/* * 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_repository_h__ #define INCLUDE_git_repository_h__ #include "common.h" #include "types.h" #include "oid.h" /** * @file git2/repository.h * @brief Git repository management routines * @defgroup git_repository Git repository management routines * @ingroup Git * @{ */ GIT_BEGIN_DECL /** * Open a git repository. * * The 'path' argument must point to either a git repository * folder, or an existing work dir. * * The method will automatically detect if 'path' is a normal * or bare repository or fail is 'path' is neither. * * @param out pointer to the repo which will be opened * @param path the path to the repository * @return 0 or an error code */ GIT_EXTERN(int) git_repository_open(git_repository **out, const char *path); /** * Create a "fake" repository to wrap an object database * * Create a repository object to wrap an object database to be used * with the API when all you have is an object database. This doesn't * have any paths associated with it, so use with care. * * @param out pointer to the repo * @param odb the object database to wrap * @return 0 or an error code */ GIT_EXTERN(int) git_repository_wrap_odb(git_repository **out, git_odb *odb); /** * Look for a git repository and copy its path in the given buffer. * The lookup start from base_path and walk across parent directories * if nothing has been found. The lookup ends when the first repository * is found, or when reaching a directory referenced in ceiling_dirs * or when the filesystem changes (in case across_fs is true). * * The method will automatically detect if the repository is bare * (if there is a repository). * * @param path_out The user allocated buffer which will * contain the found path. * * @param path_size repository_path size * * @param start_path The base path where the lookup starts. * * @param across_fs If true, then the lookup will not stop when a * filesystem device change is detected while exploring parent directories. * * @param ceiling_dirs A GIT_PATH_LIST_SEPARATOR separated list of * absolute symbolic link free paths. The lookup will stop when any * of this paths is reached. Note that the lookup always performs on * start_path no matter start_path appears in ceiling_dirs ceiling_dirs * might be NULL (which is equivalent to an empty string) * * @return 0 or an error code */ GIT_EXTERN(int) git_repository_discover( char *path_out, size_t path_size, const char *start_path, int across_fs, const char *ceiling_dirs); /** * Option flags for `git_repository_open_ext`. * * * GIT_REPOSITORY_OPEN_NO_SEARCH - Only open the repository if it can be * immediately found in the start_path. Do not walk up from the * start_path looking at parent directories. * * GIT_REPOSITORY_OPEN_CROSS_FS - Unless this flag is set, open will not * continue searching across filesystem boundaries (i.e. when `st_dev` * changes from the `stat` system call). (E.g. Searching in a user's home * directory "/home/user/source/" will not return "/.git/" as the found * repo if "/" is a different filesystem than "/home".) */ typedef enum { GIT_REPOSITORY_OPEN_NO_SEARCH = (1 << 0), GIT_REPOSITORY_OPEN_CROSS_FS = (1 << 1), } git_repository_open_flag_t; /** * Find and open a repository with extended controls. * * @param out Pointer to the repo which will be opened. This can * actually be NULL if you only want to use the error code to * see if a repo at this path could be opened. * @param path Path to open as git repository. If the flags * permit "searching", then this can be a path to a subdirectory * inside the working directory of the repository. * @param flags A combination of the GIT_REPOSITORY_OPEN flags above. * @param ceiling_dirs A GIT_PATH_LIST_SEPARATOR delimited list of path * prefixes at which the search for a containing repository should * terminate. * @return 0 on success, GIT_ENOTFOUND if no repository could be found, * or -1 if there was a repository but open failed for some reason * (such as repo corruption or system errors). */ GIT_EXTERN(int) git_repository_open_ext( git_repository **out, const char *path, unsigned int flags, const char *ceiling_dirs); /** * Create a new repository with neither backends nor config object * * Note that this is only useful if you wish to associate the repository * with a non-filesystem-backed object database and config store. */ GIT_EXTERN(int) git_repository_new(git_repository **out); /** * Free a previously allocated repository * * Note that after a repository is free'd, all the objects it has spawned * will still exist until they are manually closed by the user * with `git_object_free`, but accessing any of the attributes of * an object without a backing repository will result in undefined * behavior * * @param repo repository handle to close. If NULL nothing occurs. */ GIT_EXTERN(void) git_repository_free(git_repository *repo); /** * Creates a new Git repository in the given folder. * * TODO: * - Reinit the repository * * @param out pointer to the repo which will be created or reinitialized * @param path the path to the repository * @param is_bare if true, a Git repository without a working directory is * created at the pointed path. If false, provided path will be * considered as the working directory into which the .git directory * will be created. * * @return 0 or an error code */ GIT_EXTERN(int) git_repository_init( git_repository **out, const char *path, unsigned is_bare); /** * Option flags for `git_repository_init_ext`. * * These flags configure extra behaviors to `git_repository_init_ext`. * In every case, the default behavior is the zero value (i.e. flag is * not set). Just OR the flag values together for the `flags` parameter * when initializing a new repo. Details of individual values are: * * * BARE - Create a bare repository with no working directory. * * NO_REINIT - Return an EEXISTS error if the repo_path appears to * already be an git repository. * * NO_DOTGIT_DIR - Normally a "/.git/" will be appended to the repo * path for non-bare repos (if it is not already there), but * passing this flag prevents that behavior. * * MKDIR - Make the repo_path (and workdir_path) as needed. Init is * always willing to create the ".git" directory even without this * flag. This flag tells init to create the trailing component of * the repo and workdir paths as needed. * * MKPATH - Recursively make all components of the repo and workdir * paths as necessary. * * EXTERNAL_TEMPLATE - libgit2 normally uses internal templates to * initialize a new repo. This flags enables external templates, * looking the "template_path" from the options if set, or the * `init.templatedir` global config if not, or falling back on * "/usr/share/git-core/templates" if it exists. */ typedef enum { GIT_REPOSITORY_INIT_BARE = (1u << 0), GIT_REPOSITORY_INIT_NO_REINIT = (1u << 1), GIT_REPOSITORY_INIT_NO_DOTGIT_DIR = (1u << 2), GIT_REPOSITORY_INIT_MKDIR = (1u << 3), GIT_REPOSITORY_INIT_MKPATH = (1u << 4), GIT_REPOSITORY_INIT_EXTERNAL_TEMPLATE = (1u << 5), } git_repository_init_flag_t; /** * Mode options for `git_repository_init_ext`. * * Set the mode field of the `git_repository_init_options` structure * either to the custom mode that you would like, or to one of the * following modes: * * * SHARED_UMASK - Use permissions configured by umask - the default. * * SHARED_GROUP - Use "--shared=group" behavior, chmod'ing the new repo * to be group writable and "g+sx" for sticky group assignment. * * SHARED_ALL - Use "--shared=all" behavior, adding world readability. * * Anything else - Set to custom value. */ typedef enum { GIT_REPOSITORY_INIT_SHARED_UMASK = 0, GIT_REPOSITORY_INIT_SHARED_GROUP = 0002775, GIT_REPOSITORY_INIT_SHARED_ALL = 0002777, } git_repository_init_mode_t; /** * Extended options structure for `git_repository_init_ext`. * * This contains extra options for `git_repository_init_ext` that enable * additional initialization features. The fields are: * * * flags - Combination of GIT_REPOSITORY_INIT flags above. * * mode - Set to one of the standard GIT_REPOSITORY_INIT_SHARED_... * constants above, or to a custom value that you would like. * * workdir_path - The path to the working dir or NULL for default (i.e. * repo_path parent on non-bare repos). IF THIS IS RELATIVE PATH, * IT WILL BE EVALUATED RELATIVE TO THE REPO_PATH. If this is not * the "natural" working directory, a .git gitlink file will be * created here linking to the repo_path. * * description - If set, this will be used to initialize the "description" * file in the repository, instead of using the template content. * * template_path - When GIT_REPOSITORY_INIT_EXTERNAL_TEMPLATE is set, * this contains the path to use for the template directory. If * this is NULL, the config or default directory options will be * used instead. * * initial_head - The name of the head to point HEAD at. If NULL, then * this will be treated as "master" and the HEAD ref will be set * to "refs/heads/master". If this begins with "refs/" it will be * used verbatim; otherwise "refs/heads/" will be prefixed. * * origin_url - If this is non-NULL, then after the rest of the * repository initialization is completed, an "origin" remote * will be added pointing to this