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<?php
/**
* DOMIT! Lite is a non-validating, but lightweight and fast DOM parser for PHP
* @package domit-xmlparser
* @subpackage domit-xmlparser-lite
* @version 1.01
* @copyright (C) 2004 John Heinstein. All rights reserved
* @license http://www.gnu.org/copyleft/lesser.html LGPL License
* @author John Heinstein <johnkarl@nbnet.nb.ca>
* @link http://www.engageinteractive.com/domit/ DOMIT! Home Page
* DOMIT! is Free Software
**/
if (!defined('DOMIT_INCLUDE_PATH')) {
define('DOMIT_INCLUDE_PATH', (dirname(__FILE__) . "/"));
}
/** current version of DOMIT! Lite */
define ('DOMIT_LITE_VERSION', '1.01');
/**
*@global array Flipped version of $definedEntities array, to allow two-way conversion of entities
*
* Made global so that Attr nodes, which have no ownerDocument property, can access the array
*/
$GLOBALS['DOMIT_defined_entities_flip'] = array();
require_once(DOMIT_INCLUDE_PATH . 'xml_domit_shared.php');
/**
* The base class of all DOMIT node types
*
* @package domit-xmlparser
* @subpackage domit-xmlparser-lite
* @author John Heinstein <johnkarl@nbnet.nb.ca>
*/
class DOMIT_Lite_Node {
/** @var string The name of the node, varies according to node type */
var $nodeName = null;
/** @var string The value of the node, varies according to node type */
var $nodeValue = null;
/** @var int The type of node, e.g. CDataSection */
var $nodeType = null;
/** @var Object A reference to the parent of the current node */
var $parentNode = null;
/** @var Array An array of child node references */
var $childNodes = null;
/** @var Object A reference to the first node in the childNodes list */
var $firstChild = null;
/** @var Object A reference to the last node in the childNodes list */
var $lastChild = null;
/** @var Object A reference to the node prior to the current node in its parents childNodes list */
var $previousSibling = null;
/** @var Object A reference to the node after the current node in its parents childNodes list */
var $nextSibling = null;
/** @var Array An array of attribute key / value pairs */
var $attributes = null;
/** @var Object A reference to the Document node */
var $ownerDocument = null;
/** @var string The unique node id */
var $uid;
/** @var int The number of children of the current node */
var $childCount = 0;
/**
* Raises error if abstract class is directly instantiated
*/
function DOMIT_Lite_Node() {
DOMIT_DOMException::raiseException(DOMIT_ABSTRACT_CLASS_INSTANTIATION_ERR,
'Cannot instantiate abstract class DOMIT_Lite_Node');
} //DOMIT_Lite_Node
/**
* DOMIT_Lite_Node constructor, assigns a uid
*/
function _constructor() {
global $uidFactory;
$this->uid = $uidFactory->generateUID();
} //_constructor
/**
* Appends a node to the childNodes list of the current node
* @abstract
* @param Object The node to be appended
* @return Object The appended node
*/
function &appendChild(&$child) {
DOMIT_DOMException::raiseException(DOMIT_HIERARCHY_REQUEST_ERR,
('Method appendChild cannot be called by class ' . get_class($this)));
} //appendChild
/**
* Inserts a node to the childNodes list of the current node
* @abstract
* @param Object The node to be inserted
* @param Object The node before which the insertion is to occur
* @return Object The inserted node
*/
function &insertBefore(&$newChild, &$refChild) {
DOMIT_DOMException::raiseException(DOMIT_HIERARCHY_REQUEST_ERR,
('Method insertBefore cannot be called by class ' . get_class($this)));
} //insertBefore
/**
* Replaces a node with another
* @abstract
* @param Object The new node
* @param Object The old node
* @return Object The new node
*/
function &replaceChild(&$newChild, &$oldChild) {
DOMIT_DOMException::raiseException(DOMIT_HIERARCHY_REQUEST_ERR,
('Method replaceChild cannot be called by class ' . get_class($this)));
} //replaceChild
/**
* Removes a node from the childNodes list of the current node
* @abstract
* @param Object The node to be removed
* @return Object The removed node
*/
function &removeChild(&$oldChild) {
DOMIT_DOMException::raiseException(DOMIT_HIERARCHY_REQUEST_ERR,
('Method removeChild cannot be called by class ' . get_class($this)));
} //removeChild
/**
* Returns the index of the specified node in a childNodes list
* @param Array The childNodes array to be searched
* @param Object The node targeted by the search
* @return int The index of the target node, or -1 if not found
*/
function getChildNodeIndex(&$arr, &$child) {
$index = -1;
$total = count($arr);
for ($i = 0; $i < $total; $i++) {
if ($child->uid == $arr[$i]->uid) {
$index = $i;
break;
}
}
return $index;
} //getChildNodeIndex
/**
* Determines whether a node has any children
* @return boolean True if any child nodes are present
*/
function hasChildNodes() {
return ($this->childCount > 0);
} //hasChildNodes
/**
* Copies a node and/or its children
* @abstract
* @param boolean True if all child nodes are also to be cloned
* @return Object A copy of the node and/or its children
*/
function &cloneNode($deep = false) {
DOMIT_DOMException::raiseException(DOMIT_ABSTRACT_METHOD_INVOCATION_ERR,
'Cannot invoke abstract method DOMIT_Lite_Node->cloneNode($deep). Must provide an overridden method in your subclass.');
} //cloneNode
/**
* Adds elements with the specified tag name to a NodeList collection
* @param Object The NodeList collection
* @param string The tag name of matching elements
*/
function getNamedElements(&$nodeList, $tagName) {
//Implemented in DOMIT_Lite_Element.
//Needs to be here though! This is called against all nodes in the document.
} //getNamedElements
/**
* Sets the ownerDocument property of a node to the containing DOMIT_Document
* @param Object A reference to the document element of the DOMIT_Document
*/
function setOwnerDocument(&$rootNode) {
if ($rootNode->ownerDocument == null) {
unset($this->ownerDocument);
$this->ownerDocument = null;
}
else {
$this->ownerDocument =& $rootNode->ownerDocument;
}
$total = $this->childCount;
for ($i = 0; $i < $total; $i++) {
$this->childNodes[$i]->setOwnerDocument($rootNode);
}
} //setOwnerDocument
/**
* Tests whether a value is null, and if so, returns a default value
* @param mixed The value to be tested
* @param mixed The default value
* @return mixed The specified value, or the default value if null
*/
function &nvl(&$value,$default) {
if (is_null($value)) return $default;
return $value;
} //nvl
/**
* Retrieves an element or DOMIT_NodeList of elements corresponding to an Xpath-like expression.
* @abstract
* @param string The query pattern
* @param int If a single node is to be returned (rather than the entire NodeList) the index of that node
* @return mixed A NodeList or single node that matches the pattern
*/
function &getElementsByPath($pattern, $nodeIndex = 0) {
DOMIT_DOMException::raiseException(DOMIT_HIERARCHY_REQUEST_ERR,
('Method getElementsByPath cannot be called by class ' . get_class($this)));
} //getElementsByPath
/**
* Returns the concatented text of the current node and its children
* @return string The concatented text of the current node and its children
*/
function getText() {
return $this->nodeValue;
} //getText
/**
* Formats a string for presentation as HTML
* @param string The string to be formatted
* @param boolean True if the string is to be sent directly to output
* @return string The HTML formatted string
*/
function forHTML($str, $doPrint = false) {
require_once(DOMIT_INCLUDE_PATH . 'xml_domit_utilities.php');
return DOMIT_Utilities::forHTML($str, $doPrint);
} //forHTML
/**
* Generates an array representation of the node and its children
* @abstract
* @return Array A representation of the node and its children
*/
function toArray() {
DOMIT_DOMException::raiseException(DOMIT_HIERARCHY_REQUEST_ERR,
('Method toArray cannot be called by class ' . get_class($this)));
} //toArray
/**
* A node event that can be set to fire upon document loading, used for node initialization
* @abstract
*/
function onLoad() {
//you can override this method if you subclass any of the
//DOMIT_Lite_Nodes. It's a way of performing
//initialization of your subclass as soon as the document
//has been loaded (as opposed to as soon as the current node
//has been instantiated).
} //onLoad
/**
* Clears previousSibling, nextSibling, and parentNode references from a node that has been removed
*/
function clearReferences() {
if ($this->previousSibling != null) {
unset($this->previousSibling);
$this->previousSibling = null;
}
if ($this->nextSibling != null) {
unset($this->nextSibling);
$this->nextSibling = null;
}
if ($this->parentNode != null) {
unset($this->parentNode);
$this->parentNode = null;
}
} //clearReferences
/**
* Generates a normalized (formatted for readability) representation of the node and its children
* @param boolean True if HTML readable output is desired
* @param boolean True if illegal xml characters in text nodes and attributes should be converted to entities
* @return string The formatted string representation
*/
function toNormalizedString($htmlSafe = false, $subEntities = false) {
//require this file for generating a normalized (readable) xml string representation
require_once(DOMIT_INCLUDE_PATH . 'xml_domit_utilities.php');
global $DOMIT_defined_entities_flip;
$result = DOMIT_Utilities::toNormalizedString($this, $subEntities, $DOMIT_defined_entities_flip);
if ($htmlSafe) $result = $this->forHTML($result);
return $result;
} //toNormalizedString
} //DOMIT_Lite_Node
/**
* A parent class for nodes which possess child nodes
*
* @package domit-xmlparser
* @subpackage domit-xmlparser-lite
* @author John Heinstein <johnkarl@nbnet.nb.ca>
*/
class DOMIT_Lite_ChildNodes_Interface extends DOMIT_Lite_Node {
/**
* Raises error if abstract class is directly instantiated
*/
function DOMIT_Lite_ChildNodes_Interface() {
DOMIT_DOMException::raiseException(DOMIT_ABSTRACT_CLASS_INSTANTIATION_ERR,
'Cannot instantiate abstract class DOMIT_Lite_ChildNodes_Interface');
} //DOMIT_Lite_ChildNodes_Interface
/**
* Appends a node to the childNodes list of the current node
* @param Object The node to be appended
* @return Object The appended node
*/
/**
* Appends a node to the childNodes list of the current node
* @param Object The node to be appended
* @return Object The appended node
*/
function &appendChild(&$child) {
if (!($this->hasChildNodes())) {
$this->childNodes[0] =& $child;
$this->firstChild =& $child;
}
else {
//remove $child if it already exists
$index = $this->getChildNodeIndex($this->childNodes, $child);
if ($index != -1) {
$this->removeChild($child);
}
//append child
$numNodes = $this->childCount;
//BB: was bug auto-created wrong childnodes[-1]: added IF
if ($numNodes>0) $prevSibling =& $this->childNodes[($numNodes - 1)];
$this->childNodes[$numNodes] =& $child;
//set next and previous relationships
//BB: added this line and the else part to finish correcting bug
if (isset($prevSibling)) {
$child->previousSibling =& $prevSibling;
$prevSibling->nextSibling =& $child;
} else {
unset($child->previousSibling);
$child->previousSibling = null;
$this->firstChild =& $child;
}
}
$this->lastChild =& $child;
$child->parentNode =& $this;
unset($child->nextSibling);
$child->nextSibling = null;
$child->setOwnerDocument($this);
$this->childCount++;
return $child;
} //appendChild
/**
* Inserts a node to the childNodes list of the current node
* @param Object The node to be inserted
* @param Object The node before which the insertion is to occur
* @return Object The inserted node
*/
function &insertBefore(&$newChild, &$refChild) {
if (($refChild->nodeType == DOMIT_DOCUMENT_NODE) ||
($refChild->parentNode == null)) {
DOMIT_DOMException::raiseException(DOMIT_NOT_FOUND_ERR,
'Reference child not present in the child nodes list.');
}
//if reference child is also the node to be inserted
//leave the document as is and don't raise an exception
if ($refChild->uid == $newChild->uid) {
return $newChild;
}
//remove $newChild if it already exists
$index = $this->getChildNodeIndex($this->childNodes, $newChild);
if ($index != -1) {
$this->removeChild($newChild);
}
//find index of $refChild in childNodes
$index = $this->getChildNodeIndex($this->childNodes, $refChild);
if ($index != -1) {
//reset sibling chain
if ($refChild->previousSibling != null) {
$refChild->previousSibling->nextSibling =& $newChild;
$newChild->previousSibling =& $refChild->previousSibling;
}
else {
$this->firstChild =& $newChild;
if ($newChild->previousSibling != null) {
unset($newChild->previousSibling);
$newChild->previousSibling = null;
}
}
$newChild->parentNode =& $refChild->parentNode;
$newChild->nextSibling =& $refChild;
$refChild->previousSibling =& $newChild;
//add node to childNodes
$i = $this->childCount;
while ($i >= 0) {
if ($i > $index) {
$this->childNodes[$i] =& $this->childNodes[($i - 1)];
}
else if ($i == $index) {
$this->childNodes[$i] =& $newChild;
}
$i--;
}
$this->childCount++;
}
else {
$this->appendChild($newChild);
}
$newChild->setOwnerDocument($this);
return $newChild;
} //insertBefore
/**
* Replaces a node with another
* @param Object The new node
* @param Object The old node
* @return Object The new node
*/
function &replaceChild(&$newChild, &$oldChild) {
if ($this->hasChildNodes()) {
//remove $newChild if it already exists
