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MDL-30576, Fixing cmi.completion_threshold and default value of minProgressMeasure...
[moodle.git] / mod / scorm / datamodels / scormlib.php
CommitLineData
dc383b6f 1<?php
f7b5c6aa
DM		 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
dc383b6f 17function scorm_get_resources($blocks) {
18 $resources = array();
19 foreach ($blocks as $block) {
03c34889 20 if ($block['name'] == 'RESOURCES' && isset($block['children'])) {
dc383b6f 21 foreach ($block['children'] as $resource) {
22 if ($resource['name'] == 'RESOURCE') {
294ce987 23 $resources[addslashes_js($resource['attrs']['IDENTIFIER'])] = $resource['attrs'];
dc383b6f 24 }
25 }
26 }
27 }
28 return $resources;
29}
30
f7b5c6aa 31function scorm_get_manifest($blocks, $scoes) {
03c34889 32 global $OUTPUT;
dc383b6f 33 static $parents = array();
34 static $resources;
35
36 static $manifest;
37 static $organization;
38
03c34889 39 $manifestresourcesnotfound = array();
dc383b6f 40 if (count($blocks) > 0) {
41 foreach ($blocks as $block) {
42 switch ($block['name']) {
43 case 'METADATA':
44 if (isset($block['children'])) {
45 foreach ($block['children'] as $metadata) {
46 if ($metadata['name'] == 'SCHEMAVERSION') {
47 if (empty($scoes->version)) {
f7b5c6aa 48 if (isset($metadata['tagData']) && (preg_match("/^(1\.2)$|^(CAM )?(1\.3)$/", $metadata['tagData'], $matches))) {
dc383b6f 49 $scoes->version = 'SCORM_'.$matches[count($matches)-1];
50 } else {
f7b5c6aa 51 if (isset($metadata['tagData']) && (preg_match("/^2004 (3rd|4th) Edition$/", $metadata['tagData'], $matches))) {
d11b69ff 52 $scoes->version = 'SCORM_1.3';
53 } else {
54 $scoes->version = 'SCORM_1.2';
55 }
dc383b6f 56 }
57 }
58 }
59 }
60 }
61 break;
62 case 'MANIFEST':
294ce987 63 $manifest = $block['attrs']['IDENTIFIER'];
dc383b6f 64 $organization = '';
65 $resources = array();
66 $resources = scorm_get_resources($block['children']);
f7b5c6aa 67 $scoes = scorm_get_manifest($block['children'], $scoes);
36149cf0 68 if (empty($scoes->elements) || count($scoes->elements) <= 0) {
dc383b6f 69 foreach ($resources as $item => $resource) {
70 if (!empty($resource['HREF'])) {
71 $sco = new stdClass();
72 $sco->identifier = $item;
73 $sco->title = $item;
74 $sco->parent = '/';
294ce987 75 $sco->launch = $resource['HREF'];
76 $sco->scormtype = $resource['ADLCP:SCORMTYPE'];
dc383b6f 77 $scoes->elements[$manifest][$organization][$item] = $sco;
78 }
79 }
80 }
81 break;
82 case 'ORGANIZATIONS':
ef7f7453 83 if (!isset($scoes->defaultorg) && isset($block['attrs']['DEFAULT'])) {
294ce987 84 $scoes->defaultorg = $block['attrs']['DEFAULT'];
dc383b6f 85 }
36149cf0 86 if (!empty($block['children'])) {
f7b5c6aa 87 $scoes = scorm_get_manifest($block['children'], $scoes);
36149cf0 88 }
dc383b6f 89 break;
90 case 'ORGANIZATION':
294ce987 91 $identifier = $block['attrs']['IDENTIFIER'];
dc383b6f 92 $organization = '';
93 $scoes->elements[$manifest][$organization][$identifier]->identifier = $identifier;
94 $scoes->elements[$manifest][$organization][$identifier]->parent = '/';
95 $scoes->elements[$manifest][$organization][$identifier]->launch = '';
96 $scoes->elements[$manifest][$organization][$identifier]->scormtype = '';
97
98 $parents = array();
99 $parent = new stdClass();
100 $parent->identifier = $identifier;
101 $parent->organization = $organization;
102 array_push($parents, $parent);
103 $organization = $identifier;
104
36149cf0 105 if (!empty($block['children'])) {
f7b5c6aa 106 $scoes = scorm_get_manifest($block['children'], $scoes);
36149cf0 107 }
309ee089 108
dc383b6f 109 array_pop($parents);
110 break;
111 case 'ITEM':
112 $parent = array_pop($parents);
113 array_push($parents, $parent);
114
294ce987 115 $identifier = $block['attrs']['IDENTIFIER'];
dc383b6f 116 $scoes->elements[$manifest][$organization][$identifier]->identifier = $identifier;
117 $scoes->elements[$manifest][$organization][$identifier]->parent = $parent->identifier;
118 if (!isset($block['attrs']['ISVISIBLE'])) {
