FormatDetailsViewHelper.php

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<?php
namespace TYPO3\CMS\Belog\ViewHelpers;

class FormatDetailsViewHelper extends \TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper {

    public function render(\TYPO3\CMS\Belog\Domain\Model\LogEntry $logEntry) {
        $detailString = $logEntry->getDetails();
        $substitutes = $logEntry->getLogData();
        // Strip pathes from file names if the log was a file action
        if ($logEntry->getType() === 2) {
            $substitutes = $this->stripPathFromFilenames($substitutes);
        }
        // Substitute
        $detailString = vsprintf($detailString, $substitutes);
        // Remove possible pending other %s
        $detailString = str_replace('%s', '', $detailString);
        return htmlspecialchars($detailString);
    }

    protected function stripPathFromFilenames(array $files = array()) {
        foreach ($files as $key => $file) {
            $files[$key] = basename($file);
        }
        return $files;
    }

}