MiscUtility.php

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<?php
namespace TYPO3\CMS\Documentation\Utility;

use TYPO3\CMS\Core\Utility\ExtensionManagementUtility;

class MiscUtility {

    static public function getExtensionMetaData($extensionKey) {
        $_EXTKEY = $extensionKey;
        $EM_CONF = array();
        $extPath = ExtensionManagementUtility::extPath($extensionKey);
        include($extPath . 'ext_emconf.php');

        $release = $EM_CONF[$_EXTKEY]['version'];
        list($major, $minor, $_) = explode('.', $release, 3);
        if (($pos = strpos($minor, '-')) !== FALSE) {
            // $minor ~ '2-dev'
            $minor = substr($minor, 0, $pos);
        }
        $EM_CONF[$_EXTKEY]['version'] = $major . '.' . $minor;
        $EM_CONF[$_EXTKEY]['release'] = $release;
        $EM_CONF[$_EXTKEY]['extensionKey'] = $extensionKey;

        return $EM_CONF[$_EXTKEY];
    }

    static public function getIcon($documentKey) {
        $basePath = 'typo3conf/Documentation/';
        $documentPath = $basePath . $documentKey . '/';

        // Fallback icon
        $icon = ExtensionManagementUtility::siteRelPath('documentation') . 'ext_icon.gif';

        if (\TYPO3\CMS\Core\Utility\GeneralUtility::isFirstPartOfStr($documentKey, 'typo3cms.extensions.')) {
            // Standard extension icon
            $extensionKey = substr($documentKey, 20);
            if (ExtensionManagementUtility::isLoaded($extensionKey)) {
                $extensionPath = ExtensionManagementUtility::extPath($extensionKey);
                $siteRelativePath = ExtensionManagementUtility::siteRelPath($extensionKey);
                $icon = $siteRelativePath . ExtensionManagementUtility::getExtensionIcon($extensionPath);
            }
        } elseif (is_file(PATH_site . $documentPath . 'icon.png')) {
            $icon = $documentPath . 'icon.png';
        } elseif (is_file(PATH_site . $documentPath . 'icon.gif')) {
            $icon = $documentPath . 'icon.gif';
        }

        return $icon;
    }

}