119 $block['attrs']['ISVISIBLE'] = 'true';
120 }
294ce987 121 $scoes->elements[$manifest][$organization][$identifier]->isvisible = $block['attrs']['ISVISIBLE'];
dc383b6f 122 if (!isset($block['attrs']['PARAMETERS'])) {
123 $block['attrs']['PARAMETERS'] = '';
124 }
294ce987 125 $scoes->elements[$manifest][$organization][$identifier]->parameters = $block['attrs']['PARAMETERS'];
dc383b6f 126 if (!isset($block['attrs']['IDENTIFIERREF'])) {
127 $scoes->elements[$manifest][$organization][$identifier]->launch = '';
128 $scoes->elements[$manifest][$organization][$identifier]->scormtype = 'asset';
129 } else {
294ce987 130 $idref = $block['attrs']['IDENTIFIERREF'];
dc383b6f 131 $base = '';
132 if (isset($resources[$idref]['XML:BASE'])) {
133 $base = $resources[$idref]['XML:BASE'];
134 }
03c34889
DM		 135 if (!isset($resources[$idref])) {
136 $manifestresourcesnotfound[] = $idref;
137 $scoes->elements[$manifest][$organization][$identifier]->launch = '';
138 } else {
139 $scoes->elements[$manifest][$organization][$identifier]->launch = $base.$resources[$idref]['HREF'];
140 if (empty($resources[$idref]['ADLCP:SCORMTYPE'])) {
141 $resources[$idref]['ADLCP:SCORMTYPE'] = 'asset';
142 }
143 $scoes->elements[$manifest][$organization][$identifier]->scormtype = $resources[$idref]['ADLCP:SCORMTYPE'];
dc383b6f 144 }
dc383b6f 145 }
146
147 $parent = new stdClass();
148 $parent->identifier = $identifier;
149 $parent->organization = $organization;
150 array_push($parents, $parent);
151
36149cf0 152 if (!empty($block['children'])) {
f7b5c6aa 153 $scoes = scorm_get_manifest($block['children'], $scoes);
36149cf0 154 }
309ee089 155
dc383b6f 156 array_pop($parents);
157 break;
158 case 'TITLE':
159 $parent = array_pop($parents);
160 array_push($parents, $parent);
161 if (!isset($block['tagData'])) {
162 $block['tagData'] = '';
163 }
294ce987 164 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->title = $block['tagData'];
dc383b6f 165 break;
166 case 'ADLCP:PREREQUISITES':
167 if ($block['attrs']['TYPE'] == 'aicc_script') {
168 $parent = array_pop($parents);
169 array_push($parents, $parent);
170 if (!isset($block['tagData'])) {
171 $block['tagData'] = '';
172 }
294ce987 173 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->prerequisites = $block['tagData'];
dc383b6f 174 }
175 break;
176 case 'ADLCP:MAXTIMEALLOWED':
177 $parent = array_pop($parents);
178 array_push($parents, $parent);
179 if (!isset($block['tagData'])) {
180 $block['tagData'] = '';
181 }
294ce987 182 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->maxtimeallowed = $block['tagData'];
dc383b6f 183 break;
184 case 'ADLCP:TIMELIMITACTION':
185 $parent = array_pop($parents);
186 array_push($parents, $parent);
187 if (!isset($block['tagData'])) {
188 $block['tagData'] = '';
189 }
294ce987 190 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->timelimitaction = $block['tagData'];
dc383b6f 191 break;
192 case 'ADLCP:DATAFROMLMS':
193 $parent = array_pop($parents);
194 array_push($parents, $parent);
195 if (!isset($block['tagData'])) {
196 $block['tagData'] = '';
197 }
294ce987 198 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->datafromlms = $block['tagData'];
dc383b6f 199 break;
200 case 'ADLCP:MASTERYSCORE':
201 $parent = array_pop($parents);
202 array_push($parents, $parent);
203 if (!isset($block['tagData'])) {
204 $block['tagData'] = '';
205 }
294ce987 206 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->masteryscore = $block['tagData'];
dc383b6f 207 break;
b3659259 208 case 'ADLCP:COMPLETIONTHRESHOLD':
209 $parent = array_pop($parents);
210 array_push($parents, $parent);
b5a26fe1
MG		 211 if (!isset($block['attrs']['MINPROGRESSMEASURE'])) {
212 $block['attrs']['MINPROGRESSMEASURE'] = '1.0';
b3659259 213 }
b5a26fe1 214 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->threshold = $block['attrs']['MINPROGRESSMEASURE'];
b3659259 215 break;
216 case 'ADLNAV:PRESENTATION':
217 $parent = array_pop($parents);
