On 30Mar2019 10:29, Paul Moore <p.f.mo...@gmail.com> wrote:
On Fri, 29 Mar 2019 at 23:21, Cameron Simpson <c...@cskk.id.au> wrote:
On 27Mar2019 18:41, Paul Moore <p.f.mo...@gmail.com> wrote:
>I'm looking for a library that lets me parse binary data structures.
>The stdlib struct module is fine for simple structures, but when it
>gets to more complicated cases, you end up doing a lot of the work by
>hand (which isn't that hard, and is generally perfectly viable, but
>I'm feeling lazy ;-))
I wrote my own: cs.binary, available on PyPI. The PyPI page has is
module docs, which I think are ok:
https://pypi.org/project/cs.binary/
Nice, thanks - that's exactly the sort of pointer I was looking for.
I'll take a look and see how it works for my use case.
I'd be happy to consider adapting some stuff for your use cases; as you
may imagine it is written to my use cases.
Also, I should point you at the cs.binary.structtuple factory, which
makes a class for those structures trivially defined with a struct
format string. As it uses struct for the parse step and transcribe
steps, so it should be performant. Here's an example from the
cs.iso14496 module:
PDInfo = structtuple('PDInfo', '>LL', 'rate initial_delay')
which makes a PDInfo class for 2 big endian unsigned longs with .rate
and .initial_delay attributes.
Cheers,
Cameron Simpson <c...@cskk.id.au>
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