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Developer Documentation
- Bug fixes for general core bugs in 3.10.x will end 8 November 2021 (12 months).
- Bug fixes for security issues in 3.10.x will end 9 May 2022 (18 months).
- PHP version: minimum PHP 7.2.0 Note: minimum PHP version has increased since Moodle 3.8. PHP 7.3.x and 7.4.x are supported too.
/backup/cc/ -> cc2moodle.php (source)
Differences Between: [Versions 310 and 402] [Versions 310 and 403]
1 <?php 2 // This file is part of Moodle - http://moodle.org/ 3 // 4 // Moodle is free software: you can redistribute it and/or modify 5 // it under the terms of the GNU General Public License as published by 6 // the Free Software Foundation, either version 3 of the License, or 7 // (at your option) any later version. 8 // 9 // Moodle is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU General Public License for more details. 13 // 14 // You should have received a copy of the GNU General Public License 15 // along with Moodle. If not, see <http://www.gnu.org/licenses/>. 16 /** 17 * @package moodlecore 18 * @subpackage backup-imscc 19 * @copyright 2009 Mauro Rondinelli (mauro.rondinelli [AT] uvcms.com) 20 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 21 */ 22 23 defined('MOODLE_INTERNAL') or die('Direct access to this script is forbidden.'); 24 25 require_once($CFG->dirroot . '/backup/cc/entities.class.php'); 26 require_once($CFG->dirroot . '/backup/cc/entity.label.class.php'); 27 require_once($CFG->dirroot . '/backup/cc/entity.resource.class.php'); 28 require_once($CFG->dirroot . '/backup/cc/entity.forum.class.php'); 29 require_once($CFG->dirroot . '/backup/cc/entity.quiz.class.php'); 30 31 class cc2moodle { 32 33 const CC_TYPE_FORUM = 'imsdt_xmlv1p0'; 34 const CC_TYPE_QUIZ = 'imsqti_xmlv1p2/imscc_xmlv1p0/assessment'; 35 const CC_TYPE_QUESTION_BANK = 'imsqti_xmlv1p2/imscc_xmlv1p0/question-bank'; 36 const CC_TYPE_WEBLINK = 'imswl_xmlv1p0'; 37 const CC_TYPE_WEBCONTENT = 'webcontent'; 38 const CC_TYPE_ASSOCIATED_CONTENT = 'associatedcontent/imscc_xmlv1p0/learning-application-resource'; 39 const CC_TYPE_EMPTY = ''; 40 41 public static $restypes = array('associatedcontent/imscc_xmlv1p0/learning-application-resource', 'webcontent'); 42 public static $forumns = array('dt' => 'http://www.imsglobal.org/xsd/imsdt_v1p0'); 43 public static $quizns = array('xmlns' => 'http://www.imsglobal.org/xsd/ims_qtiasiv1p2'); 44 public static $resourcens = array('wl' => 'http://www.imsglobal.org/xsd/imswl_v1p0'); 45 /** 46 * 47 * @return array 48 */ 49 public static function getquizns() { 50 return static::$quizns; 51 } 52 53 /** 54 * 55 * @return array 56 */ 57 public static function getforumns() { 58 return static::$forumns; 59 } 60 61 /** 62 * 63 * @return array 64 */ 65 public static function getresourcens() { 66 return static::$resourcens; 67 } 68 69 public static function get_manifest($folder) { 70 if (!is_dir($folder)) { 71 return false; 72 } 73 74 // Before iterate over directories, try to find one manifest at top level 75 if (file_exists($folder . '/imsmanifest.xml')) { 76 return $folder . '/imsmanifest.xml'; 77 } 78 79 $result = false; 80 try { 81 $dirIter = new RecursiveDirectoryIterator($folder, RecursiveDirectoryIterator::KEY_AS_PATHNAME); 82 $recIter = new RecursiveIteratorIterator($dirIter, RecursiveIteratorIterator::CHILD_FIRST); 83 foreach ($recIter as $info) { 84 if ($info->isFile() && ($info->getFilename() == 'imsmanifest.xml')) { 85 $result = $info->getPathname(); 86 break; 87 } 88 } 89 } catch (Exception $e) {} 90 91 return $result; 92 } 93 94 public static $instances = array(); 95 public static $manifest; 96 public