| # Copyright 2021 The Pigweed Authors |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| # use this file except in compliance with the License. You may obtain a copy of |
| # the License at |
| # |
| # https://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| # License for the specific language governing permissions and limitations under |
| # the License. |
| """Dataclass for a Python package.""" |
| |
| import configparser |
| from contextlib import contextmanager |
| import copy |
| from dataclasses import dataclass |
| import json |
| import os |
| from pathlib import Path |
| import shutil |
| from typing import Dict, List, Optional, Iterable |
| |
| import setuptools # type: ignore |
| |
| |
| @contextmanager |
| def change_working_dir(directory: Path): |
| original_dir = Path.cwd() |
| try: |
| os.chdir(directory) |
| yield directory |
| finally: |
| os.chdir(original_dir) |
| |
| |
| @dataclass |
| class PythonPackage: |
| """Class to hold a single Python package's metadata.""" |
| |
| sources: List[Path] |
| setup_sources: List[Path] |
| tests: List[Path] |
| inputs: List[Path] |
| gn_target_name: Optional[str] = None |
| generate_setup: Optional[Dict] = None |
| config: Optional[configparser.ConfigParser] = None |
| |
| @staticmethod |
| def from_dict(**kwargs) -> 'PythonPackage': |
| """Build a PythonPackage instance from a dictionary.""" |
| transformed_kwargs = copy.copy(kwargs) |
| |
| # Transform string filenames to Paths |
| for attribute in ['sources', 'tests', 'inputs', 'setup_sources']: |
| transformed_kwargs[attribute] = [ |
| Path(s) for s in kwargs[attribute] |
| ] |
| |
| return PythonPackage(**transformed_kwargs) |
| |
| def __post_init__(self): |
| # Read the setup.cfg file if possible |
| if not self.config: |
| self.config = self._load_config() |
| |
| @property |
| def setup_dir(self) -> Path: |
| assert len(self.setup_sources) > 0 |
| # Assuming all setup_source files live in the same parent directory. |
| return self.setup_sources[0].parent |
| |
| @property |
| def setup_py(self) -> Path: |
| setup_py = [ |
| setup_file for setup_file in self.setup_sources |
| if str(setup_file).endswith('setup.py') |
| ] |
| # setup.py will not exist for GN generated Python packages |
| assert len(setup_py) == 1 |
| return setup_py[0] |
| |
| @property |
| def setup_cfg(self) -> Path: |
| setup_cfg = [ |
| setup_file for setup_file in self.setup_sources |
| if str(setup_file).endswith('setup.cfg') |
| ] |
| assert len(setup_cfg) == 1 |
| return setup_cfg[0] |
| |
| @property |
| def package_name(self) -> str: |
| assert self.config |
| return self.config['metadata']['name'] |
| |
| @property |
| def package_dir(self) -> Path: |
| return self.setup_cfg.parent / self.package_name |
| |
| def _load_config(self) -> Optional[configparser.ConfigParser]: |
| config = configparser.ConfigParser() |
| # Check for a setup.cfg and load that config. |
| if self.setup_cfg: |
| with self.setup_cfg.open() as config_file: |
| config.read_file(config_file) |
| return config |
| return None |
| |
| def setuptools_build_with_base(self, |
| build_base: Path, |
| include_tests: bool = False) -> Path: |
| # Create the lib install dir in case it doesn't exist. |
| lib_dir_path = build_base / 'lib' |
| lib_dir_path.mkdir(parents=True, exist_ok=True) |
| |
| starting_directory = Path.cwd() |
| # cd to the location of setup.py |
| with change_working_dir(self.setup_dir): |
| # Run build with temp build-base location |
| # Note: New files will be placed inside lib_dir_path |
| setuptools.setup(script_args=[ |
| 'build', |
| '--force', |
| '--build-base', |
| str(build_base), |
| ]) |
| |
| new_pkg_dir = lib_dir_path / self.package_name |
| # If tests should be included, copy them to the tests dir |
| if include_tests and self.tests: |
| test_dir_path = new_pkg_dir / 'tests' |
| test_dir_path.mkdir(parents=True, exist_ok=True) |
| |
| for test_source_path in self.tests: |
| shutil.copy(starting_directory / test_source_path, |
| test_dir_path) |
| |
| return lib_dir_path |
| |
| def setuptools_develop(self) -> None: |
| with change_working_dir(self.setup_dir): |
| setuptools.setup(script_args=['develop']) |
| |
| def setuptools_install(self) -> None: |
| with change_working_dir(self.setup_dir): |
| setuptools.setup(script_args=['install']) |
| |
| |
| def load_packages(input_list_files: Iterable[Path]) -> List[PythonPackage]: |
| """Load Python package metadata and configs.""" |
| |
| packages = [] |
| for input_path in input_list_files: |
| |
| with input_path.open() as input_file: |
| # Each line contains the path to a json file. |
| for json_file in input_file.readlines(): |
| # Load the json as a dict. |
| json_file_path = Path(json_file.strip()).resolve() |
| with json_file_path.open() as json_fp: |
| json_dict = json.load(json_fp) |
| |
| packages.append(PythonPackage.from_dict(**json_dict)) |
| return packages |