| # Copyright 2022 The ChromiumOS Authors |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """Provides utility for formatting Rust code.""" |
| |
| import os |
| from pathlib import Path |
| from typing import Optional, Union |
| |
| from chromite.lib import cros_build_lib |
| |
| |
| def Data( |
| data: str, |
| path: Optional[Union[str, os.PathLike]] = None, |
| ) -> str: |
| """Clean up Rust format problems in |data|. |
| |
| Args: |
| data: The file content to lint. |
| path: The file name for diagnostics/configs/etc... |
| |
| Returns: |
| Formatted data. |
| """ |
| if path is not None: |
| # The path may not exist since the file can be from git history. Look up |
| # for existing directory. |
| path = Path(path).resolve() |
| while not path.is_dir(): |
| path = path.parent |
| result = cros_build_lib.run( |
| ["rustfmt", "--edition", "2018"], |
| capture_output=True, |
| cwd=path, |
| input=data, |
| encoding="utf-8", |
| ) |
| return result.stdout |
