view mercurial/thirdparty/xdiff/xdiff.h @ 51725:bbe59cc5d2e1

rust-changelog: accessing the index

The `Index` object is currently the one providing all DAG related
algorithms, starting with simple ancestors iteration up to more
advanced ones (ranges, common ancestors…).

From pure Rust code, there was no way to access the changelog index for
a given `Repository`, probably because `rhg` does not use any such algorithm
yet.

/*
 *  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, see
 *  <http://www.gnu.org/licenses/>.
 *
 *  Davide Libenzi <[e-mail]>
 *
 */

#if !defined(XDIFF_H)
#define XDIFF_H

#ifdef __cplusplus
extern "C" {
#endif /* #ifdef __cplusplus */

#include <stddef.h> /* size_t */

#if !defined(_MSC_VER) || _MSC_VER >= 1600
#include <stdint.h>
#else
/* prior to Visual Studio 2010 */
typedef long long int64_t;
typedef unsigned long long uint64_t;
#endif

/* xpparm_t.flags */
#define XDF_NEED_MINIMAL (1 << 0)

#define XDF_INDENT_HEURISTIC (1 << 23)

/* emit bdiff-style "matched" (a1, a2, b1, b2) hunks instead of "different"
 * (a1, a2 - a1, b1, b2 - b1) hunks */
#define XDL_EMIT_BDIFFHUNK (1 << 4)

typedef struct s_mmfile {
	char *ptr;
	int64_t size;
} mmfile_t;

typedef struct s_mmbuffer {
	char *ptr;
	int64_t size;
} mmbuffer_t;

typedef struct s_xpparam {
	uint64_t flags;
} xpparam_t;

typedef struct s_xdemitcb {
	void *priv;
} xdemitcb_t;

typedef int (*xdl_emit_hunk_consume_func_t)(int64_t start_a, int64_t count_a,
					    int64_t start_b, int64_t count_b,
					    void *cb_data);

typedef struct s_xdemitconf {
	uint64_t flags;
	xdl_emit_hunk_consume_func_t hunk_func;
} xdemitconf_t;


#define xdl_malloc(x) malloc(x)
#define xdl_free(ptr) free(ptr)
#define xdl_realloc(ptr,x) realloc(ptr,x)

void *xdl_mmfile_first(mmfile_t *mmf, int64_t *size);
int64_t 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);

#ifdef __cplusplus
}
#endif /* #ifdef __cplusplus */

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