Re: regexec - chopping a large text string into chunks

[Adam Glauser <adamglauser@xxxxxxxxxxxx>]

Scott Klement wrote:
> >  pattern = '(\S\S{40,}|.{1,40})(\s+|$)' + x'00';

> The next element of the array matches your first subexpression. 
> Subexpressions are the things in parenthesis.  Your first one is 
> (\S\S{40,}|.{1,40}) -- which means 40 or more of the letter S or 1-40 of 
> any character.

Not to put words in Aaron's mouth, but I suspect that when he's using \s 
and \S he's looking for whitespace and non-whitespace respectively.  Do 
the C regex APIs support Extended Regular Expression syntax, 
specifically the shorthand character classes? [1]

If I'm right about Aaron's intention with \s and \S, then I'm a bit 
confused about the '\S\S{40,} part.  I think that if the search string 
contained 41 or more consecutive non-whitespace characters, that would 
be what was matched.  I haven't tested this.

HTH,
Adam

[1] 
http://en.wikipedia.org/wiki/Regular_expression#POSIX_Extended_Regular_Expressions