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Editing: class.xmlschema.php

<?php

if (!defined('W3TC')) {
    die();
}

/**
* parses an XML Schema, allows access to it's data, other utility methods.
* imperfect, no validation... yet, but quite functional.
*
* @author   Dietrich Ayala <dietrich@ganx4.com>
* @author   Scott Nichol <snichol@users.sourceforge.net>
* @version  $Id: class.xmlschema.php,v 1.53 2010/04/26 20:15:08 snichol Exp $
* @access   public
*/
class nusoap_xmlschema extends nusoap_base  {

// files
	var $schema = '';
	var $xml = '';
	// namespaces
	var $enclosingNamespaces;
	// schema info
	var $schemaInfo = array();
	var $schemaTargetNamespace = '';
	// types, elements, attributes defined by the schema
	var $attributes = array();
	var $complexTypes = array();
	var $complexTypeStack = array();
	var $currentComplexType = null;
	var $elements = array();
	var $elementStack = array();
	var $currentElement = null;
	var $simpleTypes = array();
	var $simpleTypeStack = array();
	var $currentSimpleType = null;
	// imports
	var $imports = array();
	// parser vars
	var $parser;
	var $position = 0;
	var $depth = 0;
	var $depth_array = array();
	var $message = array();
	var $defaultNamespace = array();

/**
	* constructor
	*
	* @param    string $schema schema document URI
	* @param    string $xml xml document URI
	* @param	string $namespaces namespaces defined in enclosing XML
	* @access   public
	*/
	function __construct($schema='',$xml='',$namespaces=array()){
		parent::nusoap_base();
		$this->debug('nusoap_xmlschema class instantiated, inside constructor');
		// files
		$this->schema = $schema;
		$this->xml = $xml;

// namespaces
		$this->enclosingNamespaces = $namespaces;
		$this->namespaces = array_merge($this->namespaces, $namespaces);

// parse schema file
		if($schema != ''){
			$this->debug('initial schema file: '.$schema);
			$this->parseFile($schema, 'schema');
		}

// parse xml file
		if($xml != ''){
			$this->debug('initial xml file: '.$xml);
			$this->parseFile($xml, 'xml');
		}

}

/**
    * parse an XML file
    *
    * @param string $xml path/URL to XML file
    * @param string $type (schema | xml)
	* @return boolean
    * @access public
    */
	function parseFile($xml,$type){
		// parse xml file
		if($xml != ""){
			$xmlStr = @join("",@file($xml));
			if($xmlStr == ""){
				$msg = 'Error reading XML from '.$xml;
				$this->setError($msg);
				$this->debug($msg);
			return false;
			} else {
				$this->debug("parsing $xml");
				$this->parseString($xmlStr,$type);
				$this->debug("done parsing $xml");
			return true;
			}
		}
		return false;
	}

/**
	* parse an XML string
	*
	* @param    string $xml path or URL
    * @param	string $type (schema|xml)
	* @access   private
	*/
	function parseString($xml,$type){
		// parse xml string
		if($xml != ""){

// Create an XML parser.
	    	$this->parser = xml_parser_create();
	    	// Set the options for parsing the XML data.
	    	xml_parser_set_option($this->parser, XML_OPTION_CASE_FOLDING, 0);

// Set the object for the parser.
	    	xml_set_object($this->parser, $this);

// Set the element handlers for the parser.
			if($type == "schema"){
		    	xml_set_element_handler($this->parser, 'schemaStartElement','schemaEndElement');
		    	xml_set_character_data_handler($this->parser,'schemaCharacterData');
			} elseif($type == "xml"){
				xml_set_element_handler($this->parser, 'xmlStartElement','xmlEndElement');
		    	xml_set_character_data_handler($this->parser,'xmlCharacterData');
			}

// Parse the XML file.
		    if(!xml_parse($this->parser,$xml,true)){
			// Display an error message.
				$errstr = sprintf('XML error parsing XML schema on line %d: %s',
				xml_get_current_line_number($this->parser),
				xml_error_string(xml_get_error_code($this->parser))
				);
				$this->debug($errstr);
				$this->debug("XML payload:\n" . $xml);
				$this->setError($errstr);
	    	}

xml_parser_free($this->parser);
		} else{
			$this->debug('no xml passed to parseString()!!');
			$this->setError('no xml passed to parseString()!!');
		}
	}

/**
	 * gets a type name for an unnamed type
	 *
	 * @param	string	Element name
	 * @return	string	A type name for an unnamed type
	 * @access	private
	 */
	function CreateTypeName($ename) {
		$scope = '';
		for ($i = 0; $i < count($this->complexTypeStack); $i++) {
			$scope .= $this->complexTypeStack[$i] . '_';
		}
		return $scope . $ename . '_ContainedType';
	}

