/*

 * Copyright (C) the libgit2 contributors. All rights reserved.

 *

 * This file is part of libgit2, distributed under the GNU GPL v2 with

 * a Linking Exception. For full terms see the included COPYING file.

 */

#ifndef INCLUDE_patch_generate_h__

#define INCLUDE_patch_generate_h__

#include "common.h"

#include "diff.h"

#include "diff_file.h"

#include "patch.h"

enum {

	GIT_PATCH_GENERATED_ALLOCATED = (1 << 0),

	GIT_PATCH_GENERATED_INITIALIZED = (1 << 1),

	GIT_PATCH_GENERATED_LOADED = (1 << 2),

	/* the two sides are different */

	GIT_PATCH_GENERATED_DIFFABLE = (1 << 3),

	/* the difference between the two sides has been computed */

	GIT_PATCH_GENERATED_DIFFED = (1 << 4),

	GIT_PATCH_GENERATED_FLATTENED = (1 << 5),

};

struct git_patch_generated {

	struct git_patch base;

	git_diff *diff; /* for refcount purposes, maybe NULL for blob diffs */

	size_t delta_index;

	git_diff_file_content ofile;

	git_diff_file_content nfile;

	uint32_t flags;

	git_pool flattened;

};

typedef struct git_patch_generated git_patch_generated;

extern git_diff_driver *git_patch_generated_driver(git_patch_generated *);

extern void git_patch_generated_old_data(

	char **, size_t *, git_patch_generated *);

extern void git_patch_generated_new_data(

	char **, size_t *, git_patch_generated *);

extern int git_patch_generated_from_diff(

	git_patch **, git_diff *, size_t);

typedef struct git_patch_generated_output git_patch_generated_output;

struct git_patch_generated_output {

	/* these callbacks are issued with the diff data */

	git_diff_file_cb file_cb;

	git_diff_binary_cb binary_cb;

	git_diff_hunk_cb hunk_cb;

	git_diff_line_cb data_cb;

	void *payload;

	/* this records the actual error in cases where it may be obscured */

	int error;

	/* this callback is used to do the diff and drive the other callbacks.

	 * see diff_xdiff.h for how to use this in practice for now.

	 */

	int (*diff_cb)(git_patch_generated_output *output,

		git_patch_generated *patch);

};

#endif