218 array_push($parents, $parent);
33b6a8f4 219 if (!empty($block['children'])) {
220 foreach ($block['children'] as $adlnav) {
221 if ($adlnav['name'] == 'ADLNAV:NAVIGATIONINTERFACE') {
222 foreach ($adlnav['children'] as $adlnavInterface) {
223 if ($adlnavInterface['name'] == 'ADLNAV:HIDELMSUI') {
224 if ($adlnavInterface['tagData'] == 'continue') {
309ee089 225 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->hidecontinue = 1;
33b6a8f4 226 }
227 if ($adlnavInterface['tagData'] == 'previous') {
309ee089 228 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->hideprevious = 1;
33b6a8f4 229 }
230 if ($adlnavInterface['tagData'] == 'exit') {
309ee089 231 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->hideexit = 1;
33b6a8f4 232 }
233 if ($adlnavInterface['tagData'] == 'exitAll') {
309ee089 234 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->hideexitall = 1;
33b6a8f4 235 }
236 if ($adlnavInterface['tagData'] == 'abandon') {
309ee089 237 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->hideabandon = 1;
33b6a8f4 238 }
239 if ($adlnavInterface['tagData'] == 'abandonAll') {
309ee089 240 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->hideabandonall = 1;
33b6a8f4 241 }
242 if ($adlnavInterface['tagData'] == 'suspendAll') {
309ee089 243 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->hidesuspendall = 1;
33b6a8f4 244 }
b3659259 245 }
33b6a8f4 246 }
247 }
248 }
249 }
250 break;
251 case 'IMSSS:SEQUENCING':
252 $parent = array_pop($parents);
253 array_push($parents, $parent);
254 if (!empty($block['children'])) {
255 foreach ($block['children'] as $sequencing) {
256 if ($sequencing['name']=='IMSSS:CONTROLMODE') {
257 if (isset($sequencing['attrs']['CHOICE'])) {
258 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->choice = $sequencing['attrs']['CHOICE'] == 'true'?1:0;
259 }
260 if (isset($sequencing['attrs']['CHOICEEXIT'])) {
261 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->choiceexit = $sequencing['attrs']['CHOICEEXIT'] == 'true'?1:0;
262 }
263 if (isset($sequencing['attrs']['FLOW'])) {
264 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->flow = $sequencing['attrs']['FLOW'] == 'true'?1:0;
265 }
266 if (isset($sequencing['attrs']['FORWARDONLY'])) {
267 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->forwardonly = $sequencing['attrs']['FORWARDONLY'] == 'true'?1:0;
268 }
269 if (isset($sequencing['attrs']['USECURRENTATTEMPTOBJECTINFO'])) {
270 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->usecurrentattemptobjectinfo = $sequencing['attrs']['USECURRENTATTEMPTOBJECTINFO'] == 'true'?1:0;
271 }
272 if (isset($sequencing['attrs']['USECURRENTATTEMPTPROGRESSINFO'])) {
273 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->usecurrentattemptprogressinfo = $sequencing['attrs']['USECURRENTATTEMPTPROGRESSINFO'] == 'true'?1:0;
274 }
275 }
276 if ($sequencing['name']=='ADLSEQ:CONSTRAINEDCHOICECONSIDERATIONS') {
277 if (isset($sequencing['attrs']['CONSTRAINCHOICE'])) {
278 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->constrainChoice = $sequencing['attrs']['CONSTRAINCHOICE'] == 'true'?1:0;
279 }
280 if (isset($sequencing['attrs']['PREVENTACTIVATION'])) {
281 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->preventactivation = $sequencing['attrs']['PREVENTACTIVATION'] == 'true'?1:0;
282 }
283 }
284 if ($sequencing['name']=='IMSSS:OBJECTIVES') {
285 $objectives = array();
286 foreach ($sequencing['children'] as $objective) {
287 $objectivedata = new stdClass();
288 $objectivedata->primaryobj = 0;
289 switch ($objective['name']) {
290 case 'IMSSS:PRIMARYOBJECTIVE':
291 $objectivedata->primaryobj = 1;
292 case 'IMSSS:OBJECTIVE':
293 $objectivedata->satisfiedbymeasure = 0;
294 if (isset($objective['attrs']['SATISFIEDBYMEASURE'])) {
295 $objectivedata->satisfiedbymeasure = $objective['attrs']['SATISFIEDBYMEASURE']== 'true'?1:0;
296 }
297 $objectivedata->objectiveid = '';
298 if (isset($objective['attrs']['OBJECTIVEID'])) {
