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hexdump implementation in Python
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| #!/usr/bin/env python3 | |
| def hexdump(src, length=16, sep='.'): | |
| """ | |
| >>> print(hexdump('\x01\x02\x03\x04AAAAAAAAAAAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBBBBB')) | |
| 00000000: 01 02 03 04 41 41 41 41 41 41 41 41 41 41 41 41 |....AAAAAAAAAAAA| | |
| 00000010: 41 41 41 41 41 41 41 41 41 41 41 41 41 41 42 42 |AAAAAAAAAAAAAABB| | |
| 00000020: 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 |BBBBBBBBBBBBBBBB| | |
| 00000030: 42 42 42 42 42 42 42 42 |BBBBBBBB| | |
| >>> | |
| >>> print(hexdump(b'\x01\x02\x03\x04AAAAAAAAAAAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBBBBB')) | |
| 00000000: 01 02 03 04 41 41 41 41 41 41 41 41 41 41 41 41 |....AAAAAAAAAAAA| | |
| 00000010: 41 41 41 41 41 41 41 41 41 41 41 41 41 41 42 42 |AAAAAAAAAAAAAABB| | |
| 00000020: 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 |BBBBBBBBBBBBBBBB| | |
| 00000030: 42 42 42 42 42 42 42 42 |BBBBBBBB| | |
| """ | |
| FILTER = ''.join([(len(repr(chr(x))) == 3) and chr(x) or sep for x in range(256)]) | |
| lines = [] | |
| for c in range(0, len(src), length): | |
| chars = src[c:c+length] | |
| hexstr = ' '.join(["%02x" % ord(x) for x in chars]) if type(chars) is str else ' '.join(['{:02x}'.format(x) for x in chars]) | |
| if len(hexstr) > 24: | |
| hexstr = "%s %s" % (hexstr[:24], hexstr[24:]) | |
| printable = ''.join(["%s" % ((ord(x) <= 127 and FILTER[ord(x)]) or sep) for x in chars]) if type(chars) is str else ''.join(['{}'.format((x <= 127 and FILTER[x]) or sep) for x in chars]) | |
| lines.append("%08x: %-*s |%s|" % (c, length*3, hexstr, printable)) | |
| return '\n'.join(lines) | |
| if __name__ == "__main__": | |
| print(hexdump('\x01\x02\x03\x04AAAAAAAAAAAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBBBBB')) | |
| print(hexdump(b'\x01\x02\x03\x04AAAAAAAAAAAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBBBBB')) |
A huge thank you for this gist. You've saved me a whole lot of time in debugging effort.
Love it!
Thanks, so handy!!
Same script with full support for python3 at https://gist.github.com/ImmortalPC/c340564823f283fe530b
Fixed this to print backslash instead of sep:
https://gist.github.com/JonathonReinhart/509f9a8094177d050daa84efcd4486cb
A tweak on this for Python3, assuming input is bytes, using .format() and padding spaces into the printable column where the buffer ends out of bytes:
https://gist.github.com/mzpqnxow/a368c6cd9fae97b87ef25f475112c84c
Really great snippet! Thank you! Just a small feedback, it would be better to rename hex to something else since hex is a python built-in function.
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Based on @sbz's implementation here: https://gist.github.com/sbz/1080258
[15/Oct/2019] Changed variable name from "hex" to "hexstr" (now a concatenation of two builtins :) thanks to @chrispetrou for the suggestion)
[03/Sep/2019] Updated to be compatible with Python 3 and added support for both "str" and "bytes" input (thanks to @mzpqnxow's implementation here: https://gist.github.com/mzpqnxow/a368c6cd9fae97b87ef25f475112c84c)