import qualified System.IO
import qualified Text.ParserCombinators.Parsec as Parsec

import Registry.Utils
import Registry.Grammar (registry)
import Registry.Registry

infile = "./language-subtag-registry"

displayAll reg = "<registry>" ++
   (foldr (++) "" (map toXML reg)) ++
   "</registry>"

displayOne reg thistype thisvalue =
   concat (map toXML
                   (filter (onlyThisValue thistype thisvalue) reg))

foreach [] func = return ()
foreach a func = do
   func (head a)
   foreach (tail a) func

main = do
  f <- System.IO.openFile (infile) System.IO.ReadMode
  input <- System.IO.hGetContents f
  let theregistry = getRegistry input
  let outfile = "language-subtag-registry.xml"
  f <- System.IO.openFile (outfile) System.IO.WriteMode
  System.IO.hPutStr f (displayAll theregistry)
  System.IO.hClose f