74 lines
2.2 KiB
Python
74 lines
2.2 KiB
Python
import argparse
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import collections
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import os
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import shutil
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import sys
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from voussoirkit import passwordy
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from voussoirkit import pathclass
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from voussoirkit import pipeable
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from voussoirkit import spinal
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from voussoirkit import vlogging
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from voussoirkit import winglob
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log = vlogging.getLogger(__name__, 'sole_subdir_lift')
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def main(argv):
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argv = vlogging.set_level_by_argv(log, argv)
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def sole_lift_argparse(args):
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starting = pathclass.Path(args.starting)
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queue = collections.deque()
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queue.extend(spinal.walk(starting, yield_files=False, yield_directories=True))
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while len(queue) > 0:
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directory = queue.popleft()
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if not directory.exists:
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log.debug('%s no longer exists.', directory)
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continue
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if directory not in starting:
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log.debug('%s is outside of starting.', directory)
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continue
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children = directory.listdir()
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child_count = len(children)
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if child_count != 1:
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log.debug('%s has %d children.', directory, child_count)
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continue
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child = children[0]
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if not child.is_dir:
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log.debug('%s contains a file, not a dir.', directory)
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continue
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log.info('Lifting contents of %s.', child.absolute_path)
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# child is renamed to random hex so that the grandchildren we are about
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# to lift don't have name conflicts with the child dir itself.
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# Consider .\abc\abc where the grandchild can't be moved.
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temp_dir = directory.with_child(passwordy.urandom_hex(32))
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os.rename(child.absolute_path, temp_dir.absolute_path)
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for grandchild in temp_dir.listdir():
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shutil.move(grandchild.absolute_path, directory.absolute_path)
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if temp_dir.listdir():
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raise Exception()
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os.rmdir(temp_dir.absolute_path)
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queue.append(directory.parent)
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def main(argv):
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argv = vlogging.set_level_by_argv(log, argv)
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument('starting', nargs='?', default='.')
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parser.set_defaults(func=sole_lift_argparse)
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args = parser.parse_args(argv)
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return args.func(args)
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if __name__ == '__main__':
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raise SystemExit(main(sys.argv[1:]))
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