{--------------------------------------------------------------
-
- The main program of the XQuery interpreter
- Programmer: Leonidas Fegaras (fegaras@cse.uta.edu)
- Date: 03/23/2008
-
---------------------------------------------------------------}

{-# OPTIONS_GHC -fth #-}

module Main where

import System.Environment
import XQuery

main = do env <- getArgs
          result <- if (length env) == 1
                       then xfile (head env)
                       else do let readl x = do t <- getLine
                                                if null t then return x else readl (x++" "++t)
                               putStrLn "Write an XQuery (finish the query with an empty line)"
                               query <- readl ""
                               xquery query
          putStrLn (show result)