Your IP : 192.168.165.1
<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* @package moodlecore
* @subpackage backup-imscc
* @copyright 2009 Mauro Rondinelli (mauro.rondinelli [AT] uvcms.com)
* @copyright 2011 Darko Miletic (dmiletic@moodlerooms.com)
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') or die('Direct access to this script is forbidden.');
class cc_quiz extends entities {
public function generate_node_question_categories () {
$instances = $this->generate_instances();
$node_course_question_categories = $this->create_node_course_question_categories($instances);
$node_course_question_categories = empty($node_course_question_categories) ? '' : $node_course_question_categories;
return $node_course_question_categories;
}
public function generate_node_course_modules_mod () {
cc2moodle::log_action('Creating Quiz mods');
$node_course_modules_mod = '';
$instances = $this->generate_instances();
if (!empty($instances)) {
foreach ($instances as $instance) {
if ($instance['is_question_bank'] == 0) {
$node_course_modules_mod .= $this->create_node_course_modules_mod($instance);
}
}
}
return $node_course_modules_mod;
}
private function create_node_course_modules_mod_quiz_feedback () {
$sheet_question_mod_feedback = cc2moodle::loadsheet(SHEET_COURSE_SECTIONS_SECTION_MODS_MOD_QUIZ_FEEDBACK);
return $sheet_question_mod_feedback;
}
private function generate_instances () {
$last_instance_id = 0;
$last_question_id = 0;
$last_answer_id = 0;
$instances = array();
$types = array(MOODLE_TYPE_QUIZ, MOODLE_TYPE_QUESTION_BANK);
foreach ($types as $type) {
if (!empty(cc2moodle::$instances['instances'][$type])) {
foreach (cc2moodle::$instances['instances'][$type] as $instance) {
if ($type == MOODLE_TYPE_QUIZ) {
$is_question_bank = 0;
} else {
$is_question_bank = 1;
}
$assessment_file = $this->get_external_xml($instance['resource_indentifier']);
if (!empty($assessment_file)) {
$assessment = $this->load_xml_resource(
cc2moodle::$path_to_manifest_folder . DIRECTORY_SEPARATOR . $assessment_file
);
if (!empty($assessment)) {
$replace_values = array('unlimited' => 0);
$questions = $this->get_questions(
$assessment, $last_question_id, $last_answer_id, dirname($assessment_file), $is_question_bank
);
$question_count = count($questions);
if (!empty($question_count)) {
$last_instance_id++;
$instances[$instance['resource_indentifier']]['questions'] = $questions;
$instances[$instance['resource_indentifier']]['id'] = $last_instance_id;
$instances[$instance['resource_indentifier']]['title'] = $instance['title'];
$instances[$instance['resource_indentifier']]['is_question_bank'] = $is_question_bank;
$instances[$instance['resource_indentifier']]['options']['timelimit'] =
$this->get_global_config($assessment, 'qmd_timelimit', 0);
$instances[$instance['resource_indentifier']]['options']['max_attempts'] =
$this->get_global_config($assessment, 'cc_maxattempts', 0, $replace_values);
}
}
}
}
}
}
return $instances;
}
private function create_node_course_modules_mod ($instance) {
$sheet_question_mod = cc2moodle::loadsheet(SHEET_COURSE_SECTIONS_SECTION_MODS_MOD_QUIZ);
$node_course_modules_quiz_question_instances = $this->create_node_course_modules_mod_quiz_question_instances($instance);
$node_course_modules_quiz_feedback = $this->create_node_course_modules_mod_quiz_feedback($instance);
$questions_strings = $this->get_questions_string($instance);
$quiz_stamp = 'localhost+' . time() . '+' . $this->generate_random_string(6);
$find_tags = array('[#mod_id#]',
'[#mod_name#]',
'[#mod_intro#]',
'[#mod_stamp#]',
'[#question_string#]',
'[#date_now#]',
'[#mod_max_attempts#]',
'[#mod_timelimit#]',
'[#node_question_instance#]',
'[#node_questions_feedback#]');
$replace_values = array($instance['id'],
self::safexml($instance['title']),
self::safexml($instance['title']),
self::safexml($quiz_stamp),
self::safexml($questions_strings),
time(),
$instance['options']['max_attempts'],
$instance['options']['timelimit'],
$node_course_modules_quiz_question_instances,
$node_course_modules_quiz_feedback); // This one has tags.