/**
	* start-element handler
	*
	* @param    string $parser XML parser object
	* @param    string $name element name
	* @param    string $attrs associative array of attributes
	* @access   private
	*/
	function schemaStartElement($parser, $name, $attrs) {

// position in the total number of elements, starting from 0
		$pos = $this->position++;
		$depth = $this->depth++;
		// set self as current value for this depth
		$this->depth_array[$depth] = $pos;
		$this->message[$pos] = array('cdata' => '');
		if ($depth > 0) {
			$this->defaultNamespace[$pos] = $this->defaultNamespace[$this->depth_array[$depth - 1]];
		} else {
			$this->defaultNamespace[$pos] = false;
		}

// get element prefix
		if($prefix = $this->getPrefix($name)){
			// get unqualified name
			$name = $this->getLocalPart($name);
		} else {
        	$prefix = '';
        }

// loop thru attributes, expanding, and registering namespace declarations
        if(count($attrs) > 0){
        	foreach($attrs as $k => $v){
                // if ns declarations, add to class level array of valid namespaces
				if(preg_match('/^xmlns/',$k)){
                	//$this->xdebug("$k: $v");
                	//$this->xdebug('ns_prefix: '.$this->getPrefix($k));
                	if($ns_prefix = substr(strrchr($k,':'),1)){
                		//$this->xdebug("Add namespace[$ns_prefix] = $v");
						$this->namespaces[$ns_prefix] = $v;
					} else {
						$this->defaultNamespace[$pos] = $v;
						if (! $this->getPrefixFromNamespace($v)) {
							$this->namespaces['ns'.(count($this->namespaces)+1)] = $v;
						}
					}
					if($v == 'http://www.w3.org/2001/XMLSchema' || $v == 'http://www.w3.org/1999/XMLSchema' || $v == 'http://www.w3.org/2000/10/XMLSchema'){
						$this->XMLSchemaVersion = $v;
						$this->namespaces['xsi'] = $v.'-instance';
					}
				}
        	}
        	foreach($attrs as $k => $v){
                // expand each attribute
                $k = strpos($k,':') ? $this->expandQname($k) : $k;
                $v = strpos($v,':') ? $this->expandQname($v) : $v;
        		$eAttrs[$k] = $v;
        	}
        	$attrs = $eAttrs;
        } else {
        	$attrs = array();
        }
		// find status, register data
		switch($name){
			case 'all':			// (optional) compositor content for a complexType
			case 'choice':
			case 'group':
			case 'sequence':
				//$this->xdebug("compositor $name for currentComplexType: $this->currentComplexType and currentElement: $this->currentElement");
				$this->complexTypes[$this->currentComplexType]['compositor'] = $name;
				//if($name == 'all' || $name == 'sequence'){
				//	$this->complexTypes[$this->currentComplexType]['phpType'] = 'struct';
				//}
			break;
			case 'attribute':	// complexType attribute
            	//$this->xdebug("parsing attribute $attrs[name] $attrs[ref] of value: ".$attrs['http://schemas.xmlsoap.org/wsdl/:arrayType']);
            	$this->xdebug("parsing attribute:");
            	$this->appendDebug($this->varDump($attrs));
				if (!isset($attrs['form'])) {
					// TODO: handle globals
					$attrs['form'] = $this->schemaInfo['attributeFormDefault'];
				}
            	if (isset($attrs['http://schemas.xmlsoap.org/wsdl/:arrayType'])) {
					$v = $attrs['http://schemas.xmlsoap.org/wsdl/:arrayType'];
					if (!strpos($v, ':')) {
						// no namespace in arrayType attribute value...
						if ($this->defaultNamespace[$pos]) {
							// ...so use the default
							$attrs['http://schemas.xmlsoap.org/wsdl/:arrayType'] = $this->defaultNamespace[$pos] . ':' . $attrs['http://schemas.xmlsoap.org/wsdl/:arrayType'];
						}
					}
            	}
                if(isset($attrs['name'])){
					$this->attributes[$attrs['name']] = $attrs;
					$aname = $attrs['name'];
				} elseif(isset($attrs['ref']) && $attrs['ref'] == 'http://schemas.xmlsoap.org/soap/encoding/:arrayType'){
					if (isset($attrs['http://schemas.xmlsoap.org/wsdl/:arrayType'])) {
	                	$aname = $attrs['http://schemas.xmlsoap.org/wsdl/:arrayType'];
	                } else {
	                	$aname = '';
	                }
				} elseif(isset($attrs['ref'])){
					$aname = $attrs['ref'];
                    $this->attributes[$attrs['ref']] = $attrs;
				}

