📄 class.xmlschema.php
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<?php
/**
* 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 1.49 2007/11/06 14:17:53 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 $namespaces namespaces defined in enclosing XML
* @access public
*/
function nusoap_xmlschema($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 => $v){
// if ns declarations, add to class level array of valid namespaces
if(ereg("^xmlns",$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'])) {
$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'] = $v;
}
break;
case 'complexContent': // (optional) content for a complexType
break;
case 'complexType':
array_push($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>
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