$index = $this->getChildNodeIndex($this->childNodes, $newChild);
if ($index != -1) {
$this->removeChild($newChild);
}
//find index of $oldChild in childNodes
$index = $this->getChildNodeIndex($this->childNodes, $oldChild);
if ($index != -1) {
$newChild->ownerDocument =& $oldChild->ownerDocument;
$newChild->parentNode =& $oldChild->parentNode;
//reset sibling chain
if ($oldChild->previousSibling == null) {
unset($newChild->previousSibling);
$newChild->previousSibling = null;
}
else {
$oldChild->previousSibling->nextSibling =& $newChild;
$newChild->previousSibling =& $oldChild->previousSibling;
}
if ($oldChild->nextSibling == null) {
unset($newChild->nextSibling);
$newChild->nextSibling = null;
}
else {
$oldChild->nextSibling->previousSibling =& $newChild;
$newChild->nextSibling =& $oldChild->nextSibling;
}
$this->childNodes[$index] =& $newChild;
if ($index == 0) $this->firstChild =& $newChild;
if ($index == ($this->childCount - 1)) $this->lastChild =& $newChild;
$newChild->setOwnerDocument($this);
return $newChild;
}
}
DOMIT_DOMException::raiseException(DOMIT_NOT_FOUND_ERR,
('Reference node for replaceChild not found.'));
} //replaceChild
/**
* Removes a node from the childNodes list of the current node
* @param Object The node to be removed
* @return Object The removed node
*/
function &removeChild(&$oldChild) {
if ($this->hasChildNodes()) {
//find index of $oldChild in childNodes
$index = $this->getChildNodeIndex($this->childNodes, $oldChild);
if ($index != -1) {
//reset sibling chain
if (($oldChild->previousSibling != null) && ($oldChild->nextSibling != null)) {
$oldChild->previousSibling->nextSibling =& $oldChild->nextSibling;
$oldChild->nextSibling->previousSibling =& $oldChild->previousSibling;
}
else if (($oldChild->previousSibling != null) && ($oldChild->nextSibling == null)) {
$this->lastChild =& $oldChild->previousSibling;
unset($oldChild->previousSibling->nextSibling);
$oldChild->previousSibling->nextSibling = null;
}
else if (($oldChild->previousSibling == null) && ($oldChild->nextSibling != null)) {
unset($oldChild->nextSibling->previousSibling);
$oldChild->nextSibling->previousSibling = null;
$this->firstChild =& $oldChild->nextSibling;
}
else if (($oldChild->previousSibling == null) && ($oldChild->nextSibling == null)) {
unset($this->firstChild);
$this->firstChild = null;
unset($this->lastChild);
$this->lastChild = null;
}
$total = $this->childCount;
//remove node from childNodes
for ($i = 0; $i < $total; $i++) {
if ($i == ($total - 1)) {
array_splice($this->childNodes, $i, 1);
}
else if ($i >= $index) {
$this->childNodes[$i] =& $this->childNodes[($i + 1)];
}
}
$this->childCount--;
$oldChild->clearReferences();
return $oldChild;
}
}
DOMIT_DOMException::raiseException(DOMIT_NOT_FOUND_ERR,
('Target node for removeChild not found.'));
} //removeChild
/**
* Searches the element tree for an element with the specified attribute name and value.
* @param string The value of the attribute
* @param string The name of the attribute
* @param boolean True if the first found node is to be returned as a node instead of a nodelist
* @param boolean True if uid is to be considered an attribute
* @return object A NodeList of found elements, or null
*/
function &getElementsByAttribute($attrName = 'id', $attrValue = '',
$returnFirstFoundNode = false, $treatUIDAsAttribute = false) {
require_once(DOMIT_INCLUDE_PATH . 'xml_domit_nodemaps.php');
$nodelist = new DOMIT_NodeList();
switch ($this->nodeType) {
case DOMIT_ELEMENT_NODE:
$this->_getElementsByAttribute($nodelist, $attrName, $attrValue,
$returnFirstFoundNode, $treatUIDAsAttribute);
break;
case DOMIT_DOCUMENT_NODE:
if ($this->documentElement != null) {
$this->documentElement->_getElementsByAttribute($nodelist,
$attrName, $attrValue, $returnFirstFoundNode, $treatUIDAsAttribute);
}
break;
}
if ($returnFirstFoundNode) {
if ($nodelist->getLength() > 0) {
return $nodelist->item(0);
}
$null = null;
return $null;
}
return $nodelist;
} //getElementsByAttribute
/**
* Searches the element tree for an element with the specified attribute name and value.
* @param object The node list of found elements
* @param string The value of the attribute
* @param string The name of the attribute
* @param boolean True if the first found node is to be returned as a node instead of a nodelist
* @param boolean True if uid is to be considered an attribute
* @param boolean True the node has been found
*/
function _getElementsByAttribute(&$nodelist, $attrName, $attrValue,
$returnFirstFoundNode, $treatUIDAsAttribute, $foundNode = false) {
if (!($foundNode && $returnFirstFoundNode)) {
if (($this->getAttribute($attrName) == $attrValue) ||
($treatUIDAsAttribute && ($attrName == 'uid') && ($this->uid == $attrValue))) {
$nodelist->appendNode($this);
$foundNode = true;
if ($returnFirstFoundNode) return;
}
$total = $this->childCount;
for ($i = 0; $i < $total; $i++) {
$currNode =& $this->childNodes[$i];
if ($currNode->nodeType == DOMIT_ELEMENT_NODE) {
$currNode->_getElementsByAttribute($nodelist,
$attrName, $attrValue, $returnFirstFoundNode,
$treatUIDAsAttribute, $foundNode);
}
}
}
} //_getElementsByAttribute
} //DOMIT_Lite_ChildNodes_Interface
/**
* A class representing the DOM Document
*
* @package domit-xmlparser
* @subpackage domit-xmlparser-lite
* @author John Heinstein <johnkarl@nbnet.nb.ca>
*/
class DOMIT_Lite_Document extends DOMIT_Lite_ChildNodes_Interface {
/** @var string The xml declaration text */
var $xmlDeclaration;
/** @var string The doctype text */
var $doctype;
/** @var Object A reference to the root node of the DOM document */
var $documentElement;
/** @var string The parser used to process the DOM document, either "EXPAT" or "SAXY_LITE" */
var $parser;
/** @var Object A reference to the DOMIT_DOMImplementation object */
var $implementation;
/** @var Array User defined translation table for XML entities */
var $definedEntities = array();
/** @var boolean If true, loadXML or parseXML will attempt to detect and repair invalid xml */
var $doResolveErrors = false;
/** @var boolean True if whitespace is to be preserved during parsing */
var $preserveWhitespace = false;
/** @var boolean If true, elements tags will be rendered to string as <element></element> rather than <element/> */
var $doExpandEmptyElementTags = false;
/** @var array A list of exceptions to the empty element expansion rule */
var $expandEmptyElementExceptions = array();
/** @var int The error code returned by the SAX parser */
var $errorCode = 0;
/** @var string The error string returned by the SAX parser */
var $errorString = '';
/** @var object A reference to a http connection or proxy server, if one is required */
var $httpConnection = null;
/** @var boolean True if php_http_client_generic is to be used instead of PHP get_file_contents to retrieve xml data */