$node_question_mod = str_replace($find_tags, $replace_values, $sheet_question_mod);
return $node_question_mod;
}
private function get_global_config ($assessment, $option, $default_value, $replace_values = '') {
$xpath = cc2moodle::newx_path($assessment, cc2moodle::getquizns());
$metadata = $xpath->query('/xmlns:questestinterop/xmlns:assessment/xmlns:qtimetadata/xmlns:qtimetadatafield');
foreach ($metadata as $field) {
$field_label = $xpath->query('xmlns:fieldlabel', $field);
$field_label = !empty($field_label->item(0)->nodeValue) ? $field_label->item(0)->nodeValue : '';
if (strtolower($field_label) == strtolower($option)) {
$field_entry = $xpath->query('xmlns:fieldentry', $field);
$response = !empty($field_entry->item(0)->nodeValue) ? $field_entry->item(0)->nodeValue : '';
}
}
$response = !empty($response) ? trim($response) : '';
if (!empty($replace_values)) {
foreach ($replace_values as $key => $value) {
$response = ($key == $response) ? $value : $response;
}
}
$response = empty($response) ? $default_value : $response;
return $response;
}
private function create_node_course_modules_mod_quiz_question_instances ($instance) {
$node_course_module_mod_quiz_questions_instances = '';
$sheet_question_mod_instance = cc2moodle::loadsheet(SHEET_COURSE_SECTIONS_SECTION_MODS_MOD_QUIZ_QUESTION_INSTANCE);
$find_tags = array('[#question_id#]' , '[#instance_id#]');
if (!empty($instance['questions'])) {
foreach ($instance['questions'] as $question) {
$replace_values = array($question['id'] , $question['id']);
$node_course_module_mod_quiz_questions_instances .= str_replace(
$find_tags, $replace_values, $sheet_question_mod_instance
);
}
$node_course_module_mod_quiz_questions_instances = str_replace(
$find_tags, $replace_values, $node_course_module_mod_quiz_questions_instances
);
}
return $node_course_module_mod_quiz_questions_instances;
}
private function get_questions_string ($instance) {
$questions_string = '';
if (!empty($instance['questions'])) {
foreach ($instance['questions'] as $question) {
$questions_string .= $question['id'] . ',';
}
}
$questions_string = !empty($questions_string) ? substr($questions_string, 0, strlen($questions_string) - 1) : '';
return $questions_string;
}
private function create_node_course_question_categories($instances) {
$sheet_question_categories = cc2moodle::loadsheet(SHEET_COURSE_QUESTION_CATEGORIES);
if (!empty($instances)) {
$node_course_question_categories_question_category = '';
foreach ($instances as $instance) {
$node_course_question_categories_question_category .=
$this->create_node_course_question_categories_question_category($instance);
}
$find_tags = array('[#node_course_question_categories_question_category#]');
$replace_values = array($node_course_question_categories_question_category);
$node_course_question_categories = str_replace($find_tags, $replace_values, $sheet_question_categories);
}
$node_course_question_categories = empty($node_course_question_categories) ? '' : $node_course_question_categories;
return $node_course_question_categories;
}
private function create_node_course_question_categories_question_category ($instance) {
$sheet_question_categories_quetion_category = cc2moodle::loadsheet(SHEET_COURSE_QUESTION_CATEGORIES_QUESTION_CATEGORY);
$find_tags = array('[#quiz_id#]',
'[#quiz_name#]',
'[#quiz_stamp#]',
'[#node_course_question_categories_question_category_questions#]');
$node_course_question_categories_questions =
$this->create_node_course_question_categories_question_category_question($instance);
$node_course_question_categories_questions =
empty($node_course_question_categories_questions) ? '' : $node_course_question_categories_questions;
$quiz_stamp = 'localhost+' . time() . '+' . $this->generate_random_string(6);
$replace_values = array($instance['id'],
self::safexml($instance['title']),
$quiz_stamp,
$node_course_question_categories_questions);
$node_question_categories = str_replace($find_tags, $replace_values, $sheet_question_categories_quetion_category);
return $node_question_categories;
}
private function create_node_course_question_categories_question_category_question ($instance) {
global $USER;
$node_course_question_categories_question = '';
$find_tags = array('[#question_id#]',
