code: private int parseRewriteUrl() {
          String rewrite = options.get( Less.REWRITE_URLS );
          if( rewrite != null ) {
              switch( rewrite.toLowerCase() ) {
                  case "off":
                      return 0;
                  case "local":
                      return 1;
                  case "all":
                      return 2;
              }
          }
          return 0;
      }
docs: Parse the parameter rewrite URL
  
  @return 0, 1 or 2