[EMAIL PROTECTED] wrote:
Kris Kennaway:
I am trying to parse a bit-stream file format (bzip2) that does not have
byte-aligned record boundaries, so I need to do efficient matching of
bit substrings at arbitrary bit offsets.
Is there a package that can do this?
You may take a look at Hachoir or some other modules:
http://hachoir.org/wiki/hachoir-core
http://pypi.python.org/pypi/construct/2.00
Thanks. hachoir also comes close, but it also doesnt seem to be able to
match substrings at a bit level (e.g. the included bzip2 parser just
reads the header and hands the entire file off to libbzip2 to extract
data from).
construct exports a bit stream but it's again pure python and matching
substrings will be slow. It will need C support to do that efficiently.
http://pypi.python.org/pypi/FmtRW/20040603
Etc. More:
http://pypi.python.org/pypi?%3Aaction=search&term=binary
Unfortunately I didnt find anything else useful here yet :(
Kris
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