CHIEFSOFT\ameye
112 lines
2.6 KiB
PHP
112 lines
2.6 KiB
PHP
<?php
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/**
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* @file classes/xml/XMLParserDOMHandler.php
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*
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* Copyright (c) 2014-2021 Simon Fraser University
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* Copyright (c) 2000-2021 John Willinsky
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* Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
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*
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* @class XMLParserDOMHandler
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*
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* @ingroup xml
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*
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* @see PKPXMLParser
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*
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* @brief Default handler for PKPXMLParser returning a simple DOM-style object.
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* This handler parses an XML document into a tree structure of XMLNode objects.
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*
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*/
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namespace PKP\xml;
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class XMLParserDOMHandler extends XMLParserHandler
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{
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/** @var XMLNode reference to the root node */
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public $rootNode;
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/** @var XMLNode reference to the node currently being parsed */
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public $currentNode;
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/** @var string reference to the current data */
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public $currentData;
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/** @var XMLNode[] */
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public $rootNodes = [];
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/**
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* Constructor.
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*/
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public function __construct()
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{
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$this->rootNodes = [];
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$this->currentNode = null;
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}
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public function destroy()
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{
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unset($this->currentNode, $this->currentData, $this->rootNode);
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}
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/**
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* Callback function to act as the start element handler.
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*
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* @param PKPXMLParser $parser
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* @param string $tag
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* @param array $attributes
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*/
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public function startElement($parser, $tag, $attributes)
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{
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$this->currentData = null;
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$node = new XMLNode($tag);
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$node->setAttributes($attributes);
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if (isset($this->currentNode)) {
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$this->currentNode->addChild($node);
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$node->setParent($this->currentNode);
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} else {
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$this->rootNode = & $node;
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}
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$this->currentNode = & $node;
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}
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/**
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* Callback function to act as the end element handler.
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*
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* @param PKPXMLParser $parser
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* @param string $tag
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*/
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public function endElement($parser, $tag)
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{
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$this->currentNode->setValue($this->currentData);
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$this->currentNode = & $this->currentNode->getParent();
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$this->currentData = null;
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}
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/**
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* Callback function to act as the character data handler.
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*
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* @param PKPXMLParser $parser
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* @param string $data
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*/
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public function characterData($parser, $data)
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{
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$this->currentData .= $data;
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}
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/**
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* Returns a reference to the root node of the tree representing the document.
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*
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* @return XMLNode
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*/
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public function getResult()
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{
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return $this->rootNode;
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}
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}
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if (!PKP_STRICT_MODE) {
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class_alias('\PKP\xml\XMLParserDOMHandler', '\XMLParserDOMHandler');
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}
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