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350 lines
16 KiB
350 lines
16 KiB
<?php
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/* For licensing terms, see /license.txt */
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require_once 'LinkCategory.class.php';
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require_once 'Announcement.class.php';
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require_once 'Event.class.php';
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/**
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* A course-object to use in Export/Import/Backup/Copy
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* @author Bart Mollet <bart.mollet@hogent.be>
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* @package chamilo.backup
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*/
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class Course
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{
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public $resources;
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public $code;
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public $path;
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public $destination_path;
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public $destination_db;
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public $encoding;
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/**
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* Create a new Course-object
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*/
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public function __construct()
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{
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$this->resources = array();
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$this->code = '';
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$this->path = '';
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$this->backup_path = '';
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$this->encoding = api_get_system_encoding();
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}
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/**
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* Check if a resource links to the given resource
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*/
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public function is_linked_resource(& $resource_to_check)
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{
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foreach ($this->resources as $type => $resources) {
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if (is_array($resources)) {
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foreach ($resources as $resource) {
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if ($resource->links_to($resource_to_check) ) {
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return true;
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}
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if ($type == RESOURCE_LEARNPATH && get_class($resource)=='CourseCopyLearnpath') {
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if ($resource->has_item($resource_to_check)) {
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return true;
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}
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}
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}
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}
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}
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return false;
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}
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/**
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* Add a resource from a given type to this course
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*/
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public function add_resource(& $resource)
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{
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$this->resources[$resource->get_type()][$resource->get_id()] = $resource;
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}
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/**
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* Does this course has resources?
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* @param int $resource_type Check if this course has resources of the
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* given type. If no type is given, check if course has resources of any
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* type.
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*/
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public function has_resources($resource_type = null)
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{
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if( $resource_type != null) {
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return isset($this->resources[$resource_type]) && is_array($this->resources[$resource_type]) && (count(
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$this->resources[$resource_type]
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) > 0);
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}
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return (count($this->resources) > 0);
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}
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/**
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* @inheritdoc
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*/
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public function show()
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{ /*
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echo '<pre>';
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print_r($this);
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echo '</pre>';*/
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}
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/**
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* Returns sample text based on the imported course content.
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* This sample text is to be used for course language or encoding detection if there is missing (meta)data in the archive.
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* @return string The resulting sample text extracted from some common resources' data fields.
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*/
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public function get_sample_text()
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{
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$sample_text = '';
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foreach ($this->resources as $type => & $resources) {
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if (count($resources) > 0) {
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foreach ($resources as $id => & $resource) {
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$title = '';
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$description = '';
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switch ($type) {
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case RESOURCE_ANNOUNCEMENT:
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$title = $resource->title;
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$description = $resource->content;
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break;
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case RESOURCE_DOCUMENT:
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$title = $resource->title;
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$description = $resource->comment;
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break;
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case RESOURCE_EVENT:
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$title = $resource->title;
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$description = $resource->content;
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break;
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case RESOURCE_FORUM:
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$title = $resource->title;
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$description = $resource->description;
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break;
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case RESOURCE_FORUMCATEGORY:
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$title = $resource->title;
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$description = $resource->description;
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break;
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case RESOURCE_FORUMPOST:
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$title = $resource->title;
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$description = $resource->text;
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break;
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case RESOURCE_FORUMTOPIC:
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$title = $resource->title;
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break;
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case RESOURCE_GLOSSARY:
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$title = $resource->name;
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$description = $resource->description;
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break;
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case RESOURCE_LEARNPATH:
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$title = $resource->name;
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$description = $resource->description;
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break;
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case RESOURCE_LINK:
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$title = $resource->title;
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$description = $resource->description;
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break;
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case RESOURCE_LINKCATEGORY:
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$title = $resource->title;
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$description = $resource->description;
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break;
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case RESOURCE_QUIZ:
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$title = $resource->title;
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$description = $resource->description;
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break;
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case RESOURCE_TEST_CATEGORY:
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$title = $resource->title;
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$description = $resource->description;
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break;
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case RESOURCE_QUIZQUESTION:
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$title = $resource->question;
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$description = $resource->description;
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break;
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case RESOURCE_SCORM:
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$title = $resource->title;
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break;
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case RESOURCE_SURVEY:
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$title = $resource->title;
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$description = $resource->subtitle;
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break;
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case RESOURCE_SURVEYQUESTION:
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$title = $resource->survey_question;
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$description = $resource->survey_question_comment;
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break;
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case RESOURCE_TOOL_INTRO:
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$description = $resource->intro_text;
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break;
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case RESOURCE_WIKI:
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$title = $resource->title;
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$description = $resource->content;
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break;
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case RESOURCE_THEMATIC:
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$title = $resource->title;
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$description = $resource->content;
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break;
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case RESOURCE_ATTENDANCE:
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$title = $resource->params['name'];
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$description = $resource->params['description'];
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break;
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case RESOURCE_WORK:
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$title = $resource->title;
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$description = $resource->description;
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break;
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default:
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break;
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}
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$title = api_html_to_text($title);
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$description = api_html_to_text($description);
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if (!empty($title)) {
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$sample_text .= $title."\n";
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}
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if (!empty($description)) {
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$sample_text .= $description."\n";
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}
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if (!empty($title) || !empty($description)) {
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$sample_text .= "\n";
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}
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}
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}
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}
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return $sample_text;
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}
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/**
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* Converts to the system encoding all the language-sensitive fields in the imported course.