if($this->currentComplexType){	// This should *always* be
					$this->complexTypes[$this->currentComplexType]['attrs'][$aname] = $attrs;
				}
				// arrayType attribute
				if(isset($attrs['http://schemas.xmlsoap.org/wsdl/:arrayType']) || $this->getLocalPart($aname) == 'arrayType'){
					$this->complexTypes[$this->currentComplexType]['phpType'] = 'array';
                	$prefix = $this->getPrefix($aname);
					if(isset($attrs['http://schemas.xmlsoap.org/wsdl/:arrayType'])){
						$v = $attrs['http://schemas.xmlsoap.org/wsdl/:arrayType'];
					} else {
						$v = '';
					}
                    if(strpos($v,'[,]')){
                        $this->complexTypes[$this->currentComplexType]['multidimensional'] = true;
                    }
                    $v = substr($v,0,strpos($v,'[')); // clip the []
                    if(!strpos($v,':') && isset($this->typemap[$this->XMLSchemaVersion][$v])){
                        $v = $this->XMLSchemaVersion.':'.$v;
                    }
                    $this->complexTypes[$this->currentComplexType]['arrayType'] = $v;
				}
			break;
			case 'complexContent':	// (optional) content for a complexType
				$this->xdebug("do nothing for element $name");
			break;
			case 'complexType':
				array_push($this->complexTypeStack, $this->currentComplexType);
				if(isset($attrs['name'])){
					// TODO: what is the scope of named complexTypes that appear
					//       nested within other c complexTypes?
					$this->xdebug('processing named complexType '.$attrs['name']);
					//$this->currentElement = false;
					$this->currentComplexType = $attrs['name'];
					$this->complexTypes[$this->currentComplexType] = $attrs;
					$this->complexTypes[$this->currentComplexType]['typeClass'] = 'complexType';
					// This is for constructs like
					//           <complexType name="ListOfString" base="soap:Array">
					//                <sequence>
					//                    <element name="string" type="xsd:string"
					//                        minOccurs="0" maxOccurs="unbounded" />
					//                </sequence>
					//            </complexType>
					if(isset($attrs['base']) && preg_match('/:Array$/',$attrs['base'])){
						$this->xdebug('complexType is unusual array');
						$this->complexTypes[$this->currentComplexType]['phpType'] = 'array';
					} else {
						$this->complexTypes[$this->currentComplexType]['phpType'] = 'struct';
					}
				} else {
					$name = $this->CreateTypeName($this->currentElement);
					$this->xdebug('processing unnamed complexType for element ' . $this->currentElement . ' named ' . $name);
					$this->currentComplexType = $name;
					//$this->currentElement = false;
					$this->complexTypes[$this->currentComplexType] = $attrs;
					$this->complexTypes[$this->currentComplexType]['typeClass'] = 'complexType';
					// This is for constructs like
					//           <complexType name="ListOfString" base="soap:Array">
					//                <sequence>
					//                    <element name="string" type="xsd:string"
					//                        minOccurs="0" maxOccurs="unbounded" />
					//                </sequence>
					//            </complexType>
					if(isset($attrs['base']) && preg_match('/:Array$/',$attrs['base'])){
						$this->xdebug('complexType is unusual array');
						$this->complexTypes[$this->currentComplexType]['phpType'] = 'array';
					} else {
						$this->complexTypes[$this->currentComplexType]['phpType'] = 'struct';
					}
				}
				$this->complexTypes[$this->currentComplexType]['simpleContent'] = 'false';
			break;
			case 'element':
				array_push($this->elementStack, $this->currentElement);
				if (!isset($attrs['form'])) {
					if ($this->currentComplexType) {
						$attrs['form'] = $this->schemaInfo['elementFormDefault'];
					} else {
						// global
						$attrs['form'] = 'qualified';
					}
				}
				if(isset($attrs['type'])){
					$this->xdebug("processing typed element ".$attrs['name']." of type ".$attrs['type']);
					if (! $this->getPrefix($attrs['type'])) {
						if ($this->defaultNamespace[$pos]) {
							$attrs['type'] = $this->defaultNamespace[$pos] . ':' . $attrs['type'];
							$this->xdebug('used default namespace to make type ' . $attrs['type']);
						}
					}
					// This is for constructs like
					//           <complexType name="ListOfString" base="soap:Array">
					//                <sequence>
					//                    <element name="string" type="xsd:string"
					//                        minOccurs="0" maxOccurs="unbounded" />
					//                </sequence>
					//            </complexType>
					if ($this->currentComplexType && $this->complexTypes[$this->currentComplexType]['phpType'] == 'array') {
						$this->xdebug('arrayType for unusual array is ' . $attrs['type']);
						$this->complexTypes[$this->currentComplexType]['arrayType'] = $attrs['type'];
					}
					$this->currentElement = $attrs['name'];
					$ename = $attrs['name'];
				} elseif(isset($attrs['ref'])){
					$this->xdebug("processing element as ref to ".$attrs['ref']);
					$this->currentElement = "ref to ".$attrs['ref'];
					$ename = $this->getLocalPart($attrs['ref']);
				} else {
					$type = $this->CreateTypeName($this->currentComplexType . '_' . $attrs['name']);