'[#question_title#]',
'[#question_text#]',
'[#question_type#]',
'[#question_general_feedback#]',
'[#question_defaultgrade#]',
'[#date_now#]',
'[#question_type_nodes#]',
'[#question_stamp#]',
'[#question_version#]',
'[#logged_user#]');
$sheet_question_categories_question = cc2moodle::loadsheet(SHEET_COURSE_QUESTION_CATEGORIES_QUESTION_CATEGORY_QUESTION);
$questions = $instance['questions'];
if (!empty($questions)) {
foreach ($questions as $question) {
$quiz_stamp = 'localhost+' . time() . '+' . $this->generate_random_string(6);
$quiz_version = 'localhost+' . time() . '+' . $this->generate_random_string(6);
$question_moodle_type = $question['moodle_type'];
$question_cc_type = $question['cc_type'];
$question_type_node = '';
$question_type_node = ($question_moodle_type == MOODLE_QUIZ_MULTIPLE_CHOICE) ? $this->create_node_course_question_categories_question_category_question_multiple_choice($question) : $question_type_node;
$question_type_node = ($question_moodle_type == MOODLE_QUIZ_TRUE_FALSE) ? $this->create_node_course_question_categories_question_category_question_true_false($question) : $question_type_node;
$question_type_node = ($question_moodle_type == MOODLE_QUIZ_ESSAY) ? $this->create_node_course_question_categories_question_category_question_eesay($question) : $question_type_node;
$question_type_node = ($question_moodle_type == MOODLE_QUIZ_SHORTANSWER) ? $this->create_node_course_question_categories_question_category_question_shortanswer($question) : $question_type_node;
$replace_values = array($question['id'],
self::safexml($this->truncate_text($question['title'], 255, true)),
self::safexml($question['title']),
$question_moodle_type,
self::safexml($question['feedback']),
$question['defaultgrade'], //default grade
time(),
$question_type_node,
$quiz_stamp,
$quiz_version,
$USER->id);
$node_course_question_categories_question .= str_replace($find_tags, $replace_values, $sheet_question_categories_question);
}
}
$node_course_question_categories_question = empty($node_course_question_categories_question) ? '' : $node_course_question_categories_question;
return $node_course_question_categories_question;
}
private function get_questions ($assessment, &$last_question_id, &$last_answer_id, $root_path, $is_question_bank) {
$questions = array();
$xpath = cc2moodle::newx_path($assessment, cc2moodle::getquizns());
if (!$is_question_bank) {
$questions_items = $xpath->query('/xmlns:questestinterop/xmlns:assessment/xmlns:section/xmlns:item');
} else {
$questions_items = $xpath->query('/xmlns:questestinterop/xmlns:objectbank/xmlns:item');
}
foreach ($questions_items as $question_item) {
$count_questions = $xpath->evaluate('count(xmlns:presentation/xmlns:flow/xmlns:material/xmlns:mattext)', $question_item);
if ($count_questions == 0) {
$question_title = $xpath->query('xmlns:presentation/xmlns:material/xmlns:mattext', $question_item);
} else {
$question_title = $xpath->query('xmlns:presentation/xmlns:flow/xmlns:material/xmlns:mattext', $question_item);
}
$question_title = !empty($question_title->item(0)->nodeValue) ? $question_title->item(0)->nodeValue : '';
$question_identifier = $xpath->query('@ident', $question_item);
$question_identifier = !empty($question_identifier->item(0)->nodeValue) ? $question_identifier->item(0)->nodeValue : '';
if (!empty($question_identifier)) {
$question_type = $this->get_question_type($question_identifier, $assessment);
if (!empty($question_type['moodle'])) {
$last_question_id++;
$questions[$question_identifier]['id'] = $last_question_id;
$question_title = $this->update_sources($question_title, $root_path);
$question_title = !empty($question_title) ? str_replace("%24", "\$", $this->include_titles($question_title)) : '';
$questions[$question_identifier]['title'] = $question_title;
$questions[$question_identifier]['identifier'] = $question_identifier;
$questions[$question_identifier]['moodle_type'] = $question_type['moodle'];
$questions[$question_identifier]['cc_type'] = $question_type['cc'];
$questions[$question_identifier]['feedback'] = $this->get_general_feedback($assessment, $question_identifier);
$questions[$question_identifier]['defaultgrade'] = $this->get_defaultgrade($assessment, $question_identifier);
