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<?php |
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declare(strict_types=1); |
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namespace ApacheSolrForTypo3\Tika\Service\Extractor; |
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/* |
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* This file is part of the TYPO3 CMS project. |
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* |
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* It is free software; you can redistribute it and/or modify it under |
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* the terms of the GNU General Public License, either version 2 |
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* of the License, or any later version. |
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* |
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* For the full copyright and license information, please read the |
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* LICENSE.txt file that was distributed with this source code. |
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* |
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* The TYPO3 project - inspiring people to share! |
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*/ |
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use ApacheSolrForTypo3\Tika\Service\File\SizeValidator; |
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use ApacheSolrForTypo3\Tika\Service\Tika\ServiceFactory; |
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use ApacheSolrForTypo3\Tika\Util; |
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use Psr\Http\Client\ClientExceptionInterface; |
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use TYPO3\CMS\Core\Configuration\Exception\ExtensionConfigurationExtensionNotConfiguredException; |
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use TYPO3\CMS\Core\Configuration\Exception\ExtensionConfigurationPathDoesNotExistException; |
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use TYPO3\CMS\Core\Resource\FileInterface; |
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use TYPO3\CMS\Core\Resource\TextExtraction\TextExtractorInterface; |
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use TYPO3\CMS\Core\Utility\GeneralUtility; |
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/** |
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* A service to extract text from files using Apache Tika |
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* |
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* @author Ingo Renner <[email protected]> |
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*/ |
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class TextExtractor implements TextExtractorInterface |
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{ |
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/** |
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* @var array |
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*/ |
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protected array $configuration; |
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/** |
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* Supported file types (by extension) |
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* @TODO query Tika for supported extensions |
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* |
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* @var array |
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*/ |
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protected array $supportedFileTypes = [ |
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'doc', |
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'docx', |
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'epub', |
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'htm', |
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'html', |
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'msg', |
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'odf', |
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'odt', |
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'pdf', |
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'ppt', |
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'pptx', |
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'rtf', |
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'sxw', |
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'txt', |
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'xls', |
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'xlsx', |
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'zip', |
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]; |
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/** |
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* @var SizeValidator |
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*/ |
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private $fileSizeValidator; |
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/** |
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* Constructor |
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*/ |
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public function __construct() |
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{ |
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$this->configuration = Util::getTikaExtensionConfiguration(); |
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$this->fileSizeValidator = GeneralUtility::makeInstance(SizeValidator::class); |
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} |
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/** |
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* Checks if the given file can be processed by this Extractor |
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* |
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* @param FileInterface $file |
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* @return bool |
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*/ |
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public function canExtractText(FileInterface $file): bool |
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{ |
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$isSupportedFileExtension = in_array($file->getExtension(), $this->supportedFileTypes); |
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$isSizeBelowLimit = $this->fileSizeValidator->isBelowLimit($file); |
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return $isSizeBelowLimit && $isSupportedFileExtension; |
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} |
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/** |
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* Extracts text from a file using Apache Tika |
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* |
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* @param FileInterface $file |
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* @return string Text extracted from the input file |
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* @throws ClientExceptionInterface |
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* @throws ExtensionConfigurationExtensionNotConfiguredException |
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* @throws ExtensionConfigurationPathDoesNotExistException |
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*/ |
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public function extractText(FileInterface $file): string |
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{ |
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$tika = ServiceFactory::getTika($this->configuration['extractor']); |
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return $tika->extractText($file); |
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} |
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} |
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TYPO3-Solr /
ext-tika
