diff options
| -rw-r--r-- | src/git/odb.h | 11 | ||||
| -rw-r--r-- | src/odb.c | 60 |
2 files changed, 71 insertions, 0 deletions
diff --git a/src/git/odb.h b/src/git/odb.h index 0a7ee40d3..8a8cd3e5f 100644 --- a/src/git/odb.h +++ b/src/git/odb.h @@ -152,6 +152,17 @@ GIT_EXTERN(int) git_obj__loose_object_type(git_otype type); */ GIT_EXTERN(int) git_obj_hash(git_oid *id, git_obj *obj); +/** + * Determine if the given object can be found in the object database. + * + * @param db database to be searched for the given object. + * @param id the object to search for. + * @return + * - true, if the object was found + * - false, otherwise + */ +GIT_EXTERN(int) git_odb_exists(git_odb *db, const git_oid *id); + /** @} */ GIT_END_DECL #endif @@ -819,6 +819,66 @@ static git_packlist *packlist_get(git_odb *db) return pl; } +static int search_packs(git_pack **p, off_t *offset, git_odb *db, const git_oid *id) +{ + git_packlist *pl = packlist_get(db); + size_t j; + + if (!pl) + return GIT_ENOTFOUND; + + for (j = 0; j < pl->n_packs; j++) { + + git_pack *pack = pl->packs[j]; + off_t pos; + int res; + + if (pack_openidx(pack)) + continue; + res = pack->idx_search(&pos, pack, id); + pack_decidx(pack); + + if (!res) { + packlist_dec(db,pl); + if (p) + *p = pack; + if (offset) + *offset = pos; + return GIT_SUCCESS; + } + + } + + packlist_dec(db,pl); + return GIT_ENOTFOUND; +} + +static int exists_packed(git_odb *db, const git_oid *id) +{ + return !search_packs(NULL, NULL, db, id); +} + +static int exists_loose(git_odb *db, const git_oid *id) +{ + char file[GIT_PATH_MAX]; + + if (object_file_name(file, sizeof(file), db->objects_dir, id) < 0) + return 0; + + if (gitfo_exists(file) < 0) + return 0; + + return 1; +} + +int git_odb_exists(git_odb *db, const git_oid *id) +{ + /* TODO: extend to search alternate db's */ + if (exists_packed(db, id)) + return 1; + return exists_loose(db, id); +} + int git_odb_open(git_odb **out, const char *objects_dir) { git_odb *db = git__calloc(1, sizeof(*db)); |