var $doUseHTTPClient = false;
/**
* DOM Document constructor
*/
function DOMIT_Lite_Document() {
$this->_constructor();
$this->xmlDeclaration = '';
$this->doctype = '';
$this->documentElement = null;
$this->nodeType = DOMIT_DOCUMENT_NODE;
$this->nodeName = '#document';
$this->ownerDocument =& $this;
$this->parser = '';
$this->implementation = new DOMIT_DOMImplementation();
} //DOMIT_Lite_Document
/**
* Specifies whether DOMIT! Lite will try to fix invalid XML before parsing begins
* @param boolean True if errors are to be resolved
*/
function resolveErrors($truthVal) {
$this->doResolveErrors = $truthVal;
} //resolveErrors
/**
* Specifies the parameters of the http conection used to obtain the xml data
* @param string The ip address or domain name of the connection
* @param string The path of the connection
* @param int The port that the connection is listening on
* @param int The timeout value for the connection
* @param string The user name, if authentication is required
* @param string The password, if authentication is required
*/
function setConnection($host, $path = '/', $port = 80, $timeout = 0, $user = null, $password = null) {
require_once(DOMIT_INCLUDE_PATH . 'php_http_client_generic.php');
$this->httpConnection = new php_http_client_generic($host, $path, $port, $timeout, $user, $password);
} //setConnection
/**
* Specifies whether DOMIT! preserves whitespace when parsing
* @param boolean True if whitespace is to be preserved
*/
function preserveWhitespace($truthVal) {
$this->preserveWhitespace = $truthVal;
} //preserveWhitespace
/**
* Specifies basic authentication for an http connection
* @param string The user name
* @param string The password
*/
function setAuthorization($user, $password) {
$this->httpConnection->setAuthorization($user, $password);
} //setAuthorization
/**
* Specifies that a proxy is to be used to obtain the xml data
* @param string The ip address or domain name of the proxy
* @param string The path to the proxy
* @param int The port that the proxy is listening on
* @param int The timeout value for the connection
* @param string The user name, if authentication is required
* @param string The password, if authentication is required
*/
function setProxyConnection($host, $path = '/', $port = 80, $timeout = 0, $user = null, $password = null) {
require_once(DOMIT_INCLUDE_PATH . 'php_http_proxy.php');
$this->httpConnection = new php_http_proxy($host, $path, $port, $timeout, $user, $password);
} //setProxyConnection
/**
* Specifies basic authentication for the proxy
* @param string The user name
* @param string The password
*/
function setProxyAuthorization($user, $password) {
$this->httpConnection->setProxyAuthorization($user, $password);
} //setProxyAuthorization
/**
* Specifies whether an HTTP client should be used to establish a connection
* @param boolean True if an HTTP client is to be used to establish the connection
*/
function useHTTPClient($truthVal) {
$this->doUseHTTPClient = $truthVal;
} //useHTTPClient
/**
* Returns the error code from the underlying SAX parser
* @return int The error code
*/
function getErrorCode() {
return $this->errorCode;
} //getErrorCode
/**
* Returns the error string from the underlying SAX parser
* @return string The error string
*/
function getErrorString() {
return $this->errorString;
} //getErrorString
/**
* Specifies whether elements tags will be rendered to string as <element></element> rather than <element/>
* @param boolean True if the expanded form is to be used
* @param mixed An array of tag names that should be excepted from expandEmptyElements rule (optional)
*/
function expandEmptyElementTags($truthVal, $expandEmptyElementExceptions = false) {
$this->doExpandEmptyElementTags = $truthVal;
if (is_array($expandEmptyElementExceptions)) {
$this->expandEmptyElementExceptions = $expandEmptyElementExceptions;
}
} //expandEmptyElementTags
/**
* Set the specified node as document element
* @param Object The node that is to become document element
* @return Object The new document element
*/
function &setDocumentElement(&$node) {
if ($node->nodeType == DOMIT_ELEMENT_NODE) {
if ($this->documentElement == null) {
parent::appendChild($node);
}
else {
parent::replaceChild($node, $this->documentElement);
}
$this->documentElement =& $node;
}
else {
DOMIT_DOMException::raiseException(DOMIT_HIERARCHY_REQUEST_ERR,
('Cannot add a node of type ' . get_class($node) . ' as a Document Element.'));
}
return $node;
} //setDocumentElement
/**
* Appends a node to the childNodes list of the current node
* @param Object The node to be appended
* @return Object The appended node
*/
function &appendChild(&$node) {
if ($node->nodeType == DOMIT_ELEMENT_NODE) {
if ($this->documentElement == null) {
parent::appendChild($node);
$this->setDocumentElement($node);
}
else {
//error thrown if documentElement already exists!
DOMIT_DOMException::raiseException(DOMIT_HIERARCHY_REQUEST_ERR,
('Cannot have more than one root node (documentElement) in a DOMIT_Document.'));
}
}
else {
DOMIT_DOMException::raiseException(DOMIT_HIERARCHY_REQUEST_ERR,
('Cannot add a node of type ' . get_class($node) . ' to a DOMIT_Document.'));
}
return $node;
} //appendChild
/**
* Replaces a node with another
* @param Object The new node
* @param Object The old node
* @return Object The new node
*/
function &replaceChild(&$newChild, &$oldChild) {
if (($this->documentElement != null) && ($oldChild->uid == $this->documentElement->uid)) {
if ($node->nodeType == DOMIT_ELEMENT_NODE) {
//replace documentElement with new node
$this->setDocumentElement($newChild);
}
else {
DOMIT_DOMException::raiseException(DOMIT_HIERARCHY_REQUEST_ERR,
('Cannot replace Document Element with a node of class ' . get_class($newChild)));
}
}
else {
if ($node->nodeType == DOMIT_ELEMENT_NODE) {
if ($this->documentElement != null) {
DOMIT_DOMException::raiseException(DOMIT_HIERARCHY_REQUEST_ERR,
('Cannot have more than one root node (documentElement) in a DOMIT_Document.'));
}
else {
parent::replaceChild($newChild, $oldChild);
}
}
else {
DOMIT_DOMException::raiseException(DOMIT_HIERARCHY_REQUEST_ERR,
('Nodes of class ' . get_class($newChild) . ' cannot be children of a DOMIT_Document.'));
}
}
return $newChild;
} //replaceChild
/**
* Inserts a node to the childNodes list of the current node
* @param Object The node to be inserted
* @param Object The node before which the insertion is to occur
* @return Object The inserted node
*/
function &insertBefore(&$newChild, &$refChild) {
$type = $newChild->nodeType;
if ($type == DOMIT_ELEMENT_NODE) {
if ($this->documentElement == null) {
parent::insertBefore($newChild, $refChild);
$this->setDocumentElement($newChild);
}
else {
//error thrown if documentElement already exists!
