Vsch\TranslationManager\Manager::findTranslations PHP Method

    public function findTranslations($path = null)
    {
        $functions = array('trans', 'trans_choice', 'noEditTrans', 'ifEditTrans', 'Lang::get', 'Lang::choice', 'Lang::trans', 'Lang::transChoice', '@lang', '@choice');
        $pattern = "(" . implode('|', $functions) . ")" . "\\(" . "(['\"])" . "(" . "[a-zA-Z0-9_-]+" . "([.][^
)]+)+" . ")" . "['\"]" . "[\\),]";
        // Close parentheses or new parameter
        // Find all PHP + Twig files in the app folder, except for storage
        $paths = $path ? [$path] : array_merge([$this->app->basePath() . '/app'], $this->app['config']['view']['paths']);
        $keys = array();
        foreach ($paths as $path) {
            $finder = new Finder();
            $finder->in($path)->name('*.php')->name('*.twig')->files();
            /** @var \Symfony\Component\Finder\SplFileInfo $file */
            foreach ($finder as $file) {
                // Search the current file for the pattern
                $fileContents = $file->getContents();
                if (preg_match_all("/{$pattern}/siU", $fileContents, $matches, PREG_PATTERN_ORDER | PREG_OFFSET_CAPTURE)) {
                    // Get all matches
                    $fileLines = null;
                    foreach ($matches[3] as $index => $key) {
                        $quote = $matches[2][$index][0];
                        $keyValue = $key[0];
                        if ($quote == '\'' && !str_contains($keyValue, ["\"", "'", "->"]) || $quote == '"' && !str_contains($keyValue, ["\$", "\"", "'", "->"])) {
                            if ($fileLines == null) {
                                $fileLines = self::computeFileLines($fileContents);
                            }
                            $keys[$keyValue][$file->getPath() . '/' . $file->getFilename()][] = self::offsetLine($fileLines, $key[1]);
                        }
                    }
                }
            }
        }
        // Add the translations to the database, if not existing.
        $count = 0;
        foreach ($keys as $key => $filePathsAndLocation) {
            // Split the group and item
            list($group, $item) = explode('.', $key, 2);
            $translation = $this->missingKey('', $group, $item, null, false, true);
            // create references
            $paths = '';
            foreach ($filePathsAndLocation as $filePath => $locations) {
                $paths .= $filePath . ':' . implode(',', $locations) . "\n";
            }
            if (!$translation->exists) {
                // this one is new
                $translation->is_auto_added = true;
                $count++;
            }
            $translation->source = $paths;
            $translation->save();
        }
        // Return the number of found translations
        return $count;
    }

 /**
  * Execute the console command.
  *
  * @return void
  */
 public function fire()
 {
     $counter = $this->manager->findTranslations();
     $this->info('Done importing, processed ' . $counter . ' items!');
 }