$questions[$question_identifier]['answers'] = $this->get_answers($question_identifier, $assessment, $last_answer_id);
}
}
}
$questions = !empty($questions) ? $questions : '';
return $questions;
}
private function str_replace_once ($search, $replace, $subject) {
$first_char = strpos($subject, $search);
if ($first_char !== false) {
$before_str = substr($subject, 0, $first_char);
$after_str = substr($subject, $first_char + strlen($search));
return $before_str . $replace . $after_str;
} else {
return $subject;
}
}
private function get_defaultgrade($assessment, $question_identifier) {
$result = 1;
$xpath = cc2moodle::newx_path($assessment, cc2moodle::getquizns());
$query = '//xmlns:item[@ident="' . $question_identifier . '"]';
$query .= '//xmlns:qtimetadatafield[xmlns:fieldlabel="cc_weighting"]/xmlns:fieldentry';
$defgrade = $xpath->query($query);
if (!empty($defgrade) && ($defgrade->length > 0)) {
$resp = (int)$defgrade->item(0)->nodeValue;
if ($resp >= 0 && $resp <= 99) {
$result = $resp;
}
}
return $result;
}
private function get_general_feedback ($assessment, $question_identifier) {
$xpath = cc2moodle::newx_path($assessment, cc2moodle::getquizns());
$respconditions = $xpath->query('//xmlns:item[@ident="' . $question_identifier . '"]/xmlns:resprocessing/xmlns:respcondition');
if (!empty($respconditions)) {
foreach ($respconditions as $respcondition) {
$continue = $respcondition->getAttributeNode('continue');
$continue = !empty($continue->nodeValue) ? strtolower($continue->nodeValue) : '';
if ($continue == 'yes') {
$display_feedback = $xpath->query('xmlns:displayfeedback', $respcondition);
if (!empty($display_feedback)) {
foreach ($display_feedback as $feedback) {
$feedback_identifier = $feedback->getAttributeNode('linkrefid');
$feedback_identifier = !empty($feedback_identifier->nodeValue) ? $feedback_identifier->nodeValue : '';
if (!empty($feedback_identifier)) {
$feedbacks_identifiers[] = $feedback_identifier;
}
}
}
}
}
}
$feedback = '';
$feedbacks_identifiers = empty($feedbacks_identifiers) ? '' : $feedbacks_identifiers;
if (!empty($feedbacks_identifiers)) {
foreach ($feedbacks_identifiers as $feedback_identifier) {
$feedbacks = $xpath->query('//xmlns:item[@ident="' . $question_identifier . '"]/xmlns:itemfeedback[@ident="' . $feedback_identifier . '"]/xmlns:flow_mat/xmlns:material/xmlns:mattext');
$feedback .= !empty($feedbacks->item(0)->nodeValue) ? $feedbacks->item(0)->nodeValue . ' ' : '';
}
}
return $feedback;
}
private function get_feedback ($assessment, $identifier, $item_identifier, $question_type) {
$xpath = cc2moodle::newx_path($assessment, cc2moodle::getquizns());
$resource_processing = $xpath->query('//xmlns:item[@ident="' . $item_identifier . '"]/xmlns:resprocessing/xmlns:respcondition');
if (!empty($resource_processing)) {
foreach ($resource_processing as $response) {
$varequal = $xpath->query('xmlns:conditionvar/xmlns:varequal', $response);
$varequal = !empty($varequal->item(0)->nodeValue) ? $varequal->item(0)->nodeValue : '';
if (strtolower($varequal) == strtolower($identifier) || ($question_type == CC_QUIZ_ESSAY)) {
$display_feedback = $xpath->query('xmlns:displayfeedback', $response);
if (!empty($display_feedback)) {
foreach ($display_feedback as $feedback) {
$feedback_identifier = $feedback->getAttributeNode('linkrefid');
$feedback_identifier = !empty($feedback_identifier->nodeValue) ? $feedback_identifier->nodeValue : '';
if (!empty($feedback_identifier)) {
$feedbacks_identifiers[] = $feedback_identifier;
}
}
}
}
}
}
$feedback = '';
$feedbacks_identifiers = empty($feedbacks_identifiers) ? '' : $feedbacks_identifiers;
if (!empty($feedbacks_identifiers)) {
foreach ($feedbacks_identifiers as $feedback_identifier) {
$feedbacks = $xpath->query('//xmlns:item[@ident="' . $item_identifier . '"]/xmlns:itemfeedback[@ident="' . $feedback_identifier . '"]/xmlns:flow_mat/xmlns:material/xmlns:mattext');
$feedback .= !empty($feedbacks->item(0)->nodeValue) ? $feedbacks->item(0)->nodeValue . ' ' : '';
}
}
return $feedback;
}
private function get_answers_fib ($question_identifier, $identifier, $assessment, &$last_answer_id) {
$xpath = cc2moodle::newx_path($assessment, cc2moodle::getquizns());