299 $objectivedata->objectiveid = $objective['attrs']['OBJECTIVEID'];
300 }
301 $objectivedata->minnormalizedmeasure = 1.0;
302 if (!empty($objective['children'])) {
303 $mapinfos = array();
304 foreach ($objective['children'] as $objectiveparam) {
305 if ($objectiveparam['name']=='IMSSS:MINNORMALIZEDMEASURE') {
7f4a3293 306 if (isset($objectiveparam['tagData'])) {
307 $objectivedata->minnormalizedmeasure = $objectiveparam['tagData'];
308 } else {
309 $objectivedata->minnormalizedmeasure = 0;
310 }
33b6a8f4 311 }
312 if ($objectiveparam['name']=='IMSSS:MAPINFO') {
313 $mapinfo = new stdClass();
314 $mapinfo->targetobjectiveid = '';
315 if (isset($objectiveparam['attrs']['TARGETOBJECTIVEID'])) {
316 $mapinfo->targetobjectiveid = $objectiveparam['attrs']['TARGETOBJECTIVEID'];
317 }
318 $mapinfo->readsatisfiedstatus = 1;
319 if (isset($objectiveparam['attrs']['READSATISFIEDSTATUS'])) {
320 $mapinfo->readsatisfiedstatus = $objectiveparam['attrs']['READSATISFIEDSTATUS'] == 'true'?1:0;
321 }
322 $mapinfo->writesatisfiedstatus = 0;
323 if (isset($objectiveparam['attrs']['WRITESATISFIEDSTATUS'])) {
324 $mapinfo->writesatisfiedstatus = $objectiveparam['attrs']['WRITESATISFIEDSTATUS'] == 'true'?1:0;
325 }
326 $mapinfo->readnormalizemeasure = 1;
327 if (isset($objectiveparam['attrs']['READNORMALIZEDMEASURE'])) {
328 $mapinfo->readnormalizemeasure = $objectiveparam['attrs']['READNORMALIZEDMEASURE'] == 'true'?1:0;
329 }
330 $mapinfo->writenormalizemeasure = 0;
331 if (isset($objectiveparam['attrs']['WRITENORMALIZEDMEASURE'])) {
332 $mapinfo->writenormalizemeasure = $objectiveparam['attrs']['WRITENORMALIZEDMEASURE'] == 'true'?1:0;
333 }
f7b5c6aa 334 array_push($mapinfos, $mapinfo);
33b6a8f4 335 }
336 }
337 if (!empty($mapinfos)) {
338 $objectivesdata->mapinfos = $mapinfos;
339 }
340 }
341 break;
b3659259 342 }
f7b5c6aa 343 array_push($objectives, $objectivedata);
33b6a8f4 344 }
345 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->objectives = $objectives;
346 }
347 if ($sequencing['name']=='IMSSS:LIMITCONDITIONS') {
348 if (isset($sequencing['attrs']['ATTEMPTLIMIT'])) {
309ee089 349 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->attemptLimit = $sequencing['attrs']['ATTEMPTLIMIT'];
33b6a8f4 350 }
351 if (isset($sequencing['attrs']['ATTEMPTABSOLUTEDURATIONLIMIT'])) {
309ee089 352 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->attemptAbsoluteDurationLimit = $sequencing['attrs']['ATTEMPTABSOLUTEDURATIONLIMIT'];
33b6a8f4 353 }
354 }
355 if ($sequencing['name']=='IMSSS:ROLLUPRULES') {
356 if (isset($sequencing['attrs']['ROLLUPOBJECTIVESATISFIED'])) {
357 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->rollupobjectivesatisfied = $sequencing['attrs']['ROLLUPOBJECTIVESATISFIED'] == 'true'?1:0;;
358 }
359 if (isset($sequencing['attrs']['ROLLUPPROGRESSCOMPLETION'])) {
309ee089 360 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->rollupprogresscompletion = $sequencing['attrs']['ROLLUPPROGRESSCOMPLETION'] == 'true'?1:0;
33b6a8f4 361 }
362 if (isset($sequencing['attrs']['OBJECTIVEMEASUREWEIGHT'])) {
309ee089 363 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->objectivemeasureweight = $sequencing['attrs']['OBJECTIVEMEASUREWEIGHT'];
33b6a8f4 364 }
309ee089 365
f7b5c6aa 366 if (!empty($sequencing['children'])) {
33b6a8f4 367 $rolluprules = array();
368 foreach ($sequencing['children'] as $sequencingrolluprule) {
369 if ($sequencingrolluprule['name']=='IMSSS:ROLLUPRULE' ) {
370 $rolluprule = new stdClass();
371 $rolluprule->childactivityset = 'all';
372 if (isset($sequencingrolluprule['attrs']['CHILDACTIVITYSET'])) {
373 $rolluprule->childactivityset = $sequencingrolluprule['attrs']['CHILDACTIVITYSET'];
374 }
375 $rolluprule->minimumcount = 0;
376 if (isset($sequencingrolluprule['attrs']['MINIMUMCOUNT'])) {
377 $rolluprule->minimumcount = $sequencingrolluprule['attrs']['MINIMUMCOUNT'];
378 }
379 $rolluprule->minimumpercent = 0.0000;
380 if (isset($sequencingrolluprule['attrs']['MINIMUMPERCENT'])) {
