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34a04943ab
Former-commit-id: a8b456401859802fe5d19b7d12a41033f2ed3e44 Former-commit-id: 4f4a976e6f295f45519744216704c864afb6d621
21 lines
347 B
Python
21 lines
347 B
Python
# usage: pypy scriptname inputfile outputfile
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import sys
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def bandlimit(i):
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key = (i & 0xF0) >> 4
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return (key << 4) | key
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outcontents = []
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infile = open(sys.argv[1], "rb").read()
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for i in infile:
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#print(ord(i))
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outcontents.append(bandlimit(ord(i)))
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outfile = open(sys.argv[2], "wb")
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outfile.write(bytearray(outcontents))
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outfile.close() |