147 lines
4.4 KiB
Python
147 lines
4.4 KiB
Python
#!/usr/bin/env python
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# Author: Darko Poljak <darko.poljak@gmail.com>
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# License: GPLv3
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"""Sweeper.
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Usage: sweeper.py [options] [<directory>...]
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Arguments:
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<directory> directory path to scan for files
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Options:
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-h, --help show this screen
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-b <blocksize>, --block-size=<blocksize> size of block used when reading file's
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content [default: 4096]
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-d <hashalg>, --digest-alg=<hashalg> secure hash algorithm [default: md5]
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-a <action>, --action=<action> action on duplicate files
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(print, remove, move) [default: print]
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-m <directory>, --move=<directory> move duplicate files to directory
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(used with move action) [default: ./dups]
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"""
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__author__ = 'Darko Poljak <darko.poljak@gmail.com>'
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__version__ = '0.1.0'
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__license__ = 'GPLv3'
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__all__ = [
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'file_dups', 'rm_file_dups', 'mv_file_dups', 'iter_file_dups'
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]
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import sys
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import hashlib
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import os
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from collections import defaultdict
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# some differences in python versions
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if sys.version_info[0] == 3:
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def _do_encode(buf):
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return buf
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def _dict_iter_items(d):
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return d.items()
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else:
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def _do_encode(buf):
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return buf
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def _dict_iter_items(d):
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return d.iteritems()
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def _filehash(filepath, hashalg, block_size):
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"""Calculate secure hash for given file content using
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specified hash algorithm. Use block_size block size
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when reading file content.
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"""
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md = hashlib.new(hashalg)
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with open(filepath, "rb") as f:
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for buf in iter(lambda: f.read(block_size), b''):
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md.update(_do_encode(buf))
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return md.hexdigest()
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def file_dups(topdirs=['./'], hashalg='md5', block_size=4096):
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"""Find duplicate files in directory list. Return directory
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with keys equal to file hash value and value as list of
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file paths whose content is the same.
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"""
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dups = defaultdict(list)
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for topdir in topdirs:
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for dirpath, dirnames, filenames in os.walk(topdir):
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for fname in filenames:
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fpath = os.path.join(dirpath, fname)
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hexmd = _filehash(fpath, hashalg, block_size)
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dups[hexmd].append(fpath)
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result = {k: v for k, v in _dict_iter_items(dups) if len(v) > 1}
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return result
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def rm_file_dups(topdirs=['./'], hashalg='md5', block_size=4096):
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"""Remove duplicate files found in specified directory list.
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First file in list is kept.
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"""
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for files in do_with_file_dups(topdirs, hashalg, block_size):
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for f in files:
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os.remove(f)
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def mv_file_dups(topdirs=['./'], hashalg='md5', block_size=4096, dest_dir='dups'):
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"""Move duplicate files found in specified directory list.
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First file in list is kept in the original directory.
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"""
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if not os.path.exists(dest_dir):
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os.mkdir(dest_dir)
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if not os.path.isdir(dest_dir):
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raise OSError('%s is not a directory' % dest_dir)
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import shutil
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for files in do_with_file_dups(topdirs, hashalg, block_size):
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for i, f in enumerate(files):
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if i > 0:
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shutil.move(f, dest_dir)
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def iter_file_dups(topdirs=['./'], hashalg='md5', block_size=4096):
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"""Yield list of duplicate files when found in specified directory list.
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"""
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dups = file_dups(topdirs, hashalg, block_size)
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for fpaths in dups.itervalues():
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yield fpaths
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def main():
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"""Main when used as script. See usage (--help).
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"""
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import json
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from docopt import docopt
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arguments = docopt(__doc__)
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topdirs = args['<directory>']
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if not topdirs:
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topdirs = ['./']
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action = args['--action']
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try:
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bs = int(args['--block-size'])
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args['--block-size'] = bs
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except ValueError:
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print('Invalid block size "%s"' % args['--block-size'])
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sys.exit(1)
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if action == 'print':
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dups = file_dups(topdirs, args['--digest-alg'], args['--block-size'])
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print(json.dumps(dict(dups), indent=4))
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elif action == 'move':
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mv_file_dups(topdirs, args['--digest-alg'], args['--block-size'],
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args['--move'])
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elif action == 'remove':
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rm_file_dups(topdirs, args['--digest-alg'], args['--block-size'])
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else:
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print('Invalid action "%s"' % action)
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# if used as script call main function
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if __name__ == '__main__':
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main()
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