mirror of
https://github.com/Luzifer/browser-privacy.git
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37 lines
844 B
Python
37 lines
844 B
Python
import sys
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import re
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import codecs
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import hashlib
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import base64
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checksumRegexp = re.compile(
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r'^\s*!\s*checksum[\s\-:]+([\w\+\/=]+).*\n', re.I | re.M)
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def addChecksum(data):
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checksum = calculateChecksum(data)
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data = re.sub(checksumRegexp, '', data)
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data = re.sub(r'(\r?\n)', r'\1! Checksum: %s\1' % checksum, data, 1)
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return data
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def calculateChecksum(data):
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data = normalize(data)
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hash = hashlib.md5()
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hash.update(data.encode('utf-8'))
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return base64.b64encode(hash.digest()).decode('utf-8').rstrip('=')
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def normalize(data):
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data = re.sub(r'\r', '', data)
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data = re.sub(r'\n+', '\n', data)
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data = re.sub(checksumRegexp, '', data)
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return data
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if __name__ == '__main__':
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data = addChecksum(open('filters.txt').read())
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with open('filters.txt', 'w') as f:
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f.write(data)
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