URL. */ typedef struct { unsigned int version; uint32_t flags; uint32_t mode; const char *workdir_path; const char *description; const char *template_path; const char *initial_head; const char *origin_url; } git_repository_init_options; #define GIT_REPOSITORY_INIT_OPTIONS_VERSION 1 #define GIT_REPOSITORY_INIT_OPTIONS_INIT {GIT_REPOSITORY_INIT_OPTIONS_VERSION} /** * Create a new Git repository in the given folder with extended controls. * * This will initialize a new git repository (creating the repo_path * if requested by flags) and working directory as needed. It will * auto-detect the case sensitivity of the file system and if the * file system supports file mode bits correctly. * * @param out Pointer to the repo which will be created or reinitialized. * @param repo_path The path to the repository. * @param opts Pointer to git_repository_init_options struct. * @return 0 or an error code on failure. */ GIT_EXTERN(int) git_repository_init_ext( git_repository **out, const char *repo_path, git_repository_init_options *opts); /** * Retrieve and resolve the reference pointed at by HEAD. * * The returned `git_reference` will be owned by caller and * `git_reference_free()` must be called when done with it to release the * allocated memory and prevent a leak. * * @param out pointer to the reference which will be retrieved * @param repo a repository object * * @return 0 on success, GIT_EORPHANEDHEAD when HEAD points to a non existing * branch, GIT_ENOTFOUND when HEAD is missing; an error code otherwise */ GIT_EXTERN(int) git_repository_head(git_reference **out, git_repository *repo); /** * Check if a repository's HEAD is detached * * A repository's HEAD is detached when it points directly to a commit * instead of a branch. * * @param repo Repo to test * @return 1 if HEAD is detached, 0 if it's not; error code if there * was an error. */ GIT_EXTERN(int) git_repository_head_detached(git_repository *repo); /** * Check if the current branch is an orphan * * An orphan branch is one named from HEAD but which doesn't exist in * the refs namespace, because it doesn't have any commit to point to. * * @param repo Repo to test * @return 1 if the current branch is an orphan, 0 if it's not; error * code if there was an error */ GIT_EXTERN(int) git_repository_head_orphan(git_repository *repo); /** * Check if a repository is empty * * An empty repository has just been initialized and contains * no references. * * @param repo Repo to test * @return 1 if the repository is empty, 0 if it isn't, error code * if the repository is corrupted */ GIT_EXTERN(int) git_repository_is_empty(git_repository *repo); /** * Get the path of this repository * * This is the path of the `.git` folder for normal repositories, * or of the repository itself for bare repositories. * * @param repo A repository object * @return the path to the repository */ GIT_EXTERN(const char *) git_repository_path(git_repository *repo); /** * Get the path of the working directory for this repository * * If the repository is bare, this function will always return * NULL. * * @param repo A repository object * @return the path to the working dir, if it exists */ GIT_EXTERN(const char *) git_repository_workdir(git_repository *repo); /** * Set the path to the working directory for this repository * * The working directory doesn't need to be the same one * that contains the `.git` folder for this repository. * * If this repository is bare, setting its working directory * will turn it into a normal repository, capable of performing * all the common workdir operations (checkout, status, index * manipulation, etc). * * @param repo A repository object * @param workdir The path to a working directory * @param update_gitlink Create/update gitlink in workdir and set config * "core.worktree" (if workdir is not the parent of the .git directory) * @return 0, or an error code */ GIT_EXTERN(int) git_repository_set_workdir( git_repository *repo, const char *workdir, int update_gitlink); /** * Check if a repository is bare * * @param repo Repo to test * @return 1 if the repository is bare, 0 otherwise. */ GIT_EXTERN(int) git_repository_is_bare(git_repository *repo); /** * Get the configuration file for this repository. * * If a configuration file has not been set, the default * config set for the repository will be returned, including * global and system configurations (if they are available). * * The configuration file must be freed once it's no longer * being used by the user. * * @param out Pointer to store the loaded config file * @param repo A repository object * @return 0, or an error