DOMIT_DOMException::raiseException(DOMIT_HIERARCHY_REQUEST_ERR,
('Cannot have more than one root node (documentElement) in a DOMIT_Document.'));
}
}
else {
DOMIT_DOMException::raiseException(DOMIT_HIERARCHY_REQUEST_ERR,
('Cannot insert a node of type ' . get_class($newChild) . ' to a DOMIT_Document.'));
}
return $newChild;
} //insertBefore
/**
* Removes a node from the childNodes list of the current node
* @param Object The node to be removed
* @return Object The removed node
*/
function &removeChild(&$oldChild) {
if (($this->documentElement != null) && ($oldChild->uid == $this->documentElement->uid)) {
parent::removeChild($oldChild);
$this->documentElement = null;
}
else {
parent::removeChild($oldChild);
}
$oldChild->clearReferences();
return $oldChild;
} //removeChild
/**
* Creates a new DOMIT_Lite_Element node
* @param string The tag name of the element
* @return Object The new element
*/
function &createElement($tagName) {
$node = new DOMIT_Lite_Element($tagName);
$node->ownerDocument = $this;
$reference =& $node;
return $node;
} //createElement
/**
* Creates a new DOMIT_Text node
* @param string The text of the node
* @return Object The new text node
*/
function &createTextNode($data) {
$node = new DOMIT_Lite_TextNode($data);
$node->ownerDocument = $this;
$reference =& $node;
return $reference;
} //createTextNode
/**
* Creates a new DOMIT_Lite_CDATASection node
* @param string The text of the CDATASection
* @return Object The new CDATASection node
*/
function &createCDATASection($data) {
$node = new DOMIT_Lite_CDATASection($data);
$node->ownerDocument = $this;
return $node;
} //createCDATASection
/**
* Retrieves a NodeList of child elements with the specified tag name
* @param string The matching element tag name
* @return Object A NodeList of found elements
*/
function &getElementsByTagName($tagName) {
$nodeList = new DOMIT_NodeList();
if ($this->documentElement != null) {
$this->documentElement->getNamedElements($nodeList, $tagName);
}
return $nodeList;
} //getElementsByTagName
/**
* Retrieves an element or DOMIT_NodeList of elements corresponding to an Xpath-like expression.
* @param string The query pattern
* @param int If a single node is to be returned (rather than the entire NodeList) the index of that node
* @return mixed A NodeList or single node that matches the pattern
*/
function &getElementsByPath($pattern, $nodeIndex = 0) {
require_once(DOMIT_INCLUDE_PATH . 'xml_domit_getelementsbypath.php');
$gebp = new DOMIT_GetElementsByPath();
$myResponse =& $gebp->parsePattern($this, $pattern, $nodeIndex);
return $myResponse;
} //getElementsByPath
/**
* Parses an xml string; first encodes string as UTF-8
* @param string The xml text to be parsed
* @param boolean True if SAXY is to be used instead of Expat
* @param boolean False if CDATA Section are to be generated as Text nodes
* @param boolean True if onLoad is to be called on each node after parsing
* @return boolean True if parsing is successful
*/
function parseXML_utf8($xmlText, $useSAXY = true, $preserveCDATA = true, $fireLoadEvent = false) {
return $this->parseXML(utf8_encode($xmlText), $useSAXY, $preserveCDATA, $fireLoadEvent);
} //parseXML_utf8
/**
* Parses an xml string
* @param string The xml text to be parsed
* @param boolean True if SAXY is to be used instead of Expat
* @param boolean False if CDATA Section are to be generated as Text nodes
* @param boolean True if onLoad is to be called on each node after parsing
* @return boolean True if parsing is successful
*/
function parseXML($xmlText, $useSAXY = true, $preserveCDATA = true, $fireLoadEvent = false) {
require_once(DOMIT_INCLUDE_PATH . 'xml_domit_utilities.php');
if ($this->doResolveErrors) {
require_once(DOMIT_INCLUDE_PATH . 'xml_domit_doctor.php');
$xmlText = DOMIT_Doctor::fixAmpersands($xmlText);
}
if (DOMIT_Utilities::validateXML($xmlText)) {
$domParser = new DOMIT_Lite_Parser();
if ($useSAXY || (!function_exists('xml_parser_create'))) {
//use SAXY parser to populate xml tree
$this->parser = 'SAXY_LITE';
$success = $domParser->parseSAXY($this, $xmlText, $preserveCDATA, $this->definedEntities);
}
else {
//use Expat parser to populate xml tree
$this->parser = 'EXPAT';
$success = $domParser->parse($this, $xmlText, $preserveCDATA);
}
if ($fireLoadEvent && ($this->documentElement != null)) $this->load($this->documentElement);
return $success;
}
return false;
} //parseXML
/**
* Parses an xml file; first encodes text as UTF-8
* @param string The xml file to be parsed
* @param boolean True if SAXY is to be used instead of Expat
* @param boolean False if CDATA Section are to be generated as Text nodes
* @param boolean True if onLoad is to be called on each node after parsing
* @return boolean True if parsing is successful
*/
function loadXML_utf8($filename, $useSAXY = true, $preserveCDATA = true, $fireLoadEvent = false) {
$xmlText = $this->getTextFromFile($filename);
return $this->parseXML_utf8($xmlText, $useSAXY, $preserveCDATA, $fireLoadEvent);
} //loadXML_utf8
/**
* Parses an xml file
* @param string The xml file to be parsed
* @param boolean True if SAXY is to be used instead of Expat
* @param boolean False if CDATA Section are to be generated as Text nodes
* @param boolean True if onLoad is to be called on each node after parsing
* @return boolean True if parsing is successful
*/
function loadXML($filename, $useSAXY = true, $preserveCDATA = true, $fireLoadEvent = false) {
$xmlText = $this->getTextFromFile($filename);
return $this->parseXML($xmlText, $useSAXY, $preserveCDATA, $fireLoadEvent);
} //loadXML
/**
* Establishes a connection, given an url
* @param string The url of the data
*/
function establishConnection($url) {
require_once(DOMIT_INCLUDE_PATH . 'php_http_client_generic.php');
$host = php_http_connection::formatHost($url);
$host = substr($host, 0, strpos($host, '/'));
$this->setConnection($host);
} //establishConnection
/**
* Retrieves text from a file
* @param string The file path
* @return string The text contained in the file
*/
function getTextFromFile($filename) {
if ($this->doUseHTTPClient && (substr($filename, 0, 5) == 'http:')) {
$this->establishConnection($filename);
}
if ($this->httpConnection != null) {
$response =& $this->httpConnection->get($filename);
$this->httpConnection->disconnect();
return $response->getResponse();
}
else if (function_exists('file_get_contents')) {
//if (file_exists($filename)) {
return file_get_contents($filename);
//}
}
else {
require_once(DOMIT_INCLUDE_PATH . 'php_file_utilities.php');
$fileContents =& php_file_utilities::getDataFromFile($filename, 'r');
return $fileContents;
}
return '';
} //getTextFromFile
/**
* Saves the current DOM document as an xml file; first encodes text as UTF-8
* @param string The path of the xml file
* @param boolean True if xml text is to be normalized before saving
* @return boolean True if save is successful
*/
function saveXML_utf8($filename, $normalized=false) {
if ($normalized) {
$stringRep = $this->toNormalizedString(false, true); //param 2 is $subEntities
}
else {
$stringRep = $this->toString(false, true);
}
