API:EPrints/XML

EPrints 3 Reference: Directory Structure - Metadata Fields - Repository Configuration - XML Config Files - XML Export Format - EPrints data structure - Core API - Data Objects

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API: Core API

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NAME

EPrints::XML - XML Abstraction Module

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For preference, use the methods in EPrints::Handle::XML

SYNOPSIS

 my $xml = $repository->xml;
 
 $doc = $xml->parse_string( $string );
 $doc = $xml->parse_file( $filename );
 $doc = $xml->parse_url( $url );
 
 $utf8_string = $xml->to_string( $dom_node, %opts );
 
 $dom_node = $xml->clone( $dom_node ); # deep
 $dom_node = $xml->clone_node( $dom_node ); # shallow
 
 # clone and return child nodes
 $dom_node = $xml->contents_of( $dom_node );
 # Return text child nodes as a string
 $utf8_string = $xml->text_contents_of( $dom_node );
 
 $dom_node = $xml->create_element( $name, %attr );
 $dom_node = $xml->create_text_node( $value );
 $dom_node = $xml->create_comment( $value );
 $dom_node = $xml->create_document_fragment;
 
 $xml->dispose( $dom_node );
 

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DESCRIPTION

EPrints can use either XML::DOM, XML::LibXML or XML::GDOME modules to generate and process XML. Some of the functionality of these modules differs so this module abstracts such functionality so that all the module specific code is in one place.

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METHODS

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Parsing

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parse_string

$doc = $xml->parse_string( $string, %opts )

Returns an XML document parsed from $string.

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parse_file

$doc = $xml->parse_file( $filename, %opts )

Returns an XML document parsed from the file called $filename.

 base_path - base path to load DTD files from
 no_expand - don't expand entities
 

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parse_url

$doc = $xml->parse_url( $url, %opts )

Returns an XML document parsed from the content located at $url.

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Node Creation

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create_element

$node = $xml->create_element( $name [, @attrs ] )

Returns a new XML element named $name with optional attribute pairs @attrs.

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create_data_element

$node = $xml->create_data_element( $name, $value [, @attrs ] )

Returns a new XML element named $name with $value for contents and optional attribute pairs @attrs.

$value may be undef, an XML tree or an array ref of children, otherwise it is stringified and appended as a text node. Child entries are passed de-referenced to create_data_element.

 $xml->create_data_element(
   "html",
   [
     [ "head" ],
     [ "body",
       [ [ "div", undef, id => "contents" ] ]
     ],
   ],
   xmlns => "http://www.w3.org/1999/xhtml"
 );
 

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create_cdata_section

$node = $xml->create_cdata_section( $value )

Returns a CDATA section containing $value.

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create_text_node

$node = $xml->create_text_node( $value )

Returns a new XML text node containing $value.

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create_comment

$node = $xml->create_comment( $value )

Returns a new XML comment containing $value.

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create_document_fragment

$node = $xml->create_document_fragment

Returns a new XML document fragment.

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Other

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is

$bool = $xml->is( $node, $type [, $type ... ] )

Returns true if $node is one of the given node types: Document, DocumentFragment, Element, Comment, Text.

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clone

$node = $xml->clone( $node )

Returns a deep clone of $node. The new node(s) will be owned by this object.

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clone_node

$node = $xml->clone_node( $node )

Returns a clone of $node only (no children). The new node will be owned by this object.

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contents_of

$node = $xml->contents_of( $node )

Returns a document fragment containing a copy of all the children of $node.

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text_contents_of

$string = $xml->text_contents_of( $node )

Returns the concantenated value of all text nodes in $node (or the value of $node if $node is a text node).

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to_string

$utf8_string = $xml->to_string( $node, %opts )

Serialises and returns the $node as a UTF-8 string.

To generate an XHTML string see EPrints::XHTML.

Options: indent - if true will indent the XML tree

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dispose

$xml->dispose( $node )

Dispose and free the memory used by $node.

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COPYRIGHT

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