381 $rolluprule->minimumpercent = $sequencingrolluprule['attrs']['MINIMUMPERCENT'];
382 }
383 if (!empty($sequencingrolluprule['children'])) {
384 foreach ($sequencingrolluprule['children'] as $rolluproleconditions) {
385 if ($rolluproleconditions['name']=='IMSSS:ROLLUPCONDITIONS') {
386 $conditions = array();
387 $rolluprule->conditioncombination = 'all';
388 if (isset($rolluproleconditions['attrs']['CONDITIONCOMBINATION'])) {
389 $rolluprule->conditioncombination = $rolluproleconditions['attrs']['CONDITIONCOMBINATION'];
390 }
391 foreach ($rolluproleconditions['children'] as $rolluprulecondition) {
392 if ($rolluprulecondition['name']=='IMSSS:ROLLUPCONDITION') {
393 $condition = new stdClass();
394 if (isset($rolluprulecondition['attrs']['CONDITION'])) {
395 $condition->cond = $rolluprulecondition['attrs']['CONDITION'];
396 }
397 $condition->operator = 'noOp';
398 if (isset($rolluprulecondition['attrs']['OPERATOR'])) {
399 $condition->operator = $rolluprulecondition['attrs']['OPERATOR'];
400 }
f7b5c6aa 401 array_push($conditions, $condition);
33b6a8f4 402 }
403 }
404 $rolluprule->conditions = $conditions;
405 }
406 if ($rolluproleconditions['name']=='IMSSS:ROLLUPACTION') {
407 $rolluprule->rollupruleaction = $rolluproleconditions['attrs']['ACTION'];
408 }
409 }
410 }
411 array_push($rolluprules, $rolluprule);
412 }
413 }
414 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->rolluprules = $rolluprules;
415 }
416 }
309ee089 417
33b6a8f4 418 if ($sequencing['name']=='IMSSS:SEQUENCINGRULES') {
419 if (!empty($sequencing['children'])) {
420 $sequencingrules = array();
421 foreach ($sequencing['children'] as $conditionrules) {
422 $conditiontype = -1;
423 switch($conditionrules['name']) {
424 case 'IMSSS:PRECONDITIONRULE':
425 $conditiontype = 0;
426 break;
427 case 'IMSSS:POSTCONDITIONRULE':
428 $conditiontype = 1;
429 break;
430 case 'IMSSS:EXITCONDITIONRULE':
431 $conditiontype = 2;
432 break;
433 }
434 if (!empty($conditionrules['children'])) {
435 $sequencingrule = new stdClass();
436 foreach ($conditionrules['children'] as $conditionrule) {
437 if ($conditionrule['name']=='IMSSS:RULECONDITIONS') {
438 $ruleconditions = array();
439 $sequencingrule->conditioncombination = 'all';
440 if (isset($conditionrule['attrs']['CONDITIONCOMBINATION'])) {
441 $sequencingrule->conditioncombination = $conditionrule['attrs']['CONDITIONCOMBINATION'];
442 }
443 foreach ($conditionrule['children'] as $rulecondition) {
444 if ($rulecondition['name']=='IMSSS:RULECONDITION') {
445 $condition = new stdClass();
446 if (isset($rulecondition['attrs']['CONDITION'])) {
447 $condition->cond = $rulecondition['attrs']['CONDITION'];
448 }
449 $condition->operator = 'noOp';
450 if (isset($rulecondition['attrs']['OPERATOR'])) {
451 $condition->operator = $rulecondition['attrs']['OPERATOR'];
452 }
453 $condition->measurethreshold = 0.0000;
454 if (isset($rulecondition['attrs']['MEASURETHRESHOLD'])) {
455 $condition->measurethreshold = $rulecondition['attrs']['MEASURETHRESHOLD'];
456 }
457 $condition->referencedobjective = '';
458 if (isset($rulecondition['attrs']['REFERENCEDOBJECTIVE'])) {
459 $condition->referencedobjective = $rulecondition['attrs']['REFERENCEDOBJECTIVE'];
309ee089 460 }
f7b5c6aa 461 array_push($ruleconditions, $condition);
33b6a8f4 462 }
463 }
464 $sequencingrule->ruleconditions = $ruleconditions;
465 }
466 if ($conditionrule['name']=='IMSSS:RULEACTION') {
467 $sequencingrule->action = $conditionrule['attrs']['ACTION'];
468 }
469 $sequencingrule->type = $conditiontype;
470 }
f7b5c6aa 471 array_push($sequencingrules, $sequencingrule);
33b6a8f4 472 }
473 }
474 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->sequencingrules = $sequencingrules;
b3659259 475 }
b3659259 476 }
477 }
478 }
479 break;
dc383b6f 480 }
481 }
482 }
03c34889
DM		 483 if (!empty($manifestresourcesnotfound)) {
484 //throw warning to user to let them know manifest contains references to resources that don't appear to exist.
