Henry Schreiner
7c4bbf8cb3
Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com> Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>
81 lines
2.5 KiB
Python
81 lines
2.5 KiB
Python
from __future__ import annotations
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import ast
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import configparser
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import contextlib
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import sys
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from pathlib import Path
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from typing import Any
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if sys.version_info >= (3, 11):
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import tomllib
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else:
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import tomli as tomllib
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if sys.version_info < (3, 8):
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Constant = ast.Str
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def get_constant(x: ast.Str) -> str:
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return x.s
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else:
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Constant = ast.Constant
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def get_constant(x: ast.Constant) -> Any:
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return x.value
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class Analyzer(ast.NodeVisitor):
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def __init__(self) -> None:
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self.requires_python: str | None = None
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def visit(self, node: ast.AST) -> None:
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for inner_node in ast.walk(node):
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for child in ast.iter_child_nodes(inner_node):
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child.parent = inner_node # type: ignore[attr-defined]
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super().visit(node)
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def visit_keyword(self, node: ast.keyword) -> None:
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self.generic_visit(node)
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if node.arg == "python_requires":
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# Must not be nested in an if or other structure
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# This will be Module -> Expr -> Call -> keyword
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if not hasattr(node.parent.parent.parent, "parent") and isinstance( # type: ignore[attr-defined]
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node.value, Constant
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):
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self.requires_python = get_constant(node.value)
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def setup_py_python_requires(content: str) -> str | None:
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try:
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tree = ast.parse(content)
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analyzer = Analyzer()
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analyzer.visit(tree)
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return analyzer.requires_python or None
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except Exception: # pylint: disable=broad-except
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return None
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def get_requires_python_str(package_dir: Path) -> str | None:
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"""Return the python requires string from the most canonical source available, or None"""
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# Read in from pyproject.toml:project.requires-python
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with contextlib.suppress(FileNotFoundError):
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with (package_dir / "pyproject.toml").open("rb") as f1:
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info = tomllib.load(f1)
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with contextlib.suppress(KeyError, IndexError, TypeError):
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return str(info["project"]["requires-python"])
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# Read in from setup.cfg:options.python_requires
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config = configparser.ConfigParser()
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with contextlib.suppress(FileNotFoundError):
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config.read(package_dir / "setup.cfg")
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with contextlib.suppress(KeyError, IndexError, TypeError):
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return str(config["options"]["python_requires"])
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with contextlib.suppress(FileNotFoundError):
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with (package_dir / "setup.py").open(encoding="utf8") as f2:
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return setup_py_python_requires(f2.read())
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return None
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