Re: [q-lang-users] cgi.q

[Tim H. <q...@st...>]

Albert Graef <Dr....@t-...> writes:

> Tim Haynes wrote:
> > Eep, well spotted. OK, I'm attaching the latest version I have in use here.
> 
> Dear Tim,
> 
> thanks a lot indeed. I'm ready to commit the new version to cvs, but with
> Q 7.1 I get: Error cgi.q, line 91: invalid character escape `\?'. Here's
> the corresponding line:
> 
> 
>                          (regex "" "^http://[^?]+\?(.*)$" HR (reg 1) )
> 
> You probably want a \\? there? (Yes, John, I admit that you were right
> all along: It's hard to spot such bugs without making unrecognized char
> escapes a syntax error. (-:)

Oh, drat, you've got me - I've not upgraded Q to 7.1 on the live site. Fix
it by all means! :)

I keep meaning to normalize everything and make one central library of the
Q modules, too...

> >    * A `strictatoi' function (a wrapper around val that only works if the
> > string is a number - saves a risk of Q-injection! - also uses `matches')
> 
> I don't know whether this is helpful, but you can also use `valq' to do a
> "safe parse" without evaluating anything:
> 
> safe_atoi S = I where 'I:Int = valq S;

Ah, thanks :)

> BTW, do you still have a Q-powered page available anywhere? I remember
> that you once had a part of the interface to your picture collection
> written in Q, is that still the case?

Yes indeed - I'm up to at least 3 sites, now:
    http://pig.sty.nu/Pictures/  
    http://scot-pics.sty.nu/     
    http://pig.sty.nu/wittering/ 

Mostly they're simple db<->xml+xslt things, althoguh scot-pics includes
imagemagick and wittering/ is an increasingly complicated not-blog
thing(TM) with spam-reduced comments and support for pinging technorati
etc.

> In case someone is interested in this side of Q programming, I also have
> a little Q-powered website. The entry point is here:
> 
> http://muwiinfa.geschichte.uni-mainz.de:5050/kirnberger.html

Neat!

> Hmm, it just came to me that I should probably put some Q cgi scripting
> examples on q-lang.sf.net...

Sounds good to me. There's a test function in cgi.q that might help; if I
get a moment I might try & write a cleaner db->xml->xslt sample as well.

~Tim 
<http://spodzone.org.uk/>