<?php
/*
 *  OPEN POWER LIBS <http://www.invenzzia.org>
 *
 * This file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE. It is also available through
 * WWW at this URL: <http://www.invenzzia.org/license/new-bsd>
 *
 * Copyright (c) Invenzzia Group <http://www.invenzzia.org>
 * and other contributors. See website for details.
 *
 */

	class Opt_Instruction_Capture extends Opt_Compiler_Processor
	{
		protected $_name = 'capture';
		
		public function configure()
		{
			$this->_addInstructions('opt:capture');
			$this->_addAttributes('opt:capture');
		} // end configure();
	
		public function processNode(Opt_Xml_Node $node)
		{
			$params = array(
				'as' => array(0 => self::REQUIRED, self::ID)
			);
			$this->_extractAttributes($node, $params);
			$node->addAfter(Opt_Xml_Buffer::TAG_BEFORE, 'ob_start(); ');
			$node->addBefore(Opt_Xml_Buffer::TAG_AFTER, 'self::$_capture[\''.$params['as'].'\'] = ob_get_clean();');
			$this->_process($node);
		} // end processNode();
		
		public function processAttribute(Opt_Xml_Node $node, Opt_Xml_Attribute $attr)
		{
			if($this->_compiler->isIdentifier($attr->getValue()))
			{
				$node->addAfter(Opt_Xml_Buffer::TAG_BEFORE, 'ob_start(); ');
				$node->addBefore(Opt_Xml_Buffer::TAG_AFTER, 'self::$_capture[\''.$attr->getValue().'\'] = ob_get_clean();');
				$this->_process($node);
			}
			else
			{
				throw new Opt_InvalidAttributeType_Exception('opt:capture', 'identifier');
			}
		} // end processAttribute();
		
		public function processSystemVar($opt)
		{
			return 'self::$_capture[\''.$opt[2].'\']';
		} // end processSystemVar();
	} // end Opt_Instruction_Capture;