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*/
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public function to_system_encoding()
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{
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if (api_equal_encodings($this->encoding, api_get_system_encoding())) {
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return;
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}
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foreach ($this->resources as $type => & $resources) {
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if (count($resources) > 0) {
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foreach ($resources as & $resource) {
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switch ($type) {
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case RESOURCE_ANNOUNCEMENT:
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$resource->title = api_to_system_encoding($resource->title, $this->encoding);
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$resource->content = api_to_system_encoding($resource->content, $this->encoding);
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break;
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case RESOURCE_DOCUMENT:
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$resource->title = api_to_system_encoding($resource->title, $this->encoding);
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$resource->comment = api_to_system_encoding($resource->comment, $this->encoding);
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break;
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case RESOURCE_EVENT:
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$resource->title = api_to_system_encoding($resource->title, $this->encoding);
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$resource->content = api_to_system_encoding($resource->content, $this->encoding);
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break;
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case RESOURCE_FORUM:
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$resource->title = api_to_system_encoding($resource->title, $this->encoding);
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$resource->description = api_to_system_encoding($resource->description, $this->encoding);
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break;
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case RESOURCE_FORUMCATEGORY:
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$resource->title = api_to_system_encoding($resource->title, $this->encoding);
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$resource->description = api_to_system_encoding($resource->description, $this->encoding);
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break;
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case RESOURCE_FORUMPOST:
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$resource->title = api_to_system_encoding($resource->title, $this->encoding);
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$resource->text = api_to_system_encoding($resource->text, $this->encoding);
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$resource->poster_name = api_to_system_encoding($resource->poster_name, $this->encoding);
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break;
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case RESOURCE_FORUMTOPIC:
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$resource->title = api_to_system_encoding($resource->title, $this->encoding);
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$resource->topic_poster_name = api_to_system_encoding($resource->topic_poster_name, $this->encoding);
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$resource->title_qualify = api_to_system_encoding($resource->title_qualify, $this->encoding);
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break;
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case RESOURCE_GLOSSARY:
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$resource->name = api_to_system_encoding($resource->name, $this->encoding);
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$resource->description = api_to_system_encoding($resource->description, $this->encoding);
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break;
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case RESOURCE_LEARNPATH:
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$resource->name = api_to_system_encoding($resource->name, $this->encoding);
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$resource->description = api_to_system_encoding($resource->description, $this->encoding);
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$resource->content_maker = api_to_system_encoding($resource->content_maker, $this->encoding);
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$resource->content_license = api_to_system_encoding($resource->content_license, $this->encoding);
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break;
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case RESOURCE_LINK:
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$resource->title = api_to_system_encoding($resource->title, $this->encoding);
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$resource->description = api_to_system_encoding($resource->description, $this->encoding);
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break;
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case RESOURCE_LINKCATEGORY:
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$resource->title = api_to_system_encoding($resource->title, $this->encoding);
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$resource->description = api_to_system_encoding($resource->description, $this->encoding);
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break;
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case RESOURCE_QUIZ:
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$resource->title = api_to_system_encoding($resource->title, $this->encoding);
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$resource->description = api_to_system_encoding($resource->description, $this->encoding);
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break;
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case RESOURCE_QUIZQUESTION:
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$resource->question = api_to_system_encoding($resource->question, $this->encoding);
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$resource->description = api_to_system_encoding($resource->description, $this->encoding);
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if (is_array($resource->answers) && count($resource->answers) > 0) {
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foreach ($resource->answers as $index => & $answer) {
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$answer['answer'] = api_to_system_encoding($answer['answer'], $this->encoding);
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$answer['comment'] = api_to_system_encoding($answer['comment'], $this->encoding);
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}
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}
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break;
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case RESOURCE_TEST_CATEGORY:
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$resource->title = api_to_system_encoding($resource->title, $this->encoding);
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$resource->description = api_to_system_encoding($resource->description, $this->encoding);
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break;
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case RESOURCE_SCORM:
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$resource->title = api_to_system_encoding($resource->title, $this->encoding);
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break;
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case RESOURCE_SURVEY:
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$resource->title = api_to_system_encoding($resource->title, $this->encoding);
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$resource->subtitle = api_to_system_encoding($resource->subtitle, $this->encoding);
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$resource->author = api_to_system_encoding($resource->author, $this->encoding);
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$resource->intro = api_to_system_encoding($resource->intro, $this->encoding);
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$resource->surveythanks = api_to_system_encoding($resource->surveythanks, $this->encoding);
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break;
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case RESOURCE_SURVEYQUESTION:
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$resource->survey_question = api_to_system_encoding($resource->survey_question, $this->encoding);
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$resource->survey_question_comment = api_to_system_encoding($resource->survey_question_comment, $this->encoding);
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break;
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case RESOURCE_TOOL_INTRO:
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$resource->intro_text = api_to_system_encoding($resource->intro_text, $this->encoding);
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break;
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case RESOURCE_WIKI:
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$resource->title = api_to_system_encoding($resource->title, $this->encoding);
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$resource->content = api_to_system_encoding($resource->content, $this->encoding);
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$resource->reflink = api_to_system_encoding($resource->reflink, $this->encoding);
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break;
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case RESOURCE_WORK:
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$resource->url = api_to_system_encoding($resource->url, $this->encoding);
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$resource->title = api_to_system_encoding($resource->title, $this->encoding);
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$resource->description = api_to_system_encoding($resource->description, $this->encoding);
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break;
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default:
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break;
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}
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}
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}
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}
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$this->encoding = api_get_system_encoding();
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}
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/**
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* Serialize the course with the best serializer available
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*/
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public static function serialize($course)
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{
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if (extension_loaded('igbinary')) {
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return igbinary_serialize($course);
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} else {
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return serialize($course);
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}
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}
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/**
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* Unserialize the course with the best serializer available
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*/
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public static function unserialize($course)
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{
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if (extension_loaded('igbinary')) {
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return igbinary_unserialize($course);
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} else {
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return unserialize($course);
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}
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}
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}
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