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Title: Hex dumper
Submitter: Sébastien Keim
(other recipes)
Last Updated: 2002/08/05
Version no: 1.0
Category:
Text
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 5 vote(s)
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Description:
Hexadecimal display of a byte stream
Source: Text Source
FILTER=''.join([(len(repr(chr(x)))==3) and chr(x) or '.' for x in range(256)])
def dump(src, length=8):
N=0; result=''
while src:
s,src = src[:length],src[length:]
hexa = ' '.join(["%02X"%ord(x) for x in s])
s = s.translate(FILTER)
result += "%04X %-*s %s\n" % (N, length*3, hexa, s)
N+=length
return result
s=("This 10 line function is just a sample of pyhton power "
"for string manipulations.\n"
"The code is \x07even\x08 quite readable!")
print dump(s)
Discussion:
This function produce a classic 3 columns hex dump of a string.
* The first column print the offset in hexadecimal.
* The second colmun print the hexadecimal byte values.
* The third column print ASCII values or a dot for non printable characters.
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Number of comments: 1
Small Improvements, Raymond Hettinger, 2005/09/24
def dump2(src, length=8):
result=[]
for i in xrange(0, len(src), length):
s = src[i:i+length]
hexa = ' '.join(["%02X"%ord(x) for x in s])
printable = s.translate(FILTER)
result.append("%04X %-*s %s\n" % (i, length*3, hexa, printable))
return ''.join(result)
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