Merge pull request #21 from wp-cli/conditional-path

Only attempt to build relative path when inside of Phar

Author: schlessera

src/Server_Command.php

@@ -76,13 +76,10 @@ function __invoke( $_, $assoc_args ) {
 		}
 
 		// Get the path to the router file
-		$router_path = WP_CLI_ROOT . '/vendor/wp-cli/server-command/router.php';
+		$command_root = WP_CLI\Utils\phar_safe_path( dirname( __DIR__ ) );
+		$router_path = $command_root . '/router.php';
 		if ( ! file_exists( $router_path ) ) {
-			// server command must've been built with vendor/wp-cli/wp-cli
-			$router_path = WP_CLI_ROOT . '/../../../router.php';
-			if ( ! file_exists( $router_path ) ) {
-				WP_CLI::error( "Couldn't find router.php" );
-			}
+			WP_CLI::error( "Couldn't find router.php" );
 		}
 		$cmd = \WP_CLI\Utils\esc_cmd( '%s -S %s -t %s -c %s %s',
 			WP_CLI::get_php_binary(),