preparation for feed generation

[Rakka.git] / Rakka / Storage / Impl.hs

diff --git a/Rakka/Storage/Impl.hs b/Rakka/Storage/Impl.hs
index 2c36f516c2a012dfe64189ca3adaca0fa5da924c..3b48f0c10150c50c5550664cd5d9c47df81669ed 100644 (file)
--- a/Rakka/Storage/Impl.hs
+++ b/Rakka/Storage/Impl.hs
@@ -2,13 +2,13 @@ module Rakka.Storage.Impl
     ( getPage'
     , putPage'
     , deletePage'
+    , getDirContents'
     , startIndexManager
     )
     where
 
 import           Control.Concurrent
 import           Control.Concurrent.STM
-import           Control.Exception
 import           Control.Monad
 import           Data.Maybe
 import           Data.Set (Set)
@@ -26,9 +26,6 @@ import           System.Directory
 import           System.FilePath
 import           System.IO
 import           System.Log.Logger
-import           System.Posix.Files
-import           System.Posix.Types
-import           System.Posix.IO
 import           Text.HyperEstraier hiding (WriteLock)
 
 
@@ -44,11 +41,11 @@ getPage' repos name rev
            p       -> return p
 
 
-putPage' :: Repository -> Page -> IO StatusCode
+putPage' :: Repository -> Maybe String -> Page -> IO StatusCode
 putPage' = putPageIntoRepository
 
 
-deletePage' :: Repository -> PageName -> IO StatusCode
+deletePage' :: Repository -> Maybe String -> PageName -> IO StatusCode
 deletePage' = deletePageFromRepository
 
 
@@ -67,6 +64,13 @@ findChangedPages repos oldRev newRev
       return . S.unions
 
 
+getDirContents' :: Repository -> PageName -> Maybe RevNum -> IO [PageName]
+getDirContents' repos name rev
+    = do reposPages   <- getDirContentsInRevision repos name rev
+         defaultPages <- getDefaultDirContents name
+         return $ S.toList (reposPages `S.union` defaultPages)
+
+
 getCurrentRevNum :: Repository -> IO RevNum
 getCurrentRevNum repos
     = getRepositoryFS repos >>= getYoungestRev
@@ -127,6 +131,7 @@ openIndex indexDir revFile
                               $ removeFile revFile
 
                      Right index <- openDatabase indexDir (Writer [Create []])
+                     addAttrIndex index "@type"          StrIndex
                      addAttrIndex index "@uri"           SeqIndex
                      addAttrIndex index "rakka:revision" SeqIndex
                      noticeM logger ("Created an H.E. index on " ++ indexDir)
@@ -187,37 +192,15 @@ updateIndex index repos mkDraft rev name
 
 
 updateIndexRev :: FilePath -> (RevNum -> IO RevNum) -> IO ()
-updateIndexRev revFile f = bracket acquireLock releaseLock update
+updateIndexRev revFile f = withFile revFile ReadWriteMode update
     where
-      acquireLock :: IO Fd
-      acquireLock
-          = do fd <- openFd revFile ReadWrite (Just stdFileMode) defaultFileFlags
-               waitToSetLock fd (WriteLock, AbsoluteSeek, 0, 0)
-               return fd
-
-      releaseLock :: Fd -> IO ()
-      releaseLock fd
-          = setLock fd (Unlock, AbsoluteSeek, 0, 0)
-
-      update :: Fd -> IO ()
-      update fd
-          = do fdSeek fd AbsoluteSeek 0
-               size <- return . fromIntegral . fileSize =<< getFdStatus fd
-               (revStr, gotSize) <- fdRead fd size
-               when (size /= gotSize) $ fail ("read " ++ show gotSize ++
-                                              " bytes but expected " ++ show size ++ " bytes")
-               
-               let rev = case revStr of
-                           "" -> 0
-                           _  -> read revStr
-
-               rev' <- f rev
-
-               let revStr' = show rev' ++ "\n"
-                   size'   = fromIntegral $ length revStr'
-
-               fdSeek fd AbsoluteSeek 0
-               setFdSize fd 0
-               wroteSize <- fdWrite fd revStr'
-               when (size' /= wroteSize) $ fail ("wrote " ++ show wroteSize ++
-                                                 " bytes but expected " ++ show size' ++ " bytes")
+      update :: Handle -> IO ()
+      update h = do eof  <- hIsEOF h
+                    rev  <- if eof then
+                                return 0
+                            else
+                                hGetLine h >>= return . read
+                    rev' <- f rev
+                    hSeek h AbsoluteSeek 0
+                    hSetFileSize h 0
+                    hPutStrLn h (show rev')