11-13-2008
There are a number of free parsers available for UNIX platforms. The most common is probally the one associated with libxslt2 i.e. xsltproc.
BTW, If your input document is that large and causing the problems you describe, I suggest you use a SAX or SiAX processor instead of a DOM-based processor. If you have access to IEEE Computer Society proceedings, there was an article in the Sept 2008 edition of Computer by Lam, Ding, and Liu on XML Document parsing performance characteristics which gives more information and benchmarks.
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LEARN ABOUT SUSE
xml::libxml::sax
XML::LibXML::SAX(3) User Contributed Perl Documentation XML::LibXML::SAX(3)
NAME
XML::LibXML::SAX - XML::LibXML direct SAX parser
DESCRIPTION
XML::LibXML provides an interface to libxml2 direct SAX interface. Through this interface it is possible to generate SAX events directly
while parsing a document. While using the SAX parser XML::LibXML will not create a DOM Document tree.
Such an interface is useful if very large XML documents have to be processed and no DOM functions are required. By using this interface it
is possible to read data stored within a XML document directly into the application data structures without loading the document into
memory.
The SAX interface of XML::LibXML is based on the famous XML::SAX interface. It uses the generic interface as provided by XML::SAX::Base.
Additionally to the generic functions, which are only able to process entire documents, XML::LibXML::SAX provides parse_chunk(). This
method generates SAX events from well balanced data such as is often provided by databases.
NOTE: At the moment XML::LibXML provides only an incomplete interface to libxml2's native SAX implementation. The current implementation is
not tested in production environment. It may causes significant memory problems or shows wrong behaviour. If you run into specific problems
using this part of XML::LibXML, let me know.
AUTHORS
Matt Sergeant, Christian Glahn, Petr Pajas
VERSION
1.70
COPYRIGHT
2001-2007, AxKit.com Ltd.
2002-2006, Christian Glahn.
2006-2009, Petr Pajas.
perl v5.12.1 2009-10-07 XML::LibXML::SAX(3)