mirror of
https://github.com/PiBrewing/craftbeerpi4.git
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145 lines
5 KiB
Python
145 lines
5 KiB
Python
"""Contains all logic related to placing an import within a certain section."""
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import importlib
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from fnmatch import fnmatch
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from functools import lru_cache
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from pathlib import Path
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from typing import FrozenSet, Iterable, Optional, Tuple
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from isort import sections
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from isort.settings import DEFAULT_CONFIG, Config
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from isort.utils import exists_case_sensitive
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LOCAL = "LOCALFOLDER"
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def module(name: str, config: Config = DEFAULT_CONFIG) -> str:
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"""Returns the section placement for the given module name."""
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return module_with_reason(name, config)[0]
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@lru_cache(maxsize=1000)
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def module_with_reason(name: str, config: Config = DEFAULT_CONFIG) -> Tuple[str, str]:
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"""Returns the section placement for the given module name alongside the reasoning."""
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return (
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_forced_separate(name, config)
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or _local(name, config)
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or _known_pattern(name, config)
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or _src_path(name, config)
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or (config.default_section, "Default option in Config or universal default.")
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)
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def _forced_separate(name: str, config: Config) -> Optional[Tuple[str, str]]:
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for forced_separate in config.forced_separate:
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# Ensure all forced_separate patterns will match to end of string
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path_glob = forced_separate
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if not forced_separate.endswith("*"):
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path_glob = "%s*" % forced_separate
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if fnmatch(name, path_glob) or fnmatch(name, "." + path_glob):
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return (forced_separate, f"Matched forced_separate ({forced_separate}) config value.")
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return None
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def _local(name: str, config: Config) -> Optional[Tuple[str, str]]:
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if name.startswith("."):
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return (LOCAL, "Module name started with a dot.")
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return None
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def _known_pattern(name: str, config: Config) -> Optional[Tuple[str, str]]:
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parts = name.split(".")
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module_names_to_check = (".".join(parts[:first_k]) for first_k in range(len(parts), 0, -1))
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for module_name_to_check in module_names_to_check:
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for pattern, placement in config.known_patterns:
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if placement in config.sections and pattern.match(module_name_to_check):
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return (placement, f"Matched configured known pattern {pattern}")
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return None
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def _src_path(
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name: str,
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config: Config,
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src_paths: Optional[Iterable[Path]] = None,
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prefix: Tuple[str, ...] = (),
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) -> Optional[Tuple[str, str]]:
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if src_paths is None:
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src_paths = config.src_paths
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root_module_name, *nested_module = name.split(".", 1)
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new_prefix = prefix + (root_module_name,)
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namespace = ".".join(new_prefix)
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for src_path in src_paths:
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module_path = (src_path / root_module_name).resolve()
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if not prefix and not module_path.is_dir() and src_path.name == root_module_name:
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module_path = src_path.resolve()
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if nested_module and (
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namespace in config.namespace_packages
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or (
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config.auto_identify_namespace_packages
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and _is_namespace_package(module_path, config.supported_extensions)
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)
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):
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return _src_path(nested_module[0], config, (module_path,), new_prefix)
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if (
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_is_module(module_path)
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or _is_package(module_path)
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or _src_path_is_module(src_path, root_module_name)
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):
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return (sections.FIRSTPARTY, f"Found in one of the configured src_paths: {src_path}.")
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return None
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def _is_module(path: Path) -> bool:
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return (
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exists_case_sensitive(str(path.with_suffix(".py")))
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or any(
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exists_case_sensitive(str(path.with_suffix(ext_suffix)))
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for ext_suffix in importlib.machinery.EXTENSION_SUFFIXES
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)
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or exists_case_sensitive(str(path / "__init__.py"))
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)
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def _is_package(path: Path) -> bool:
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return exists_case_sensitive(str(path)) and path.is_dir()
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def _is_namespace_package(path: Path, src_extensions: FrozenSet[str]) -> bool:
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if not _is_package(path):
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return False
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init_file = path / "__init__.py"
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if not init_file.exists():
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filenames = [
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filepath
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for filepath in path.iterdir()
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if filepath.suffix.lstrip(".") in src_extensions
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or filepath.name.lower() in ("setup.cfg", "pyproject.toml")
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]
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if filenames:
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return False
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else:
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with init_file.open() as open_init_file:
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file_start = open_init_file.read(4096)
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if (
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"__import__('pkg_resources').declare_namespace(__name__)" not in file_start
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and '__import__("pkg_resources").declare_namespace(__name__)' not in file_start
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and "__path__ = __import__('pkgutil').extend_path(__path__, __name__)"
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not in file_start
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and '__path__ = __import__("pkgutil").extend_path(__path__, __name__)'
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not in file_start
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):
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return False
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return True
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def _src_path_is_module(src_path: Path, module_name: str) -> bool:
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return (
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module_name == src_path.name and src_path.is_dir() and exists_case_sensitive(str(src_path))
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)
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