdemitconf {

	long ctxlen;

	long interhunkctxlen;

	unsigned long flags;

	find_func_t find_func;

	void *find_func_priv;

	xdl_emit_hunk_consume_func_t hunk_func;

} xdemitconf_t;

typedef struct s_bdiffparam {

	long bsize;

} bdiffparam_t;

#define xdl_malloc(x) git__malloc(x)

#define xdl_free(ptr) git__free(ptr)

#define xdl_realloc(ptr,x) git__realloc(ptr,x)

void *xdl_mmfile_first(mmfile_t *mmf, long *size);

long xdl_mmfile_size(mmfile_t *mmf);

int xdl_diff(mmfile_t *mf1, mmfile_t *mf2, xpparam_t const *xpp,

	     xdemitconf_t const *xecfg, xdemitcb_t *ecb);

typedef struct s_xmparam {

	xpparam_t xpp;

	int marker_size;

	int level;

	int favor;

	int style;

	const char *ancestor;	/* label for orig */

	const char *file1;	/* label for mf1 */

	const char *file2;	/* label for mf2 */

} xmparam_t;

#define DEFAULT_CONFLICT_MARKER_SIZE 7

int xdl_merge(mmfile_t *orig, mmfile_t *mf1, mmfile_t *mf2,

		xmparam_t const *xmp, mmbuffer_t *result);

#ifdef __cplusplus

}

#endif /* #ifdef __cplusplus */

#endif /* #if !defined(XDIFF_H) */