LibXML

Section: User Contributed Perl Documentation (3)
Updated: 2003-11-07
Index Return to Main Contents
 

NAME

XML::LibXML - Perl Binding for libxml2  

SYNOPSIS

  $Version_String = XML::LibXML::LIBXML_DOTTED_VERSION;
  $Version_ID = XML::LibXML::LIBXML_VERSION;
  $libxmlnode = XML::LibXML->import_GDOME( $node, $deep );
  $gdomenode = XML::LibXML->export_GDOME( $node, $deep );

 

DESCRIPTION

 

SYNOPSIS

  use XML::LibXML;
  my $parser = XML::LibXML->new();

  my $doc = $parser->parse_string(<<'EOT');
  <some-xml/>
  EOT

 

DESCRIPTION

This module is an interface to the gnome libxml2 DOM and SAX parser and the DOM tree. It also provides an XML::XPath-like findnodes() interface, providing access to the XPath API in libxml2. The module is split into several packages which are not described in this section.

For further information, please check the following documentation:

XML::LibXML::Parser
Parsing XML Files with XML::LibXML
XML::LibXML::DOM
XML::LibXML DOM Implementation
XML::LibXML::SAX
XML::LibXML direct SAX parser
XML::LibXML::Document
XML::LibXML DOM Document Class
XML::LibXML::Node
Abstract Base Class of XML::LibXML Nodes
XML::LibXML::Element
XML::LibXML Class for Element Nodes
XML::LibXML::Text
XML::LibXML Class for Text Nodes
XML::LibXML::Comment
XML::LibXML Comment Nodes
XML::LibXML::CDATASection
XML::LibXML Class for CDATA Sections
XML::LibXML::Attr
XML::LibXML Attribute Class
XML::LibXML::DocumentFragment
XML::LibXML's DOM L2 Document Fragment Implementation
XML::LibXML::Namespace
XML::LibXML Namespace Implementation
XML::LibXML::PI
XML::LibXML Processing Instructions
XML::LibXML::Dtd
XML::LibXML DTD Support
XML::LibXML::RelaxNG
XML::LibXML frontend for RelaxNG schema validation
XML::LibXMLguts
Internal of the Perl Layer for libxml2 (not done yet)
 

VERSION INFORMATION

Sometimes it is usefull to figure out, for which version XML::LibXML was compiled for. In most cases this is for debugging or to check if a given installation meets all functionality for the package. The functiones XML::LibXML::LIBXML_DOTTED_VERSION and XML::LibXML::LIBXML_VERSION provide this version information. Both functions simply pass through the values of the similar named macros of libxml2.
XML::LibXML::LIBXML_DOTTED_VERSION
  $Version_String = XML::LibXML::LIBXML_DOTTED_VERSION;

Returns the Versionstring of the libxml2 version XML::LibXML was compiled for. This will be ``2.6.2'' for ``libxml2 2.6.2''.

XML::LibXML::LIBXML_VERSION
  $Version_ID = XML::LibXML::LIBXML_VERSION;

Returns the version id of the libxml2 version XML::LibXML was compiled for. This will be ``20602'' for ``libxml2 2.6.2''. Don't mix this version id with $XML::LibXML::VERSION. The latter contains the version of XML::LibXML itself while the first contains the version of libxml2 XML::LibXML was compiled for.

 

RELATED MODULES

The modules described in this section are not part of the XML::LibXML package itself. As they support some additional features, they are mentioned here.
XML::LibXSLT
XSLT Processor using libxslt and XML::LibXML
XML::LibXML::Common
Common functions for XML::LibXML related Classes
XML::LibXML::Iterator
XML::LibXML Implementation of the DOM Traversal Specification
XML::LibXML::XPathContext
Advanced XPath processing using libxml2 and XML::LibXML
 

XML::LIBXML AND XML::GDOME

Note: THE FUNCTIONS DESCRIBED HERE ARE STILL EXPERIMENTAL

Although both modules make use of libxml2's XML capabilities, the DOM implementation of both modules are not compatible. But still it is possible to exchange nodes from one DOM to the other. The concept of this exchange is pretty similar to the function cloneNode(): The particular node is copied on the lowlevel to the opposite DOM implementation.

Since the DOM implementations cannot coexist within one document, one is forced to copy each node that should be used. Because you are always keeping two nodes this may cause quite an impact on a machines memory usage.

XML::LibXML provides two functions to export or import GDOME nodes: import_GDOME() and export_GDOME(). Both function have two parameters: the node and a flag for recursive import. The flag works as in cloneNode().

The two functions allow to export and import XML::GDOME nodes explicitly, however, XML::LibXML allows also the transparent import of XML::GDOME nodes in functions such as appendChild(), insertAfter() and so on. While native nodes are automaticly adopted in most functions XML::GDOME nodes are always cloned in advance. Thus if the original node is modified after the operation, the node in the XML::LibXML document will not have this information.

import_GDOME
  $libxmlnode = XML::LibXML->import_GDOME( $node, $deep );

This clones an XML::GDOME node to a XML::LibXML node explicitly.

export_GDOME
  $gdomenode = XML::LibXML->export_GDOME( $node, $deep );

Allows to clone an XML::LibXML node into a XML::GDOME node.

 

AUTHORS

Matt Sergeant, Christian Glahn, =head1 VERSION

1.58  

COPYRIGHT

2001-2004, AxKit.com Ltd; 2002-2004 Christian Glahn, All rights reserved.


 

Index

NAME
SYNOPSIS
DESCRIPTION
SYNOPSIS
DESCRIPTION
VERSION INFORMATION
RELATED MODULES
XML::LIBXML AND XML::GDOME
AUTHORS
COPYRIGHT

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