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#!/usr/bin/env python
import os
import sys
from string import Template
import argparse
import hashlib
if __name__ == "__main__":
parser = argparse.ArgumentParser(description='Rename files based on content.')
parser.add_argument('files', metavar='FILE', type=str, nargs='+',
help='Files to rename')
parser.add_argument('-m', '--mask', nargs='?',
help='File destination mask', default='${hash}.${ext}')
parser.add_argument('-p', '--pretend', action='store_true',
help='Do not rename, just print')
args = parser.parse_args()
print 'Renaming with mask: %s' % args.mask
mask = Template(args.mask)
for f in args.files:
if not os.path.exists(f):
print >>sys.stderr, 'File %s does not exists.' % f
else:
with open(f) as fp:
h = hashlib.sha1(fp.read()).hexdigest()
ext = os.path.splitext(f)[1][1:]
name = mask.substitute(hash=h, ext=ext)
dest = os.path.join(os.path.dirname(f), name)
if os.path.basename(f) == name:
print 'OK %s' % name
else:
print "`%s' -> `%s'" % (f, dest)
if os.path.exists(dest):
print >>sys.stderr, 'Destination %s already exists.' % dest
elif not args.pretend:
os.rename(f, dest)
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