					$this->xdebug("processing untyped element " . $attrs['name'] . ' type ' . $type);
					$this->currentElement = $attrs['name'];
					$attrs['type'] = $this->schemaTargetNamespace . ':' . $type;
					$ename = $attrs['name'];
				}
				if (isset($ename) && $this->currentComplexType) {
					$this->xdebug("add element $ename to complexType $this->currentComplexType");
					$this->complexTypes[$this->currentComplexType]['elements'][$ename] = $attrs;
				} elseif (!isset($attrs['ref'])) {
					$this->xdebug("add element $ename to elements array");
					$this->elements[ $attrs['name'] ] = $attrs;
					$this->elements[ $attrs['name'] ]['typeClass'] = 'element';
				}
			break;
			case 'enumeration':	//	restriction value list member
				$this->xdebug('enumeration ' . $attrs['value']);
				if ($this->currentSimpleType) {
					$this->simpleTypes[$this->currentSimpleType]['enumeration'][] = $attrs['value'];
				} elseif ($this->currentComplexType) {
					$this->complexTypes[$this->currentComplexType]['enumeration'][] = $attrs['value'];
				}
			break;
			case 'extension':	// simpleContent or complexContent type extension
				$this->xdebug('extension ' . $attrs['base']);
				if ($this->currentComplexType) {
					$ns = $this->getPrefix($attrs['base']);
					if ($ns == '') {
						$this->complexTypes[$this->currentComplexType]['extensionBase'] = $this->schemaTargetNamespace . ':' . $attrs['base'];
					} else {
						$this->complexTypes[$this->currentComplexType]['extensionBase'] = $attrs['base'];
					}
				} else {
					$this->xdebug('no current complexType to set extensionBase');
				}
			break;
			case 'import':
			    if (isset($attrs['schemaLocation'])) {
					$this->xdebug('import namespace ' . $attrs['namespace'] . ' from ' . $attrs['schemaLocation']);
                    $this->imports[$attrs['namespace']][] = array('location' => $attrs['schemaLocation'], 'loaded' => false);
				} else {
					$this->xdebug('import namespace ' . $attrs['namespace']);
                    $this->imports[$attrs['namespace']][] = array('location' => '', 'loaded' => true);
					if (! $this->getPrefixFromNamespace($attrs['namespace'])) {
						$this->namespaces['ns'.(count($this->namespaces)+1)] = $attrs['namespace'];
					}
				}
			break;
			case 'include':
			    if (isset($attrs['schemaLocation'])) {
					$this->xdebug('include into namespace ' . $this->schemaTargetNamespace . ' from ' . $attrs['schemaLocation']);
                    $this->imports[$this->schemaTargetNamespace][] = array('location' => $attrs['schemaLocation'], 'loaded' => false);
				} else {
					$this->xdebug('ignoring invalid XML Schema construct: include without schemaLocation attribute');
				}
			break;
			case 'list':	// simpleType value list
				$this->xdebug("do nothing for element $name");
			break;
			case 'restriction':	// simpleType, simpleContent or complexContent value restriction
				$this->xdebug('restriction ' . $attrs['base']);
				if($this->currentSimpleType){
					$this->simpleTypes[$this->currentSimpleType]['type'] = $attrs['base'];
				} elseif($this->currentComplexType){
					$this->complexTypes[$this->currentComplexType]['restrictionBase'] = $attrs['base'];
					if(strstr($attrs['base'],':') == ':Array'){
						$this->complexTypes[$this->currentComplexType]['phpType'] = 'array';
					}
				}
			break;
			case 'schema':
				$this->schemaInfo = $attrs;
				$this->schemaInfo['schemaVersion'] = $this->getNamespaceFromPrefix($prefix);
				if (isset($attrs['targetNamespace'])) {
					$this->schemaTargetNamespace = $attrs['targetNamespace'];
				}
				if (!isset($attrs['elementFormDefault'])) {
					$this->schemaInfo['elementFormDefault'] = 'unqualified';
				}
				if (!isset($attrs['attributeFormDefault'])) {
					$this->schemaInfo['attributeFormDefault'] = 'unqualified';
				}
			break;
			case 'simpleContent':	// (optional) content for a complexType
				if ($this->currentComplexType) {	// This should *always* be
					$this->complexTypes[$this->currentComplexType]['simpleContent'] = 'true';
				} else {
					$this->xdebug("do nothing for element $name because there is no current complexType");
				}
			break;
			case 'simpleType':
				array_push($this->simpleTypeStack, $this->currentSimpleType);
				if(isset($attrs['name'])){
					$this->xdebug("processing simpleType for name " . $attrs['name']);
					$this->currentSimpleType = $attrs['name'];
					$this->simpleTypes[ $attrs['name'] ] = $attrs;
					$this->simpleTypes[ $attrs['name'] ]['typeClass'] = 'simpleType';
					$this->simpleTypes[ $attrs['name'] ]['phpType'] = 'scalar';
				} else {
					$name = $this->CreateTypeName($this->currentComplexType . '_' . $this->currentElement);
					$this->xdebug('processing unnamed simpleType for element ' . $this->currentElement . ' named ' . $name);
					$this->currentSimpleType = $name;
					//$this->currentElement = false;
					$this->simpleTypes[$this->currentSimpleType] = $attrs;
					$this->simpleTypes[$this->currentSimpleType]['phpType'] = 'scalar';
				}
			break;
			case 'union':	// simpleType type list
				$this->xdebug("do nothing for element $name");
			break;
			default:
				$this->xdebug("do not have any logic to process element $name");
		}
	}