code */ GIT_EXTERN(int) git_repository_config(git_config **out, git_repository *repo); /** * Set the configuration file for this repository * * This configuration file will be used for all configuration * queries involving this repository. * * The repository will keep a reference to the config file; * the user must still free the config after setting it * to the repository, or it will leak. * * @param repo A repository object * @param config A Config object */ GIT_EXTERN(void) git_repository_set_config(git_repository *repo, git_config *config); /** * Get the Object Database for this repository. * * If a custom ODB has not been set, the default * database for the repository will be returned (the one * located in `.git/objects`). * * The ODB must be freed once it's no longer being used by * the user. * * @param out Pointer to store the loaded ODB * @param repo A repository object * @return 0, or an error code */ GIT_EXTERN(int) git_repository_odb(git_odb **out, git_repository *repo); /** * Set the Object Database for this repository * * The ODB will be used for all object-related operations * involving this repository. * * The repository will keep a reference to the ODB; the user * must still free the ODB object after setting it to the * repository, or it will leak. * * @param repo A repository object * @param odb An ODB object */ GIT_EXTERN(void) git_repository_set_odb(git_repository *repo, git_odb *odb); /** * Get the Reference Database Backend for this repository. * * If a custom refsdb has not been set, the default database for * the repository will be returned (the one that manipulates loose * and packed references in the `.git` directory). * * The refdb must be freed once it's no longer being used by * the user. * * @param out Pointer to store the loaded refdb * @param repo A repository object * @return 0, or an error code */ GIT_EXTERN(int) git_repository_refdb(git_refdb **out, git_repository *repo); /** * Set the Reference Database Backend for this repository * * The refdb will be used for all reference related operations * involving this repository. * * The repository will keep a reference to the refdb; the user * must still free the refdb object after setting it to the * repository, or it will leak. * * @param repo A repository object * @param refdb An refdb object */ GIT_EXTERN(void) git_repository_set_refdb( git_repository *repo, git_refdb *refdb); /** * Get the Index file for this repository. * * If a custom index has not been set, the default * index for the repository will be returned (the one * located in `.git/index`). * * The index must be freed once it's no longer being used by * the user. * * @param out Pointer to store the loaded index * @param repo A repository object * @return 0, or an error code */ GIT_EXTERN(int) git_repository_index(git_index **out, git_repository *repo); /** * Set the index file for this repository * * This index will be used for all index-related operations * involving this repository. * * The repository will keep a reference to the index file; * the user must still free the index after setting it * to the repository, or it will leak. * * @param repo A repository object * @param index An index object */ GIT_EXTERN(void) git_repository_set_index(git_repository *repo, git_index *index); /** * Retrieve git's prepared message * * Operations such as git revert/cherry-pick/merge with the -n option * stop just short of creating a commit with the changes and save * their prepared message in .git/MERGE_MSG so the next git-commit * execution can present it to the user for them to amend if they * wish. * * Use this function to get the contents of this file. Don't forget to * remove the file after you create the commit. * * @param out Buffer to write data into or NULL to just read required size * @param len Length of buffer in bytes * @param repo Repository to read prepared message from * @return Bytes written to buffer, GIT_ENOTFOUND if no message, or -1 on error */ GIT_EXTERN(int) git_repository_message(char *out, size_t len, git_repository *repo); /** * Remove git's prepared message. * * Remove the message that `git_repository_message` retrieves. */ GIT_EXTERN(int) git_repository_message_remove(git_repository *repo); /** * Remove all the metadata associated with an ongoing git merge, including * MERGE_HEAD, MERGE_MSG, etc. * * @param repo A repository object * @return 0 on success, or error */ GIT_EXTERN(int) git_repository_merge_cleanup(git_repository *repo); typedef int (*git_repository_fetchhead_foreach_cb)(const char *ref_name, const char *remote_url, const git_oid *oid, unsigned