485 if (!defined('DEBUGGING_PRINTED')) { //prevent redirect and display warning
486 define('DEBUGGING_PRINTED', 1);
487 }
488 echo $OUTPUT->notification(get_string('invalidmanifestresource', 'scorm').' '. implode(', ',$manifestresourcesnotfound));
489 }
dc383b6f 490 return $scoes;
491}
492
9528568b 493function scorm_parse_scorm($scorm, $manifest) {
bf347041 494 global $CFG, $DB;
dc383b6f 495
9528568b 496 // load manifest into string
497 if ($manifest instanceof stored_file) {
498 $xmltext = $manifest->get_content();
499 } else {
f7b5c6aa 500 require_once("$CFG->libdir/filelib.php");
9528568b 501 $xmltext = download_file_content($manifest);
502 }
309ee089 503
9528568b 504 $launch = 0;
b3659259 505
9528568b 506 $pattern = '/&(?!\w{2,6};)/';
507 $replacement = '&amp;';
508 $xmltext = preg_replace($pattern, $replacement, $xmltext);
b3659259 509
9528568b 510 $objXML = new xml2Array();
511 $manifests = $objXML->parse($xmltext);
9528568b 512 $scoes = new stdClass();
513 $scoes->version = '';
f7b5c6aa 514 $scoes = scorm_get_manifest($manifests, $scoes);
9528568b 515 if (count($scoes->elements) > 0) {
516 $olditems = $DB->get_records('scorm_scoes', array('scorm'=>$scorm->id));
517 foreach ($scoes->elements as $manifest => $organizations) {
518 foreach ($organizations as $organization => $items) {
519 foreach ($items as $identifier => $item) {
520 // This new db mngt will support all SCORM future extensions
309ee089 521 $newitem = new stdClass();
9528568b 522 $newitem->scorm = $scorm->id;
523 $newitem->manifest = $manifest;
524 $newitem->organization = $organization;
525 $standarddatas = array('parent', 'identifier', 'launch', 'scormtype', 'title');
526 foreach ($standarddatas as $standarddata) {
527 if (isset($item->$standarddata)) {
528 $newitem->$standarddata = $item->$standarddata;
dc383b6f 529 }
9528568b 530 }
309ee089 531
9528568b 532 // Insert the new SCO, and retain the link between the old and new for later adjustment
f7b5c6aa
DM		 533 $id = $DB->insert_record('scorm_scoes', $newitem);
534 if (!empty($olditems) && ($olditemid = scorm_array_search('identifier', $newitem->identifier, $olditems))) {
9528568b 535 $olditems[$olditemid]->newid = $id;
536 }
309ee089 537
f7b5c6aa 538 if ($optionaldatas = scorm_optionals_data($item, $standarddatas)) {
9528568b 539 $data = new stdClass();
540 $data->scoid = $id;
541 foreach ($optionaldatas as $optionaldata) {
542 if (isset($item->$optionaldata)) {
543 $data->name = $optionaldata;
544 $data->value = $item->$optionaldata;
f7b5c6aa 545 $dataid = $DB->insert_record('scorm_scoes_data', $data);
dc383b6f 546 }
33b6a8f4 547 }
9528568b 548 }
dc383b6f 549
9528568b 550 if (isset($item->sequencingrules)) {
f7b5c6aa 551 foreach ($item->sequencingrules as $sequencingrule) {
9528568b 552 $rule = new stdClass();
553 $rule->scoid = $id;
554 $rule->ruletype = $sequencingrule->type;
555 $rule->conditioncombination = $sequencingrule->conditioncombination;
556 $rule->action = $sequencingrule->action;
f7b5c6aa 557 $ruleid = $DB->insert_record('scorm_seq_ruleconds', $rule);
9528568b 558 if (isset($sequencingrule->ruleconditions)) {
f7b5c6aa 559 foreach ($sequencingrule->ruleconditions as $rulecondition) {
9528568b 560 $rulecond = new stdClass();
561 $rulecond->scoid = $id;
562 $rulecond->ruleconditionsid = $ruleid;
563 $rulecond->referencedobjective = $rulecondition->referencedobjective;
564 $rulecond->measurethreshold = $rulecondition->measurethreshold;
565 $rulecond->cond = $rulecondition->cond;
f7b5c6aa 566 $rulecondid = $DB->insert_record('scorm_seq_rulecond', $rulecond);
33b6a8f4 567 }
9528568b 568 }
309ee089 569 }
9528568b 570 }
309ee089 571
9528568b 572 if (isset($item->rolluprules)) {
f7b5c6aa 573 foreach ($item->rolluprules as $rolluprule) {
9528568b 574 $rollup = new stdClass();
575 $rollup->scoid = $id;
576 $rollup->childactivityset = $rolluprule->childactivityset;
577 $rollup->minimumcount = $rolluprule->minimumcount;
578 $rollup->minimumpercent = $rolluprule->minimumpercent;
579 $rollup->rollupruleaction = $rolluprule->rollupruleaction;
580 $rollup->conditioncombination = $rolluprule->conditioncombination;
33b6a8f4 581
f7b5c6aa 582 $rollupruleid = $DB->insert_record('scorm_seq_rolluprule', $rollup);
9528568b 583 if (isset($rollup->conditions)) {
f7b5c6aa 584 foreach ($rollup->conditions as $condition) {
