index.py 文件源码

def commit_tree(object_store, blobs):
    """Commit a new tree.

    :param object_store: Object store to add trees to
    :param blobs: Iterable over blob path, sha, mode entries
    :return: SHA1 of the created tree.
    """

    trees = {b'': {}}

    def add_tree(path):
        if path in trees:
            return trees[path]
        dirname, basename = pathsplit(path)
        t = add_tree(dirname)
        assert isinstance(basename, bytes)
        newtree = {}
        t[basename] = newtree
        trees[path] = newtree
        return newtree

    for path, sha, mode in blobs:
        tree_path, basename = pathsplit(path)
        tree = add_tree(tree_path)
        tree[basename] = (mode, sha)

    def build_tree(path):
        tree = Tree()
        for basename, entry in trees[path].items():
            if isinstance(entry, dict):
                mode = stat.S_IFDIR
                sha = build_tree(pathjoin(path, basename))
            else:
                (mode, sha) = entry
            tree.add(basename, mode, sha)
        object_store.add_object(tree)
        return tree.id
    return build_tree(b'')