/**
	* end-element handler
	*
	* @param    string $parser XML parser object
	* @param    string $name element name
	* @access   private
	*/
	function schemaEndElement($parser, $name) {
		// bring depth down a notch
		$this->depth--;
		// position of current element is equal to the last value left in depth_array for my depth
		if(isset($this->depth_array[$this->depth])){
        	$pos = $this->depth_array[$this->depth];
        }
		// get element prefix
		if ($prefix = $this->getPrefix($name)){
			// get unqualified name
			$name = $this->getLocalPart($name);
		} else {
        	$prefix = '';
        }
		// move on...
		if($name == 'complexType'){
			$this->xdebug('done processing complexType ' . ($this->currentComplexType ? $this->currentComplexType : '(unknown)'));
			$this->xdebug($this->varDump($this->complexTypes[$this->currentComplexType]));
			$this->currentComplexType = array_pop($this->complexTypeStack);
			//$this->currentElement = false;
		}
		if($name == 'element'){
			$this->xdebug('done processing element ' . ($this->currentElement ? $this->currentElement : '(unknown)'));
			$this->currentElement = array_pop($this->elementStack);
		}
		if($name == 'simpleType'){
			$this->xdebug('done processing simpleType ' . ($this->currentSimpleType ? $this->currentSimpleType : '(unknown)'));
			$this->xdebug($this->varDump($this->simpleTypes[$this->currentSimpleType]));
			$this->currentSimpleType = array_pop($this->simpleTypeStack);
		}
	}