static $path_to_manifest_folder; 97 98 public static $namespaces = array('imscc' => 'http://www.imsglobal.org/xsd/imscc/imscp_v1p1', 99 'lomimscc' => 'http://ltsc.ieee.org/xsd/imscc/LOM', 100 'lom' => 'http://ltsc.ieee.org/xsd/LOM', 101 'voc' => 'http://ltsc.ieee.org/xsd/LOM/vocab', 102 'xsi' => 'http://www.w3.org/2001/XMLSchema-instance', 103 'cc' => 'http://www.imsglobal.org/xsd/imsccauth_v1p0'); 104 105 function __construct ($path_to_manifest) { 106 107 static::$manifest = new DOMDocument(); 108 static::$manifest->validateOnParse = false; 109 110 static::$path_to_manifest_folder = dirname($path_to_manifest); 111 112 static::log_action('Proccess start'); 113 static::log_action('Load the manifest file: ' . $path_to_manifest); 114 115 if (!static::$manifest->load($path_to_manifest, LIBXML_NONET)) { 116 static::log_action('Cannot load the manifest file: ' . $path_to_manifest, true); 117 } 118 } 119 120 public function is_auth () { 121 122 $xpath = static::newx_path(static::$manifest, static::$namespaces); 123 124 $count_auth = $xpath->evaluate('count(/imscc:manifest/cc:authorizations)'); 125 126 if ($count_auth > 0) { 127 $response = true; 128 } else { 129 $response = false; 130 } 131 132 return $response; 133 } 134 135 protected function get_metadata ($section, $key) { 136 137 $xpath = static::newx_path(static::$manifest, static::$namespaces); 138 139 $metadata = $xpath->query('/imscc:manifest/imscc:metadata/lomimscc:lom/lomimscc:' . $section . '/lomimscc:' . $key . '/lomimscc:string'); 140 $value = !empty($metadata->item(0)->nodeValue) ? $metadata->item(0)->nodeValue : ''; 141 142 return $value; 143 } 144 145 public function generate_moodle_xml () { 146 147 global $CFG, $OUTPUT; 148 149 $cdir = static::$path_to_manifest_folder . DIRECTORY_SEPARATOR . 'course_files'; 150 151 if (!file_exists($cdir)) { 152 mkdir($cdir, $CFG->directorypermissions, true); 153 } 154 155 $sheet_base = static::loadsheet(SHEET_BASE); 156 157 // MOODLE_BACKUP / INFO / DETAILS / MOD 158 $node_info_details_mod = $this->create_code_info_details_mod(); 159 160 // MOODLE_BACKUP / BLOCKS / BLOCK 161 $node_course_blocks_block = $this->create_node_course_blocks_block(); 162 163 // MOODLE_BACKUP / COURSES / SECTIONS / SECTION 164 $node_course_sections_section = $this->create_node_course_sections_section(); 165 166 // MOODLE_BACKUP / COURSES / QUESTION_CATEGORIES 167 $node_course_question_categories = $this->create_node_question_categories(); 168 169 // MOODLE_BACKUP / COURSES / MODULES / MOD 170 $node_course_modules_mod = $this->create_node_course_modules_mod(); 171 172 // MOODLE_BACKUP / COURSE / HEADER 173 $node_course_header = $this->create_node_course_header(); 174 175 // GENERAL INFO 176 $filename = optional_param('file', 'not_available.zip', PARAM_RAW); 177 $filename = basename($filename); 178 179 $www_root = $CFG->wwwroot; 180 181 $find_tags = array('[#zip_filename#]', 182 '[#www_root#]', 183 '[#node_course_header#]', 184 '[#node_info_details_mod#]', 185 '[#node_course_blocks_block#]', 186 '[#node_course_sections_section#]', 187 '[#node_course_question_categories#]', 188 '[#node_course_modules#]'); 189 190 $replace_values = array($filename, 191 $www_root, 192 $node_course_header, 193 $node_info_details_mod, 194 $node_course_blocks_block, 195 $node_course_sections_section, 196 $node_course_question_categories, 197 $node_course_modules_mod); 198 199 $result_xml = str_replace($find_tags, $replace_values, $sheet_base); 200 201 // COPY RESOURSE FILES 202 $entities = new entities(); 203 204 $entities->move_all_files(); 205 206 if (array_key_exists("index", self::$instances)) { 207 208 if (!file_put_contents(static::$path_to_manifest_folder . DIRECTORY_SEPARATOR . 