Added a method to get the dbname in Command classes

Command/PhingCommand.php

@@ -292,6 +292,16 @@ EOT;
         return array($name, $defaultConfig);
     }
 
+    /**
+     * Extract the database name from a given DSN
+     * @param string $dsn   A DSN
+     * @return string       The database name extracted from the given DSN
+     */
+    protected function parseDbName($dsn) {
+        preg_match('#dbname=([a-zA-Z0-9\_]+)#', $dsn, $matches);
+        return $matches[1];
+    }
+
     /**
      * Write Propel output as summary.
      *