9528568b 585 $cond = new stdClass();
586 $cond->scoid = $rollup->scoid;
587 $cond->rollupruleid = $rollupruleid;
588 $cond->operator = $condition->operator;
589 $cond->cond = $condition->cond;
f7b5c6aa 590 $conditionid = $DB->insert_record('scorm_seq_rolluprulecond', $cond);
33b6a8f4 591 }
9528568b 592 }
309ee089 593 }
9528568b 594 }
33b6a8f4 595
9528568b 596 if (isset($item->objectives)) {
f7b5c6aa 597 foreach ($item->objectives as $objective) {
9528568b 598 $obj = new stdClass();
599 $obj->scoid = $id;
600 $obj->primaryobj = $objective->primaryobj;
601 $obj->satisfiedbumeasure = $objective->satisfiedbymeasure;
602 $obj->objectiveid = $objective->objectiveid;
45999e78 603 $obj->minnormalizedmeasure = trim($objective->minnormalizedmeasure);
f7b5c6aa 604 $objectiveid = $DB->insert_record('scorm_seq_objective', $obj);
9528568b 605 if (isset($objective->mapinfos)) {
f7b5c6aa 606 foreach ($objective->mapinfos as $objmapinfo) {
9528568b 607 $mapinfo = new stdClass();
608 $mapinfo->scoid = $id;
609 $mapinfo->objectiveid = $objectiveid;
610 $mapinfo->targetobjectiveid = $objmapinfo->targetobjectiveid;
611 $mapinfo->readsatisfiedstatus = $objmapinfo->readsatisfiedstatus;
612 $mapinfo->writesatisfiedstatus = $objmapinfo->writesatisfiedstatus;
613 $mapinfo->readnormalizedmeasure = $objmapinfo->readnormalizedmeasure;
614 $mapinfo->writenormalizedmeasure = $objmapinfo->writenormalizedmeasure;
f7b5c6aa 615 $mapinfoid = $DB->insert_record('scorm_seq_mapinfo', $mapinfo);
33b6a8f4 616 }
617 }
618 }
9528568b 619 }
9528568b 620 if (($launch == 0) && ((empty($scoes->defaultorg)) || ($scoes->defaultorg == $identifier))) {
621 $launch = $id;
dc383b6f 622 }
623 }
624 }
9528568b 625 }
626 if (!empty($olditems)) {
f7b5c6aa 627 foreach ($olditems as $olditem) {
9528568b 628 $DB->delete_records('scorm_scoes', array('id'=>$olditem->id));
f7b5c6aa 629 $DB->delete_records('scorm_scoes_data', array('scoid'=>$olditem->id));
9528568b 630 if (isset($olditem->newid)) {
631 $DB->set_field('scorm_scoes_track', 'scoid', $olditem->newid, array('scoid' => $olditem->id));
dc383b6f 632 }
f7b5c6aa 633 $DB->delete_records('scorm_scoes_track', array('scoid'=>$olditem->id));
9528568b 634 $DB->delete_records('scorm_seq_objective', array('scoid'=>$olditem->id));
635 $DB->delete_records('scorm_seq_mapinfo', array('scoid'=>$olditem->id));
636 $DB->delete_records('scorm_seq_ruleconds', array('scoid'=>$olditem->id));
637 $DB->delete_records('scorm_seq_rulecond', array('scoid'=>$olditem->id));
638 $DB->delete_records('scorm_seq_rolluprule', array('scoid'=>$olditem->id));
639 $DB->delete_records('scorm_seq_rolluprulecond', array('scoid'=>$olditem->id));
dc383b6f 640 }
dc383b6f 641 }
309ee089 642 if (empty($scoes->version)) {
643 $scoes->version = 'SCORM_1.2';
644 }
f7b5c6aa 645 $DB->set_field('scorm', 'version', $scoes->version, array('id'=>$scorm->id));
9528568b 646 $scorm->version = $scoes->version;
647 }
309ee089 648
9528568b 649 $scorm->launch = $launch;
650
651 return true;
dc383b6f 652}
653
b3659259 654function scorm_optionals_data($item, $standarddata) {
655 $result = array();
f7b5c6aa 656 $sequencingdata = array('sequencingrules', 'rolluprules', 'objectives');
b3659259 657 foreach ($item as $element => $value) {
658 if (! in_array($element, $standarddata)) {
33b6a8f4 659 if (! in_array($element, $sequencingdata)) {
660 $result[] = $element;
661 }
b3659259 662 }
663 }
664 return $result;
665}
666
10fd330f 667function scorm_is_leaf($sco) {
bf347041 668 global $DB;
669
670 if ($DB->get_record('scorm_scoes', array('scorm'=>$sco->scorm, 'parent'=>$sco->identifier))) {
10fd330f 671 return false;
672 }
673 return true;
674}
675
676function scorm_get_parent($sco) {
bf347041 677 global $DB;
309ee089 678
10fd330f 679 if ($sco->parent != '/') {
f7b5c6aa 680 if ($parent = $DB->get_record('scorm_scoes', array('scorm'=>$sco->scorm, 'identifier'=>$sco->parent))) {
10fd330f 681 return scorm_get_sco($parent->id);
682 }
683 }
684 return null;
685}
686
687function scorm_get_children($sco) {
bf347041 688 global $DB;
689
f7b5c6aa 690 if ($children = $DB->get_records('scorm_scoes', array('scorm'=>$sco->scorm, 'parent'=>$sco->identifier))) {//originally this said parent instead of childrean
10fd330f 691 return $children;
692 }
693 return null;
694}
695
f7b5c6aa 696function scorm_get_available_children($sco) { // TODO: undefined vars!!!
