Display the date of the registry

Registry/Registry.hs

@@ -31,6 +31,8 @@ getRegistry input =
     else
           registryOf reg    
 
+dateOf (Date d) = d 
+
 isValidLanguage l dict =
     if length (filter (onlyThisValue "language" l) dict) == 1 then
        (True, "")

Registry/check-registry.hs

@@ -71,18 +71,19 @@ main = do
   input <- System.IO.readFile registryfilename
   let syntaxTree = parse input
   if (checkOK syntaxTree) then do
+      let theDate = dateOf (head (registryOf syntaxTree))
       let result = semanticCheck (registryOf syntaxTree)
       if (checkOK result) then do
           if verbose opts then 
-              putStrLn (registryfilename ++ " is OK") -- TODO: display the date
+              putStrLn (registryfilename ++ " of " ++ theDate ++ " is OK") 
            else
               nothing
           Exit.exitWith Exit.ExitSuccess
        else do
-          putStrLn ("Semantic error in " ++ registryfilename ++ ": " ++ 
+          putStrLn ("Semantic error in " ++ registryfilename ++ " of " ++ theDate ++ ": " ++ 
                     (messageOf result))
           Exit.exitWith (Exit.ExitFailure 3)
     else do
        putStrLn ("Syntax error in " ++ registryfilename ++ ": " ++ 
                  (messageOf syntaxTree))
-       Exit.exitWith (Exit.ExitFailure 2)
+       Exit.exitWith (Exit.ExitFailure 2)

check-valid.hs

@@ -4,14 +4,15 @@ import Registry.Registry
 
 infile = "./language-subtag-registry"
 
-analyze reg input 
+analyze reg input = do
-        = case (getTag input) of
+        let theDate = dateOf (head reg)
+        case (getTag input) of
             Left err -> err
             Right tag  -> let result = isValid reg tag in
                           if fst result then
-                              (input ++ " is valid\n") -- TODO: indicate the date of the registry
+                              (input ++ " is valid against registry " ++ theDate ++ "\n") 
                           else
-                              (input ++ " is NOT valid: " ++ snd result ++ "\n")
+                              (input ++ " is NOT valid against registry " ++ theDate ++ ": " ++ snd result ++ "\n")
 
 main = do
   myargs <- getArgs