> -----Original Message----- > From: Rainer Jung > Sent: Donnerstag, 17. Dezember 2009 15:56 > To: dev@httpd.apache.org > Subject: Re: [Proposal for trunk] Extending RewriteMap, > Reusing ip network matches > > On 17.12.2009 14:32, "Plüm, Rüdiger, VF-Group" wrote: > > > > > >> -----Original Message----- > >> From: Rainer Jung > >> Sent: Donnerstag, 17. Dezember 2009 13:38 > >> To: dev@httpd.apache.org > >> Subject: [Proposal for trunk] Extending RewriteMap, Reusing > >> ip network matches > >> > >> 1) Extending RewriteMap > >> ======================= > >> > >> I plan to extend key file handling in text file RewriteMap. At the > >> moment keys are always matched as exact strings against the > >> map. I want > >> to add the ability to alternatively > >> > >> a) match via regexp (and replace backreferences in the > found values) > > > > Can you give an example for this? > > Where are these regexps? In the map file or in the > expression of the Map in the RewriteRule? > > The regular expressions are the first columns in the map file. The > actual keys searched for will be normal strings matched against those > regexps. The result returned is the second column with backreferences > resolved against the match from the first column and the key.
I see some performance issue with this approach since each time one thing in the file changes *all* regexps need to be recompiled. If it is a large file that changes frequently this can eat up a considerable amount of cycles. Regards Rüdiger
