To re or not to re ... ( word wrap function?)

[Ignacio Vazquez-Abrams]

On Sat, 22 Sep 2001, Boyd Roberts wrote:

> "Ignacio Vazquez-Abrams" <ignacio at openservices.net> a écrit dans le message news:
> mailman.1001111905.15419.python-list at python.org...
> > Yup. The following will do an entire document at once:
> >
> > ---
> > def wordwrap(text, width):
>
> i hope you have small documents or a _large_ amount or ram;  your
> solution will not scale.

Well, I think "will" was the wrong word. I should have said "can". It is
entirely possible to feed the function one line or a subset of lines at a time
and it will still perform as expected.

> >   while i<len(text):
> >     if i+width+1>len(text):
> >       i=len(text)
> >     else:
> >       findnl=string.find(text, '\n', i)
> >       findspc=string.rfind(text, ' ', i, i+width+1)
> >       if findspc!=-1:
> >         if findnl!=-1 and findnl<findspc:
> >           i=findnl+1
> >         else:
> >           text=text[:findspc]+'\n'+text[findspc+1:]
> >           i=findspc+1
> >       else:
> >         findspc=string.find(text, ' ', i)
> >         if findspc!=-1:
> >           text=text[:findspc]+'\n'+text[findspc+1:]
> >           i=findspc+1
> >   return text

-- 
Ignacio Vazquez-Abrams  <ignacio at openservices.net>