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""" |
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Modern, cross-platform, pure-Python pyclean implementation. |
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""" |
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import logging |
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try: |
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from pathlib import Path |
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except ImportError: # Python 2.7, PyPy2 |
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from warnings import warn |
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warn("Python 3 required for modern implementation. Python 2 is obsolete.") |
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BYTECODE_FILES = ['.pyc', '.pyo'] |
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BYTECODE_DIRS = ['__pycache__'] |
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DEBRIS_TOPICS = { |
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'build': [ |
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'dist/', |
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'sdist/', |
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'*.egg-info/', |
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], |
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'cache': [ |
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'.cache/', |
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], |
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'coverage': [ |
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'.coverage', |
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'coverage.json', |
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'coverage.xml', |
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'htmlcov/', |
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], |
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'pytest': [ |
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'.pytest_cache/', |
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], |
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'tox': [ |
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'.tox/', |
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], |
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} |
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log = logging.getLogger(__name__) |
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39
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40
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class Runner: # pylint: disable=too-few-public-methods |
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"""Module-level configuration and value store.""" |
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rmdir_count = 0 |
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rmdir_failed = 0 |
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unlink_count = 0 |
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unlink_failed = 0 |
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48
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def remove_file(fileobj): |
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"""Attempt to delete a file object for real.""" |
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log.debug("Deleting file: %s", fileobj) |
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try: |
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fileobj.unlink() |
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Runner.unlink_count += 1 |
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except OSError as err: |
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log.debug("File not deleted. %s", err) |
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Runner.unlink_failed += 1 |
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def remove_directory(dirobj): |
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"""Attempt to remove a directory object for real.""" |
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log.debug("Removing directory: %s", dirobj) |
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try: |
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dirobj.rmdir() |
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Runner.rmdir_count += 1 |
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except OSError as err: |
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log.debug("Directory not removed. %s", err) |
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Runner.rmdir_failed += 1 |
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68
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69
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70
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def print_filename(fileobj): |
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"""Only display the file name, used with --dry-run.""" |
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log.debug("Would delete file: %s", fileobj) |
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Runner.unlink_count += 1 |
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75
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def print_dirname(dirobj): |
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"""Only display the directory name, used with --dry-run.""" |
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log.debug("Would delete directory: %s", dirobj) |
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Runner.rmdir_count += 1 |
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80
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81
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82
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def pyclean(args): |
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"""Cross-platform cleaning of Python bytecode.""" |
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Runner.unlink = print_filename if args.dry_run else remove_file |
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Runner.rmdir = print_dirname if args.dry_run else remove_directory |
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Runner.ignore = args.ignore |
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87
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88
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for dir_name in args.directory: |
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directory = Path(dir_name) |
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log.info("Cleaning directory %s", directory) |
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descend_and_clean(directory, BYTECODE_FILES, BYTECODE_DIRS) |
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93
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94
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for topic in args.debris: |
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remove_debris_for(topic, directory) |
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96
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97
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log.info("Total %d files, %d directories %s.", |
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Runner.unlink_count, Runner.rmdir_count, |
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"would be removed" if args.dry_run else "removed") |
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if Runner.unlink_failed or Runner.rmdir_failed: |
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log.debug("%d files, %d directories could not be removed.", |
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Runner.unlink_failed, Runner.rmdir_failed) |
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105
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106
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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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111
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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 child.name in 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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120
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121
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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", child) |
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126
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127
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def remove_debris_for(topic, directory): |
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128
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""" |
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129
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Clean up debris for a specific topic. |
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130
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""" |
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131
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log.debug("Scanning for debris of %s ...", topic.title()) |
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132
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133
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for path_glob in DEBRIS_TOPICS[topic]: |
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path_list = sorted(directory.glob(path_glob)) |
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135
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136
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for dir_object in path_list: |
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if dir_object.is_file(): |
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Runner.unlink(dir_object) |
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elif dir_object.is_dir(): |
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Runner.rmdir(dir_object) |
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bittner /
pyclean
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