ExtensionRepository.php

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<?php
namespace TYPO3\CMS\Lang\Domain\Repository;
class ExtensionRepository {
    protected $objectManager;

    protected $listUtility;

    protected $extensions = array();

    public function injectObjectManager(\TYPO3\CMS\Extbase\Object\ObjectManager $objectManager) {
        $this->objectManager = $objectManager;
    }

    public function injectListUtility(\TYPO3\CMS\Extensionmanager\Utility\ListUtility $listUtility) {
        $this->listUtility = $listUtility;
    }

    public function findAll() {
        if (!count($this->extensions)) {
            $availableAndInstalledExtensions = $this->listUtility->getAvailableAndInstalledExtensionsWithAdditionalInformation();

            foreach ($availableAndInstalledExtensions as $entry) {
                $extension = $this->objectManager->get(
                    'TYPO3\CMS\Lang\Domain\Model\Extension',
                    $entry['key'],
                    $entry['title'],
                    $this->getExtensionIconWithPath($entry)
                );
                $extension->setVersionFromString($entry['version']);
                $this->extensions[$entry['key']] = $extension;
            }

                // Sort the list by extension key
            ksort($this->extensions);
        }

        return $this->extensions;
    }

    protected function getExtensionIconWithPath($extensionEntry) {
        $extensionIcon = $GLOBALS['TYPO3_LOADED_EXT'][$extensionEntry['key']]['ext_icon'];
        if (empty($extensionIcon)) {
            $extensionIcon = \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::getExtensionIcon(PATH_site . $extensionEntry['siteRelPath'] . '/');
        }

        if (empty($extensionIcon)) {
            $extensionIcon = '/typo3/clear.gif';
        } else {
            $extensionIcon = '../' . $extensionEntry['siteRelPath'] . '/' . $extensionIcon;
        }

        return $extensionIcon;
    }
}