'moodle.xml', $result_xml)) { 209 static::log_action('Cannot save the moodle manifest file: ' . static::$path_to_tmp_folder . DIRECTORY_SEPARATOR . 'moodle.xml', true); 210 } else { 211 $status = true; 212 } 213 214 } else { 215 $status = false; 216 echo $OUTPUT->notification('The course is empty'); 217 static::log_action('The course is empty', false); 218 } 219 220 return $status; 221 222 } 223 224 protected function get_sections_numbers ($instances) { 225 226 $count = 0; 227 228 if (array_key_exists("index", $instances)) { 229 foreach ($instances["index"] as $instance) { 230 if ($instance["deep"] == ROOT_DEEP) { 231 $count++; 232 } 233 } 234 } 235 236 return $count; 237 } 238 239 protected function create_node_course_header () { 240 241 $node_course_header = ''; 242 $sheet_course_header = static::loadsheet(SHEET_COURSE_HEADER); 243 244 $course_title = trim($this->get_metadata('general', 'title')); 245 $course_title = empty($course_title) ? 'Untitled Course' : $course_title; 246 $course_description = $this->get_metadata('general', 'description'); 247 $section_count = $this->get_sections_numbers(static::$instances) - 1; 248 249 if ($section_count == -1) { 250 $section_count = 0; 251 } 252 253 if (empty($course_title)) { 254 $this->log_action('The course title not found', true); 255 } 256 257 $course_short_name = $this->create_course_code($course_title); 258 259 $find_tags = array('[#course_name#]', 260 '[#course_short_name#]', 261 '[#course_description#]', 262 '[#date_now#]', 263 '[#section_count#]'); 264 265 $replace_values = array(entities::safexml($course_title), 266 entities::safexml($course_short_name), 267 entities::safexml($course_description), 268 time(), 269 $section_count); 270 271 $node_course_header = str_replace($find_tags, $replace_values, $sheet_course_header); 272 273 return $node_course_header; 274 } 275 276 protected function create_node_question_categories () { 277 278 $quiz = new cc_quiz(); 279 280 static::log_action('Creating node: QUESTION_CATEGORIES'); 281 282 $node_course_question_categories = $quiz->generate_node_question_categories(); 283 284 return $node_course_question_categories; 285 } 286 287 protected function create_node_course_modules_mod () { 288 289 $labels = new cc_label(); 290 $resources = new cc_resource(); 291 $forums = new cc_forum(); 292 $quiz = new cc_quiz(); 293 294 static::log_action('Creating node: COURSE/MODULES/MOD'); 295 296 // LABELS 297 $node_course_modules_mod_label = $labels->generate_node(); 298 299 // RESOURCES (WEB CONTENT AND WEB LINK) 300 $node_course_modules_mod_resource = $resources->generate_node(); 301 302 // FORUMS 303 $node_course_modules_mod_forum = $forums->generate_node(); 304 305 // QUIZ 306 $node_course_modules_mod_quiz = $quiz->generate_node_course_modules_mod(); 307 //TODO: label 308 $node_course_modules = $node_course_modules_mod_label . $node_course_modules_mod_resource . $node_course_modules_mod_forum . $node_course_modules_mod_quiz; 309 310 return $node_course_modules; 311 } 312 313 314 protected function create_node_course_sections_section () { 315 316 static::log_action('Creating node: COURSE/SECTIONS/SECTION'); 317 318 $node_course_sections_section = ''; 319 $sheet_course_sections_section = static::loadsheet(SHEET_COURSE_SECTIONS_SECTION); 320 321 $topics = $this->get_nodes_by_criteria('deep', ROOT_DEEP); 322 323 $i = 0; 324 325 if (!empty($topics)) { 326 327 foreach ($topics as $topic) { 328 329 $i++; 330 $node_node_course_sections_section_mods_mod = $this->create_node_course_sections_section_mods_mod($topic['index']); 331 332 if ($topic['moodle_type'] == MOODLE_TYPE_LABEL) { 