return $this->saveTextToFile($filename, utf8_encode($stringRep));
} //saveXML_utf8
/**
* Saves the current DOM document as an xml file
* @param string The path of the xml file
* @param boolean True if xml text is to be normalized before saving
* @return boolean True if save is successful
*/
function saveXML($filename, $normalized=false) {
if ($normalized) {
$stringRep = $this->toNormalizedString(false, true);
}
else {
$stringRep = $this->toString(false, true);
}
if ($this->xmlDeclaration) {
$stringRep = $this->xmlDeclaration . "\n" . $stringRep;
}
return $this->saveTextToFile($filename, $stringRep);
} //saveXML
/**
* Saves text to a file
* @param string The file path
* @param string The text to be saved
* @return boolean True if the save is successful
*/
function saveTextToFile($filename, $text) {
if (function_exists('file_put_contents')) {
file_put_contents($filename, $text);
}
else {
require_once(DOMIT_INCLUDE_PATH . 'php_file_utilities.php');
php_file_utilities::putDataToFile($filename, $text, 'w');
}
return (file_exists($filename) && is_writable($filename));
} //saveTextToFile
/**
* Indicates the SAX parser used to parse the current document
* @return string Either "SAXY_LITE" or "EXPAT"
*/
function parsedBy() {
return $this->parser;
} //parsedBy
/**
* Returns the concatented text of the current node and its children
* @return string The concatented text of the current node and its children
*/
function getText() {
if ($this->documentElement != null) {
$root =& $this->documentElement;
return $root->getText();
}
return '';
} //getText
/**
* Returns the doctype text
* @return string The doctype text, or an emty string
*/
function getDocType() {
return $this->doctype;
} //getDocType
/**
* Returns the xml declaration text
* @return mixed The xml declaration text, or an empty string
*/
function getXMLDeclaration() {
return $this->xmlDeclaration;
} //getXMLDeclaration
/**
* Returns the xml declaration text
* @return mixed The xml declaration text, or an empty string
*/
function setXMLDeclaration( $decl ) {
$this->xmlDeclaration = $decl;
} //setXMLDeclaration
/**
* Returns a reference to the DOMIT_DOMImplementation object
* @return Object A reference to the DOMIT_DOMImplementation object
*/
function &getDOMImplementation() {
return $this->implementation;
} //getDOMImplementation
/**
* Manages the firing of the onLoad() event
* @param Object The parent node of the current recursion
*/
function load(&$contextNode) {
$total = $contextNode->childCount;
for ($i = 0; $i < $total; $i++) {
$currNode =& $contextNode->childNodes[$i];
$currNode->ownerDocument->load($currNode);
}
$contextNode->onLoad();
} //load
/**
* Returns the current version of DOMIT! Lite
* @return Object The current version of DOMIT! Lite
*/
function getVersion() {
return DOMIT_LITE_VERSION;
} //getVersion
/**
* Appends an array of entity mappings to the existing translation table
*
* Intended mainly to facilitate the conversion of non-ASCII entities into equivalent characters
*
* @param array A list of entity mappings in the format: array('&' => '&');
*/
function appendEntityTranslationTable($table) {
$this->definedEntities = $table;
global $DOMIT_defined_entities_flip;
$DOMIT_defined_entities_flip = array_flip($table);
} //appendEntityTranslationTable
/**
* Generates an array representation of the node and its children
* @return Array A representation of the node and its children
*/
function toArray() {
$arReturn = array($this->nodeName => array());
$total = $this->childCount;
for ($i = 0; $i < $total; $i++) {
$arReturn[$this->nodeName][$i] = $this->childNodes[$i]->toArray();
}
return $arReturn;
} //toArray
/**
* Copies a node and/or its children
* @param boolean True if all child nodes are also to be cloned
* @return Object A copy of the node and/or its children
*/
function &cloneNode($deep = false) {
$className = get_class($this);
$clone = new $className($this->nodeName);
if ($deep) {
$total = $this->childCount;
for ($i = 0; $i < $total; $i++) {
$currentChild =& $this->childNodes[$i];
$clone->appendChild($currentChild->cloneNode($deep));
}
}
return $clone;
} //cloneNode
/**
* Generates a string representation of the node and its children
* @param boolean True if HTML readable output is desired
* @param boolean True if illegal xml characters in text nodes and attributes should be converted to entities
* @return string The string representation
*/
function toString($htmlSafe = false, $subEntities = false) {
$result = '';
$total = $this->childCount;
for ($i = 0; $i < $total; $i++) {
$result .= $this->childNodes[$i]->toString(false, $subEntities);
}
if ($htmlSafe) $result = $this->forHTML($result);
return $result;
} //toString
} //DOMIT_Lite_Document
/**
* A class representing the DOM Element
*
* @package domit-xmlparser
* @subpackage domit-xmlparser-lite
* @author John Heinstein <johnkarl@nbnet.nb.ca>
*/
class DOMIT_Lite_Element extends DOMIT_Lite_ChildNodes_Interface {
/**
* DOM Element constructor
* @param string The tag name of the element
*/
function DOMIT_Lite_Element($tagName) {
$this->_constructor();
$this->nodeType = DOMIT_ELEMENT_NODE;
$this->nodeName = $tagName;
$this->attributes = array();
$this->childNodes = array();
} //DOMIT_Lite_Element
/**
* Returns the tag name of the element
* @return string The tag name of the element
*/
function getTagName() {
return $this->nodeName;
} //getTagName
/**
* Adds elements with the specified tag name to a NodeList collection
* @param Object The NodeList collection
* @param string The tag name of matching elements
*/
function getNamedElements(&$nodeList, $tagName) {
if (($this->nodeName == $tagName) || ($tagName == '*')) {
$nodeList->appendNode($this);
}
$total = $this->childCount;
for ($i = 0; $i < $total; $i++) {
$this->childNodes[$i]->getNamedElements($nodeList, $tagName);
}
} //getNamedElements
/**
* Returns the concatented text of the current node and its children
* @return string The concatented text of the current node and its children
*/
function getText() {
$text = '';
$numChildren = $this->childCount;
for ($i = 0; $i < $numChildren; $i++) {
$child =& $this->childNodes[$i];
$text .= $child->getText();
}
return $text;
} //getText
/**
* If a child text node exists, sets the nodeValue to $data. A child text node is created if none exists
* @param string The text data of the node
*/
function setText($data) {
switch ($this->childCount) {
case 1:
if ($this->firstChild->nodeType == DOMIT_TEXT_NODE) {
$this->firstChild->setText($data);
}
break;
case 0:
$childTextNode =& $this->ownerDocument->createTextNode($data);
$this->appendChild($childTextNode);
break;
default:
//do nothing. Maybe throw error???
}
} //setText
/**
* Retrieves a NodeList of child elements with the specified tag name
* @param string The matching element tag name
* @return Object A NodeList of found elements
*/
function &getElementsByTagName($tagName) {
$nodeList = new DOMIT_NodeList();
$this->getNamedElements($nodeList, $tagName);
return $nodeList;
} //getElementsByTagName
/**
* Retrieves an element or DOMIT_NodeList of elements corresponding to an Xpath-like expression.