$answers_fib = array();
$response_items = $xpath->query('//xmlns:item[@ident="' . $question_identifier . '"]/xmlns:resprocessing/xmlns:respcondition');
foreach ($response_items as $response_item) {
$setvar = $xpath->query('xmlns:setvar', $response_item);
$setvar = is_object($setvar->item(0)) ? $setvar->item(0)->nodeValue : '';
if ($setvar != '') {
$last_answer_id++;
$answer_title = $xpath->query('xmlns:conditionvar/xmlns:varequal[@respident="' . $identifier . '"]', $response_item);
$answer_title = !empty($answer_title->item(0)->nodeValue) ? $answer_title->item(0)->nodeValue : '';
$case = $xpath->query('xmlns:conditionvar/xmlns:varequal/@case', $response_item);
$case = is_object($case->item(0)) ? $case->item(0)->nodeValue : 'no'
;
$case = strtolower($case) == 'yes' ? 1 :
0;
$display_feedback = $xpath->query('xmlns:displayfeedback', $response_item);
unset($feedbacks_identifiers);
if (!empty($display_feedback)) {
foreach ($display_feedback as $feedback) {
$feedback_identifier = $feedback->getAttributeNode('linkrefid');
$feedback_identifier = !empty($feedback_identifier->nodeValue) ? $feedback_identifier->nodeValue : '';
if (!empty($feedback_identifier)) {
$feedbacks_identifiers[] = $feedback_identifier;
}
}
}
$feedback = '';
$feedbacks_identifiers = empty($feedbacks_identifiers) ? '' : $feedbacks_identifiers;
if (!empty($feedbacks_identifiers)) {
foreach ($feedbacks_identifiers as $feedback_identifier) {
$feedbacks = $xpath->query('//xmlns:item[@ident="' . $question_identifier . '"]/xmlns:itemfeedback[@ident="' . $feedback_identifier . '"]/xmlns:flow_mat/xmlns:material/xmlns:mattext');
$feedback .= !empty($feedbacks->item(0)->nodeValue) ? $feedbacks->item(0)->nodeValue . ' ' : '';
}
}
$answers_fib[] = array('id' => $last_answer_id,
'title' => $answer_title,
'score' => $setvar,
'feedback' => $feedback,
'case' => $case);
}
}
$answers_fib = empty($answers_fib) ? '' : $answers_fib;
return $answers_fib;
}
private function get_answers_pattern_match ($question_identifier, $identifier, $assessment, &$last_answer_id) {
$xpath = cc2moodle::newx_path($assessment, cc2moodle::getquizns());
$answers_fib = array();
$response_items = $xpath->query('//xmlns:item[@ident="' . $question_identifier . '"]/xmlns:resprocessing/xmlns:respcondition');
foreach ($response_items as $response_item) {
$setvar = $xpath->query('xmlns:setvar', $response_item);
$setvar = is_object($setvar->item(0)) ? $setvar->item(0)->nodeValue : '';
if ($setvar != '') {
$last_answer_id++;
$answer_title = $xpath->query('xmlns:conditionvar/xmlns:varequal[@respident="' . $identifier . '"]', $response_item);
$answer_title = !empty($answer_title->item(0)->nodeValue) ? $answer_title->item(0)->nodeValue : '';
if (empty($answer_title)) {
$answer_title = $xpath->query('xmlns:conditionvar/xmlns:varsubstring[@respident="' . $identifier . '"]', $response_item);
$answer_title = !empty($answer_title->item(0)->nodeValue) ? '*' . $answer_title->item(0)->nodeValue . '*' : '';
}
if (empty($answer_title)) {
$answer_title = '*';
}
$case = $xpath->query('xmlns:conditionvar/xmlns:varequal/@case', $response_item);
$case = is_object($case->item(0)) ? $case->item(0)->nodeValue : 'no'
;
$case = strtolower($case) == 'yes' ? 1 :
0;
$display_feedback = $xpath->query('xmlns:displayfeedback', $response_item);
unset($feedbacks_identifiers);
if (!empty($display_feedback)) {
foreach ($display_feedback as $feedback) {
$feedback_identifier = $feedback->getAttributeNode('linkrefid');
$feedback_identifier = !empty($feedback_identifier->nodeValue) ? $feedback_identifier->nodeValue : '';
if (!empty($feedback_identifier)) {
$feedbacks_identifiers[] = $feedback_identifier;
}
}
}
$feedback = '';
$feedbacks_identifiers = empty($feedbacks_identifiers) ? '' : $feedbacks_identifiers;
if (!empty($feedbacks_identifiers)) {
foreach ($feedbacks_identifiers as $feedback_identifier) {
$feedbacks = $xpath->query('//xmlns:item[@ident="' . $question_identifier . '"]/xmlns:itemfeedback[@ident="' . $feedback_identifier . '"]/xmlns:flow_mat/xmlns:material/xmlns:mattext');
$feedback .= !empty($feedbacks->item(0)->nodeValue) ? $feedbacks->item(0)->nodeValue . ' ' : '';
}
}
$answers_fib[] = array('id' => $last_answer_id,
