[poppler] Find usign RegEx on top of xpdf-3.03

[Albert Astals Cid]

A Dijous, 6 d'octubre de 2011, wwwacky at free.fr vàreu escriure:
> Quoting Albert Astals Cid <aacid at kde.org>:
> > A Dimecres, 5 d'octubre de 2011, wwwacky at free.fr và reu escriure:
> > > Dear all,
> > 
> > Hi
> > 
> > > for some months I had the need for a regex find to dig out into huge
> > > pdf docs. Please find a patch attached that implements this feature
> > > on top of xpdf-3.03. It support ASCII only, backward and
> > > case-sensitive searches (word-only check-box has no effect any
> > > more). The xpdf MMI haven't been modified so that you can only
> > > perform regex searches with this patch! I saw that xpdf-3.03 is
> > > being merge in Poppler. Hope that it could help to make a review :)
> > > Let me know if you are interested in this patch so that I can help
> > > to merge it in Poppler.
> > 
> > We still have not merged xpdf-3.03 and it will probably still take a
> > while, but anyways i am not sure ASCII only is a good idea. Why that
> > limitation?
> > 
> > Albert
> 
> Hi,
> 
> In fact, this basic implementation relies on POSIX regex functions regcomp,
> regexec, regerror, regfree. These functions takes char strings and not
> Unicode strings in input. Thus, ASCII control chars and ASCII printable
> chars can be matched. Supporting Unicode-compatible regex search is much
> eavy to implement and out of my scope for the time being. I would like to
> support much more but I forecast a huge effort to gain Unicode. Morerover,
> ASCII matches 99% of my need in term of search in English data-sheets :)

Sure, it might match your needs, but if you contribute it to poppler, people 
will start demanding that it works with non ASCII characters and you will 
probably not be here anymore and the burden will be on our side.

Albert

> I know that this patch has some weaknesses but I think it can be great to
> get regex search in some applications such as Evince of which is gui _
> according to me _ smarter than xpdf one.
> 
> Best regards
> Jerry
> 
> PS: Sorry for my poor English and my clumsy proposal :)
> 
> > > Best regards
> > > Jerry
> > 
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