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94 lines
2.2 KiB
Python
94 lines
2.2 KiB
Python
import pathlib
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import functools
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from typing import Dict, Union
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from typing import runtime_checkable
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from typing import Protocol
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####
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# from jaraco.path 3.7.1
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class Symlink(str):
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"""
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A string indicating the target of a symlink.
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"""
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FilesSpec = Dict[str, Union[str, bytes, Symlink, 'FilesSpec']]
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@runtime_checkable
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class TreeMaker(Protocol):
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def __truediv__(self, *args, **kwargs): ... # pragma: no cover
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def mkdir(self, **kwargs): ... # pragma: no cover
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def write_text(self, content, **kwargs): ... # pragma: no cover
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def write_bytes(self, content): ... # pragma: no cover
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def symlink_to(self, target): ... # pragma: no cover
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def _ensure_tree_maker(obj: Union[str, TreeMaker]) -> TreeMaker:
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return obj if isinstance(obj, TreeMaker) else pathlib.Path(obj) # type: ignore[return-value]
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def build(
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spec: FilesSpec,
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prefix: Union[str, TreeMaker] = pathlib.Path(), # type: ignore[assignment]
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):
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"""
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Build a set of files/directories, as described by the spec.
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Each key represents a pathname, and the value represents
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the content. Content may be a nested directory.
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>>> spec = {
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... 'README.txt': "A README file",
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... "foo": {
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... "__init__.py": "",
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... "bar": {
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... "__init__.py": "",
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... },
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... "baz.py": "# Some code",
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... "bar.py": Symlink("baz.py"),
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... },
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... "bing": Symlink("foo"),
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... }
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>>> target = getfixture('tmp_path')
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>>> build(spec, target)
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>>> target.joinpath('foo/baz.py').read_text(encoding='utf-8')
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'# Some code'
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>>> target.joinpath('bing/bar.py').read_text(encoding='utf-8')
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'# Some code'
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"""
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for name, contents in spec.items():
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create(contents, _ensure_tree_maker(prefix) / name)
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@functools.singledispatch
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def create(content: Union[str, bytes, FilesSpec], path):
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path.mkdir(exist_ok=True)
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build(content, prefix=path) # type: ignore[arg-type]
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@create.register
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def _(content: bytes, path):
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path.write_bytes(content)
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@create.register
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def _(content: str, path):
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path.write_text(content, encoding='utf-8')
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@create.register
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def _(content: Symlink, path):
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path.symlink_to(content)
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# end from jaraco.path
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####
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