From: "Curtis Leach" <[EMAIL PROTECTED]> > I'm using a Perl 5.8.8 build on a Windows Server platform and I need to > work with XML files. > > Is there a preferred module for use when working with XML in Perl? I'm > new to XML & I'm just looking for directions to XML modules to look at > so I don't waste too much time going down the wrong path while wading > through all the available XML modules on CPAN.
Have a look at XML::Twig. Especially for huge documents it's much better than the XML::DOM or XML::LibXML (in tree mode) since it doesn't require that you load the whole file into memory at one time. > I have a few example programs using XML::Simple (v2.14)for parsing out a > couple of config values from some small XML files and returning them to > the caller, but I'm going to need to programmatically edit more complex > XML files that are considerably larger & save the results. With the > potential of the files being edited being huge. But maybe 10,000 to > 15,000 data points to update being average. > > I'm going to see multiple entries such as: > > <tag22 rt="abcd" seg="22" opt="xyz" /> > .... > <tag22 rt="masd" seg="14" opt="zxy" /> > > So I'll load the XML file into memory, validate it's well formed XML, > and then locate every occurrence of tag22 to update it's optional "seg" > attribute. Making sure I only update a specific tag22 one time! Once > I've updated them all, I'll write the updated XML document back to disk. Why do you want to load it all into memory and validate before you start to update it? You can process the file as you parse the tags and create the updated file as you go. And if you find out it was not well-formed you can delete the new file and report the error. That will be much much quicker and use much less memory. Have a look at XML::Twig and XML::Rules for things like that. Jenda ===== [EMAIL PROTECTED] === http://Jenda.Krynicky.cz ===== When it comes to wine, women and song, wizards are allowed to get drunk and croon as much as they like. -- Terry Pratchett in Sourcery _______________________________________________ ActivePerl mailing list [email protected] To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