'title' => $answer_title,
'score' => $setvar,
'feedback' => $feedback,
'case' => $case);
}
}
$answers_fib = empty($answers_fib) ? '' : $answers_fib;
return $answers_fib;
}
private function get_answers ($identifier, $assessment, &$last_answer_id) {
$xpath = cc2moodle::newx_path($assessment, cc2moodle::getquizns());
$answers = array();
$question_cc_type = $this->get_question_type($identifier, $assessment);
$question_cc_type = $question_cc_type['cc'];
$is_multiresponse = ($question_cc_type == CC_QUIZ_MULTIPLE_RESPONSE);
if ($question_cc_type == CC_QUIZ_MULTIPLE_CHOICE || $is_multiresponse || $question_cc_type == CC_QUIZ_TRUE_FALSE) {
$query_answers = '//xmlns:item[@ident="' . $identifier . '"]/xmlns:presentation/xmlns:response_lid/xmlns:render_choice/xmlns:response_label';
$query_answers_with_flow = '//xmlns:item[@ident="' . $identifier . '"]/xmlns:presentation/xmlns:flow/xmlns:response_lid/xmlns:render_choice/xmlns:response_label';
$query_indentifer = '@ident';
$query_title = 'xmlns:material/xmlns:mattext';
}
if ($question_cc_type == CC_QUIZ_ESSAY) {
$query_answers = '//xmlns:item[@ident="' . $identifier . '"]/xmlns:presentation/xmlns:response_str';
$query_answers_with_flow = '//xmlns:item[@ident="' . $identifier . '"]/xmlns:presentation/xmlns:flow/xmlns:response_str';
$query_indentifer = '@ident';
$query_title = 'xmlns:render_fib';
}
if ($question_cc_type == CC_QUIZ_FIB || $question_cc_type == CC_QUIZ_PATTERN_MACHT) {
$xpath_query = '//xmlns:item[@ident="' . $identifier . '"]/xmlns:presentation/xmlns:response_str/@ident';
$xpath_query_with_flow = '//xmlns:item[@ident="' . $identifier . '"]/xmlns:presentation/xmlns:flow/xmlns:response_str/@ident';
$count_response = $xpath->evaluate('count(' . $xpath_query_with_flow . ')');
if ($count_response == 0) {
$answer_identifier = $xpath->query($xpath_query);
} else {
$answer_identifier = $xpath->query($xpath_query_with_flow);
}
$answer_identifier = !empty($answer_identifier->item(0)->nodeValue) ? $answer_identifier->item(0)->nodeValue : '';
if ($question_cc_type == CC_QUIZ_FIB) {
$answers = $this->get_answers_fib ($identifier, $answer_identifier, $assessment, $last_answer_id);
} else {
$answers = $this->get_answers_pattern_match ($identifier, $answer_identifier, $assessment, $last_answer_id);
}
} else {
$count_response = $xpath->evaluate('count(' . $query_answers_with_flow . ')');
if ($count_response == 0) {
$response_items = $xpath->query($query_answers);
} else {
$response_items = $xpath->query($query_answers_with_flow);
}
if (!empty($response_items)) {
if ($is_multiresponse) {
$correct_answer_score = 0;
//get the correct answers count
$canswers_query = "//xmlns:item[@ident='{$identifier}']//xmlns:setvar[@varname='SCORE'][.=100]/../xmlns:conditionvar//xmlns:varequal[@case='Yes'][not(parent::xmlns:not)]";
$canswers = $xpath->query($canswers_query);
if ($canswers->length > 0) {
$correct_answer_score = round(1.0 / (float)$canswers->length, 7); //weird
$correct_answers_ident = array();
foreach ($canswers as $cnode) {
$correct_answers_ident[$cnode->nodeValue] = true;
}
}
}
foreach ($response_items as $response_item) {
$last_answer_id++;
$answer_identifier = $xpath->query($query_indentifer, $response_item);
$answer_identifier = !empty($answer_identifier->item(0)->nodeValue) ? $answer_identifier->item(0)->nodeValue : '';
$answer_title = $xpath->query($query_title, $response_item);
$answer_title = !empty($answer_title->item(0)->nodeValue) ? $answer_title->item(0)->nodeValue : '';
$answer_feedback = $this->get_feedback($assessment, $answer_identifier, $identifier, $question_cc_type);
$answer_score = $this->get_score($assessment, $answer_identifier, $identifier);
if ($is_multiresponse && isset($correct_answers_ident[$answer_identifier])) {
$answer_score = $correct_answer_score;
}
$answers[] = array('id' => $last_answer_id,
'title' => $answer_title,
'score' => $answer_score,
'identifier' => $answer_identifier,
'feedback' => $answer_feedback);
}
}
}
$answers = empty($answers) ? '' : $answers;
return $answers;
}
private function get_score ($assessment, $identifier, $question_identifier) {
$xpath = cc2moodle::newx_path($assessment, cc2moodle::getquizns());
