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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; under version 2 |
| 7 | * of the License (non-upgradable). |
| 8 | * |
| 9 | * This program 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 this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 17 | * |
| 18 | * Copyright (c) 2019 (original work) Open Assessment Technologies SA ; |
| 19 | */ |
| 20 | |
| 21 | /** |
| 22 | * @author Péter Halász <peter@taotesting.com> |
| 23 | */ |
| 24 | |
| 25 | namespace oat\taoQtiTest\models\runner; |
| 26 | |
| 27 | use oat\oatbox\service\ConfigurableService; |
| 28 | use tao_models_classes_service_FileStorage; |
| 29 | use taoQtiTest_models_classes_QtiTestService; |
| 30 | |
| 31 | class TestDefinitionSerializerService extends ConfigurableService |
| 32 | { |
| 33 | public const SERVICE_ID = 'taoQtiTest/TestDefinitionSerializerService'; |
| 34 | |
| 35 | /** |
| 36 | * @param QtiRunnerServiceContext $serviceContext |
| 37 | * @return array |
| 38 | */ |
| 39 | public function getSerializedTestDefinition(QtiRunnerServiceContext $serviceContext) |
| 40 | { |
| 41 | return $this->parseXmlToArray($this->getTestDefinitionXml($serviceContext)); |
| 42 | } |
| 43 | |
| 44 | /** |
| 45 | * @param string $xml |
| 46 | * @return array |
| 47 | */ |
| 48 | private function parseXmlToArray($xml) |
| 49 | { |
| 50 | $xml = simplexml_load_string($xml); |
| 51 | $parsedXml = json_decode(json_encode($xml), true); |
| 52 | |
| 53 | return $this->setSubObjectToArray( |
| 54 | $parsedXml, |
| 55 | [ |
| 56 | taoQtiTest_models_classes_QtiTestService::XML_TEST_PART, |
| 57 | taoQtiTest_models_classes_QtiTestService::XML_ASSESSMENT_SECTION, |
| 58 | taoQtiTest_models_classes_QtiTestService::XML_ASSESSMENT_ITEM_REF, |
| 59 | ] |
| 60 | ); |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Changes recursively the value of the given sub-keys into array in the given object |
| 65 | * |
| 66 | * @param array $object |
| 67 | * @param array $keys |
| 68 | * @return array |
| 69 | */ |
| 70 | private function setSubObjectToArray($object, $keys) |
| 71 | { |
| 72 | $key = array_shift($keys); |
| 73 | |
| 74 | // if the object is an associative array, turn it into an indexed array |
| 75 | if ($object[$key] !== array_values($object[$key])) { |
| 76 | $object[$key] = [$object[$key]]; |
| 77 | } |
| 78 | |
| 79 | if (count($keys) > 0) { |
| 80 | foreach ($object[$key] as $index => $subObject) { |
| 81 | $object[$key][$index] = $this->setSubObjectToArray($subObject, $keys); |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | return $object; |
| 86 | } |
| 87 | |
| 88 | /** |
| 89 | * @param QtiRunnerServiceContext $serviceContext |
| 90 | * @return string |
| 91 | */ |
| 92 | private function getTestDefinitionXml(QtiRunnerServiceContext $serviceContext) |
| 93 | { |
| 94 | $privateDirectoryId = explode('|', $serviceContext->getTestCompilationUri())[0]; |
| 95 | $directory = $this->getFileStorageService()->getDirectoryById($privateDirectoryId); |
| 96 | |
| 97 | $path = $directory->getFile(taoQtiTest_models_classes_QtiTestService::QTI_TEST_DEFINITION_INDEX)->read(); |
| 98 | |
| 99 | return $directory->getFile($path)->read(); |
| 100 | } |
| 101 | |
| 102 | /** |
| 103 | * @return tao_models_classes_service_FileStorage |
| 104 | */ |
| 105 | private function getFileStorageService() |
| 106 | { |
| 107 | return $this->getServiceLocator()->get(\tao_models_classes_service_FileStorage::SERVICE_ID); |
| 108 | } |
| 109 | } |