reorganize the directories under src, and rescue the JavaScript interpreter from deprecated

src/compiler/GF/Command/Parse.hs

@@ -0,0 +1,64 @@
+module GF.Command.Parse(readCommandLine, pCommand) where
+
+import PGF.CId
+import PGF.Expr
+import GF.Command.Abstract
+
+import Data.Char
+import Control.Monad
+import qualified Text.ParserCombinators.ReadP as RP
+
+readCommandLine :: String -> Maybe CommandLine
+readCommandLine s = case [x | (x,cs) <- RP.readP_to_S pCommandLine s, all isSpace cs] of
+                      [x] -> Just x
+                      _   -> Nothing
+
+pCommandLine =
+  (RP.skipSpaces >> RP.char '-' >> RP.char '-' >> RP.skipMany (RP.satisfy (const True)) >> return [])   -- comment
+  RP.<++
+  (RP.sepBy (RP.skipSpaces >> pPipe) (RP.skipSpaces >> RP.char ';'))
+
+pPipe = RP.sepBy1 (RP.skipSpaces >> pCommand) (RP.skipSpaces >> RP.char '|')
+
+pCommand = (do
+  cmd  <- pIdent RP.<++ (RP.char '%' >> pIdent >>= return . ('%':))
+  RP.skipSpaces
+  opts <- RP.sepBy pOption RP.skipSpaces
+  arg  <- pArgument
+  return (Command cmd opts arg)
+  )
+    RP.<++ (do
+  RP.char '?' 
+  c <- pSystemCommand 
+  return (Command "sp" [OFlag "command" (VStr c)] ANoArg)
+  ) 
+
+pOption = do
+  RP.char '-'
+  flg <- pIdent
+  RP.option (OOpt flg) (fmap (OFlag flg) (RP.char '=' >> pValue))
+
+pValue = do
+  fmap (VInt . read) (RP.munch1 isDigit)
+  RP.<++
+  fmap VStr pStr
+  RP.<++
+  fmap VId  pFilename
+
+pFilename = liftM2 (:) (RP.satisfy isFileFirst) (RP.munch (not . isSpace)) where
+  isFileFirst c = not (isSpace c) && not (isDigit c)
+
+pArgument =          
+  RP.option ANoArg 
+    (fmap AExpr pExpr
+              RP.<++ 
+    (RP.munch isSpace >> RP.char '%' >> fmap AMacro pIdent))
+
+pSystemCommand = 
+  RP.munch isSpace >> (
+    (RP.char '"' >> (RP.manyTill (pEsc RP.<++ RP.get) (RP.char '"')))
+      RP.<++
+    RP.many RP.get
+    )
+       where
+         pEsc = RP.char '\\' >> RP.get