$resource_processing = $xpath->query('//xmlns:item[@ident="' . $question_identifier . '"]/xmlns:resprocessing/xmlns:respcondition');
if (!empty($resource_processing)) {
foreach ($resource_processing as $response) {
$question_cc_type = $this->get_question_type($question_identifier, $assessment);
$question_cc_type = $question_cc_type['cc'];
$varequal = $xpath->query('xmlns:conditionvar/xmlns:varequal', $response);
$varequal = !empty($varequal->item(0)->nodeValue) ? $varequal->item(0)->nodeValue : '';
if (strtolower($varequal) == strtolower($identifier)) {
$score = $xpath->query('xmlns:setvar', $response);
$score = !empty($score->item(0)->nodeValue) ? $score->item(0)->nodeValue : '';
}
}
}
$score = empty($score) ? 0 : sprintf("%.7F", $score);
return $score;
}
private function create_node_course_question_categories_question_category_question_multiple_choice ($question) {
$node_course_question_categories_question_answer = '';
$sheet_question_categories_question = cc2moodle::loadsheet(SHEET_COURSE_QUESTION_CATEGORIES_QUESTION_CATEGORY_QUESTION_MULTIPLE_CHOICE);
if (!empty($question['answers'])) {
foreach ($question['answers'] as $answer) {
$node_course_question_categories_question_answer .= $this->create_node_course_question_categories_question_category_question_answer($answer);
}
}
$answer_string = $this->get_answers_string($question['answers']);
$is_single = ($question['cc_type'] == CC_QUIZ_MULTIPLE_CHOICE) ? 1 : 0;
$find_tags = array('[#node_course_question_categories_question_category_question_answer#]',
'[#answer_string#]',
'[#is_single#]');
$replace_values = array($node_course_question_categories_question_answer,
self::safexml($answer_string),
$is_single);
$node_question_categories_question = str_replace($find_tags, $replace_values, $sheet_question_categories_question);
return $node_question_categories_question;
}
private function create_node_course_question_categories_question_category_question_eesay ($question) {
$node_course_question_categories_question_answer = '';
$sheet_question_categories_question = cc2moodle::loadsheet(SHEET_COURSE_QUESTION_CATEGORIES_QUESTION_CATEGORY_QUESTION_EESAY);
if (!empty($question['answers'])) {
foreach ($question['answers'] as $answer) {
$node_course_question_categories_question_answer .= $this->create_node_course_question_categories_question_category_question_answer($answer);
}
}
$find_tags = array('[#node_course_question_categories_question_category_question_answer#]');
$replace_values = array($node_course_question_categories_question_answer);
$node_question_categories_question = str_replace($find_tags, $replace_values, $sheet_question_categories_question);
return $node_question_categories_question;
}
private function create_node_course_question_categories_question_category_question_shortanswer ($question) { //, &$fib_questions) {
$sheet_question_categories_question = cc2moodle::loadsheet(SHEET_COURSE_QUESTION_CATEGORIES_QUESTION_CATEGORY_QUESTION_SHORTANSWER);
$node_course_question_categories_question_answer = '';
if (!empty($question['answers'])) {
foreach ($question['answers'] as $answer) {
$node_course_question_categories_question_answer .= $this->create_node_course_question_categories_question_category_question_answer($answer);
}
}
$answers_string = $this->get_answers_string($question['answers']);
$use_case = 0;
foreach ($question['answers'] as $answer) {
if ($answer['case'] == 1) {
$use_case = 1;
}
}
$find_tags = array('[#answers_string#]',
'[#use_case#]',
'[#node_course_question_categories_question_category_question_answer#]');
$replace_values = array(self::safexml($answers_string),
self::safexml($use_case),
$node_course_question_categories_question_answer);
$node_question_categories_question = str_replace($find_tags, $replace_values, $sheet_question_categories_question);
return $node_question_categories_question;
}
private function create_node_course_question_categories_question_category_question_true_false ($question) {
$node_course_question_categories_question_answer = '';
$sheet_question_categories_question = cc2moodle::loadsheet(SHEET_COURSE_QUESTION_CATEGORIES_QUESTION_CATEGORY_QUESTION_TRUE_FALSE);
$trueanswer = null;
$falseanswer = null;
if (!empty($question['answers'])) {
// Identify the true and false answers.