333 334 $find_tags = array('[#section_id#]', 335 '[#section_number#]', 336 '[#section_summary#]', 337 '[#node_course_sections_section_mods_mod#]'); 338 339 $replace_values = array($i, 340 $i - 1, 341 entities::safexml($topic['title']), 342 $node_node_course_sections_section_mods_mod); 343 344 } else { 345 346 $find_tags = array('[#section_id#]', 347 '[#section_number#]', 348 '[#section_summary#]', 349 '[#node_course_sections_section_mods_mod#]'); 350 351 $replace_values = array($i, 352 $i - 1, 353 '', 354 $node_node_course_sections_section_mods_mod); 355 356 } 357 358 $node_course_sections_section .= str_replace($find_tags, $replace_values, $sheet_course_sections_section); 359 } 360 } 361 362 363 return $node_course_sections_section; 364 } 365 366 protected function create_node_course_blocks_block () { 367 368 global $CFG; 369 370 static::log_action('Creating node: COURSE/BLOCKS/BLOCK'); 371 372 $sheet_course_blocks_block = static::loadsheet(SHEET_COURSE_BLOCKS_BLOCK); 373 $node_course_blocks_block = ''; 374 375 $format_config = $CFG->dirroot . '/course/format/weeks/config.php'; 376 377 if (@is_file($format_config) && is_readable($format_config)) { 378 require ($format_config); 379 } 380 381 if (!empty($format['defaultblocks'])) { 382 $blocknames = $format['defaultblocks']; 383 } else { 384 if (isset($CFG->defaultblocks)) { 385 $blocknames = $CFG->defaultblocks; 386 } else { 387 $blocknames = 'activity_modules,search_forums,course_list:news_items,calendar_upcoming,recent_activity'; 388 } 389 } 390 391 $blocknames = explode(':', $blocknames); 392 $blocks_left = explode(',', $blocknames[0]); 393 $blocks_right = explode(',', $blocknames[1]); 394 395 $find_tags = array('[#block_id#]', 396 '[#block_name#]', 397 '[#block_position#]', 398 '[#block_weight#]'); 399 400 $i = 0; 401 $weight = 0; 402 403 foreach ($blocks_left as $block) { 404 $i++; 405 $weight++; 406 407 $replace_values = array($i, 408 $block, 409 'l', 410 $weight); 411 412 $node_course_blocks_block .= str_replace($find_tags, $replace_values, $sheet_course_blocks_block); 413 } 414 415 $weight = 0; 416 417 foreach ($blocks_right as $block) { 418 419 $i++; 420 $weight ++; 421 422 $replace_values = array($i, 423 $block, 424 'r', 425 $weight); 426 427 $node_course_blocks_block .= str_replace($find_tags, $replace_values, $sheet_course_blocks_block); 428 } 429 430 return $node_course_blocks_block; 431 432 } 433 434 /** 435 * 436 * Is activity visible or not 437 * @param string $identifier 438 * @return number 439 */ 440 protected function get_module_visible($identifier) { 441 //Should item be hidden or not 442 $mod_visible = 1; 443 if (!empty($identifier)) { 444 $xpath = static::newx_path(static::$manifest, static::$namespaces); 445 $query = '/imscc:manifest/imscc:resources/imscc:resource[@identifier="' . $identifier . '"]'; 446 $query .= '//lom:intendedEndUserRole/voc:vocabulary/lom:value'; 447 $intendeduserrole = $xpath->query($query); 448 if (!empty($intendeduserrole) && ($intendeduserrole->length > 0)) { 449 $role = trim($intendeduserrole->item(0)->nodeValue); 450 if (strcasecmp('Instructor', $role) == 0) { 451 $mod_visible = 0; 452 } 453 } 454 } 455 return $mod_visible; 456 } 457 458 protected function create_node_course_sections_section_mods_mod ($root_parent) { 459 460 $sheet_course_sections_section_mods_mod = static::loadsheet(SHEET_COURSE_SECTIONS_SECTION_MODS_MOD); 461 $childs = $this->get_nodes_by_criteria('root_parent', $root_parent); 462 463 if ($childs) { 464 465 $node_course_sections_section_mods_mod = ''; 466 467 foreach ($childs as $child) { 468 469 if ($child['moodle_type'] == MOODLE_TYPE_LABEL) { 470 if ($child['index'] == $child['root_parent']) { 471 $is_summary = true; 472 } else { 473 $is_summary = false; 474 } 475 } else { 476 $is_summary = false; 477 } 478 479 if (!