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#!/usr/bin/env python3
#
# __init__.py
"""
``pyproject.toml`` configuration parsing.
"""
#
# Copyright © 2021 Dominic Davis-Foster <dominic@davis-foster.co.uk>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
# DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
# OR OTHER DEALINGS IN THE SOFTWARE.
#
# stdlib
import re
from typing import Any, Dict
# 3rd party
import dom_toml
import dom_toml.decoder
from dom_toml.parser import BadConfigError
from domdf_python_tools.iterative import natmin
from domdf_python_tools.paths import PathPlus, in_directory
from domdf_python_tools.typing import PathLike
from packaging.requirements import InvalidRequirement
from packaging.specifiers import Specifier
from shippinglabel.requirements import combine_requirements, read_requirements
# this package
from whey.config.pep621 import PEP621Parser
from whey.config.whey import WheyParser, backfill_classifiers
__all__ = (
"PEP621Parser",
"WheyParser",
"backfill_classifiers",
"load_toml",
)
_name_to_package_re = re.compile("-(?!stubs)")
def _get_default_package(name: str) -> str:
return _name_to_package_re.sub('_', name.split('.', 1)[0])
def load_toml(filename: PathLike) -> Dict[str, Any]: # TODO: TypedDict
"""
Load the ``whey`` configuration mapping from the given TOML file.
:param filename:
"""
filename = PathPlus(filename)
project_dir = filename.parent
config = dom_toml.load(filename, decoder=dom_toml.decoder.TomlPureDecoder)
parsed_config = {}
tool_table = config.get("tool", {})
with in_directory(project_dir):
parsed_config.update(WheyParser().parse(tool_table.get("whey", {}), set_defaults=True))
if "project" in config:
parsed_config.update(PEP621Parser().parse(config["project"], set_defaults=True))
else:
raise KeyError(f"'project' table not found in '{filename!s}'")
if parsed_config.get("readme", None) is not None:
parsed_config["readme"] = parsed_config["readme"].resolve()
if parsed_config.get("license", None) is not None:
parsed_config["license"] = parsed_config["license"].resolve()
# set defaults
parsed_config.setdefault("package", _get_default_package(config["project"]["name"]))
dynamic_fields = parsed_config.get("dynamic", [])
if "classifiers" in dynamic_fields:
dynamic_fields.remove("classifiers")
parsed_config["classifiers"] = backfill_classifiers(parsed_config)
if "requires-python" in dynamic_fields:
if parsed_config["python-versions"]:
dynamic_fields.remove("requires-python")
parsed_config["requires-python"] = Specifier(f">={natmin(parsed_config['python-versions'])}")
else:
raise BadConfigError(
"'requires-python' was listed in 'project.dynamic', "
"but whey cannot determine the minimum supported Python version. \n"
"Set 'tool.whey.python-versions' to a list of supported Python versions to fix this."
)
if "dependencies" in dynamic_fields:
dynamic_fields.remove("dependencies")
if (project_dir / "requirements.txt").is_file():
dependencies, comments, invalid = read_requirements(project_dir / "requirements.txt", include_invalid=True)
for bad_string in invalid:
raise InvalidRequirement(bad_string)
parsed_config["dependencies"] = sorted(combine_requirements(dependencies))
else:
raise BadConfigError(
"'project.dependencies' was listed as a dynamic field "
"but no 'requirements.txt' file was found."
)
parsed_config["dynamic"] = dynamic_fields
if "base-classifiers" in parsed_config:
del parsed_config["base-classifiers"]
return parsed_config
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