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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_submodule_h__
#define INCLUDE_submodule_h__
#include "git2/submodule.h"
#include "git2/repository.h"
#include "fileops.h"
/* Notes:
*
* Submodule information can be in four places: the index, the config files
* (both .git/config and .gitmodules), the HEAD tree, and the working
* directory.
*
* In the index:
* - submodule is found by path
* - may be missing, present, or of the wrong type
* - will have an oid if present
*
* In the HEAD tree:
* - submodule is found by path
* - may be missing, present, or of the wrong type
* - will have an oid if present
*
* In the config files:
* - submodule is found by submodule "name" which is usually the path
* - may be missing or present
* - will have a name, path, url, and other properties
*
* In the working directory:
* - submodule is found by path
* - may be missing, an empty directory, a checked out directory,
* or of the wrong type
* - if checked out, will have a HEAD oid
* - if checked out, will have git history that can be used to compare oids
* - if checked out, may have modified files and/or untracked files
*/
/**
* Description of submodule
*
* This record describes a submodule found in a repository. There should be
* an entry for every submodule found in the HEAD and index, and for every
* submodule described in .gitmodules. The fields are as follows:
*
* - `rc` tracks the refcount of how many hash table entries in the
* git_submodule_cache there are for this submodule. It only comes into
* play if the name and path of the submodule differ.
*
* - `name` is the name of the submodule from .gitmodules.
* - `path` is the path to the submodule from the repo root. It is almost
* always the same as `name`.
* - `url` is the url for the submodule.
* - `update` is a git_submodule_update_t value - see gitmodules(5) update.
* - `update_default` is the update value from the config
* - `ignore` is a git_submodule_ignore_t value - see gitmodules(5) ignore.
* - `ignore_default` is the ignore value from the config
* - `fetch_recurse` is a git_submodule_recurse_t value - see gitmodules(5)
* fetchRecurseSubmodules.
* - `fetch_recurse_default` is the recurse value from the config
*
* - `repo` is the parent repository that contains this submodule.
* - `flags` after for internal use, tracking where this submodule has been
* found (head, index, config, workdir) and known status info, etc.
* - `head_oid` is the SHA1 for the submodule path in the repo HEAD.
* - `index_oid` is the SHA1 for the submodule recorded in the index.
* - `wd_oid` is the SHA1 for the HEAD of the checked out submodule.
*
* If the submodule has been added to .gitmodules but not yet git added,
* then the `index_oid` will be zero but still marked valid. If the
* submodule has been deleted, but the delete has not been committed yet,
* then the `index_oid` will be set, but the `url` will be NULL.
*/
struct git_submodule {
git_refcount rc;
/* information from config */
char *name;
char *path; /* important: may just point to "name" string */
char *url;
char *branch;
git_submodule_update_t update;
git_submodule_update_t update_default;
git_submodule_ignore_t ignore;
git_submodule_ignore_t ignore_default;
git_submodule_recurse_t fetch_recurse;
git_submodule_recurse_t fetch_recurse_default;
/* internal information */
git_repository *repo;
uint32_t flags;
git_oid head_oid;
git_oid index_oid;
git_oid wd_oid;
};
/**
* The git_submodule_cache stores known submodules along with timestamps,
* etc. about when they were loaded
*/
typedef struct {
git_repository *repo;
git_strmap *submodules;
git_mutex lock;
/* cache invalidation data */
git_oid head_id;
git_futils_filestamp index_stamp;
git_buf gitmodules_path;
git_futils_filestamp gitmodules_stamp;
git_futils_filestamp config_stamp;
} git_submodule_cache;
/* Force revalidation of submodule data cache (alloc as needed) */
extern int git_submodule_cache_refresh(git_repository *repo);
/* Release all submodules */
extern void git_submodule_cache_free(git_repository *repo);
/* Additional flags on top of public GIT_SUBMODULE_STATUS values */
enum {
GIT_SUBMODULE_STATUS__WD_SCANNED = (1u << 20),
GIT_SUBMODULE_STATUS__HEAD_OID_VALID = (1u << 21),
GIT_SUBMODULE_STATUS__INDEX_OID_VALID = (1u << 22),
GIT_SUBMODULE_STATUS__WD_OID_VALID = (1u << 23),
GIT_SUBMODULE_STATUS__HEAD_NOT_SUBMODULE = (1u << 24),
GIT_SUBMODULE_STATUS__INDEX_NOT_SUBMODULE = (1u << 25),
GIT_SUBMODULE_STATUS__WD_NOT_SUBMODULE = (1u << 26),
GIT_SUBMODULE_STATUS__INDEX_MULTIPLE_ENTRIES = (1u << 27),
};
#define GIT_SUBMODULE_STATUS__CLEAR_INTERNAL(S) \
((S) & ~(0xFFFFFFFFu << 20))
/* Internal submodule check does not attempt to refresh cached data */
extern bool git_submodule__is_submodule(git_repository *repo, const char *name);
/* Internal lookup does not attempt to refresh cached data */
extern int git_submodule__lookup(
git_submodule **out, git_repository *repo, const char *path);
/* Internal status fn returns status and optionally the various OIDs */
extern int git_submodule__status(
unsigned int *out_status,
git_oid *out_head_id,
git_oid *out_index_id,
git_oid *out_wd_id,
git_submodule *sm,
git_submodule_ignore_t ign);
/* Open submodule repository as bare repo for quick HEAD check, etc. */
extern int git_submodule_open_bare(
git_repository **repo,
git_submodule *submodule);
extern int git_submodule_parse_ignore(
git_submodule_ignore_t *out, const char *value);
extern int git_submodule_parse_update(
git_submodule_update_t *out, const char *value);
extern const char *git_submodule_ignore_to_str(git_submodule_ignore_t);
extern const char *git_submodule_update_to_str(git_submodule_update_t);
extern const char *git_submodule_recurse_to_str(git_submodule_recurse_t);
#endif
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