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#ifndef INCLUDE_git_repository_h__
#define INCLUDE_git_repository_h__
#include "common.h"
#include "odb.h"
#include "commit.h"
#include "index.h"
/**
* @file git/repository.h
* @brief Git revision object management routines
* @defgroup git_repository Git revision object management routines
* @ingroup Git
* @{
*/
GIT_BEGIN_DECL
/**
* Open a git repository.
*
* The 'path' argument must point to an existing git repository
* folder, e.g.
*
* /path/to/my_repo/.git/ (normal repository)
* objects/
* index
* HEAD
*
* /path/to/bare_repo/ (bare repository)
* objects/
* index
* HEAD
*
* The method will automatically detect if 'path' is a normal
* or bare repository or fail is 'path' is neither.
*
* @param repository pointer to the repo which will be opened
* @param path the path to the repository
* @return 0 on sucess; error code otherwise
*/
GIT_EXTERN(int) git_repository_open(git_repository **repository, const char *path);
/**
* Open a git repository by manually specifying all its paths
*
* @param repository pointer to the repo which will be opened
*
* @param git_dir The full path to the repository folder
* e.g. a '.git' folder for live repos, any folder for bare
* Equivalent to $GIT_DIR.
* Cannot be NULL.
*
* @param git_object_directory The full path to the ODB folder.
* the folder where all the loose and packed objects are stored
* Equivalent to $GIT_OBJECT_DIRECTORY.
* If NULL, "$GIT_DIR/objects/" is assumed.
*
* @param git_index_file The full path to the index (dircache) file
* Equivalent to $GIT_INDEX_FILE.
* If NULL, "$GIT_DIR/index" is assumed.
*
* @param git_work_tree The full path to the working tree of the repository,
* if the repository is not bare.
* Equivalent to $GIT_WORK_TREE.
* If NULL, the repository is assumed to be bare.
*
* @return 0 on sucess; error code otherwise
*/
GIT_EXTERN(int) git_repository_open2(git_repository **repository,
const char *git_dir,
const char *git_object_directory,
const char *git_index_file,
const char *git_work_tree);
/**
* Lookup a reference to one of the objects in the repostory.
*
* The generated reference is owned by the repository and
* should not be freed by the user.
*
* The 'type' parameter must match the type of the object
* in the odb; the method will fail otherwise.
* The special value 'GIT_OBJ_ANY' may be passed to let
* the method guess the object's type.
*
* @param object pointer to the looked-up object
* @param repo the repository to look up the object
* @param id the unique identifier for the object
* @param type the type of the object
* @return a reference to the object
*/
GIT_EXTERN(int) git_repository_lookup(git_object **object, git_repository *repo, const git_oid *id, git_otype type);
/**
* Get the object database behind a Git repository
*
* @param repo a repository object
* @return a pointer to the object db
*/
GIT_EXTERN(git_odb *) git_repository_database(git_repository *repo);
/**
* Get the Index file of a Git repository
*
* @param repo a repository object
* @return a pointer to the Index object;
* NULL if the index cannot be opened
*/
GIT_EXTERN(git_index *) git_repository_index(git_repository *rpeo);
/**
* Create a new in-memory repository object with
* the given type.
*
* The object's attributes can be filled in using the
* corresponding setter methods.
*
* The object will be written back to given git_repository
* when the git_object_write() function is called; objects
* cannot be written to disk until all their main
* attributes have been properly filled.
*
* Objects are instantiated with no SHA1 id; their id
* will be automatically generated when writing to the
* repository.
*
* @param object pointer to the new object
* @parem repo Repository where the object belongs
* @param type Type of the object to be created
* @return the new object
*/
GIT_EXTERN(int) git_repository_newobject(git_object **object, git_repository *repo, git_otype type);
/**
* Write back an object to disk.
*
* The object will be written to its corresponding
* repository.
*
* If the object has no changes since it was first
* read from the repository, no actions will take place.
*
* If the object has been modified since it was read from
* the repository, or it has been created from scratch
* in memory, it will be written to the repository and
* its SHA1 ID will be updated accordingly.
*
* @param object Git object to write back
* @return 0 on success; otherwise an error code
*/
GIT_EXTERN(int) git_object_write(git_object *object);
/**
* Get the id (SHA1) of a repository object
*
* In-memory objects created by git_object_new() do not
* have a SHA1 ID until they are written on a repository.
*
* @param obj the repository object
* @return the SHA1 id
*/
GIT_EXTERN(const git_oid *) git_object_id(git_object *obj);
/**
* Get the object type of an object
*
* @param obj the repository object
* @return the object's type
*/
GIT_EXTERN(git_otype) git_object_type(git_object *obj);
/**
* Get the repository that owns this object
*
* @param obj the object
* @return the repository who owns this object
*/
GIT_EXTERN(git_repository *) git_object_owner(git_object *obj);
/**
* Free a reference to one of the objects in the repository.
*
* Repository objects are managed automatically by the library,
* but this method can be used to force freeing one of the
* objects.
*
* Careful: freeing objects in the middle of a repository
* traversal will most likely cause errors.
*
* @param object the object to free
*/
GIT_EXTERN(void) git_object_free(git_object *object);
/**
* Free a previously allocated repository
* @param repo repository handle to close. If NULL nothing occurs.
*/
GIT_EXTERN(void) git_repository_free(git_repository *repo);
/** @} */
GIT_END_DECL
#endif
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