/**
	* element content handler
	*
	* @param    string $parser XML parser object
	* @param    string $data element content
	* @access   private
	*/
	function schemaCharacterData($parser, $data){
		$pos = $this->depth_array[$this->depth - 1];
		$this->message[$pos]['cdata'] .= $data;
	}

/**
	* serialize the schema
	*
	* @access   public
	*/
	function serializeSchema(){

$schemaPrefix = $this->getPrefixFromNamespace($this->XMLSchemaVersion);
		$xml = '';
		// imports
		if (sizeof($this->imports) > 0) {
			foreach($this->imports as $ns => $list) {
				foreach ($list as $ii) {
					if ($ii['location'] != '') {
						$xml .= " <$schemaPrefix:import location=\"" . $ii['location'] . '" namespace="' . $ns . "\" />\n";
					} else {
						$xml .= " <$schemaPrefix:import namespace=\"" . $ns . "\" />\n";
					}
				}
			}
		}
		// complex types
		foreach($this->complexTypes as $typeName => $attrs){
			$contentStr = '';
			// serialize child elements
			if(isset($attrs['elements']) && (count($attrs['elements']) > 0)){
				foreach($attrs['elements'] as $element => $eParts){
					if(isset($eParts['ref'])){
						$contentStr .= "   <$schemaPrefix:element ref=\"$element\"/>\n";
					} else {
						$contentStr .= "   <$schemaPrefix:element name=\"$element\" type=\"" . $this->contractQName($eParts['type']) . "\"";
						foreach ($eParts as $aName => $aValue) {
							// handle, e.g., abstract, default, form, minOccurs, maxOccurs, nillable
							if ($aName != 'name' && $aName != 'type') {
								$contentStr .= " $aName=\"$aValue\"";
							}
						}
						$contentStr .= "/>\n";
					}
				}
				// compositor wraps elements
				if (isset($attrs['compositor']) && ($attrs['compositor'] != '')) {
					$contentStr = "  <$schemaPrefix:$attrs[compositor]>\n".$contentStr."  </$schemaPrefix:$attrs[compositor]>\n";
				}
			}
			// attributes
			if(isset($attrs['attrs']) && (count($attrs['attrs']) >= 1)){
				foreach($attrs['attrs'] as $attr => $aParts){
					$contentStr .= "    <$schemaPrefix:attribute";
					foreach ($aParts as $a => $v) {
						if ($a == 'ref' || $a == 'type') {
							$contentStr .= " $a=\"".$this->contractQName($v).'"';
						} elseif ($a == 'http://schemas.xmlsoap.org/wsdl/:arrayType') {
							$this->usedNamespaces['wsdl'] = $this->namespaces['wsdl'];
							$contentStr .= ' wsdl:arrayType="'.$this->contractQName($v).'"';
						} else {
							$contentStr .= " $a=\"$v\"";
						}
					}
					$contentStr .= "/>\n";
				}
			}
			// if restriction
			if (isset($attrs['restrictionBase']) && $attrs['restrictionBase'] != ''){
				$contentStr = "   <$schemaPrefix:restriction base=\"".$this->contractQName($attrs['restrictionBase'])."\">\n".$contentStr."   </$schemaPrefix:restriction>\n";
				// complex or simple content
				if ((isset($attrs['elements']) && count($attrs['elements']) > 0) || (isset($attrs['attrs']) && count($attrs['attrs']) > 0)){
					$contentStr = "  <$schemaPrefix:complexContent>\n".$contentStr."  </$schemaPrefix:complexContent>\n";
				}
			}
			// finalize complex type
			if($contentStr != ''){
				$contentStr = " <$schemaPrefix:complexType name=\"$typeName\">\n".$contentStr." </$schemaPrefix:complexType>\n";
			} else {
				$contentStr = " <$schemaPrefix:complexType name=\"$typeName\"/>\n";
			}
			$xml .= $contentStr;
		}
		// simple types
		if(isset($this->simpleTypes) && count($this->simpleTypes) > 0){
			foreach($this->simpleTypes as $typeName => $eParts){
				$xml .= " <$schemaPrefix:simpleType name=\"$typeName\">\n  <$schemaPrefix:restriction base=\"".$this->contractQName($eParts['type'])."\">\n";
				if (isset($eParts['enumeration'])) {
					foreach ($eParts['enumeration'] as $e) {
						$xml .= "  <$schemaPrefix:enumeration value=\"$e\"/>\n";
					}
				}
				$xml .= "  </$schemaPrefix:restriction>\n </$schemaPrefix:simpleType>";
			}
		}
		// elements
		if(isset($this->elements) && count($this->elements) > 0){
			foreach($this->elements as $element => $eParts){
				$xml .= " <$schemaPrefix:element name=\"$element\" type=\"".$this->contractQName($eParts['type'])."\"/>\n";
			}
		}
		// attributes
		if(isset($this->attributes) && count($this->attributes) > 0){
			foreach($this->attributes as $attr => $aParts){
				$xml .= " <$schemaPrefix:attribute name=\"$attr\" type=\"".$this->contractQName($aParts['type'])."\"\n/>";
			}
		}
		// finish 'er up
		$attr = '';
		foreach ($this->schemaInfo as $k => $v) {
			if ($k == 'elementFormDefault' || $k == 'attributeFormDefault') {
				$attr .= " $k=\"$v\"";
			}
		}
		$el = "<$schemaPrefix:schema$attr targetNamespace=\"$this->schemaTargetNamespace\"\n";
		foreach (array_diff($this->usedNamespaces, $this->enclosingNamespaces) as $nsp => $ns) {
			$el .= " xmlns:$nsp=\"$ns\"";
		}
		$xml = $el . ">\n".$xml."</$schemaPrefix:schema>\n";
		return $xml;
	}

/**
	* adds debug data to the clas level debug string
	*
	* @param    string $string debug data
	* @access   private
	*/
	function xdebug($string){
		$this->debug('<' . $this->schemaTargetNamespace . '> '.$string);
	}

/**
    * get the PHP type of a user defined type in the schema
    * PHP type is kind of a misnomer since it actually returns 'struct' for assoc. arrays
    * returns false if no type exists, or not w/ the given namespace
    * else returns a string that is either a native php type, or 'struct'
    *
    * @param string $type name of defined type
    * @param string $ns namespace of type
    * @return mixed
    * @access public
    * @deprecated
    */
	function getPHPType($type,$ns){
		if(isset($this->typemap[$ns][$type])){
			//print "found type '$type' and ns $ns in typemap<br>";
			return $this->typemap[$ns][$type];
		} elseif(isset($this->complexTypes[$type])){
			//print "getting type '$type' and ns $ns from complexTypes array<br>";
			return $this->complexTypes[$type]['phpType'];
		}
		return false;
	}

