PHP: used to write 1 XML Node with the XMLWriter, based on where an XMLReader is

function_writeOneNode.php

/**
 * writes one node based on nodetype
 * 
 * _implementation_
 * In an object which has the properties 'xmlReader' and 'xmlWriter' which are instances of the XMLReader/XMLWriter class respectively.
 * 
 * can be used after each XMLReader::read()
 * there are 3 groups
 * - handled types (they get written)
 * - ignored types (they get purposely ignored)
 * - unhandled types (they get not written or ignored because I don't know what they are)
 * 
 * @param void takes input from properties
 * @return boolean true on sucess, false on failure
 */
function writeOneNode() {
	switch($this->xmlReader->nodeType) {
		//handled types
		case XMLReader::NONE:
			break;
		case XMLReader::ELEMENT:
			if(!$this->xmlWriter->startElement($this->xmlReader->name)) {trigger_error('Cold not start Element.',E_USER_WARNING);return false;};
			if($this->xmlReader->hasAttributes) { //handle attributes
				$attCount = $this->xmlReader->attributeCount;
				for($i = 0; $i < $attCount; $i++) {
					if(!$this->xmlReader->moveToNextAttribute()){trigger_error('Could not move to next Attribute.',E_USER_WARNING);return false;};
					if(!$this->xmlWriter->writeAttribute($this->xmlReader->name, $this->xmlReader->value)) {trigger_error('Could not write Attribute ('.$this->xmlReader->name.'=>'.$this->xmlReader->value.').',E_USER_WARNING);return false;}
				}
				if(!$this->xmlReader->moveToElement()) {trigger_error('Could not move back to Element',E_USER_WARNING);return false;}
			}
			break;
		case XMLReader::ATTRIBUTE:
			if(!$this->xmlWriter->writeAttribute($this->xmlReader->name, $this->xmlReader->getAttribute($this->xmlReader->name))) {trigger_error('Could not Write Attribute ('.$this->xmlReader->name.'=>'.$this->xmlReader->getAttribute($this->xmlReader->name).').',E_USER_WARNING);return false;}
			break;
		case XMLReader::TEXT:
		case XMLReader::SIGNIFICANT_WHITESPACE:
			if(!$this->xmlWriter->text($this->xmlReader->value)) {trigger_error('Could not write text ('.$this->xmlReader->value.').',E_USER_WARNING);return false;}
			break;
		case XMLReader::CDATA:
			if(!$this->xmlWriter->writeCData($this->xmlReader->value)) {trigger_error('Could not write CDATA ('.$this->xmlReader->value.').',E_USER_WARNING);return false;}
			break;
		case XMLReader::END_ELEMENT:
			if(!$this->xmlWriter->fullEndElement()) {trigger_error('Could not write End Element.',E_USER_WARNING);return false;} //important that it is full element: otherwise it will change up the name types -> wrong levels -> everything is broken
			break;
		//igored types
		case XMLReader::ATTRIBUTE: //will never be reached through XMLReader::read()
			break;
		//unhandled types
		case XMLReader::ENTITY_REF:
		case XMLReader::ENTITY:
		case XMLReader::PI:
		case XMLReader::COMMENT:
		case XMLReader::DOC:
		case XMLReader::DOC_TYPE:
		case XMLReader::DOC_FRAGMENT:
		case XMLReader::NOTATION:
		case XMLReader::WHITESPACE:
		case XMLReader::END_ENTITY:
		case XMLReader::XML_DECLARATION:
		case XMLReader::LOADDTD:
		case XMLReader::DEFAULTATTRS:
		case XMLReader::VALIDATE:
		case XMLReader::SUBST_ENTITIES:
			trigger_error('Came around unhandled Node Type. Will continue execution.');
			break;
		default: //unkown type
			trigger_error('Came around unkown Node Type ('.(string)$this->xmlReader->nodeType.')', E_USER_WARNING);
			return false;
	}
	return true;
}