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swh/storage/algos/dir_iterators.py
| # Copyright (C) 2018 The Software Heritage developers | # Copyright (C) 2018 The Software Heritage developers | ||||
| # See the AUTHORS file at the top-level directory of this distribution | # See the AUTHORS file at the top-level directory of this distribution | ||||
| # License: GNU General Public License version 3, or any later version | # License: GNU General Public License version 3, or any later version | ||||
| # See top-level LICENSE file for more information | # See top-level LICENSE file for more information | ||||
| # Utility module to iterate on directory trees. | # Utility module to iterate on directory trees. | ||||
| # The implementation is inspired from the work of Alberto Cortés | # The implementation is inspired from the work of Alberto Cortés | ||||
| # for the go-git project. For more details, you can refer to: | # for the go-git project. For more details, you can refer to: | ||||
| # - this blog post: https://blog.sourced.tech/post/difftree/ | # - this blog post: https://blog.sourced.tech/post/difftree/ | ||||
| # - the reference implementation in go: | # - the reference implementation in go: | ||||
| # https://github.com/src-d/go-git/tree/master/utils/merkletrie | # https://github.com/src-d/go-git/tree/master/utils/merkletrie | ||||
| from enum import Enum | from enum import Enum | ||||
| from swh.model.hashutil import hash_to_bytes | from swh.model.model import Directory | ||||
| from swh.model.identifiers import directory_identifier | |||||
| # get the hash identifier for an empty directory | # get the hash identifier for an empty directory | ||||
| _empty_dir_hash = hash_to_bytes(directory_identifier({"entries": []})) | _empty_dir_hash = Directory(entries=()).id | ||||
| def _get_dir(storage, dir_id): | def _get_dir(storage, dir_id): | ||||
| """ | """ | ||||
| Return directory data from swh storage. | Return directory data from swh storage. | ||||
| """ | """ | ||||
| return storage.directory_ls(dir_id) if dir_id else [] | return storage.directory_ls(dir_id) if dir_id else [] | ||||
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