/**
    * returns an associative array of information about a given type
    * returns false if no type exists by the given name
    *
	*	For a complexType typeDef = array(
	*	'restrictionBase' => '',
	*	'phpType' => '',
	*	'compositor' => '(sequence|all)',
	*	'elements' => array(), // refs to elements array
	*	'attrs' => array() // refs to attributes array
	*	... and so on (see addComplexType)
	*	)
	*
	*   For simpleType or element, the array has different keys.
    *
    * @param string $type
    * @return mixed
    * @access public
    * @see addComplexType
    * @see addSimpleType
    * @see addElement
    */
	function getTypeDef($type){
		//$this->debug("in getTypeDef for type $type");
		if (substr($type, -1) == '^') {
			$is_element = 1;
			$type = substr($type, 0, -1);
		} else {
			$is_element = 0;
		}

if((! $is_element) && isset($this->complexTypes[$type])){
			$this->xdebug("in getTypeDef, found complexType $type");
			return $this->complexTypes[$type];
		} elseif((! $is_element) && isset($this->simpleTypes[$type])){
			$this->xdebug("in getTypeDef, found simpleType $type");
			if (!isset($this->simpleTypes[$type]['phpType'])) {
				// get info for type to tack onto the simple type
				// TODO: can this ever really apply (i.e. what is a simpleType really?)
				$uqType = substr($this->simpleTypes[$type]['type'], strrpos($this->simpleTypes[$type]['type'], ':') + 1);
				$ns = substr($this->simpleTypes[$type]['type'], 0, strrpos($this->simpleTypes[$type]['type'], ':'));
				$etype = $this->getTypeDef($uqType);
				if ($etype) {
					$this->xdebug("in getTypeDef, found type for simpleType $type:");
					$this->xdebug($this->varDump($etype));
					if (isset($etype['phpType'])) {
						$this->simpleTypes[$type]['phpType'] = $etype['phpType'];
					}
					if (isset($etype['elements'])) {
						$this->simpleTypes[$type]['elements'] = $etype['elements'];
					}
				}
			}
			return $this->simpleTypes[$type];
		} elseif(isset($this->elements[$type])){
			$this->xdebug("in getTypeDef, found element $type");
			if (!isset($this->elements[$type]['phpType'])) {
				// get info for type to tack onto the element
				$uqType = substr($this->elements[$type]['type'], strrpos($this->elements[$type]['type'], ':') + 1);
				$ns = substr($this->elements[$type]['type'], 0, strrpos($this->elements[$type]['type'], ':'));
				$etype = $this->getTypeDef($uqType);
				if ($etype) {
					$this->xdebug("in getTypeDef, found type for element $type:");
					$this->xdebug($this->varDump($etype));
					if (isset($etype['phpType'])) {
						$this->elements[$type]['phpType'] = $etype['phpType'];
					}
					if (isset($etype['elements'])) {
						$this->elements[$type]['elements'] = $etype['elements'];
					}
					if (isset($etype['extensionBase'])) {
						$this->elements[$type]['extensionBase'] = $etype['extensionBase'];
					}
				} elseif ($ns == 'http://www.w3.org/2001/XMLSchema') {
					$this->xdebug("in getTypeDef, element $type is an XSD type");
					$this->elements[$type]['phpType'] = 'scalar';
				}
			}
			return $this->elements[$type];
		} elseif(isset($this->attributes[$type])){
			$this->xdebug("in getTypeDef, found attribute $type");
			return $this->attributes[$type];
		} elseif (preg_match('/_ContainedType$/', $type)) {
			$this->xdebug("in getTypeDef, have an untyped element $type");
			$typeDef['typeClass'] = 'simpleType';
			$typeDef['phpType'] = 'scalar';
			$typeDef['type'] = 'http://www.w3.org/2001/XMLSchema:string';
			return $typeDef;
		}
		$this->xdebug("in getTypeDef, did not find $type");
		return false;
	}

/**
    * returns a sample serialization of a given type, or false if no type by the given name
    *
    * @param string $type name of type
    * @return mixed
    * @access public
    * @deprecated
    */
    function serializeTypeDef($type){
    	//print "in sTD() for type $type<br>";
	if($typeDef = $this->getTypeDef($type)){
		$str .= '<'.$type;
	    if(is_array($typeDef['attrs'])){
		foreach($typeDef['attrs'] as $attName => $data){
		    $str .= " $attName=\"{type = ".$data['type']."}\"";
		}
	    }
	    $str .= " xmlns=\"".$this->schema['targetNamespace']."\"";
	    if(count($typeDef['elements']) > 0){
		$str .= ">";
		foreach($typeDef['elements'] as $element => $eData){
		    $str .= $this->serializeTypeDef($element);
		}
		$str .= "</$type>";
	    } elseif($typeDef['typeClass'] == 'element') {
		$str .= "></$type>";
	    } else {
		$str .= "/>";
	    }
			return $str;
	}
    	return false;
    }

