updating hpc toolkit

[ghc-hetmet.git] / utils / hpc / HpcUtils.hs

diff --git a/utils/hpc/HpcUtils.hs b/utils/hpc/HpcUtils.hs
index b679a37..ed8be63 100644 (file)
--- a/utils/hpc/HpcUtils.hs
+++ b/utils/hpc/HpcUtils.hs
@@ -2,6 +2,7 @@ module HpcUtils where
 
 import Trace.Hpc.Util
 import qualified HpcMap as Map
+import HpcFlags
 
 -- turns \n into ' '
 -- | grab's the text behind a HpcPos; 
@@ -18,3 +19,14 @@ grabHpcPos hsMap span =
                            Nothing -> error $ "bad line number : " ++ show n
                   ) [l1..l2]
 
+
+readFileFromPath :: (String -> IO String) -> String -> [String] -> IO String
+readFileFromPath err filename@('/':_) _ = readFile filename
+readFileFromPath err filename path0 = readTheFile path0
+  where
+       readTheFile [] = err $ "could not find " ++ show filename 
+                                ++ " in path " ++ show path0
+       readTheFile (dir:dirs) = 
+               catch (do str <- readFile (dir ++ "/" ++ filename) 
+                         return str) 
+                     (\ _ -> readTheFile dirs)