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/*
* 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_sys_git_index_h__
#define INCLUDE_sys_git_index_h__
/**
* @file git2/sys/index.h
* @brief Low-level Git index manipulation routines
* @defgroup git_backend Git custom backend APIs
* @ingroup Git
* @{
*/
GIT_BEGIN_DECL
/** Representation of a rename conflict entry in the index. */
typedef struct git_index_name_entry {
char *ancestor;
char *ours;
char *theirs;
} git_index_name_entry;
/** Representation of a resolve undo entry in the index. */
typedef struct git_index_reuc_entry {
unsigned int mode[3];
git_oid oid[3];
char *path;
} git_index_reuc_entry;
/** @name Conflict Name entry functions
*
* These functions work on rename conflict entries.
*/
/**@{*/
/**
* Get the count of filename conflict entries currently in the index.
*
* @param index an existing index object
* @return integer of count of current filename conflict entries
*/
GIT_EXTERN(unsigned int) git_index_name_entrycount(git_index *index);
/**
* Get a filename conflict entry from the index.
*
* The returned entry is read-only and should not be modified
* or freed by the caller.
*
* @param index an existing index object
* @param n the position of the entry
* @return a pointer to the filename conflict entry; NULL if out of bounds
*/
GIT_EXTERN(const git_index_name_entry *) git_index_name_get_byindex(
git_index *index, size_t n);
/**
* Record the filenames involved in a rename conflict.
*
* @param index an existing index object
* @param ancestor the path of the file as it existed in the ancestor
* @param ours the path of the file as it existed in our tree
* @param theirs the path of the file as it existed in their tree
*/
GIT_EXTERN(int) git_index_name_add(git_index *index,
const char *ancestor, const char *ours, const char *theirs);
/**
* Remove all filename conflict entries.
*
* @param index an existing index object
*/
GIT_EXTERN(void) git_index_name_clear(git_index *index);
/**@}*/
/** @name Resolve Undo (REUC) index entry manipulation.
*
* These functions work on the Resolve Undo index extension and contains
* data about the original files that led to a merge conflict.
*/
/**@{*/
/**
* Get the count of resolve undo entries currently in the index.
*
* @param index an existing index object
* @return integer of count of current resolve undo entries
*/
GIT_EXTERN(unsigned int) git_index_reuc_entrycount(git_index *index);
/**
* Finds the resolve undo entry that points to the given path in the Git
* index.
*
* @param at_pos the address to which the position of the reuc entry is written (optional)
* @param index an existing index object
* @param path path to search
* @return 0 if found, < 0 otherwise (GIT_ENOTFOUND)
*/
GIT_EXTERN(int) git_index_reuc_find(size_t *at_pos, git_index *index, const char *path);
/**
* Get a resolve undo entry from the index.
*
* The returned entry is read-only and should not be modified
* or freed by the caller.
*
* @param index an existing index object
* @param path path to search
* @return the resolve undo entry; NULL if not found
*/
GIT_EXTERN(const git_index_reuc_entry *) git_index_reuc_get_bypath(git_index *index, const char *path);
/**
* Get a resolve undo entry from the index.
*
* The returned entry is read-only and should not be modified
* or freed by the caller.
*
* @param index an existing index object
* @param n the position of the entry
* @return a pointer to the resolve undo entry; NULL if out of bounds
*/
GIT_EXTERN(const git_index_reuc_entry *) git_index_reuc_get_byindex(git_index *index, size_t n);
/**
* Adds a resolve undo entry for a file based on the given parameters.
*
* The resolve undo entry contains the OIDs of files that were involved
* in a merge conflict after the conflict has been resolved. This allows
* conflicts to be re-resolved later.
*
* If there exists a resolve undo entry for the given path in the index,
* it will be removed.
*
* This method will fail in bare index instances.
*
* @param index an existing index object
* @param path filename to add
* @param ancestor_mode mode of the ancestor file
* @param ancestor_id oid of the ancestor file
* @param our_mode mode of our file
* @param our_id oid of our file
* @param their_mode mode of their file
* @param their_id oid of their file
* @return 0 or an error code
*/
GIT_EXTERN(int) git_index_reuc_add(git_index *index, const char *path,
int ancestor_mode, const git_oid *ancestor_id,
int our_mode, const git_oid *our_id,
int their_mode, const git_oid *their_id);
/**
* Remove an resolve undo entry from the index
*
* @param index an existing index object
* @param n position of the resolve undo entry to remove
* @return 0 or an error code
*/
GIT_EXTERN(int) git_index_reuc_remove(git_index *index, size_t n);
/**
* Remove all resolve undo entries from the index
*
* @param index an existing index object
*/
GIT_EXTERN(void) git_index_reuc_clear(git_index *index);
/**@}*/
/** @} */
GIT_END_DECL
#endif
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