/**
    * returns HTML form elements that allow a user
    * to enter values for creating an instance of the given type.
    *
    * @param string $name name for type instance
    * @param string $type name of type
    * @return string
    * @access public
    * @deprecated
	*/
	function typeToForm($name,$type){
		// get typedef
		if($typeDef = $this->getTypeDef($type)){
			// if struct
			if($typeDef['phpType'] == 'struct'){
				$buffer .= '<table>';
				foreach($typeDef['elements'] as $child => $childDef){
					$buffer .= "
					<tr><td align='right'>$childDef[name] (type: ".$this->getLocalPart($childDef['type'])."):</td>
					<td><input type='text' name='parameters[".$name."][$childDef[name]]'></td></tr>";
				}
				$buffer .= '</table>';
			// if array
			} elseif($typeDef['phpType'] == 'array'){
				$buffer .= '<table>';
				for($i=0;$i < 3; $i++){
					$buffer .= "
					<tr><td align='right'>array item (type: $typeDef[arrayType]):</td>
					<td><input type='text' name='parameters[".$name."][]'></td></tr>";
				}
				$buffer .= '</table>';
			// if scalar
			} else {
				$buffer .= "<input type='text' name='parameters[$name]'>";
			}
		} else {
			$buffer .= "<input type='text' name='parameters[$name]'>";
		}
		return $buffer;
	}

/**
	* adds a complex type to the schema
	*
	* example: array
	*
	* addType(
	* 	'ArrayOfstring',
	* 	'complexType',
	* 	'array',
	* 	'',
	* 	'SOAP-ENC:Array',
	* 	array('ref'=>'SOAP-ENC:arrayType','wsdl:arrayType'=>'string[]'),
	* 	'xsd:string'
	* );
	*
	* example: PHP associative array ( SOAP Struct )
	*
	* addType(
	* 	'SOAPStruct',
	* 	'complexType',
	* 	'struct',
	* 	'all',
	* 	array('myVar'=> array('name'=>'myVar','type'=>'string')
	* );
	*
	* @param name
	* @param typeClass (complexType|simpleType|attribute)
	* @param phpType: currently supported are array and struct (php assoc array)
	* @param compositor (all|sequence|choice)
	* @param restrictionBase namespace:name (http://schemas.xmlsoap.org/soap/encoding/:Array)
	* @param elements = array ( name = array(name=>'',type=>'') )
	* @param attrs = array(
	* 	array(
	*		'ref' => "http://schemas.xmlsoap.org/soap/encoding/:arrayType",
	*		"http://schemas.xmlsoap.org/wsdl/:arrayType" => "string[]"
	* 	)
	* )
	* @param arrayType: namespace:name (http://www.w3.org/2001/XMLSchema:string)
	* @access public
	* @see getTypeDef
	*/
	function addComplexType($name,$typeClass='complexType',$phpType='array',$compositor='',$restrictionBase='',$elements=array(),$attrs=array(),$arrayType=''){
		$this->complexTypes[$name] = array(
	    'name'		=> $name,
	    'typeClass'	=> $typeClass,
	    'phpType'	=> $phpType,
		'compositor'=> $compositor,
	    'restrictionBase' => $restrictionBase,
		'elements'	=> $elements,
	    'attrs'		=> $attrs,
	    'arrayType'	=> $arrayType
		);

$this->xdebug("addComplexType $name:");
		$this->appendDebug($this->varDump($this->complexTypes[$name]));
	}

/**
	* adds a simple type to the schema
	*
	* @param string $name
	* @param string $restrictionBase namespace:name (http://schemas.xmlsoap.org/soap/encoding/:Array)
	* @param string $typeClass (should always be simpleType)
	* @param string $phpType (should always be scalar)
	* @param array $enumeration array of values
	* @access public
	* @see nusoap_xmlschema
	* @see getTypeDef
	*/
	function addSimpleType($name, $restrictionBase='', $typeClass='simpleType', $phpType='scalar', $enumeration=array()) {
		$this->simpleTypes[$name] = array(
	    'name'			=> $name,
	    'typeClass'		=> $typeClass,
	    'phpType'		=> $phpType,
	    'type'			=> $restrictionBase,
	    'enumeration'	=> $enumeration
		);

$this->xdebug("addSimpleType $name:");
		$this->appendDebug($this->varDump($this->simpleTypes[$name]));
	}

/**
	* adds an element to the schema
	*
	* @param array $attrs attributes that must include name and type
	* @see nusoap_xmlschema
	* @access public
	*/
	function addElement($attrs) {
		if (! $this->getPrefix($attrs['type'])) {
			$attrs['type'] = $this->schemaTargetNamespace . ':' . $attrs['type'];
		}
		$this->elements[ $attrs['name'] ] = $attrs;
		$this->elements[ $attrs['name'] ]['typeClass'] = 'element';

$this->xdebug("addElement " . $attrs['name']);
		$this->appendDebug($this->varDump($this->elements[ $attrs['name'] ]));
	}
}

/**
 * Backward compatibility
 */
class XMLSchema extends nusoap_xmlschema {
}

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