int is_merge, void *payload); /** * Call callback 'callback' for each entry in the given FETCH_HEAD file. * * @param repo A repository object * @param callback Callback function * @param payload Pointer to callback data (optional) * @return 0 on success, GIT_ENOTFOUND, GIT_EUSER or error */ GIT_EXTERN(int) git_repository_fetchhead_foreach(git_repository *repo, git_repository_fetchhead_foreach_cb callback, void *payload); typedef int (*git_repository_mergehead_foreach_cb)(const git_oid *oid, void *payload); /** * If a merge is in progress, call callback 'cb' for each commit ID in the * MERGE_HEAD file. * * @param repo A repository object * @param callback Callback function * @param apyload Pointer to callback data (optional) * @return 0 on success, GIT_ENOTFOUND, GIT_EUSER or error */ GIT_EXTERN(int) git_repository_mergehead_foreach(git_repository *repo, git_repository_mergehead_foreach_cb callback, void *payload); /** * Calculate hash of file using repository filtering rules. * * If you simply want to calculate the hash of a file on disk with no filters, * you can just use the `git_odb_hashfile()` API. However, if you want to * hash a file in the repository and you want to apply filtering rules (e.g. * crlf filters) before generating the SHA, then use this function. * * @param out Output value of calculated SHA * @param repo Repository pointer * @param path Path to file on disk whose contents should be hashed. If the * repository is not NULL, this can be a relative path. * @param type The object type to hash as (e.g. GIT_OBJ_BLOB) * @param as_path The path to use to look up filtering rules. If this is * NULL, then the `path` parameter will be used instead. If * this is passed as the empty string, then no filters will be * applied when calculating the hash. */ GIT_EXTERN(int) git_repository_hashfile( git_oid *out, git_repository *repo, const char *path, git_otype type, const char *as_path); /** * Make the repository HEAD point to the specified reference. * * If the provided reference points to a Tree or a Blob, the HEAD is * unaltered and -1 is returned. * * If the provided reference points to a branch, the HEAD will point * to that branch, staying attached, or become attached if it isn't yet. * If the branch doesn't exist yet, no error will be return. The HEAD * will then be attached to an unborn branch. * * Otherwise, the HEAD will be detached and will directly point to * the Commit. * * @param repo Repository pointer * @param refname Canonical name of the reference the HEAD should point at * @return 0 on success, or an error code */ GIT_EXTERN(int) git_repository_set_head( git_repository* repo, const char* refname); /** * Make the repository HEAD directly point to the Commit. * * If the provided committish cannot be found in the repository, the HEAD * is unaltered and GIT_ENOTFOUND is returned. * * If the provided commitish cannot be peeled into a commit, the HEAD * is unaltered and -1 is returned. * * Otherwise, the HEAD will eventually be detached and will directly point to * the peeled Commit. * * @param repo Repository pointer * @param commitish Object id of the Commit the HEAD should point to * @return 0 on success, or an error code */ GIT_EXTERN(int) git_repository_set_head_detached( git_repository* repo, const git_oid* commitish); /** * Detach the HEAD. * * If the HEAD is already detached and points to a Commit, 0 is returned. * * If the HEAD is already detached and points to a Tag, the HEAD is * updated into making it point to the peeled Commit, and 0 is returned. * * If the HEAD is already detached and points to a non commitish, the HEAD is * unaltered, and -1 is returned. * * Otherwise, the HEAD will be detached and point to the peeled Commit. * * @param repo Repository pointer * @return 0 on success, GIT_EORPHANEDHEAD when HEAD points to a non existing * branch or an error code */ GIT_EXTERN(int) git_repository_detach_head( git_repository* repo); typedef enum { GIT_REPOSITORY_STATE_NONE, GIT_REPOSITORY_STATE_MERGE, GIT_REPOSITORY_STATE_REVERT, GIT_REPOSITORY_STATE_CHERRY_PICK, GIT_REPOSITORY_STATE_BISECT, GIT_REPOSITORY_STATE_REBASE, GIT_REPOSITORY_STATE_REBASE_INTERACTIVE, GIT_REPOSITORY_STATE_REBASE_MERGE, GIT_REPOSITORY_STATE_APPLY_MAILBOX, GIT_REPOSITORY_STATE_APPLY_MAILBOX_OR_REBASE, } git_repository_state_t; /** * Determines the status of a git repository - ie, whether an operation * (merge, cherry-pick, etc) is in progress. * * @param repo Repository pointer * @return The state of the repository */ GIT_EXTERN(int) git_repository_state(git_repository *repo); /** @} */ GIT_END_DECL #endif