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Diffstat (limited to 'utilities/hammington2416.py')
| -rw-r--r-- | utilities/hammington2416.py | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/utilities/hammington2416.py b/utilities/hammington2416.py deleted file mode 100644 index 8e60a33..0000000 --- a/utilities/hammington2416.py +++ /dev/null @@ -1,31 +0,0 @@ -#!/usr/bin/python - -import sys - -_hammingCalculateParityLowNibble = [0, 3, 5, 6, 6, 5, 3, 0, 7, 4, 2, 1, 1, 2, 4, 7] -_hammingCalculateParityHighNibble = [0, 9, 10, 3, 11, 2, 1, 8, 12, 5, 6, 15, 7, 14, 13, 4] - -def HammingCalculateParity128(byte): - return _hammingCalculateParityLowNibble[byte&0x0F] ^ _hammingCalculateParityHighNibble[byte >> 4] - -def HammingCalculateParity2416(first, second): - return HammingCalculateParity128(second) << 4 | HammingCalculateParity128(first) - -output = "" -bytepos = 0 -oldbyte = None - -# Read bytewise -f = open(sys.argv[1]) -for byte in f.read(): - output += byte - oldbyte = byte - bytepos += 1 - if bytepos == 2: - bytepos = 0 - output += str(HammingCalculateParity2416(ord(oldbyte), ord(byte))) -if bytepos == 1: - output += "\x00" - output += str(HammingCalculateParity2416(ord(oldbyte), ord("\x00"))) - -print output
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