Re: Writing XML from Perl
Quoting Dominic Mitchell ([EMAIL PROTECTED]): [ ... ] Hereby I want to thank everyone for their suggestions. I'll have a look at the different options and make an educated choice. > > The important point is to not use print statements, because you'll get > it wrong. :-) > I did this for a project a few years ago and this was o so true :) Kris, -- Kris Boulez Tel: +32-9-241.11.00 AlgoNomics NV Fax: +32-9-241.11.02 Technologiepark 4 email: [EMAIL PROTECTED] B 9052 Zwijnaarde http://www.algonomics.com/
Re: Writing XML from Perl
Marty Pauley wrote: On Thu Oct 24 15:13:09 2002, Kris Boulez wrote: What is peoples preferred module for writing XML (files) from within Perl ? The data is read by a perl script from different (heterogeneous) sources and stored internally in a tree of objects. I use XML::DOM for that sort of thing. I haven't tried anything else since XML::DOM has worked well. As I walk the tree each node calls createElement for itself then appendChild for any branches. XML::LibXML (as mentioned in another post) is likely to be a lot quicker, as it's based on a C library. Personally, I use either XML::Twig, or XML::SAX::Writer, as appropriate. The important point is to not use print statements, because you'll get it wrong. :-) -Dom -- | Semantico: creators of major online resources | | URL: http://www.semantico.com/ | | Tel: +44 (1273) 72 | | Address: 33 Bond St., Brighton, Sussex, BN1 1RD, UK. |
Re: Writing XML from Perl
On Thu, Oct 24, 2002 at 05:16:13PM +0100, Dominic Mitchell wrote: > Marty Pauley wrote: > > On Thu Oct 24 15:13:09 2002, Kris Boulez wrote: > > > >>What is peoples preferred module for writing XML (files) from within > >>Perl ? The data is read by a perl script from different (heterogeneous) > >>sources and stored internally in a tree of objects. > > > > > > I use XML::DOM for that sort of thing. I haven't tried anything else > > since XML::DOM has worked well. As I walk the tree each node calls > > createElement for itself then appendChild for any branches. > > XML::LibXML (as mentioned in another post) is likely to be a lot > quicker, as it's based on a C library. XML::GDOM has a partially or totally SAX2 compatability, is based on libxml2 and has a virtually drop-in replacement interface for XML::DOM. It was what I used the last time I did any XML. But then, I hate XML. Ben
Re: Writing XML from Perl
On Thu, 24 Oct 2002, Kris Boulez wrote:
> What is peoples preferred module for writing XML (files) from within
> Perl ? The data is read by a perl script from different (heterogeneous)
> sources and stored internally in a tree of objects.
The prefered way is to make calls to XML::SAX to output the data, but
"prefered" is a very vauge term. You might want to use one of the SAX
drivers that use perl data structures since you've already got one. Or it
might be simpler to use a differnt module all together as you're only
dealing with files...
To be honest, this is a bit of an open ended question, and, well, there's
more than one way to do it. I recommend:
a) Reading Perl & XML (o'reilly) (also part of perl cd bookshelf 3)
b) Reading all of Kip's articles on xml.com [1]
c) Joining the perl XML mailing list [2]
d) Asking people on #axkit / #axkit-dahut [3]
Hope that's helpful.
Mark.
[1] I suggest you start here:
http://www.xml.com/pub/a/2001/04/18/perlxmlqstart1.html
[2] http://lists.perl.org/showlist.cgi?name=perl-xml
[3] irc.rhizomatic.net (or local node), port 6667.
--
s'' Mark Fowler London.pm Bath.pm
http://www.twoshortplanks.com/ [EMAIL PROTECTED]
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){for(0..30){$|=print$t->Tgoto(cm,$_,$y)." $w";select$k,$k,$k,.03}$y+=2}
Re: Writing XML from Perl
On Thu Oct 24 15:13:09 2002, Kris Boulez wrote: > What is peoples preferred module for writing XML (files) from within > Perl ? The data is read by a perl script from different (heterogeneous) > sources and stored internally in a tree of objects. I use XML::DOM for that sort of thing. I haven't tried anything else since XML::DOM has worked well. As I walk the tree each node calls createElement for itself then appendChild for any branches. -- Marty
Re: Writing XML from Perl
On Thu, Oct 24, 2002 at 03:13:09PM +0200, Kris Boulez wrote: > What is peoples preferred module for writing XML (files) from within > Perl ? The data is read by a perl script from different (heterogeneous) > sources and stored internally in a tree of objects. > > I looked around a bit and saw XML::Writer being mentioned a lot. Is it > this what most people are using ? When I needed to write out some XML at work for reading by someone's Java application (Not that what reads it should matter) I had a play with XML::Writer to start with, but kept having problems with it dumping illegal characters into the XML. Hmm. Ended up using the XML::LibXML module, a very different approach in that XML is produced as a tree and then written out all at once rather than line-by-line. This did have the advantage that I can't think how I could force it to produce invalid XML, and I had a lot less conditional logic to deal with. On the downside it naturally used up more memory, but since I wasn't dealing with overly huge datafiles this wasn't too much of an issue for me. Paul Golds
