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# SPDX-FileCopyrightText: 2020 Peter Bittner <[email protected]> |
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# |
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# SPDX-License-Identifier: GPL-3.0-or-later |
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"""Directory traversal and ignore pattern matching.""" |
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import logging |
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import os |
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from pathlib import Path |
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from .runner import Runner |
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log = logging.getLogger(__name__) |
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def normalize(path_pattern: str) -> str: |
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""" |
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Normalize path separators in a pattern for cross-platform support. |
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On Windows, both forward slash and backslash are valid path separators. |
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On Unix/Posix, only forward slash is valid (backslash can be part of filename). |
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""" |
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return path_pattern.replace(os.sep, os.altsep or os.sep) |
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def should_ignore(path: Path, ignore_patterns: list[str]) -> bool: |
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""" |
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Check if a path should be ignored based on ignore patterns. |
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Patterns can be: |
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- Simple names like 'bar': matches any directory with that name |
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- Paths like 'foo/bar': matches 'bar' directory inside 'foo' directory |
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and also ignores everything inside that directory |
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""" |
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if not ignore_patterns: |
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return False |
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for pattern in ignore_patterns: |
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pattern_parts = Path(normalize(pattern)).parts |
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if len(pattern_parts) > 1: |
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if len(path.parts) < len(pattern_parts): |
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continue |
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for i in range(len(path.parts) - len(pattern_parts) + 1): |
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path_slice = path.parts[i : i + len(pattern_parts)] |
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if path_slice == pattern_parts: |
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return True |
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elif path.name == pattern: |
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return True |
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return False |
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def descend_and_clean(directory, file_types, dir_names): |
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""" |
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Walk and descend a directory tree, cleaning up files of a certain type |
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along the way. Only delete directories if they are empty, in the end. |
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""" |
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for child in sorted(directory.iterdir()): |
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if child.is_file(): |
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if child.suffix in file_types: |
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Runner.unlink(child) |
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elif child.is_dir(): |
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if should_ignore(child, Runner.ignore): |
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log.debug('Skipping %s', child) |
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else: |
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descend_and_clean(child, file_types, dir_names) |
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if child.name in dir_names: |
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Runner.rmdir(child) |
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else: |
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log.debug('Ignoring %s (neither a file nor a folder)', child) |
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bittner /
pyclean