* @param string The query pattern
* @param int If a single node is to be returned (rather than the entire NodeList) the index of that node
* @return mixed A NodeList or single node that matches the pattern
*/
function &getElementsByPath($pattern, $nodeIndex = 0) {
require_once(DOMIT_INCLUDE_PATH . 'xml_domit_getelementsbypath.php');
$gebp = new DOMIT_GetElementsByPath();
$myResponse = $gebp->parsePattern($this, $pattern, $nodeIndex);
return $myResponse;
} //getElementsByPath
/**
* Gets the value of the specified attribute, if it exists
* @param string The attribute name
* @return string The attribute value
*/
function getAttribute($name) {
if ($this->hasAttribute($name)) {
return $this->attributes[$name];
}
else {
/*
DOMIT_DOMException::raiseException(DOMIT_NOT_FOUND_ERR,
('No attribute named ' . $name . 'exists.'));
*/
// Joomla! hack
return null;
}
} //getAttribute
/**
* Sets the value of the specified attribute; creates a new attribute if one doesn't exist
* @param string The attribute name
* @param string The desired attribute value
*/
function setAttribute($name, $value) {
$this->attributes[$name] = $value;
} //setAttribute
/**
* Removes the specified attribute
* @param string The name of the attribute to be removed
*/
function removeAttribute($name) {
if ($this->hasAttribute($name)) {
unset($this->attributes[$name]);
}
} //removeAttribute
/**
* Determines whether an attribute with the specified name exists
* @param string The name of the attribute
* @return boolean True if the attribute exists
*/
function hasAttribute($name) {
return isset($this->attributes[$name]);
} //hasAttribute
/**
* Collapses adjacent text nodes in entire element subtree
*/
function normalize() {
if ($this->hasChildNodes()) {
$currNode =& $this->childNodes[0];
while ($currNode->nextSibling != null) {
$nextNode =& $currNode->nextSibling;
if (($currNode->nodeType == DOMIT_TEXT_NODE) &&
($nextNode->nodeType == DOMIT_TEXT_NODE)) {
$currNode->nodeValue .= $nextNode->nodeValue;
$this->removeChild($nextNode);
}
else {
$currNode->normalize();
}
if ($currNode->nextSibling != null) {
$currNode =& $currNode->nextSibling;
}
}
}
} //normalize
/**
* Generates an array representation of the node and its children
* @return Array A representation of the node and its children
*/
function toArray() {
$arReturn = array($this->nodeName => array("attributes" => $this->attributes));
$total = $this->childCount;
for ($i = 0; $i < $total; $i++) {
$arReturn[$this->nodeName][$i] = $this->childNodes[$i]->toArray();
}
return $arReturn;
} //toArray
/**
* Copies a node and/or its children
* @param boolean True if all child nodes are also to be cloned
* @return Object A copy of the node and/or its children
*/
function &cloneNode($deep = false) {
$className = get_class($this);
$clone = new $className($this->nodeName);
$clone->attributes = $this->attributes;
if ($deep) {
$total = $this->childCount;
for ($i = 0; $i < $total; $i++) {
$currentChild =& $this->childNodes[$i];
$clone->appendChild($currentChild->cloneNode($deep));
}
}
return $clone;
} //cloneNode
/**
* Generates a string representation of the node and its children
* @param boolean True if HTML readable output is desired
* @param boolean True if illegal xml characters in text nodes and attributes should be converted to entities
* @return string The string representation
*/
function toString($htmlSafe = false, $subEntities = false) {
require_once(DOMIT_INCLUDE_PATH . 'xml_domit_utilities.php');
global $DOMIT_defined_entities_flip;
$result = '<' . $this->nodeName;
//get attributes
foreach ($this->attributes as $key => $value) {
$result .= ' ' . $key . '="';
$result .= $subEntities ? DOMIT_Utilities::convertEntities($value,
$DOMIT_defined_entities_flip) : $value;
$result .= '"';
}
//get children
$myNodes =& $this->childNodes;
$total = count($myNodes);
if ($total != 0) {
$result .= '>';
for ($i = 0; $i < $total; $i++) {
$child =& $myNodes[$i];
$result .= $child->toString(false, $subEntities);
}
$result .= '</' . $this->nodeName . '>';
}
else {
if ($this->ownerDocument->doExpandEmptyElementTags) {
if (in_array($this->nodeName, $this->ownerDocument->expandEmptyElementExceptions)) {
$result .= ' />';
}
else {
$result .= '></' . $this->nodeName . '>';
}
}
else {
if (in_array($this->nodeName, $this->ownerDocument->expandEmptyElementExceptions)) {
$result .= '></' . $this->nodeName . '>';
}
else {
$result .= ' />';
}
}
}
if ($htmlSafe) $result = $this->forHTML($result);
return $result;
} //toString
} //DOMIT_Lite_Element
/**
* A class representing the DOM Text Node
*
* @package domit-xmlparser
* @subpackage domit-xmlparser-lite
* @author John Heinstein <johnkarl@nbnet.nb.ca>
*/
class DOMIT_Lite_TextNode extends DOMIT_Lite_Node {
/**
* DOM Text Node constructor
* @param string The text of the node
*/
function DOMIT_Lite_TextNode($data) {
$this->_constructor();
$this->nodeType = DOMIT_TEXT_NODE;
$this->nodeName = '#text';
$this->setText($data);
} //DOMIT_Lite_TextNode
/**
* Returns the text contained in the current node
* @return string The text of the current node
*/
function getText() {
return $this->nodeValue;
} //getText
/**
* Sets the text contained in the current node to $data.
