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