foreach ($question['answers'] as $answer) {
if ($answer['identifier'] == 'true') {
$trueanswer = $answer;
} else if ($answer['identifier'] == 'false') {
$falseanswer = $answer;
} else {
// Should not happen, but just in case.
throw new coding_exception("Unknown answer identifier detected" .
" in true/false quiz question with id {$question['id']}.");
}
$node_course_question_categories_question_answer .= $this->create_node_course_question_categories_question_category_question_answer($answer);
}
// Make sure the true and false answer was found.
if (is_null($trueanswer) || is_null($falseanswer)) {
throw new coding_exception("Unable to correctly identify the " .
"true and false answers in the question with id {$question['id']}.");
}
}
$find_tags = array('[#node_course_question_categories_question_category_question_answer#]',
'[#true_answer_id#]',
'[#false_answer_id#]');
$replace_values = array($node_course_question_categories_question_answer,
$trueanswer['id'],
$falseanswer['id']);
$node_question_categories_question = str_replace($find_tags, $replace_values, $sheet_question_categories_question);
return $node_question_categories_question;
}
private function get_answers_string ($answers) {
$answer_string = '';
if (!empty($answers)) {
foreach ($answers as $answer) {
$answer_string .= $answer['id'] . ',';
}
}
$answer_string = !empty($answer_string) ? substr($answer_string, 0, strlen($answer_string) - 1) : '';
return $answer_string;
}
private function create_node_course_question_categories_question_category_question_answer ($answer) {
$sheet_question_categories_question_answer = cc2moodle::loadsheet(SHEET_COURSE_QUESTION_CATEGORIES_QUESTION_CATEGORY_QUESTION_ANSWER);
$find_tags = array('[#answer_id#]',
'[#answer_text#]',
'[#answer_score#]',
'[#answer_feedback#]');
$replace_values = array($answer['id'],
self::safexml($answer['title']),
$answer['score'],
self::safexml($answer['feedback']));
$node_question_categories_question_answer = str_replace($find_tags, $replace_values, $sheet_question_categories_question_answer);
return $node_question_categories_question_answer;
}
private function get_question_type ($identifier, $assessment) {
$xpath = cc2moodle::newx_path($assessment, cc2moodle::getquizns());
$metadata = $xpath->query('//xmlns:item[@ident="' . $identifier . '"]/xmlns:itemmetadata/xmlns:qtimetadata/xmlns:qtimetadatafield');
foreach ($metadata as $field) {
$field_label = $xpath->query('xmlns:fieldlabel', $field);
$field_label = !empty($field_label->item(0)->nodeValue) ? $field_label->item(0)->nodeValue : '';
if ($field_label == 'cc_profile') {
$field_entry = $xpath->query('xmlns:fieldentry', $field);
$type = !empty($field_entry->item(0)->nodeValue) ? $field_entry->item(0)->nodeValue : '';
}
}
$return_type = array();
$return_type['moodle'] = '';
$return_type['cc'] = $type;
if ($type == CC_QUIZ_MULTIPLE_CHOICE) {
$return_type['moodle'] = MOODLE_QUIZ_MULTIPLE_CHOICE;
}
if ($type == CC_QUIZ_MULTIPLE_RESPONSE) {
$return_type['moodle'] = MOODLE_QUIZ_MULTIPLE_CHOICE;
}
if ($type == CC_QUIZ_TRUE_FALSE) {
$return_type['moodle'] = MOODLE_QUIZ_TRUE_FALSE;
}
if ($type == CC_QUIZ_ESSAY) {
$return_type['moodle'] = MOODLE_QUIZ_ESSAY;
}
if ($type == CC_QUIZ_FIB) {
$return_type['moodle'] = MOODLE_QUIZ_SHORTANSWER;
}
if ($type == CC_QUIZ_PATTERN_MACHT) {
$return_type['moodle'] = MOODLE_QUIZ_SHORTANSWER;
}
return $return_type;
}
}