class.ilAssQuestionSkillAssignmentXmlParser.php

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<?php
/* Copyright (c) 1998-2013 ILIAS open source, Extended GPL, see docs/LICENSE */

require_once 'Services/Xml/classes/class.ilSaxParser.php';
require_once 'Modules/TestQuestionPool/classes/class.ilAssQuestionSkillAssignment.php';
require_once 'Modules/TestQuestionPool/classes/questions/class.ilAssQuestionSkillAssignmentImportList.php';

class ilAssQuestionSkillAssignmentXmlParser extends ilSaxParser
{
        protected $parsingActive;
        
        protected $characterDataBuffer;
        
        protected $curQuestionId;
        
        protected $curAssignment;
        
        protected $curExpression;
        
        protected $assignmentList;
        
        public function __construct($xmlFile)
        {
                $this->parsingActive = false;
                $this->characterDataBuffer = null;
                $this->curQuestionId = null;
                $this->curAssignment = null;
                $this->curExpression = null;
                $this->assignmentList = new ilAssQuestionSkillAssignmentImportList();
                return parent::__construct($xmlFile);
        }
        
        public function isParsingActive()
        {
                return $this->parsingActive;
        }
        
        public function setParsingActive($parsingActive)
        {
                $this->parsingActive = $parsingActive;
        }
        
        protected function getCharacterDataBuffer()
        {
                return $this->characterDataBuffer;
        }
        
        protected function resetCharacterDataBuffer()
        {
                $this->characterDataBuffer = '';
        }
        
        protected function appendToCharacterDataBuffer($characterData)
        {
                $this->characterDataBuffer .= $characterData;
        }
        
        public function getCurQuestionId()
        {
                return $this->curQuestionId;
        }
        
        public function setCurQuestionId($curQuestionId)
        {
                $this->curQuestionId = $curQuestionId;
        }
        
        public function getCurAssignment()
        {
                return $this->curAssignment;
        }
        
        public function setCurAssignment($curAssignment)
        {
                $this->curAssignment = $curAssignment;
        }
        
        public function getAssignmentList()
        {
                return $this->assignmentList;
        }
        
        public function getCurExpression()
        {
                return $this->curExpression;
        }
        
        public function setCurExpression($curExpression)
        {
                $this->curExpression = $curExpression;
        }
        
        public function setHandlers($xmlParser)
        {
                xml_set_object($xmlParser,$this);
                xml_set_element_handler($xmlParser,'handlerBeginTag','handlerEndTag');
                xml_set_character_data_handler($xmlParser,'handlerCharacterData');
        }
        
        public function handlerBeginTag($xmlParser, $tagName, $tagAttributes)
        {
                if( $tagName != 'QuestionSkillAssignments' && !$this->isParsingActive() )
                {
                        return;
                }
                
                switch($tagName)
                {
                        case 'QuestionSkillAssignments':
                                $this->setParsingActive(true);
                                break;
                        
                        case 'TriggerQuestion':
                                $this->setCurQuestionId((int)$tagAttributes['Id']);
                                break;
                        
                        case 'TriggeredSkill':
                                $assignment = new ilAssQuestionSkillAssignmentImport();
                                $assignment->setImportQuestionId($this->getCurQuestionId());
                                $assignment->setImportSkillBaseId((int)$tagAttributes['BaseId']);
                                $assignment->setImportSkillTrefId((int)$tagAttributes['TrefId']);
                                $assignment->initImportSolutionComparisonExpressionList();
                                $this->setCurAssignment($assignment);
                                break;
                        
                        case 'OriginalSkillTitle':
                                $this->resetCharacterDataBuffer();
                                break;
                        
                        case 'OriginalSkillPath':
                                $this->resetCharacterDataBuffer();
                                break;
                        
                        case 'EvalByQuestionResult':
                                $this->getCurAssignment()->setEvalMode(ilAssQuestionSkillAssignment::EVAL_MODE_BY_QUESTION_RESULT);
                                $this->getCurAssignment()->setSkillPoints((int)$tagAttributes['Points']);
                                break;
                        
                        case 'EvalByQuestionSolution':
                                $this->getCurAssignment()->setEvalMode(ilAssQuestionSkillAssignment::EVAL_MODE_BY_QUESTION_SOLUTION);
                                break;
                        
                        case 'SolutionComparisonExpression':
                                $expression = new ilAssQuestionSolutionComparisonExpressionImport();
                                $expression->setPoints((int)$tagAttributes['Points']);
                                $expression->setOrderIndex((int)$tagAttributes['Index']);
                                $this->setCurExpression($expression);
                                $this->resetCharacterDataBuffer();
                                break;
                }
        }
        
        public function handlerEndTag($xmlParser, $tagName)
        {
                if( !$this->isParsingActive() )
                {
                        return;
                }
                
                switch($tagName)
                {
                        case 'QuestionSkillAssignments':
                                $this->setParsingActive(false);
                                break;
                        
                        case 'TriggerQuestion':
                                $this->setCurQuestionId(null);
                                break;
                        
                        case 'TriggeredSkill':
                                $this->getAssignmentList()->addAssignment($this->getCurAssignment());
                                $this->setCurAssignment(null);
                                break;
                        
                        case 'OriginalSkillTitle':
                                $this->getCurAssignment()->setImportSkillTitle($this->getCharacterDataBuffer());
                                $this->resetCharacterDataBuffer();
                                break;
                        
                        case 'OriginalSkillPath':
                                $this->getCurAssignment()->setImportSkillPath($this->getCharacterDataBuffer());
                                $this->resetCharacterDataBuffer();
                                break;
                        
                        case 'EvalByQuestionResult':
                                break;
                        
                        case 'EvalByQuestionSolution':
                                break;
                        
                        case 'SolutionComparisonExpression':
                                $this->getCurExpression()->setExpression($this->getCharacterDataBuffer());
                                $this->getCurAssignment()->getImportSolutionComparisonExpressionList()->addExpression($this->getCurExpression());
                                $this->setCurExpression(null);
                                $this->resetCharacterDataBuffer();
                                break;
                }
        }
        
        public function handlerCharacterData($xmlParser, $charData)
        {
                if( !$this->isParsingActive() )
                {
                        return;
                }
                
                if( $charData != "\n" )
                {
                        // Replace multiple tabs with one space
                        $charData = preg_replace("/\t+/"," ",$charData);
                        
                        $this->appendToCharacterDataBuffer($charData);
                }
        }
}