Function _gc

pre_commit/commands/gc.py:61–93

(store: Store)

def _gc(store: Store) -> int:
    with store.exclusive_lock(), store.connect() as db:
        store._create_configs_table(db)

        repos = db.execute('SELECT repo, ref, path FROM repos').fetchall()
        all_repos = {(repo, ref): path for repo, ref, path in repos}
        unused_repos = set(all_repos)

        configs_rows = db.execute('SELECT path FROM configs').fetchall()
        configs = [path for path, in configs_rows]

        dead_configs = []
        for config_path in configs:
            try:
                config = load_config(config_path)
            except InvalidConfigError:
                dead_configs.append(config_path)
                continue
            else:
                for repo in config['repos']:
                    _mark_used_repos(store, all_repos, unused_repos, repo)

        paths = [(path,) for path in dead_configs]
        db.executemany('DELETE FROM configs WHERE path = ?', paths)

        db.executemany(
            'DELETE FROM repos WHERE repo = ? and ref = ?',
            sorted(unused_repos),
        )
        for k in unused_repos:
            rmtree(all_repos[k])

        return len(unused_repos)


def gc(store: Store) -> int: