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efrain |
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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Blackboard V5 and V6 question importer.
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*
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* @package qformat_blackboard_six
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* @copyright 2005 Michael Penney
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die();
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require_once($CFG->libdir . '/xmlize.php');
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/**
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* Blackboard 6.0 question importer.
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*
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* @copyright 2005 Michael Penney
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class qformat_blackboard_six_qti extends qformat_blackboard_six_base {
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/**
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* Parse the xml document into an array of questions
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* this *could* burn memory - but it won't happen that much
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* so fingers crossed!
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* @param array $text array of lines from the input file.
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* @return array (of objects) questions objects.
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*/
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protected function readquestions($text) {
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// This converts xml to big nasty data structure,
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// the 0 means keep white space as it is.
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try {
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$xml = xmlize($text, 0, 'UTF-8', true);
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} catch (xml_format_exception $e) {
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$this->error($e->getMessage(), '');
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return false;
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}
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$questions = array();
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// Treat the assessment title as a category title.
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$this->process_category($xml, $questions);
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// First step : we are only interested in the <item> tags.
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$rawquestions = $this->getpath($xml,
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array('questestinterop', '#', 'assessment', 0, '#', 'section', 0, '#', 'item'),
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array(), false);
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// Each <item> tag contains data related to a single question.
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foreach ($rawquestions as $quest) {
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// Second step : parse each question data into the intermediate
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// rawquestion structure array.
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// Warning : rawquestions are not Moodle questions.
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$question = $this->create_raw_question($quest);
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// Third step : convert a rawquestion into a Moodle question.
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switch($question->qtype) {
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case "Matching":
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$this->process_matching($question, $questions);
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break;
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case "Multiple Choice":
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$this->process_mc($question, $questions);
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break;
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case "Essay":
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$this->process_essay($question, $questions);
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break;
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case "Multiple Answer":
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$this->process_ma($question, $questions);
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break;
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case "True/False":
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$this->process_tf($question, $questions);
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break;
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case 'Fill in the Blank':
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$this->process_fblank($question, $questions);
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break;
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case 'Short Response':
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$this->process_essay($question, $questions);
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break;
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default:
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$this->error(get_string('unknownorunhandledtype', 'question', $question->qtype));
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break;
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}
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}
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return $questions;
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}
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/**
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* Creates a cleaner object to deal with for processing into Moodle.
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* The object returned is NOT a moodle question object.
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* @param array $quest XML <item> question data
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* @return object rawquestion
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*/
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public function create_raw_question($quest) {
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$rawquestion = new stdClass();
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$rawquestion->qtype = $this->getpath($quest,
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array('#', 'itemmetadata', 0, '#', 'bbmd_questiontype', 0, '#'),
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'', true);
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$rawquestion->id = $this->getpath($quest,
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array('#', 'itemmetadata', 0, '#', 'bbmd_asi_object_id', 0, '#'),
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'', true);
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$presentation = new stdClass();
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$presentation->blocks = $this->getpath($quest,
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array('#', 'presentation', 0, '#', 'flow', 0, '#', 'flow'),
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array(), false);
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foreach ($presentation->blocks as $pblock) {
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$block = new stdClass();
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$block->type = $this->getpath($pblock,
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array('@', 'class'),
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'', true);
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switch($block->type) {
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case 'QUESTION_BLOCK':
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$subblocks = $this->getpath($pblock,
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array('#', 'flow'),
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array(), false);
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foreach ($subblocks as $sblock) {
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$this->process_block($sblock, $block);
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}
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break;
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case 'RESPONSE_BLOCK':
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$choices = null;
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switch($rawquestion->qtype) {
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case 'Matching':
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$bbsubquestions = $this->getpath($pblock,
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array('#', 'flow'),
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array(), false);
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foreach ($bbsubquestions as $bbsubquestion) {
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$subquestion = new stdClass();
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$subquestion->ident = $this->getpath($bbsubquestion,
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array('#', 'response_lid', 0, '@', 'ident'),
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'', true);
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$this->process_block($this->getpath($bbsubquestion,
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array('#', 'flow', 0),
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false, false), $subquestion);
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$bbchoices = $this->getpath($bbsubquestion,
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array('#', 'response_lid', 0, '#', 'render_choice', 0,
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'#', 'flow_label', 0, '#', 'response_label'),
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array(), false);
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$choices = array();
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$this->process_choices($bbchoices, $choices);
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$subquestion->choices = $choices;
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if (!isset($block->subquestions)) {
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$block->subquestions = array();
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}
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$block->subquestions[] = $subquestion;
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}
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break;
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case 'Multiple Answer':
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$bbchoices = $this->getpath($pblock,
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array('#', 'response_lid', 0, '#', 'render_choice', 0, '#', 'flow_label'),
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array(), false);
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$choices = array();
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$this->process_choices($bbchoices, $choices);
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$block->choices = $choices;
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break;
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case 'Essay':
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// Doesn't apply since the user responds with text input.
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break;
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case 'Multiple Choice':
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$mcchoices = $this->getpath($pblock,
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array('#', 'response_lid', 0, '#', 'render_choice', 0, '#', 'flow_label'),
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array(), false);
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foreach ($mcchoices as $mcchoice) {
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$choices = new stdClass();
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$choices = $this->process_block($mcchoice, $choices);
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$block->choices[] = $choices;
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}
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break;
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case 'Short Response':
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// Do nothing?
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break;
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case 'Fill in the Blank':
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// Do nothing?
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break;
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default:
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$bbchoices = $this->getpath($pblock,
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array('#', 'response_lid', 0, '#', 'render_choice', 0, '#',
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'flow_label', 0, '#', 'response_label'),
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array(), false);
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$choices = array();
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$this->process_choices($bbchoices, $choices);
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$block->choices = $choices;
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}
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break;
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case 'RIGHT_MATCH_BLOCK':
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$matchinganswerset = $this->getpath($pblock,
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array('#', 'flow'),
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false, false);
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$answerset = array();
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foreach ($matchinganswerset as $answer) {
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$bbanswer = new stdClass;
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$bbanswer->text = $this->getpath($answer,
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array('#', 'flow', 0, '#', 'material', 0, '#', 'mat_extension',
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0, '#', 'mat_formattedtext', 0, '#'),
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false, false);
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$answerset[] = $bbanswer;
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}
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$block->matchinganswerset = $answerset;
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break;
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default:
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$this->error(get_string('unhandledpresblock', 'qformat_blackboard_six'));
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break;
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}
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$rawquestion->{$block->type} = $block;
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}
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// Determine response processing.
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// There is a section called 'outcomes' that I don't know what to do with.
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$resprocessing = $this->getpath($quest,
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array('#', 'resprocessing'),
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array(), false);
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$respconditions = $this->getpath($resprocessing[0],
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array('#', 'respcondition'),
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array(), false);
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$responses = array();
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if ($rawquestion->qtype == 'Matching') {
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$this->process_matching_responses($respconditions, $responses);
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} else {
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$this->process_responses($respconditions, $responses);
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}
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$rawquestion->responses = $responses;
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$feedbackset = $this->getpath($quest,
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array('#', 'itemfeedback'),
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array(), false);
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$feedbacks = array();
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$this->process_feedback($feedbackset, $feedbacks);
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$rawquestion->feedback = $feedbacks;
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return $rawquestion;
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}
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/**
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* Helper function to process an XML block into an object.
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* Can call himself recursively if necessary to parse this branch of the XML tree.
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* @param array $curblock XML block to parse
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* @param object $block block already parsed so far
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* @return object $block parsed
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*/
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public function process_block($curblock, $block) {
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$curtype = $this->getpath($curblock,
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array('@', 'class'),
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'', true);
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switch($curtype) {
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case 'FORMATTED_TEXT_BLOCK':
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$text = $this->getpath($curblock,
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array('#', 'material', 0, '#', 'mat_extension', 0, '#', 'mat_formattedtext', 0, '#'),
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'', true);
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$block->text = $this->strip_applet_tags_get_mathml($text);
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break;
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case 'FILE_BLOCK':
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$block->filename = $this->getpath($curblock,
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array('#', 'material', 0, '#'),
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'', true);
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if ($block->filename != '') {
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// TODO : determine what to do with the file's content.
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$this->error(get_string('filenothandled', 'qformat_blackboard_six', $block->filename));
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}
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break;
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case 'Block':
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if ($this->getpath($curblock,
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array('#', 'material', 0, '#', 'mattext'),
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false, false)) {
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$block->text = $this->getpath($curblock,
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array('#', 'material', 0, '#', 'mattext', 0, '#'),
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'', true);
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} else if ($this->getpath($curblock,
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array('#', 'material', 0, '#', 'mat_extension', 0, '#', 'mat_formattedtext'),
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false, false)) {
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$block->text = $this->getpath($curblock,
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array('#', 'material', 0, '#', 'mat_extension', 0, '#', 'mat_formattedtext', 0, '#'),
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'', true);
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} else if ($this->getpath($curblock,
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array('#', 'response_label'),
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false, false)) {
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// This is a response label block.
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$subblocks = $this->getpath($curblock,
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array('#', 'response_label', 0),
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array(), false);
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if (!isset($block->ident)) {
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if ($this->getpath($subblocks,
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array('@', 'ident'), '', true)) {
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$block->ident = $this->getpath($subblocks,
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array('@', 'ident'), '', true);
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}
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}
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foreach ($this->getpath($subblocks,
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array('#', 'flow_mat'), array(), false) as $subblock) {
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$this->process_block($subblock, $block);
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}
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} else {
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if ($this->getpath($curblock,
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array('#', 'flow_mat'), false, false)
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|| $this->getpath($curblock,
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array('#', 'flow'), false, false)) {
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if ($this->getpath($curblock,
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array('#', 'flow_mat'), false, false)) {
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$subblocks = $this->getpath($curblock,
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array('#', 'flow_mat'), array(), false);
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} else if ($this->getpath($curblock,
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array('#', 'flow'), false, false)) {
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$subblocks = $this->getpath($curblock,
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array('#', 'flow'), array(), false);
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}
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foreach ($subblocks as $sblock) {
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// This will recursively grab the sub blocks which should be of one of the other types.
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$this->process_block($sblock, $block);
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}
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}
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}
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break;
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case 'LINK_BLOCK':
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// Not sure how this should be included?
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$link = $this->getpath($curblock,
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array('#', 'material', 0, '#', 'mattext', 0, '@', 'uri'), '', true);
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if (!empty($link)) {
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$block->link = $link;
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} else {
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$block->link = '';
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}
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break;
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}
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return $block;
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}
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345 |
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346 |
/**
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347 |
* Preprocess XML blocks containing data for questions' choices.
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348 |
* Called by {@link create_raw_question()}
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349 |
* for matching, multichoice and fill in the blank questions.
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350 |
* @param array $bbchoices XML block to parse
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|
351 |
* @param array $choices array of choices suitable for a rawquestion.
|
|
|
352 |
*/
|
|
|
353 |
protected function process_choices($bbchoices, &$choices) {
|
|
|
354 |
foreach ($bbchoices as $choice) {
|
|
|
355 |
if ($this->getpath($choice,
|
|
|
356 |
array('@', 'ident'), '', true)) {
|
|
|
357 |
$curchoice = $this->getpath($choice,
|
|
|
358 |
array('@', 'ident'), '', true);
|
|
|
359 |
} else { // For multiple answers.
|
|
|
360 |
$curchoice = $this->getpath($choice,
|
|
|
361 |
array('#', 'response_label', 0), array(), false);
|
|
|
362 |
}
|
|
|
363 |
if ($this->getpath($choice,
|
|
|
364 |
array('#', 'flow_mat', 0), false, false)) { // For multiple answers.
|
|
|
365 |
$curblock = $this->getpath($choice,
|
|
|
366 |
array('#', 'flow_mat', 0), false, false);
|
|
|
367 |
// Reset $curchoice to new stdClass because process_block is expecting an object
|
|
|
368 |
// for the second argument and not a string,
|
|
|
369 |
// which is what is was set as originally - CT 8/7/06.
|
|
|
370 |
$curchoice = new stdClass();
|
|
|
371 |
$this->process_block($curblock, $curchoice);
|
|
|
372 |
} else if ($this->getpath($choice,
|
|
|
373 |
array('#', 'response_label'), false, false)) {
|
|
|
374 |
// Reset $curchoice to new stdClass because process_block is expecting an object
|
|
|
375 |
// for the second argument and not a string,
|
|
|
376 |
// which is what is was set as originally - CT 8/7/06.
|
|
|
377 |
$curchoice = new stdClass();
|
|
|
378 |
$this->process_block($choice, $curchoice);
|
|
|
379 |
}
|
|
|
380 |
$choices[] = $curchoice;
|
|
|
381 |
}
|
|
|
382 |
}
|
|
|
383 |
|
|
|
384 |
/**
|
|
|
385 |
* Preprocess XML blocks containing data for subanswers
|
|
|
386 |
* Called by {@link create_raw_question()}
|
|
|
387 |
* for matching questions only.
|
|
|
388 |
* @param array $bbresponses XML block to parse
|
|
|
389 |
* @param array $responses array of responses suitable for a matching rawquestion.
|
|
|
390 |
*/
|
|
|
391 |
protected function process_matching_responses($bbresponses, &$responses) {
|
|
|
392 |
foreach ($bbresponses as $bbresponse) {
|
|
|
393 |
$response = new stdClass;
|
|
|
394 |
if ($this->getpath($bbresponse,
|
|
|
395 |
array('#', 'conditionvar', 0, '#', 'varequal'), false, false)) {
|
|
|
396 |
$response->correct = $this->getpath($bbresponse,
|
|
|
397 |
array('#', 'conditionvar', 0, '#', 'varequal', 0, '#'), '', true);
|
|
|
398 |
$response->ident = $this->getpath($bbresponse,
|
|
|
399 |
array('#', 'conditionvar', 0, '#', 'varequal', 0, '@', 'respident'), '', true);
|
|
|
400 |
}
|
|
|
401 |
// Suppressed an else block because if the above if condition is false,
|
|
|
402 |
// the question is not necessary a broken one, most of the time it's an <other> tag.
|
|
|
403 |
|
|
|
404 |
$response->feedback = $this->getpath($bbresponse,
|
|
|
405 |
array('#', 'displayfeedback', 0, '@', 'linkrefid'), '', true);
|
|
|
406 |
$responses[] = $response;
|
|
|
407 |
}
|
|
|
408 |
}
|
|
|
409 |
|
|
|
410 |
/**
|
|
|
411 |
* Preprocess XML blocks containing data for responses processing.
|
|
|
412 |
* Called by {@link create_raw_question()}
|
|
|
413 |
* for all questions types.
|
|
|
414 |
* @param array $bbresponses XML block to parse
|
|
|
415 |
* @param array $responses array of responses suitable for a rawquestion.
|
|
|
416 |
*/
|
|
|
417 |
protected function process_responses($bbresponses, &$responses) {
|
|
|
418 |
foreach ($bbresponses as $bbresponse) {
|
|
|
419 |
$response = new stdClass();
|
|
|
420 |
if ($this->getpath($bbresponse,
|
|
|
421 |
array('@', 'title'), '', true)) {
|
|
|
422 |
$response->title = $this->getpath($bbresponse,
|
|
|
423 |
array('@', 'title'), '', true);
|
|
|
424 |
} else {
|
|
|
425 |
$response->title = $this->getpath($bbresponse,
|
|
|
426 |
array('#', 'displayfeedback', 0, '@', 'linkrefid'), '', true);
|
|
|
427 |
}
|
|
|
428 |
$response->ident = array();
|
|
|
429 |
if ($this->getpath($bbresponse,
|
|
|
430 |
array('#', 'conditionvar', 0, '#'), false, false)) {
|
|
|
431 |
$response->ident[0] = $this->getpath($bbresponse,
|
|
|
432 |
array('#', 'conditionvar', 0, '#'), array(), false);
|
|
|
433 |
} else if ($this->getpath($bbresponse,
|
|
|
434 |
array('#', 'conditionvar', 0, '#', 'other', 0, '#'), false, false)) {
|
|
|
435 |
$response->ident[0] = $this->getpath($bbresponse,
|
|
|
436 |
array('#', 'conditionvar', 0, '#', 'other', 0, '#'), array(), false);
|
|
|
437 |
}
|
|
|
438 |
if ($this->getpath($bbresponse,
|
|
|
439 |
array('#', 'conditionvar', 0, '#', 'and'), false, false)) {
|
|
|
440 |
$responseset = $this->getpath($bbresponse,
|
|
|
441 |
array('#', 'conditionvar', 0, '#', 'and'), array(), false);
|
|
|
442 |
foreach ($responseset as $rs) {
|
|
|
443 |
$response->ident[] = $this->getpath($rs, array('#'), array(), false);
|
|
|
444 |
if (!isset($response->feedback) and $this->getpath($rs, array('@'), false, false)) {
|
|
|
445 |
$response->feedback = $this->getpath($rs,
|
|
|
446 |
array('@', 'respident'), '', true);
|
|
|
447 |
}
|
|
|
448 |
}
|
|
|
449 |
} else {
|
|
|
450 |
$response->feedback = $this->getpath($bbresponse,
|
|
|
451 |
array('#', 'displayfeedback', 0, '@', 'linkrefid'), '', true);
|
|
|
452 |
}
|
|
|
453 |
|
|
|
454 |
// Determine what fraction to give response.
|
|
|
455 |
if ($this->getpath($bbresponse,
|
|
|
456 |
array('#', 'setvar'), false, false)) {
|
|
|
457 |
switch ($this->getpath($bbresponse,
|
|
|
458 |
array('#', 'setvar', 0, '#'), false, false)) {
|
|
|
459 |
case "SCORE.max":
|
|
|
460 |
$response->fraction = 1;
|
|
|
461 |
break;
|
|
|
462 |
default:
|
|
|
463 |
// I have only seen this being 0 or unset.
|
|
|
464 |
// There are probably fractional values of SCORE.max, but I'm not sure what they look like.
|
|
|
465 |
$response->fraction = 0;
|
|
|
466 |
break;
|
|
|
467 |
}
|
|
|
468 |
} else {
|
|
|
469 |
// Just going to assume this is the case this is probably not correct.
|
|
|
470 |
$response->fraction = 0;
|
|
|
471 |
}
|
|
|
472 |
|
|
|
473 |
$responses[] = $response;
|
|
|
474 |
}
|
|
|
475 |
}
|
|
|
476 |
|
|
|
477 |
/**
|
|
|
478 |
* Preprocess XML blocks containing data for responses feedbacks.
|
|
|
479 |
* Called by {@link create_raw_question()}
|
|
|
480 |
* for all questions types.
|
|
|
481 |
* @param array $feedbackset XML block to parse
|
|
|
482 |
* @param array $feedbacks array of feedbacks suitable for a rawquestion.
|
|
|
483 |
*/
|
|
|
484 |
public function process_feedback($feedbackset, &$feedbacks) {
|
|
|
485 |
foreach ($feedbackset as $bbfeedback) {
|
|
|
486 |
$feedback = new stdClass();
|
|
|
487 |
$feedback->ident = $this->getpath($bbfeedback,
|
|
|
488 |
array('@', 'ident'), '', true);
|
|
|
489 |
$feedback->text = '';
|
|
|
490 |
if ($this->getpath($bbfeedback,
|
|
|
491 |
array('#', 'flow_mat', 0), false, false)) {
|
|
|
492 |
$this->process_block($this->getpath($bbfeedback,
|
|
|
493 |
array('#', 'flow_mat', 0), false, false), $feedback);
|
|
|
494 |
} else if ($this->getpath($bbfeedback,
|
|
|
495 |
array('#', 'solution', 0, '#', 'solutionmaterial', 0, '#', 'flow_mat', 0), false, false)) {
|
|
|
496 |
$this->process_block($this->getpath($bbfeedback,
|
|
|
497 |
array('#', 'solution', 0, '#', 'solutionmaterial', 0, '#', 'flow_mat', 0), false, false), $feedback);
|
|
|
498 |
}
|
|
|
499 |
|
|
|
500 |
$feedbacks[$feedback->ident] = $feedback;
|
|
|
501 |
}
|
|
|
502 |
}
|
|
|
503 |
|
|
|
504 |
/**
|
|
|
505 |
* Create common parts of question
|
|
|
506 |
* @param object $quest rawquestion
|
|
|
507 |
* @return object Moodle question.
|
|
|
508 |
*/
|
|
|
509 |
public function process_common($quest) {
|
|
|
510 |
$question = $this->defaultquestion();
|
|
|
511 |
$text = $quest->QUESTION_BLOCK->text;
|
|
|
512 |
$questiontext = $this->cleaned_text_field($text);
|
|
|
513 |
$question->questiontext = $questiontext['text'];
|
|
|
514 |
$question->questiontextformat = $questiontext['format']; // Needed because add_blank_combined_feedback uses it.
|
|
|
515 |
if (isset($questiontext['itemid'])) {
|
|
|
516 |
$question->questiontextitemid = $questiontext['itemid'];
|
|
|
517 |
}
|
|
|
518 |
$question->name = $this->create_default_question_name($question->questiontext,
|
|
|
519 |
get_string('defaultname', 'qformat_blackboard_six' , $quest->id));
|
|
|
520 |
$question->generalfeedback = '';
|
|
|
521 |
$question->generalfeedbackformat = FORMAT_HTML;
|
|
|
522 |
$question->generalfeedbackfiles = array();
|
|
|
523 |
|
|
|
524 |
return $question;
|
|
|
525 |
}
|
|
|
526 |
|
|
|
527 |
/**
|
|
|
528 |
* Process True / False Questions
|
|
|
529 |
* Parse a truefalse rawquestion and add the result
|
|
|
530 |
* to the array of questions already parsed.
|
|
|
531 |
* @param object $quest rawquestion
|
|
|
532 |
* @param array $questions array of Moodle questions already done
|
|
|
533 |
*/
|
|
|
534 |
protected function process_tf($quest, &$questions) {
|
|
|
535 |
$question = $this->process_common($quest);
|
|
|
536 |
|
|
|
537 |
$question->qtype = 'truefalse';
|
|
|
538 |
$question->single = 1; // Only one answer is allowed.
|
|
|
539 |
$question->penalty = 1; // Penalty = 1 for truefalse questions.
|
|
|
540 |
// 0th [response] is the correct answer.
|
|
|
541 |
$responses = $quest->responses;
|
|
|
542 |
$correctresponse = $this->getpath($responses[0]->ident[0],
|
|
|
543 |
array('varequal', 0, '#'), '', true);
|
|
|
544 |
if ($correctresponse != 'false') {
|
|
|
545 |
$correct = true;
|
|
|
546 |
} else {
|
|
|
547 |
$correct = false;
|
|
|
548 |
}
|
|
|
549 |
$fback = new stdClass();
|
|
|
550 |
|
|
|
551 |
foreach ($quest->feedback as $fb) {
|
|
|
552 |
$fback->{$fb->ident} = $fb->text;
|
|
|
553 |
}
|
|
|
554 |
|
|
|
555 |
if ($correct) { // True is correct.
|
|
|
556 |
$question->answer = 1;
|
|
|
557 |
$question->feedbacktrue = $this->cleaned_text_field($fback->correct);
|
|
|
558 |
$question->feedbackfalse = $this->cleaned_text_field($fback->incorrect);
|
|
|
559 |
} else { // False is correct.
|
|
|
560 |
$question->answer = 0;
|
|
|
561 |
$question->feedbacktrue = $this->cleaned_text_field($fback->incorrect);
|
|
|
562 |
$question->feedbackfalse = $this->cleaned_text_field($fback->correct);
|
|
|
563 |
}
|
|
|
564 |
$question->correctanswer = $question->answer;
|
|
|
565 |
$questions[] = $question;
|
|
|
566 |
}
|
|
|
567 |
|
|
|
568 |
/**
|
|
|
569 |
* Process Fill in the Blank Questions
|
|
|
570 |
* Parse a fillintheblank rawquestion and add the result
|
|
|
571 |
* to the array of questions already parsed.
|
|
|
572 |
* @param object $quest rawquestion
|
|
|
573 |
* @param array $questions array of Moodle questions already done.
|
|
|
574 |
*/
|
|
|
575 |
protected function process_fblank($quest, &$questions) {
|
|
|
576 |
$question = $this->process_common($quest);
|
|
|
577 |
$question->qtype = 'shortanswer';
|
|
|
578 |
$question->usecase = 0; // Ignore case.
|
|
|
579 |
|
|
|
580 |
$answers = array();
|
|
|
581 |
$fractions = array();
|
|
|
582 |
$feedbacks = array();
|
|
|
583 |
|
|
|
584 |
// Extract the feedback.
|
|
|
585 |
$feedback = array();
|
|
|
586 |
foreach ($quest->feedback as $fback) {
|
|
|
587 |
if (isset($fback->ident)) {
|
|
|
588 |
if ($fback->ident == 'correct' || $fback->ident == 'incorrect') {
|
|
|
589 |
$feedback[$fback->ident] = $fback->text;
|
|
|
590 |
}
|
|
|
591 |
}
|
|
|
592 |
}
|
|
|
593 |
|
|
|
594 |
foreach ($quest->responses as $response) {
|
|
|
595 |
if (isset($response->title)) {
|
|
|
596 |
if ($this->getpath($response->ident[0],
|
|
|
597 |
array('varequal', 0, '#'), false, false)) {
|
|
|
598 |
// For BB Fill in the Blank, only interested in correct answers.
|
|
|
599 |
if ($response->feedback = 'correct') {
|
|
|
600 |
$answers[] = $this->getpath($response->ident[0],
|
|
|
601 |
array('varequal', 0, '#'), '', true);
|
|
|
602 |
$fractions[] = 1;
|
|
|
603 |
if (isset($feedback['correct'])) {
|
|
|
604 |
$feedbacks[] = $this->cleaned_text_field($feedback['correct']);
|
|
|
605 |
} else {
|
|
|
606 |
$feedbacks[] = $this->text_field('');
|
|
|
607 |
}
|
|
|
608 |
}
|
|
|
609 |
}
|
|
|
610 |
|
|
|
611 |
}
|
|
|
612 |
}
|
|
|
613 |
|
|
|
614 |
// Adding catchall to so that students can see feedback for incorrect answers when they enter something,
|
|
|
615 |
// the instructor did not enter.
|
|
|
616 |
$answers[] = '*';
|
|
|
617 |
$fractions[] = 0;
|
|
|
618 |
if (isset($feedback['incorrect'])) {
|
|
|
619 |
$feedbacks[] = $this->cleaned_text_field($feedback['incorrect']);
|
|
|
620 |
} else {
|
|
|
621 |
$feedbacks[] = $this->text_field('');
|
|
|
622 |
}
|
|
|
623 |
|
|
|
624 |
$question->answer = $answers;
|
|
|
625 |
$question->fraction = $fractions;
|
|
|
626 |
$question->feedback = $feedbacks; // Changed to assign $feedbacks to $question->feedback instead of.
|
|
|
627 |
|
|
|
628 |
if (!empty($question)) {
|
|
|
629 |
$questions[] = $question;
|
|
|
630 |
}
|
|
|
631 |
|
|
|
632 |
}
|
|
|
633 |
|
|
|
634 |
/**
|
|
|
635 |
* Process Multichoice Questions
|
|
|
636 |
* Parse a multichoice single answer rawquestion and add the result
|
|
|
637 |
* to the array of questions already parsed.
|
|
|
638 |
* @param object $quest rawquestion
|
|
|
639 |
* @param array $questions array of Moodle questions already done.
|
|
|
640 |
*/
|
|
|
641 |
protected function process_mc($quest, &$questions) {
|
|
|
642 |
$question = $this->process_common($quest);
|
|
|
643 |
$question->qtype = 'multichoice';
|
|
|
644 |
$question = $this->add_blank_combined_feedback($question);
|
|
|
645 |
$question->single = 1;
|
|
|
646 |
$feedback = array();
|
|
|
647 |
foreach ($quest->feedback as $fback) {
|
|
|
648 |
$feedback[$fback->ident] = $fback->text;
|
|
|
649 |
}
|
|
|
650 |
|
|
|
651 |
foreach ($quest->responses as $response) {
|
|
|
652 |
if (isset($response->title)) {
|
|
|
653 |
if ($response->title == 'correct') {
|
|
|
654 |
// Only one answer possible for this qtype so first index is correct answer.
|
|
|
655 |
$correct = $this->getpath($response->ident[0],
|
|
|
656 |
array('varequal', 0, '#'), '', true);
|
|
|
657 |
}
|
|
|
658 |
} else {
|
|
|
659 |
// Fallback method for when the title is not set.
|
|
|
660 |
if ($response->feedback == 'correct') {
|
|
|
661 |
// Only one answer possible for this qtype so first index is correct answer.
|
|
|
662 |
$correct = $this->getpath($response->ident[0],
|
|
|
663 |
array('varequal', 0, '#'), '', true);
|
|
|
664 |
}
|
|
|
665 |
}
|
|
|
666 |
}
|
|
|
667 |
|
|
|
668 |
$i = 0;
|
|
|
669 |
foreach ($quest->RESPONSE_BLOCK->choices as $response) {
|
|
|
670 |
$question->answer[$i] = $this->cleaned_text_field($response->text);
|
|
|
671 |
if ($correct == $response->ident) {
|
|
|
672 |
$question->fraction[$i] = 1;
|
|
|
673 |
// This is a bit of a hack to catch the feedback... first we see if a 'specific'
|
|
|
674 |
// feedback for this response exists, then if a 'correct' feedback exists.
|
|
|
675 |
|
|
|
676 |
if (!empty($feedback[$response->ident]) ) {
|
|
|
677 |
$question->feedback[$i] = $this->cleaned_text_field($feedback[$response->ident]);
|
|
|
678 |
} else if (!empty($feedback['correct'])) {
|
|
|
679 |
$question->feedback[$i] = $this->cleaned_text_field($feedback['correct']);
|
|
|
680 |
} else if (!empty($feedback[$i])) {
|
|
|
681 |
$question->feedback[$i] = $this->cleaned_text_field($feedback[$i]);
|
|
|
682 |
} else {
|
|
|
683 |
$question->feedback[$i] = $this->cleaned_text_field(get_string('correct', 'question'));
|
|
|
684 |
}
|
|
|
685 |
} else {
|
|
|
686 |
$question->fraction[$i] = 0;
|
|
|
687 |
if (!empty($feedback[$response->ident]) ) {
|
|
|
688 |
$question->feedback[$i] = $this->cleaned_text_field($feedback[$response->ident]);
|
|
|
689 |
} else if (!empty($feedback['incorrect'])) {
|
|
|
690 |
$question->feedback[$i] = $this->cleaned_text_field($feedback['incorrect']);
|
|
|
691 |
} else if (!empty($feedback[$i])) {
|
|
|
692 |
$question->feedback[$i] = $this->cleaned_text_field($feedback[$i]);
|
|
|
693 |
} else {
|
|
|
694 |
$question->feedback[$i] = $this->cleaned_text_field(get_string('incorrect', 'question'));
|
|
|
695 |
}
|
|
|
696 |
}
|
|
|
697 |
$i++;
|
|
|
698 |
}
|
|
|
699 |
|
|
|
700 |
if (!empty($question)) {
|
|
|
701 |
$questions[] = $question;
|
|
|
702 |
}
|
|
|
703 |
}
|
|
|
704 |
|
|
|
705 |
/**
|
|
|
706 |
* Process Multiple Choice Questions With Multiple Answers.
|
|
|
707 |
* Parse a multichoice multianswer rawquestion and add the result
|
|
|
708 |
* to the array of questions already parsed.
|
|
|
709 |
* @param object $quest rawquestion
|
|
|
710 |
* @param array $questions array of Moodle questions already done.
|
|
|
711 |
*/
|
|
|
712 |
public function process_ma($quest, &$questions) {
|
|
|
713 |
$question = $this->process_common($quest);
|
|
|
714 |
$question->qtype = 'multichoice';
|
|
|
715 |
$question = $this->add_blank_combined_feedback($question);
|
|
|
716 |
$question->single = 0; // More than one answer allowed.
|
|
|
717 |
|
|
|
718 |
$answers = $quest->responses;
|
|
|
719 |
$correctanswers = array();
|
|
|
720 |
foreach ($answers as $answer) {
|
|
|
721 |
if ($answer->title == 'correct') {
|
|
|
722 |
$answerset = $this->getpath($answer->ident[0],
|
|
|
723 |
array('and', 0, '#', 'varequal'), array(), false);
|
|
|
724 |
foreach ($answerset as $ans) {
|
|
|
725 |
$correctanswers[] = $ans['#'];
|
|
|
726 |
}
|
|
|
727 |
}
|
|
|
728 |
}
|
|
|
729 |
$feedback = new stdClass();
|
|
|
730 |
foreach ($quest->feedback as $fb) {
|
|
|
731 |
$feedback->{$fb->ident} = trim($fb->text);
|
|
|
732 |
}
|
|
|
733 |
|
|
|
734 |
$correctanswercount = count($correctanswers);
|
|
|
735 |
$fraction = 1 / $correctanswercount;
|
|
|
736 |
$choiceset = $quest->RESPONSE_BLOCK->choices;
|
|
|
737 |
$i = 0;
|
|
|
738 |
foreach ($choiceset as $choice) {
|
|
|
739 |
$question->answer[$i] = $this->cleaned_text_field(trim($choice->text));
|
|
|
740 |
if (in_array($choice->ident, $correctanswers)) {
|
|
|
741 |
// Correct answer.
|
|
|
742 |
$question->fraction[$i] = $fraction;
|
|
|
743 |
$question->feedback[$i] = $this->cleaned_text_field($feedback->correct);
|
|
|
744 |
} else {
|
|
|
745 |
// Wrong answer.
|
|
|
746 |
$question->fraction[$i] = 0;
|
|
|
747 |
$question->feedback[$i] = $this->cleaned_text_field($feedback->incorrect);
|
|
|
748 |
}
|
|
|
749 |
$i++;
|
|
|
750 |
}
|
|
|
751 |
|
|
|
752 |
$questions[] = $question;
|
|
|
753 |
}
|
|
|
754 |
|
|
|
755 |
/**
|
|
|
756 |
* Process Essay Questions
|
|
|
757 |
* Parse an essay rawquestion and add the result
|
|
|
758 |
* to the array of questions already parsed.
|
|
|
759 |
* @param object $quest rawquestion
|
|
|
760 |
* @param array $questions array of Moodle questions already done.
|
|
|
761 |
*/
|
|
|
762 |
public function process_essay($quest, &$questions) {
|
|
|
763 |
|
|
|
764 |
$question = $this->process_common($quest);
|
|
|
765 |
$question->qtype = 'essay';
|
|
|
766 |
|
|
|
767 |
$question->feedback = array();
|
|
|
768 |
// Not sure where to get the correct answer from?
|
|
|
769 |
foreach ($quest->feedback as $feedback) {
|
|
|
770 |
// Added this code to put the possible solution that the
|
|
|
771 |
// instructor gives as the Moodle answer for an essay question.
|
|
|
772 |
if ($feedback->ident == 'solution') {
|
|
|
773 |
$question->graderinfo = $this->cleaned_text_field($feedback->text);
|
|
|
774 |
}
|
|
|
775 |
}
|
|
|
776 |
// Added because essay/questiontype.php:save_question_option is expecting a
|
|
|
777 |
// fraction property - CT 8/10/06.
|
|
|
778 |
$question->fraction[] = 1;
|
|
|
779 |
$question->defaultmark = 1;
|
|
|
780 |
$question->responseformat = 'editor';
|
|
|
781 |
$question->responserequired = 1;
|
|
|
782 |
$question->responsefieldlines = 15;
|
|
|
783 |
$question->attachments = 0;
|
|
|
784 |
$question->attachmentsrequired = 0;
|
|
|
785 |
$question->responsetemplate = $this->text_field('');
|
|
|
786 |
|
|
|
787 |
$questions[] = $question;
|
|
|
788 |
}
|
|
|
789 |
|
|
|
790 |
/**
|
|
|
791 |
* Process Matching Questions
|
|
|
792 |
* Parse a matching rawquestion and add the result
|
|
|
793 |
* to the array of questions already parsed.
|
|
|
794 |
* @param object $quest rawquestion
|
|
|
795 |
* @param array $questions array of Moodle questions already done.
|
|
|
796 |
*/
|
|
|
797 |
public function process_matching($quest, &$questions) {
|
|
|
798 |
|
|
|
799 |
// Blackboard matching questions can't be imported in core Moodle without a loss in data,
|
|
|
800 |
// as core match question don't allow HTML in subanswers. The contributed ddmatch
|
|
|
801 |
// question type support HTML in subanswers.
|
|
|
802 |
// The ddmatch question type is not part of core, so we need to check if it is defined.
|
|
|
803 |
$ddmatchisinstalled = question_bank::is_qtype_installed('ddmatch');
|
|
|
804 |
|
|
|
805 |
$question = $this->process_common($quest);
|
|
|
806 |
$question = $this->add_blank_combined_feedback($question);
|
|
|
807 |
$question->valid = true;
|
|
|
808 |
if ($ddmatchisinstalled) {
|
|
|
809 |
$question->qtype = 'ddmatch';
|
|
|
810 |
} else {
|
|
|
811 |
$question->qtype = 'match';
|
|
|
812 |
}
|
|
|
813 |
// Construction of the array holding mappings between subanswers and subquestions.
