From 7170488c37105691f4a690cbcf1e43000d779b59 Mon Sep 17 00:00:00 2001
From: Gregor Kleen <gkleen@yggdrasil.li>
Date: Thu, 9 Apr 2015 01:41:37 +0200
Subject: Minor code cleanup

---
 build/generate-rss.hs | 31 +++++++++++++++++++------------
 1 file changed, 19 insertions(+), 12 deletions(-)

diff --git a/build/generate-rss.hs b/build/generate-rss.hs
index f6ecfa6..2263ba8 100755
--- a/build/generate-rss.hs
+++ b/build/generate-rss.hs
@@ -25,8 +25,16 @@ type FeedState = (Feed, Maybe T.ClockTime)
 
 feedKind = RSSKind $ Just "2.0"
 
+baseurl = "http://dirty-haskell.org"
+
+description = "dirty-haskell.org — a blog"
+
+mkUrl' :: FilePath -> String
+mkUrl' path = (++) (baseurl ++ "/posts/") $ (flip FP.replaceExtension) "html" $ FP.takeFileName path
+
+
 extract_title :: Pandoc -> String
-extract_title d@(Pandoc m _) = do
+extract_title (Pandoc m _) = do
   title <- render Nothing $ cat $ map pretty (docTitle m)
   return title
     where pretty :: Inline -> Doc
@@ -38,9 +46,13 @@ main :: IO ()
 main = do
   (title:entries) <- getArgs
   currentTime <- T.getClockTime
-  let feed = withFeedHome "http://dirty-haskell.org" $ withFeedTitle title $ newFeed feedKind
+  let feed = foldl1 (.)
+             [ withFeedDescription description
+             , withFeedHome baseurl
+             , withFeedTitle title
+             ] $ newFeed feedKind
   (populatedFeed, itemTime) <- S.execStateT (sequence $ map addItem' entries) (feed, Nothing)
-  let populatedFeed' = withFeedDate (toFeedDateString feedKind $ fromMaybe currentTime itemTime) populatedFeed
+  let populatedFeed' = withFeedPubDate (toFeedDateString feedKind $ fromMaybe currentTime itemTime) $ withFeedLastUpdate (toFeedDateString feedKind currentTime) $ populatedFeed
   putStrLn $ X.ppElement $ xmlFeed populatedFeed'
 
 addItem' :: FilePath -> S.StateT FeedState IO ()
@@ -54,11 +66,13 @@ addItem' mdFile = do
   (feed, time) <- S.get
   let fileTime = maximum ([F.modificationTime, F.statusChangeTime] <-> fileStatus) :: System.Posix.Types.EpochTime
       fileTime' = T.TOD (toInteger $ fromEnum fileTime) 0
-  let item = [ withItemTitle title
+  let item = foldl1 (.)
+             [ withItemTitle title
              , withItemLink url
+             , withItemId True url
              , withItemDate $ toFeedDateString feedKind fileTime'
              , withItemDescription contents
-             ] <--> (newItem feedKind) :: Item
+             ] $ newItem feedKind :: Item
   S.put (addItem item feed, if (Just fileTime' > time) then Just fileTime' else time)
 
 mkUrl :: FilePath -> IO String
@@ -69,13 +83,6 @@ mkUrl link = do
        mkUrl $ FP.combine (FP.takeDirectory link) target
     else
     return $ mkUrl' link
-mkUrl' :: FilePath -> String
-mkUrl' path = (++) "http://dirty-haskell.org/posts/" $ (flip FP.replaceExtension) "html" $ FP.takeFileName path
-
 (<->) :: [(a -> b)] -> a -> [b]
 [] <-> _ = []
 (f:fs) <-> x = (f x:fs <-> x)
-
-(<-->) :: [(a -> a)] -> a -> a
-[] <--> x = x
-(f:fs) <--> x = fs <--> (f x)
-- 
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