bf347041 697 global $DB;
698
f7b5c6aa
DM		 699 $res = $DB->get_record('scorm_scoes_track', array('scoid'=>$scoid,
700 'userid'=>$userid,
701 'element'=>'availablechildren'));
702 if (!$res || $res == null) {
a9d71982 703 return false;
f7b5c6aa 704 } else {
a9d71982 705 return unserialize($res->value);
706 }
60a3aaf9 707}
708
f7b5c6aa
DM		 709function scorm_get_available_descendent($descend = array(), $sco) {
710 if ($sco == null) {
a9d71982 711 return $descend;
f7b5c6aa 712 } else {
a9d71982 713 $avchildren = scorm_get_available_children($sco);
f7b5c6aa
DM		 714 foreach ($avchildren as $avchild) {
715 array_push($descend, $avchild);
a9d71982 716 }
f7b5c6aa
DM		 717 foreach ($avchildren as $avchild) {
718 scorm_get_available_descendent($descend, $avchild);
a9d71982 719 }
720 }
60a3aaf9 721}
722
723function scorm_get_siblings($sco) {
bf347041 724 global $DB;
725
f7b5c6aa 726 if ($siblings = $DB->get_records('scorm_scoes', array('scorm'=>$sco->scorm, 'parent'=>$sco->parent))) {
10fd330f 727 unset($siblings[$sco->id]);
728 if (!empty($siblings)) {
729 return $siblings;
730 }
731 }
732 return null;
733}
c5a51ed5 734//get an array that contains all the parent scos for this sco.
10fd330f 735function scorm_get_ancestors($sco) {
c5a51ed5
DM		 736 $ancestors = array();
737 $continue = true;
f7b5c6aa 738 while ($continue) {
c5a51ed5
DM		 739 $ancestor = scorm_get_parent($sco);
740 if (!empty($ancestor) && $ancestor->id !== $sco->id) {
741 $sco = $ancestor;
742 $ancestors[] = $ancestor;
743 if ($sco->parent == '/') {
744 $continue = false;
745 }
746 } else {
747 $continue = false;
748 }
10fd330f 749 }
c5a51ed5 750 return $ancestors;
10fd330f 751}
752
f7b5c6aa 753function scorm_get_preorder($preorder=array(), $sco) {
60a3aaf9 754 if ($sco != null) {
f7b5c6aa 755 array_push($preorder, $sco);
a9d71982 756 $children = scorm_get_children($sco);
f7b5c6aa 757 foreach ($children as $child) {
a9d71982 758 scorm_get_preorder($sco);
759 }
60a3aaf9 760 } else {
761 return $preorder;
762 }
763}
764
10fd330f 765function scorm_find_common_ancestor($ancestors, $sco) {
f7b5c6aa 766 $pos = scorm_array_search('identifier', $sco->parent, $ancestors);
10fd330f 767 if ($sco->parent != '/') {
768 if ($pos === false) {
f7b5c6aa 769 return scorm_find_common_ancestor($ancestors, scorm_get_parent($sco));
10fd330f 770 }
771 }
772 return $pos;
773}
774
dc383b6f 775/* Usage
776 Grab some XML data, either from a file, URL, etc. however you want. Assume storage in $strYourXML;
777
778 $objXML = new xml2Array();
779 $arrOutput = $objXML->parse($strYourXML);
780 print_r($arrOutput); //print it out, or do whatever!
309ee089 781
dc383b6f 782*/
783class xml2Array {
309ee089 784
f7b5c6aa
DM		 785 var $arrOutput = array();
786 var $resParser;
787 var $strXmlData;
788
789 /**
790 * Convert a utf-8 string to html entities
791 *
792 * @param string $str The UTF-8 string
793 * @return string
794 */
795 function utf8_to_entities($str) {
796 global $CFG;
797
798 $entities = '';
799 $values = array();
800 $lookingfor = 1;
801
802 return $str;
803 }
804
805 /**
806 * Parse an XML text string and create an array tree that rapresent the XML structure
807 *
808 * @param string $strInputXML The XML string
809 * @return array
810 */
811 function parse($strInputXML) {
812 $this->resParser = xml_parser_create ('UTF-8');
813 xml_set_object($this->resParser, $this);
814 xml_set_element_handler($this->resParser, "tagOpen", "tagClosed");
815
816 xml_set_character_data_handler($this->resParser, "tagData");
817
818 $this->strXmlData = xml_parse($this->resParser, $strInputXML );
819 if (!$this->strXmlData) {
820 die(sprintf("XML error: %s at line %d",
821 xml_error_string(xml_get_error_code($this->resParser)),
822 xml_get_current_line_number($this->resParser)));
823 }
824
825 xml_parser_free($this->resParser);
826
827 return $this->arrOutput;
828 }
829
830 function tagOpen($parser, $name, $attrs) {
831 $tag=array("name"=>$name, "attrs"=>$attrs);
832 array_push($this->arrOutput, $tag);
833 }
834
835 function tagData($parser, $tagData) {
836 if (trim($tagData)) {
837 if (isset($this->arrOutput[count($this->arrOutput)-1]['tagData'])) {
838 $this->arrOutput[count($this->arrOutput)-1]['tagData'] .= $this->utf8_to_entities($tagData);
839 } else {
840 $this->arrOutput[count($this->arrOutput)-1]['tagData'] = $this->utf8_to_entities($tagData);
841 }
842 }
843 }
844
845 function tagClosed($parser, $name) {
846 $this->arrOutput[count($this->arrOutput)-2]['children'][] = $this->arrOutput[count($this->arrOutput)-1];
847 array_pop($this->arrOutput);
848 }
dc383b6f 849
850}
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