regexp search on infinite string?

[Paddy]

On Sep 15, 2:57 am, James Stroud <jstr... at mbi.ucla.edu> wrote:
> Paddy wrote:
> > Lets say i have a generator running that generates successive
> > characters of a 'string'
> >>From what I know, if I want to do a regexp search for a pattern of
> > characters then I would have to 'freeze' the generator  and pass the
> > characters so far to re.search.
> > It is expensive to create successive characters, but caching could be
> > used for past characters. is it possible to wrap the generator in a
> > class, possibly inheriting from string, that would allow the regexp
> > searching of the string but without terminating the generator? In
> > other words duck typing for the usual string object needed by
> > re.search?
>
> > - Paddy.
>
> re.search & re.compile checks for str or unicode types explicitly, so
> you need to turn your data into one of those before using the module.
>
> buffer = []
> while True:
>    buffer.append(mygerator.next())
>    m = re.search(pattern, "".join(buffer))
>    if m:
>      process(m)
>      buffer = []
>
> James

Thanks James.