|
|
|
814 |
foreach ($quest->RESPONSE_BLOCK->subquestions as $qid => $subq) {
|
|
|
815 |
foreach ($quest->responses as $rid => $resp) {
|
|
|
816 |
if (isset($resp->ident) && $resp->ident == $subq->ident) {
|
|
|
817 |
$correct = $resp->correct;
|
|
|
818 |
}
|
|
|
819 |
}
|
|
|
820 |
|
|
|
821 |
foreach ($subq->choices as $cid => $choice) {
|
|
|
822 |
if ($choice == $correct) {
|
|
|
823 |
$mappings[$subq->ident] = $cid;
|
|
|
824 |
}
|
|
|
825 |
}
|
|
|
826 |
}
|
|
|
827 |
|
|
|
828 |
foreach ($subq->choices as $choiceid => $choice) {
|
|
|
829 |
$subanswertext = $quest->RIGHT_MATCH_BLOCK->matchinganswerset[$choiceid]->text;
|
|
|
830 |
if ($ddmatchisinstalled) {
|
|
|
831 |
$subanswer = $this->cleaned_text_field($subanswertext);
|
|
|
832 |
} else {
|
|
|
833 |
$subanswertext = html_to_text($this->cleaninput($subanswertext), 0);
|
|
|
834 |
$subanswer = $subanswertext;
|
|
|
835 |
}
|
|
|
836 |
|
|
|
837 |
if ($subanswertext != '') { // Only import non empty subanswers.
|
|
|
838 |
$subquestion = '';
|
|
|
839 |
|
|
|
840 |
$fiber = moodle_array_keys_filter($mappings, $choiceid);
|
|
|
841 |
foreach ($fiber as $correctanswerid) {
|
|
|
842 |
// We have found a correspondance for this subanswer so we need to take the associated subquestion.
|
|
|
843 |
foreach ($quest->RESPONSE_BLOCK->subquestions as $qid => $subq) {
|
|
|
844 |
$currentsubqid = $subq->ident;
|
|
|
845 |
if (strcmp ($currentsubqid, $correctanswerid) == 0) {
|
|
|
846 |
$subquestion = $subq->text;
|
|
|
847 |
break;
|
|
|
848 |
}
|
|
|
849 |
}
|
|
|
850 |
$question->subquestions[] = $this->cleaned_text_field($subquestion);
|
|
|
851 |
$question->subanswers[] = $subanswer;
|
|
|
852 |
}
|
|
|
853 |
|
|
|
854 |
if ($subquestion == '') { // Then in this case, $choice is a distractor.
|
|
|
855 |
$question->subquestions[] = $this->text_field('');
|
|
|
856 |
$question->subanswers[] = $subanswer;
|
|
|
857 |
}
|
|
|
858 |
}
|
|
|
859 |
}
|
|
|
860 |
|
|
|
861 |
// Verify that this matching question has enough subquestions and subanswers.
|
|
|
862 |
$subquestioncount = 0;
|
|
|
863 |
$subanswercount = 0;
|
|
|
864 |
$subanswers = $question->subanswers;
|
|
|
865 |
foreach ($question->subquestions as $key => $subquestion) {
|
|
|
866 |
$subquestion = $subquestion['text'];
|
|
|
867 |
$subanswer = $subanswers[$key];
|
|
|
868 |
if ($subquestion != '') {
|
|
|
869 |
$subquestioncount++;
|
|
|
870 |
}
|
|
|
871 |
$subanswercount++;
|
|
|
872 |
}
|
|
|
873 |
if ($subquestioncount < 2 || $subanswercount < 3) {
|
|
|
874 |
$this->error(get_string('notenoughtsubans', 'qformat_blackboard_six', $question->questiontext));
|
|
|
875 |
} else {
|
|
|
876 |
$questions[] = $question;
|
|
|
877 |
}
|
|
|
878 |
}
|
|
|
879 |
|
|
|
880 |
/**
|
|
|
881 |
* Add a category question entry based on the assessment title
|
|
|
882 |
* @param array $xml the xml tree
|
|
|
883 |
* @param array $questions the questions already parsed
|
|
|
884 |
*/
|
|
|
885 |
public function process_category($xml, &$questions) {
|
|
|
886 |
$title = $this->getpath($xml, array('questestinterop', '#', 'assessment', 0, '@', 'title'), '', true);
|
|
|
887 |
|
|
|
888 |
$dummyquestion = new stdClass();
|
|
|
889 |
$dummyquestion->qtype = 'category';
|
|
|
890 |
$dummyquestion->category = $this->cleaninput($this->clean_question_name($title));
|
|
|
891 |
|
|
|
892 |
$questions[] = $dummyquestion;
|
|
|
893 |
}
|
|
|
894 |
|
|
|
895 |
/**
|
|
|
896 |
* Strip the applet tag used by Blackboard to render mathml formulas,
|
|
|
897 |
* keeping the mathml tag.
|
|
|
898 |
* @param string $string
|
|
|
899 |
* @return string
|
|
|
900 |
*/
|
|
|
901 |
public function strip_applet_tags_get_mathml($string) {
|
|
|
902 |
if (stristr($string, '</APPLET>') === false) {
|
|
|
903 |
return $string;
|
|
|
904 |
} else {
|
|
|
905 |
// Strip all applet tags keeping stuff before/after and inbetween (if mathml) them.
|
|
|
906 |
while (stristr($string, '</APPLET>') !== false) {
|
|
|
907 |
preg_match("/(.*)\<applet.*value=\"(\<math\>.*\<\/math\>)\".*\<\/applet\>(.*)/i", $string, $mathmls);
|
|
|
908 |
$string = $mathmls[1].$mathmls[2].$mathmls[3];
|
|
|
909 |
}
|
|
|
910 |
return $string;
|
|
|
911 |
}
|
|
|
912 |
}
|
|
|
913 |
|
|
|
914 |
}
|