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| 1 | <?php |
| 2 | |
| 3 | namespace oat\taoQtiTest\models; |
| 4 | |
| 5 | use oat\oatbox\service\ConfigurableService; |
| 6 | use qtism\data\AssessmentTest; |
| 7 | use qtism\data\QtiComponent; |
| 8 | |
| 9 | /** |
| 10 | * Compilation Data Service |
| 11 | * |
| 12 | * An abstract Compilation Data Service. Its implementation aim |
| 13 | * at providing a way to compile Delivery data in various ways. |
| 14 | */ |
| 15 | abstract class CompilationDataService extends ConfigurableService |
| 16 | { |
| 17 | public const SERVICE_ID = 'taoQtiTest/CompilationDataService'; |
| 18 | |
| 19 | /** |
| 20 | * Create a new CompilationDataService object. |
| 21 | * |
| 22 | * @param $options |
| 23 | */ |
| 24 | public function __construct($options = []) |
| 25 | { |
| 26 | parent::__construct($options); |
| 27 | } |
| 28 | |
| 29 | /** |
| 30 | * @return string |
| 31 | */ |
| 32 | abstract public function getOutputFileType(); |
| 33 | |
| 34 | /** |
| 35 | * Write Compilation Data |
| 36 | * |
| 37 | * Write a QtiComponent $object into a given $compilationDirectory at a given $path. |
| 38 | * |
| 39 | * @param \tao_models_classes_service_StorageDirectory $compilationDirectory |
| 40 | * @param string $path |
| 41 | * @param \qtism\data\QtiComponent $object |
| 42 | */ |
| 43 | abstract public function writeCompilationData( |
| 44 | \tao_models_classes_service_StorageDirectory $compilationDirectory, |
| 45 | $path, |
| 46 | QtiComponent $object |
| 47 | ); |
| 48 | |
| 49 | |
| 50 | /** |
| 51 | * Read Compilation Data |
| 52 | * |
| 53 | * Read a QtiComponent object from a given $compilationDirectory at a given $path. |
| 54 | * |
| 55 | * @param \tao_models_classes_service_StorageDirectory $compilationDirectory |
| 56 | * @param string $path |
| 57 | * @param string $cacheInfo (optional) A context string possibly used by implementations for caching purpose. |
| 58 | * @return \qtism\data\QtiComponent |
| 59 | * @throws \common_Exception In case of error. |
| 60 | */ |
| 61 | abstract public function readCompilationData( |
| 62 | \tao_models_classes_service_StorageDirectory $compilationDirectory, |
| 63 | $path, |
| 64 | $cacheInfo = '' |
| 65 | ); |
| 66 | |
| 67 | /** |
| 68 | * Write Compilation Metadata |
| 69 | * |
| 70 | * @param \tao_models_classes_service_StorageDirectory $compilationDirectory |
| 71 | * @param AssessmentTest $test |
| 72 | * @throws \common_Exception |
| 73 | */ |
| 74 | public function writeCompilationMetadata( |
| 75 | \tao_models_classes_service_StorageDirectory $compilationDirectory, |
| 76 | AssessmentTest $test |
| 77 | ) { |
| 78 | try { |
| 79 | $filename = \taoQtiTest_models_classes_QtiTestService::TEST_COMPILED_META_FILENAME . '.json'; |
| 80 | $meta = \taoQtiTest_helpers_TestCompilerUtils::testMeta($test); |
| 81 | $compilationDirectory->write($filename, json_encode($meta)); |
| 82 | } catch (\Exception $e) { |
| 83 | throw new \common_Exception("Unable to write file '${filename}'."); |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * Read Compilation Metadata |
| 89 | * |
| 90 | * @param \tao_models_classes_service_StorageDirectory $compilationDirectory |
| 91 | * @return mixed |
| 92 | * @throws \common_Exception |
| 93 | */ |
| 94 | public function readCompilationMetadata(\tao_models_classes_service_StorageDirectory $compilationDirectory) |
| 95 | { |
| 96 | try { |
| 97 | $data = $compilationDirectory->read( |
| 98 | \taoQtiTest_models_classes_QtiTestService::TEST_COMPILED_META_FILENAME . '.json' |
| 99 | ); |
| 100 | return json_decode($data, true); |
| 101 | } catch (\Exception $e) { |
| 102 | // Legacy compilation support. |
| 103 | try { |
| 104 | $filename = \taoQtiTest_models_classes_QtiTestService::TEST_COMPILED_META_FILENAME . '.php'; |
| 105 | $data = $compilationDirectory->read($filename); |
| 106 | $data = str_replace('<?php', '', $data); |
| 107 | $data = str_replace('?>', '', $data); |
| 108 | return eval($data); |
| 109 | } catch (\Exception $e) { |
| 110 | throw new \common_Exception("Unable to read file '${filename}'."); |
| 111 | } |
| 112 | } |
| 113 | } |
| 114 | } |