/*
 * 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_diff_patch_h__
#define INCLUDE_diff_patch_h__
#include "common.h"
#include "diff.h"
#include "diff_file.h"
#include "array.h"
#include "git2/patch.h"
 /* cached information about a hunk in a diff */
typedef struct diff_patch_hunk {
        git_diff_hunk hunk;
        size_t line_start;
        size_t line_count;
} diff_patch_hunk;
enum {
        GIT_DIFF_PATCH_ALLOCATED = (1 << 0),
        GIT_DIFF_PATCH_INITIALIZED = (1 << 1),
        GIT_DIFF_PATCH_LOADED = (1 << 2),
        /* the two sides are different */
        GIT_DIFF_PATCH_DIFFABLE = (1 << 3),
        /* the difference between the two sides has been computed */
        GIT_DIFF_PATCH_DIFFED = (1 << 4),
        GIT_DIFF_PATCH_FLATTENED = (1 << 5),
};
struct git_patch {
        git_refcount rc;
        git_diff *diff; /* for refcount purposes, maybe NULL for blob diffs */
        git_diff_options diff_opts;
        git_diff_delta *delta;
        size_t delta_index;
        git_diff_file_content ofile;
        git_diff_file_content nfile;
        uint32_t flags;
        git_diff_binary binary;
        git_array_t(diff_patch_hunk) hunks;
        git_array_t(git_diff_line)   lines;
        size_t content_size, context_size, header_size;
        git_pool flattened;
};
extern git_diff *git_patch__diff(git_patch *);
extern git_diff_driver *git_patch__driver(git_patch *);
extern void git_patch__old_data(char **, size_t *, git_patch *);
extern void git_patch__new_data(char **, size_t *, git_patch *);
extern int git_patch__invoke_callbacks(
        git_patch *patch,
        git_diff_file_cb file_cb,
        git_diff_binary_cb binary_cb,
        git_diff_hunk_cb hunk_cb,
        git_diff_line_cb line_cb,
        void *payload);
typedef struct git_diff_output git_diff_output;
struct git_diff_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_diff_output *output, git_patch *patch);
};
#endif