GF/src is now for 2.9, and the new sources are in src-3.0 - keep it this way until the release of GF 3

src-3.0/GF/Canon/GetGFC.hs

@@ -0,0 +1,78 @@
+----------------------------------------------------------------------
+-- |
+-- Module      : GetGFC
+-- Maintainer  : AR
+-- Stability   : (stable)
+-- Portability : (portable)
+--
+-- > CVS $Date: 2005/05/30 18:39:43 $ 
+-- > CVS $Author: aarne $
+-- > CVS $Revision: 1.9 $
+--
+-- (Description of the module)
+-----------------------------------------------------------------------------
+
+module GF.Canon.GetGFC (getCanonModule, getCanonGrammar) where
+
+import GF.Data.Operations
+import GF.Canon.ParGFC
+import GF.Canon.GFC
+import GF.Canon.MkGFC
+import GF.Infra.Modules
+import GF.Infra.UseIO
+
+import System.IO
+import System.Directory
+import Control.Monad
+
+getCanonModule :: FilePath -> IOE CanonModule
+getCanonModule file = do
+  gr <- getCanonGrammar file
+  case modules gr of
+    [m] -> return m
+    _ -> ioeErr $ Bad "expected exactly one module in a file"
+
+getCanonGrammar :: FilePath -> IOE CanonGrammar
+-- getCanonGrammar = getCanonGrammarByLine
+getCanonGrammar file = do
+  s <- ioeIO $ readFileIf file
+  c <- ioeErr $ pCanon $ myLexer s
+  return $ canon2grammar c
+
+{-
+-- the following surprisingly does not save memory so it is
+-- not in use
+
+getCanonGrammarByLine :: FilePath -> IOE CanonGrammar
+getCanonGrammarByLine file = do
+  b <- ioeIO $ doesFileExist file
+  if not b 
+    then ioeErr $ Bad $ "file" +++ file +++ "does not exist"
+    else do
+   ioeIO $ putStrLn ""
+   hand <- ioeIO $ openFile file ReadMode ---- err
+   size <- ioeIO $ hFileSize hand
+   gr <- addNextLine (size,0) 1 hand emptyMGrammar
+   ioeIO $ hClose hand
+   return $ MGrammar $ reverse $ modules gr
+
+ where
+   addNextLine (size,act) d hand gr = do
+     eof <- ioeIO $ hIsEOF hand 
+     if eof 
+       then return gr 
+       else do
+         s <- ioeIO  $ hGetLine hand
+         let act' = act + toInteger (length s)
+--         if isHash act act' then (ioeIO $ putChar '#') else return () 
+         updGrammar act' d gr $ pLine $ myLexer s
+    where     
+      updGrammar a d gr (Ok t) = case buildCanonGrammar d gr t of 
+        (gr',d') -> addNextLine (size,a) d' hand gr'
+      updGrammar _ _ gr (Bad s) = do
+        ioeIO $ putStrLn s
+        return emptyMGrammar
+
+      isHash a b = a `div` step < b `div` step
+      step = size `div` 50
+-}