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XML::LibXML::Text(3) User Contributed Perl Documentation XML::LibXML::Text(3)
NAME
XML::LibXML::Text - XML::LibXML Class for Text Nodes
SYNOPSIS
use XML::LibXML;
# Only methods specific to Text nodes are listed here,
# see XML::LibXML::Node manpage for other methods
$text = XML::LibXML::Text->new( $content );
$nodedata = $text->data;
$text->setData( $text_content );
$text->substringData($offset, $length);
$text->appendData( $somedata );
$text->insertData($offset, $string);
$text->deleteData($offset, $length);
$text->deleteDataString($remstring, $all);
$text->replaceData($offset, $length, $string);
$text->replaceDataString($old, $new, $flag);
$text->replaceDataRegEx( $search_cond, $replace_cond, $reflags );
DESCRIPTION
Unlike the DOM specification, XML::LibXML implements the text node as the base class of
all character data node. Therefore there exists no CharacterData class. This allows one to
apply methods of text nodes also to Comments and CDATA-sections.
METHODS
The class inherits from XML::LibXML::Node. The documentation for Inherited methods is not
listed here.
Many functions listed here are extensively documented in the DOM Level 3 specification
(<http://www.w3.org/TR/DOM-Level-3-Core/>). Please refer to the specification for
extensive documentation.
new
$text = XML::LibXML::Text->new( $content );
The constructor of the class. It creates an unbound text node.
data
$nodedata = $text->data;
Although there exists the "nodeValue" attribute in the Node class, the DOM
specification defines data as a separate attribute. "XML::LibXML" implements these two
attributes not as different attributes, but as aliases, such as "libxml2" does.
Therefore
$text->data;
and
$text->nodeValue;
will have the same result and are not different entities.
setData($string)
$text->setData( $text_content );
This function sets or replaces text content to a node. The node has to be of the type
"text", "cdata" or "comment".
substringData($offset,$length)
$text->substringData($offset, $length);
Extracts a range of data from the node. (DOM Spec) This function takes the two
parameters $offset and $length and returns the sub-string, if available.
If the node contains no data or $offset refers to an non-existing string index, this
function will return undef. If $length is out of range "substringData" will return the
data starting at $offset instead of causing an error.
appendData($string)
$text->appendData( $somedata );
Appends a string to the end of the existing data. If the current text node contains no
data, this function has the same effect as "setData".
insertData($offset,$string)
$text->insertData($offset, $string);
Inserts the parameter $string at the given $offset of the existing data of the node.
This operation will not remove existing data, but change the order of the existing
data.
The $offset has to be a positive value. If $offset is out of range, "insertData" will
have the same behaviour as "appendData".
deleteData($offset, $length)
$text->deleteData($offset, $length);
This method removes a chunk from the existing node data at the given offset. The
$length parameter tells, how many characters should be removed from the string.
deleteDataString($string, [$all])
$text->deleteDataString($remstring, $all);
This method removes a chunk from the existing node data. Since the DOM spec is quite
unhandy if you already know "which" string to remove from a text node, this method
allows more perlish code :)
The functions takes two parameters: $string and optional the $all flag. If $all is not
set, undef or 0, "deleteDataString" will remove only the first occurrence of $string.
If $all is TRUE"deleteDataString" will remove all occurrences of $string from the node
data.
replaceData($offset, $length, $string)
$text->replaceData($offset, $length, $string);
The DOM style version to replace node data.
replaceDataString($oldstring, $newstring, [$all])
$text->replaceDataString($old, $new, $flag);
The more programmer friendly version of replaceData() :)
Instead of giving offsets and length one can specify the exact string ($oldstring) to
be replaced. Additionally the $all flag allows to replace all occurrences of
$oldstring.
replaceDataRegEx( $search_cond, $replace_cond, $reflags )
$text->replaceDataRegEx( $search_cond, $replace_cond, $reflags );
This method replaces the node's data by a "simple" regular expression. Optional, this
function allows to pass some flags that will be added as flag to the replace
statement.
NOTE: This is a shortcut for
my $datastr = $node->getData();
$datastr =~ s/somecond/replacement/g; # 'g' is just an example for any flag
$node->setData( $datastr );
This function can make things easier to read for simple replacements. For more complex
variants it is recommended to use the code snippet above.
AUTHORS
Matt Sergeant, Christian Glahn, Petr Pajas
VERSION
2.0018
COPYRIGHT
2001-2007, AxKit.com Ltd.
2002-2006, Christian Glahn.
2006-2009, Petr Pajas.
perl v5.16.3 2013-05-13 XML::LibXML::Text(3)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache
Under GNU General Public License
2024-04-28 03:49 @18.223.0.53 CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)