whitelist = $whitelist; } /** * Load the given environment file content into the repository. * * @param \Dotenv\Repository\RepositoryInterface $repository * @param string $content * * @throws \Dotenv\Exception\InvalidFileException * * @return array */ public function load(RepositoryInterface $repository, $content) { return $this->processEntries($repository, Lines::process(Regex::split("/(\r\n|\n|\r)/", $content)->getSuccess())); } /** * Process the environment variable entries. * * We'll fill out any nested variables, and acually set the variable using * the underlying environment variables instance. * * @param \Dotenv\Repository\RepositoryInterface $repository * @param string[] $entries * * @throws \Dotenv\Exception\InvalidFileException * * @return array */ private function processEntries(RepositoryInterface $repository, array $entries) { $vars = []; foreach ($entries as $entry) { list($name, $value) = Parser::parse($entry); if ($this->whitelist === null || \in_array($name, $this->whitelist, \true)) { $vars[$name] = self::resolveNestedVariables($repository, $value); $repository->set($name, $vars[$name]); } } return $vars; } /** * Resolve the nested variables. * * Look for ${varname} patterns in the variable value and replace with an * existing environment variable. * * @param \Dotenv\Repository\RepositoryInterface $repository * @param \Dotenv\Loader\Value|null $value * * @return string|null */ private static function resolveNestedVariables(RepositoryInterface $repository, Value $value = null) { /** @var Option */ $option = Option::fromValue($value); return $option->map(function (Value $v) use($repository) { /** @var string */ return \array_reduce($v->getVars(), function ($s, $i) use($repository) { return \substr($s, 0, $i) . self::resolveNestedVariable($repository, \substr($s, $i)); }, $v->getChars()); })->getOrElse(null); } /** * Resolve a single nested variable. * * @param \Dotenv\Repository\RepositoryInterface $repository * @param string $str * * @return string */ private static function resolveNestedVariable(RepositoryInterface $repository, $str) { return Regex::replaceCallback('/\\A\\${([a-zA-Z0-9_.]+)}/', function (array $matches) use($repository) { return Option::fromValue($repository->get($matches[1]))->getOrElse($matches[0]); }, $str, 1)->success()->getOrElse($str); } }