$is_summary) { 480 481 $indent = $child['deep'] - ROOT_DEEP; 482 483 if ($indent > 0) { 484 $indent = $indent - 1; 485 } 486 487 $find_tags = array('[#mod_id#]', 488 '[#mod_instance_id#]', 489 '[#mod_type#]', 490 '[#date_now#]', 491 '[#mod_indent#]', 492 '[#mod_visible#]'); 493 494 $replace_values = array($child['index'], 495 $child['instance'], 496 $child['moodle_type'], 497 time(), 498 $indent, 499 $this->get_module_visible($child['resource_indentifier'])); 500 501 $node_course_sections_section_mods_mod .= str_replace($find_tags, $replace_values, $sheet_course_sections_section_mods_mod); 502 } 503 } 504 505 $response = $node_course_sections_section_mods_mod; 506 507 } else { 508 $response = ''; 509 } 510 511 return $response; 512 513 } 514 515 public function get_nodes_by_criteria ($key, $value) { 516 517 $response = array(); 518 519 if (array_key_exists('index', static::$instances)) { 520 foreach (static::$instances['index'] as $item) { 521 if ($item[$key] == $value) { 522 $response[] = $item; 523 } 524 } 525 } 526 527 return $response; 528 } 529 530 //Modified here 531 protected function create_code_info_details_mod () { 532 533 static::log_action('Creating node: INFO/DETAILS/MOD'); 534 535 $xpath = static::newx_path(static::$manifest, static::$namespaces); 536 537 $items = $xpath->query('/imscc:manifest/imscc:organizations/imscc:organization/imscc:item | /imscc:manifest/imscc:resources/imscc:resource[@type="' . static::CC_TYPE_QUESTION_BANK . '"]'); 538 539 $this->create_instances($items); 540 541 $count_quiz = $this->count_instances(MOODLE_TYPE_QUIZ); 542 $count_forum = $this->count_instances(MOODLE_TYPE_FORUM); 543 $count_resource = $this->count_instances(MOODLE_TYPE_RESOURCE); 544 $count_label = $this->count_instances(MOODLE_TYPE_LABEL); 545 546 $sheet_info_details_mod_instances_instance = static::loadsheet(SHEET_INFO_DETAILS_MOD_INSTANCE); 547 548 if ($count_resource > 0) { 549 $resource_instance = $this->create_mod_info_details_mod_instances_instance($sheet_info_details_mod_instances_instance, $count_resource, static::$instances['instances'][MOODLE_TYPE_RESOURCE]); 550 } 551 if ($count_quiz > 0) { 552 $quiz_instance = $this->create_mod_info_details_mod_instances_instance($sheet_info_details_mod_instances_instance, $count_quiz, static::$instances['instances'][MOODLE_TYPE_QUIZ]); 553 } 554 if ($count_forum > 0) { 555 $forum_instance = $this->create_mod_info_details_mod_instances_instance($sheet_info_details_mod_instances_instance, $count_forum, static::$instances['instances'][MOODLE_TYPE_FORUM]); 556 } 557 if ($count_label > 0) { 558 $label_instance = $this->create_mod_info_details_mod_instances_instance($sheet_info_details_mod_instances_instance, $count_label, static::$instances['instances'][MOODLE_TYPE_LABEL]); 559 } 560 561 $resource_mod = $count_resource ? $this->create_mod_info_details_mod(MOODLE_TYPE_RESOURCE, $resource_instance) : ''; 562 $quiz_mod = $count_quiz ? $this->create_mod_info_details_mod(MOODLE_TYPE_QUIZ, $quiz_instance) : ''; 563 $forum_mod = $count_forum ? $this->create_mod_info_details_mod(MOODLE_TYPE_FORUM, $forum_instance) : ''; 564 $label_mod = $count_label ? $this->create_mod_info_details_mod(MOODLE_TYPE_LABEL, $label_instance) : ''; 565 566 //TODO: label 567 return $label_mod . $resource_mod . $quiz_mod . $forum_mod; 568 569 } 570 571 protected function create_mod_info_details_mod ($mod_type, $node_info_details_mod_instances_instance) { 572 573 $sheet_info_details_mod = static::loadsheet(SHEET_INFO_DETAILS_MOD); 