* @param string The text data of the node
*/
function setText($data) {
$this->nodeValue = $data;
} //setText
/**
* Generates an array representation of the node and its children
* @return Array A representation of the node and its children
*/
function toArray() {
return $this->toString();
} //toArray
/**
* Copies a node and/or its children
* @param boolean True if all child nodes are also to be cloned
* @return Object A copy of the node and/or its children
*/
function &cloneNode($deep = false) {
$className = get_class($this);
$clone = new $className($this->nodeValue);
return $clone;
} //cloneNode
/**
* Generates a string representation of the node and its children
* @param boolean True if HTML readable output is desired
* @param boolean True if illegal xml characters should be converted to entities
* @return string The string representation
*/
function toString($htmlSafe = false, $subEntities = false) {
require_once(DOMIT_INCLUDE_PATH . 'xml_domit_utilities.php');
global $DOMIT_defined_entities_flip;
$result = $subEntities ? DOMIT_Utilities::convertEntities($this->nodeValue,
$DOMIT_defined_entities_flip) : $this->nodeValue;
if ($htmlSafe) $result = $this->forHTML($result);
return $result;
} //toString
} //DOMIT_Lite_TextNode
/**
* A class representing the DOM CDATA Section
*
* @package domit-xmlparser
* @subpackage domit-xmlparser-lite
* @author John Heinstein <johnkarl@nbnet.nb.ca>
*/
class DOMIT_Lite_CDATASection extends DOMIT_Lite_TextNode {
/**
* DOM CDATA Section node constructor
* @param string The text of the node
*/
function DOMIT_Lite_CDATASection($data) {
$this->_constructor();
$this->nodeType = DOMIT_CDATA_SECTION_NODE;
$this->nodeName = '#cdata-section';
$this->setText($data);
} //DOMIT_Lite_CDATASection
/**
* Generates a string representation of the node and its children
* @param boolean True if HTML readable output is desired
* @param boolean True if illegal xml characters should be converted to entities
* @return string The string representation
*/
function toString($htmlSafe = false, $subEntities = false) {
$result = '<![CDATA[';
$result .= $subEntities ? str_replace("]]>", "]]>", $this->nodeValue) :
$this->nodeValue;
$result .= ']]>';
if ($htmlSafe) $result = $this->forHTML($result);
return $result;
} //toString
} //DOMIT_Lite_CDATASection
/**
* Manages the generation of a DOMIT! document from SAX events
*
* @package domit-xmlparser
* @subpackage domit-xmlparser-lite
* @author John Heinstein <johnkarl@nbnet.nb.ca>
*/
class DOMIT_Lite_Parser {
/** @var Object A reference to the resulting xmldoc */
var $xmlDoc = null;
/** @var Object A reference to the current node in the parsing process */
var $currentNode = null;
/** @var Object A reference to the last child in the parsing process */
var $lastChild = null;
/** @var boolean True if currently parsing a CDATA Section */
var $inCDATASection = false; //flag for Expat
/** @var boolean True if currently parsing a Text node */
var $inTextNode = false;
/** @var boolean True is CDATA Section nodes are not to be converted into Text nodes */
var $preserveCDATA;
/** @var string A container for holding the currently parsed text data */
var $parseContainer = '';
/** @var string The current docutype text */
var $parseItem = '';
/**
* Parses xml text using Expat
* @param Object A reference to the DOM document that the xml is to be parsed into
* @param string The text to be parsed
* @param boolean True if CDATA Section nodes are not to be converted into Text nodes
* @return boolean True if the parsing is successful
*/
function parse (&$myXMLDoc, $xmlText, $preserveCDATA = true) {
$this->xmlDoc =& $myXMLDoc;
$this->lastChild =& $this->xmlDoc;
$this->preserveCDATA = $preserveCDATA;
//create instance of expat parser (should be included in php distro)
if (version_compare(phpversion(), '5.0', '<=')) {
$parser = xml_parser_create('');
}
else {
$parser = xml_parser_create();
}
//set handlers for SAX events
xml_set_object($parser, $this);
xml_set_element_handler($parser, 'startElement', 'endElement');
xml_set_character_data_handler($parser, 'dataElement');
xml_set_default_handler($parser, 'defaultDataElement');
xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
if (!$this->xmlDoc->preserveWhitespace) {
xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 1);
}
else {
xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 0);
}
//parse out whitespace - (XML_OPTION_SKIP_WHITE = 1 does not
//seem to work consistently across versions of PHP and Expat
if (!$this->xmlDoc->preserveWhitespace) {
$xmlText = preg_replace('#>' . "[[:space:]]+" . '<#i' , '><', $xmlText);
}
$success = xml_parse($parser, $xmlText);
$this->xmlDoc->errorCode = xml_get_error_code($parser);
$this->xmlDoc->errorString = xml_error_string($this->xmlDoc->errorCode);
xml_parser_free($parser);
return $success;
} //parse
/**
* Parses xml text using SAXY
* @param Object A reference to the DOM document that the xml is to be parsed into
* @param string The text to be parsed
* @param boolean True if CDATA Section nodes are not to be converted into Text nodes
* @return boolean True if the parsing is successful
*/
function parseSAXY(&$myXMLDoc, $xmlText, $preserveCDATA, $definedEntities) {
require_once(DOMIT_INCLUDE_PATH . 'xml_saxy_lite_parser.php');
$this->xmlDoc =& $myXMLDoc;
$this->lastChild =& $this->xmlDoc;
//create instance of SAXY parser
$parser = new SAXY_Lite_Parser();
$parser->appendEntityTranslationTable($definedEntities);
//not yet implemented in SAXY!!!
$parser->preserveWhitespace = $this->xmlDoc->preserveWhitespace;
$parser->xml_set_element_handler(array(&$this, 'startElement'), array(&$this, 'endElement'));
$parser->xml_set_character_data_handler(array(&$this, 'dataElement'));
if ($preserveCDATA) {
$parser->xml_set_cdata_section_handler(array(&$this, 'cdataElement'));
}
$success = $parser->parse($xmlText);
$this->xmlDoc->errorCode = $parser->xml_get_error_code();
$this->xmlDoc->errorString = $parser->xml_error_string($this->xmlDoc->errorCode);
return $success;
} //parseSAXY
/**
* Generates and appends a new text node from the parseContainer text
*/
function dumpTextNode() {
//traps for mixed content
$currentNode =& $this->xmlDoc->createTextNode($this->parseContainer);
$this->lastChild->appendChild($currentNode);
$this->inTextNode = false;
$this->parseContainer = '';
} //dumpTextNode
/**
* Catches a start element event and processes the data
* @param Object A reference to the current SAX parser
* @param string The tag name of the current element
* @param Array An array of the element attributes
*/
function startElement(&$parser, $name, $attrs) {
if ($this->inTextNode) {
$this->dumpTextNode();
}
$currentNode =& $this->xmlDoc->createElement($name);
$currentNode->attributes = $attrs;
$this->lastChild->appendChild($currentNode);
$this->lastChild =& $currentNode;
} //startElement
/**
* Catches an end element event and processes the data
* @param Object A reference to the current SAX parser
* @param string The tag name of the current element
*/
function endElement(&$parser, $name) {
if ($this->inTextNode) {
$this->dumpTextNode();
}
$this->lastChild =& $this->lastChild->parentNode;
} //endElement
/**
* Catches a data event and processes the text
* @param Object A reference to the current SAX parser
* @param string The current text data
*/
function dataElement(&$parser, $data) {
if (!$this->inCDATASection) $this->inTextNode = true;
$this->parseContainer .= $data;
} //dataElement
/**
* Catches a CDATA Section event and processes the text
* @param Object A reference to the current SAX parser
* @param string The current text data
*/
function cdataElement(&$parser, $data) {
$currentNode =& $this->xmlDoc->createCDATASection($data);
$this->lastChild->appendChild($currentNode);
} //cdataElement
/**
* Catches a default data event and processes the data
* @param Object A reference to the current SAX parser
* @param string The current data
*/
function defaultDataElement(&$parser, $data) {
if (strlen($data) > 2){
$pre = strtoupper(substr($data, 0, 3));
switch ($pre) {
case '<![': //cdata section coming
if ($this->preserveCDATA) {
$this->inCDATASection = true;
}
break;
case ']]>': //cdata remnant - ignore
if ($this->preserveCDATA) {
$currentNode =& $this->xmlDoc->createCDATASection($this->parseContainer);
$this->lastChild->appendChild($currentNode);
$this->inCDATASection = false;
$this->parseContainer = '';
}
else {
$this->dumpTextNode();
}
break;
}
}
} //defaultDataElement
} //DOMIT_Lite_Parser
?>