int git_odb_open(git_odb **out, const char *objects_dir)
{
git_odb *db;
int error;
assert(out && objects_dir);
*out = NULL;
if ((error = git_odb_new(&db)) < 0)
return error;
if ((error = add_default_backends(db, objects_dir, 0)) < GIT_SUCCESS)
goto cleanup;
if ((error = load_alternates(db, objects_dir)) < GIT_SUCCESS)
goto cleanup;
*out = db;
return GIT_SUCCESS;
cleanup:
git_odb_close(db);
return error;
}
static int add_default_backends(
git_odb *db, const char *objects_dir,
bool as_alternates, int alternate_depth)
{
size_t i;
struct stat st;
ino_t inode;
git_odb_backend *loose, *packed;
/* TODO: inodes are not really relevant on Win32, so we need to find
* a cross-platform workaround for this */
#ifdef GIT_WIN32
GIT_UNUSED(i);
GIT_UNUSED(st);
inode = 0;
#else
if (p_stat(objects_dir, &st) < 0) {
if (as_alternates)
return 0;
giterr_set(GITERR_ODB, "Failed to load object database in '%s'", objects_dir);
return -1;
}
inode = st.st_ino;
for (i = 0; i < db->backends.length; ++i) {
backend_internal *backend = git_vector_get(&db->backends, i);
if (backend->disk_inode == inode)
return 0;
}
#endif
/* add the loose object backend */
if (git_odb_backend_loose(&loose, objects_dir, -1, 0, 0, 0) < 0 ||
add_backend_internal(db, loose, GIT_LOOSE_PRIORITY, as_alternates, inode) < 0)
return -1;
/* add the packed file backend */
if (git_odb_backend_pack(&packed, objects_dir) < 0 ||
add_backend_internal(db, packed, GIT_PACKED_PRIORITY, as_alternates, inode) < 0)
return -1;
return load_alternates(db, objects_dir, alternate_depth);
}