574 575 $find_tags = array('[#mod_type#]' ,'[#node_info_details_mod_instances_instance#]'); 576 $replace_values = array($mod_type , $node_info_details_mod_instances_instance); 577 578 return str_replace($find_tags, $replace_values, $sheet_info_details_mod); 579 } 580 581 protected function create_mod_info_details_mod_instances_instance ($sheet, $instances_quantity, $instances) { 582 583 $instance = ''; 584 585 $find_tags = array('[#mod_instance_id#]', 586 '[#mod_name#]', 587 '[#mod_user_info#]'); 588 589 for ($i = 1; $i <= $instances_quantity; $i++) { 590 591 $user_info = ($instances[$i - 1]['common_cartriedge_type'] == static::CC_TYPE_FORUM) ? 'true' : 'false'; 592 if ($instances[$i - 1]['common_cartriedge_type'] == static::CC_TYPE_EMPTY) { 593 if ($instances[$i - 1]['deep'] <= ROOT_DEEP ) { 594 continue; 595 } 596 } 597 598 $replace_values = array($instances[$i - 1]['instance'], 599 entities::safexml($instances[$i - 1]['title']), 600 $user_info); 601 602 $instance .= str_replace($find_tags, $replace_values, $sheet); 603 } 604 605 return $instance; 606 607 } 608 609 protected function create_instances ($items, $level = 0, &$array_index = 0, $index_root = 0) { 610 611 $level++; 612 $i = 1; 613 614 if ($items) { 615 616 $xpath = self::newx_path(static::$manifest, static::$namespaces); 617 618 foreach ($items as $item) { 619 620 $array_index++; 621 622 if ($item->nodeName == "item") { 623 $identifierref = ''; 624 if ($item->hasAttribute('identifierref')) { 625 $identifierref = $item->getAttribute('identifierref'); 626 } 627 628 $title = ''; 629 $titles = $xpath->query('imscc:title', $item); 630 if ($titles->length > 0) { 631 $title = $titles->item(0)->nodeValue; 632 } 633 634 $cc_type = $this->get_item_cc_type($identifierref); 635 $moodle_type = $this->convert_to_moodle_type($cc_type); 636 //Fix the label issue - MDL-33523 637 if (empty($identifierref) && empty($title)) { 638 $moodle_type = TYPE_UNKNOWN; 639 } 640 } 641 elseif ($item->nodeName == "resource") { 642 643 $identifierref = $xpath->query('@identifier', $item); 644 $identifierref = !empty($identifierref->item(0)->nodeValue) ? $identifierref->item(0)->nodeValue : ''; 645 646 $cc_type = $this->get_item_cc_type($identifierref); 647 $moodle_type = $this->convert_to_moodle_type($cc_type); 648 649 $title = 'Quiz Bank ' . ($this->count_instances($moodle_type) + 1); 650 651 } 652 653 if ($level == ROOT_DEEP) { 654 $index_root = $array_index; 655 } 656 657 static::$instances['index'][$array_index]['common_cartriedge_type'] = $cc_type; 658 static::$instances['index'][$array_index]['moodle_type'] = $moodle_type; 659 static::$instances['index'][$array_index]['title'] = $title ? $title : ''; 660 static::$instances['index'][$array_index]['root_parent'] = $index_root; 661 static::$instances['index'][$array_index]['index'] = $array_index; 662 static::$instances['index'][$array_index]['deep'] = $level; 663 static::$instances['index'][$array_index]['instance'] = $this->count_instances($moodle_type); 664 static::$instances['index'][$array_index]['resource_indentifier'] = $identifierref; 665 666 static::$instances['instances'][$moodle_type][] = array('title' => $title, 667 'instance' => static::$instances['index'][$array_index]['instance'], 668 'common_cartriedge_type' => $cc_type, 669 'resource_indentifier' => $identifierref, 670 'deep' => $level); 671 672 $more_items = $xpath->query('imscc:item', $item); 673 674 if ($more_items->length > 0) { 675 $this->create_instances($more_items, $level, $array_index, $index_root); 676 } 677 678 $i++; 679 680 } 681 } 682 } 683 684 public function count_instances ($type) { 685 686 $quantity = 0; 687 688 if (array_key_exists('index', static::$instances)) { 689 if (static::$instances['index'] && $type) { 690 691 foreach (static::$instances['index'] as $instance) { 692 if (!empty($instance['moodle_type'])) { 693 $types[] = $instance['moodle_type']; 694 } 695 } 696 697 $quantity_instances = array_count_values($types); 698 $quantity = array_key_exists($type, $quantity_instances) ? $quantity_instances[$type] : 0; 699 } 700 } 701 702 return $quantity; 703 } 704 705 public function convert_to_moodle_type ($cc_type) { 706 $type = TYPE_UNKNOWN; 707 708 if ($cc_type == static::CC_TYPE_FORUM) { 709 $type = MOODLE_TYPE_FORUM; 710 } 711 712 if ($cc_type == static::CC_TYPE_QUIZ) { 713 $type = MOODLE_TYPE_QUIZ; 714 } 715 716 if ($cc_type == static::CC_TYPE_WEBLINK) { 717 $type = MOODLE_TYPE_RESOURCE; 718 } 719 720 if ($cc_type == static::CC_TYPE_WEBCONTENT) { 721 $type = MOODLE_TYPE_RESOURCE; 722 } 723 724 if ($cc_type == static::CC_TYPE_ASSOCIATED_CONTENT) { 725 $type = MOODLE_TYPE_RESOURCE; 726 } 727 728 if ($cc_type == static::CC_TYPE_QUESTION_BANK) { 729 $type = MOODLE_TYPE_QUESTION_BANK; 730 } 731 //TODO: label 732 if ($cc_type == static::CC_TYPE_EMPTY) { 733 $type = MOODLE_TYPE_LABEL; 734 } 735 736 return $type; 737 } 738 739 public function get_item_cc_type ($identifier) { 740 741 $xpath = static::newx_path(static::$manifest, static::$namespaces); 742 743 $nodes = $xpath->query('/imscc:manifest/imscc:resources/imscc:resource[@identifier="' . $identifier . '"]/@type'); 744 745 if ($nodes && !empty($nodes->item(0)->nodeValue)) { 746 return $nodes->item(0)->nodeValue; 747 } else { 748 return ''; 749 } 750 } 751 752 public static function newx_path (DOMDocument $manifest, $namespaces = '') { 753 754 $xpath = new DOMXPath($manifest); 755 756 if (!empty($namespaces)) { 757 foreach ($namespaces as $prefix => $ns) { 758 if (!$xpath->registerNamespace($prefix, $ns)) { 759 static::log_action('Cannot register the namespace: ' . $prefix . ':' . $ns, true); 760 } 761 } 762 } 763 764 return $xpath; 765 } 766 767 public static function loadsheet ($file) { 768 769 $content = (is_readable($file) && ($content = file_get_contents($file))) ? $content : false; 770 771 static::log_action('Loading sheet: ' . $file); 772 773 if (!$content) { 774 static::log_action('Cannot load the xml sheet: ' . $file, true); 775 } 776 777 static::log_action('Load OK!'); 778 779 return $content; 780 } 781 782 public static function log_file() { 783 return static::$path_to_manifest_folder . DIRECTORY_SEPARATOR . 'cc2moodle.log'; 784 } 785 786 public static function log_action ($text, $critical_error = false) { 787 788 $full_message = strtoupper(date("j/n/Y g:i:s a")) . " - " . $text . "\r"; 789 790 file_put_contents(static::log_file(), $full_message, FILE_APPEND); 791 792 if ($critical_error) { 793 static::critical_error($text); 794 } 795 } 796 797 protected static function critical_error ($text) { 798 799 $path_to_log = static::log_file(); 800 801 echo ' 802 803 <p> 804 <hr />A critical error has been found! 805 806 <p>' . $text . '</p> 807 808 809 <p> 810 The process has been stopped. Please see the <a href="' . $path_to_log . '">log file</a> for more information.</p> 811 812 <p>Log: ' . $path_to_log . '</p> 813 814 <hr /> 815 816 </p> 817 '; 818 819 die(); 820 } 821 822 protected function create_course_code ($title) { 823 //Making sure that text of the short name does not go over the DB limit. 824 //and leaving the space to add additional characters by the platform 825 $code = substr(strtoupper(str_replace(' ', '', trim($title))),0,94); 826 return $code; 827 } 828 }
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