/*
* 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_git_merge_h__
#define INCLUDE_git_merge_h__
#include "git2/common.h"
#include "git2/types.h"
#include "git2/oid.h"
#include "git2/checkout.h"
#include "git2/index.h"
/**
* @file git2/merge.h
* @brief Git merge routines
* @defgroup git_merge Git merge routines
* @ingroup Git
* @{
*/
GIT_BEGIN_DECL
/**
* Flags for tree_many diff options. A combination of these flags can be
* passed in via the `flags` value in the `git_diff_tree_many_options`.
*/
typedef enum {
/** Detect renames */
GIT_MERGE_TREE_FIND_RENAMES = (1 << 0),
} git_merge_tree_flags;
/**
* Automerge options for `git_merge_trees_opts`.
*/
typedef enum {
GIT_MERGE_AUTOMERGE_NORMAL = 0,
GIT_MERGE_AUTOMERGE_NONE = 1,
GIT_MERGE_AUTOMERGE_FAVOR_OURS = 2,
GIT_MERGE_AUTOMERGE_FAVOR_THEIRS = 3,
} git_merge_automerge_flags;
typedef struct {
unsigned int version;
git_merge_tree_flags flags;
/** Similarity to consider a file renamed (default 50) */
unsigned int rename_threshold;
/** Maximum similarity sources to examine (overrides the
* `merge.renameLimit` config) (default 200)
*/
unsigned int target_limit;
/** Pluggable similarity metric; pass NULL to use internal metric */
git_diff_similarity_metric *metric;
/** Flags for automerging content. */
git_merge_automerge_flags automerge_flags;
} git_merge_tree_opts;
#define GIT_MERGE_TREE_OPTS_VERSION 1
#define GIT_MERGE_TREE_OPTS_INIT {GIT_MERGE_TREE_OPTS_VERSION}
/**
* Find a merge base between two commits
*
* @param out the OID of a merge base between 'one' and 'two'
* @param repo the repository where the commits exist
* @param one one of the commits
* @param two the other commit
* @return Zero on success; GIT_ENOTFOUND or -1 on failure.
*/
GIT_EXTERN(int) git_merge_base(
git_oid *out,
git_repository *repo,
const git_oid *one,
const git_oid *two);
/**
* Find a merge base given a list of commits
*
* @param out the OID of a merge base considering all the commits
* @param repo the repository where the commits exist
* @param input_array oids of the commits
* @param length The number of commits in the provided `input_array`
* @return Zero on success; GIT_ENOTFOUND or -1 on failure.
*/
GIT_EXTERN(int) git_merge_base_many(
git_oid *out,
git_repository *repo,
const git_oid input_array[],
size_t length);
/**
* Merge two trees, producing a `git_index` that reflects the result of
* the merge.
*
* The returned index must be freed explicitly with `git_index_free`.
*
* @param out pointer to store the index result in
* @param repo repository that contains the given trees
* @param ancestor_tree the common ancestor between the trees (or null if none)
* @param our_tree the tree that reflects the destination tree
* @param their_tree the tree to merge in to `our_tree`
* @param opts the merge tree options (or null for defaults)
* @return zero on success, -1 on failure.
*/
GIT_EXTERN(int) git_merge_trees(
git_index **out,
git_repository *repo,
const git_tree *ancestor_tree,
const git_tree *our_tree,
const git_tree *their_tree,
const git_merge_tree_opts *opts);
/** @} */
GIT_END_DECL
#endif
