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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) 2016 (original work) Open Assessment Technologies SA (under the project TAO-PRODUCT); |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | namespace oat\taoQtiTest\models\files; |
| 23 | |
| 24 | use League\MimeTypeDetection\ExtensionMimeTypeDetector; |
| 25 | use oat\oatbox\filesystem\File; |
| 26 | use qtism\common\datatypes\QtiFile; |
| 27 | use qtism\common\enums\BaseType; |
| 28 | use qtism\common\enums\Cardinality; |
| 29 | |
| 30 | class QtiFlysystemFile extends File implements QtiFile |
| 31 | { |
| 32 | public const FILENAME_MD_PREFIX = '.fmd'; |
| 33 | public const CHUNK_SIZE = 2048; |
| 34 | |
| 35 | public function __construct($fileSystemId, $path) |
| 36 | { |
| 37 | parent::__construct($fileSystemId, $path); |
| 38 | } |
| 39 | |
| 40 | public function getData() |
| 41 | { |
| 42 | return $this->read(); |
| 43 | } |
| 44 | |
| 45 | public function getMimeType() |
| 46 | { |
| 47 | $mimeType = parent::getMimeType(); |
| 48 | |
| 49 | // The parent function will return "text/plain" when the mime type can't be detected. As the last resort, |
| 50 | // we use the original file name when available to try to detect its mime type. |
| 51 | if ( |
| 52 | in_array($mimeType, ['text/plain', 'application/octet-stream']) |
| 53 | && $this->hasFilename() |
| 54 | ) { |
| 55 | $mimeTypeDetector = new ExtensionMimeTypeDetector(); |
| 56 | |
| 57 | $mimeType = $mimeTypeDetector->detectMimeTypeFromFile($this->getFilename()) ?? $mimeType; |
| 58 | } |
| 59 | |
| 60 | return $mimeType; |
| 61 | } |
| 62 | |
| 63 | public function hasFilename() |
| 64 | { |
| 65 | return $this->getFileSystem()->fileExists($this->getPrefix() . self::FILENAME_MD_PREFIX); |
| 66 | } |
| 67 | |
| 68 | public function getFilename() |
| 69 | { |
| 70 | $filename = ''; |
| 71 | |
| 72 | if ($this->hasFilename() === true) { |
| 73 | $filename = $this->getFileSystem()->read($this->getPrefix() . self::FILENAME_MD_PREFIX); |
| 74 | } |
| 75 | |
| 76 | return $filename; |
| 77 | } |
| 78 | |
| 79 | public function getStream() |
| 80 | { |
| 81 | return $this->readStream(); |
| 82 | } |
| 83 | |
| 84 | public function getIdentifier() |
| 85 | { |
| 86 | return $this->getPrefix(); |
| 87 | } |
| 88 | |
| 89 | public function equals($obj) |
| 90 | { |
| 91 | if ($obj instanceof QtiFile) { |
| 92 | if ($this->getFilename() !== $obj->getFilename()) { |
| 93 | return false; |
| 94 | } elseif ($this->getMimeType() !== $obj->getMimeType()) { |
| 95 | return false; |
| 96 | } else { |
| 97 | // We have to check the content of the file. |
| 98 | $myStream = $this->getStream(); |
| 99 | $objStream = $obj->getStream(); |
| 100 | |
| 101 | while (feof($myStream) === false && feof($objStream) === false) { |
| 102 | $myChunk = fread($myStream, self::CHUNK_SIZE); |
| 103 | $objChjunk = fread($objStream, self::CHUNK_SIZE); |
| 104 | |
| 105 | if ($myChunk !== $objChjunk) { |
| 106 | @fclose($myStream); |
| 107 | @fclose($objStream); |
| 108 | |
| 109 | return false; |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | @fclose($myStream); |
| 114 | @fclose($objStream); |
| 115 | |
| 116 | return true; |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | return false; |
| 121 | } |
| 122 | |
| 123 | public function getCardinality() |
| 124 | { |
| 125 | return Cardinality::SINGLE; |
| 126 | } |
| 127 | |
| 128 | public function getBaseType() |
| 129 | { |
| 130 | return BaseType::FILE; |
| 131 | } |
| 132 | |
| 133 | public function __toString() |
| 134 | { |
| 135 | return $this->getFileName(); |
| 136 | } |
| 137 | } |