2013-01-23 02:23:14 -08:00
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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import sys
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import hashlib
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from mozpack.packager.unpack import UnpackFinder
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2013-02-02 22:18:55 -08:00
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from collections import OrderedDict
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2013-01-23 02:23:14 -08:00
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'''
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Find files duplicated in a given packaged directory, independently of its
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package format.
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'''
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def find_dupes(source):
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md5s = OrderedDict()
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for p, f in UnpackFinder(source):
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content = f.open().read()
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m = hashlib.md5(content).digest()
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if not m in md5s:
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md5s[m] = (len(content), [])
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md5s[m][1].append(p)
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total = 0
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num_dupes = 0
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for m, (size, paths) in md5s.iteritems():
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if len(paths) > 1:
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print 'Duplicates %d bytes%s:' % (size,
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' (%d times)' % (len(paths) - 1) if len(paths) > 2 else '')
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print ''.join(' %s\n' % p for p in paths)
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total += (len(paths) - 1) * size
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num_dupes += 1
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if num_dupes:
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print "WARNING: Found %d duplicated files taking %d bytes" % \
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(num_dupes, total) + " (uncompressed)"
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def main():
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if len(sys.argv) != 2:
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import os
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print >>sys.stderr, "Usage: %s directory" % \
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os.path.basename(sys.argv[0])
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sys.exit(1)
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find_dupes(sys.argv[1])
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if __name__ == "__main__":
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main()
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