X-Git-Url: http://gitweb.michael.orlitzky.com/?p=dead%2Flwn-epub.git;a=blobdiff_plain;f=src%2FMain.hs;h=88ba39c5ff493cd9b3b0acafc9992738d080138f;hp=da760e45af7a58676b8b6cfdd2c0198de6c41d78;hb=10f322ce20600de109c4643967b6ce3f61f69bf6;hpb=44549423b80c9bf8edf5e942bc8ac457d9817195

diff --git a/src/Main.hs b/src/Main.hs
index da760e4..88ba39c 100644
--- a/src/Main.hs
+++ b/src/Main.hs
@@ -1,7 +1,37 @@
+{-# LANGUAGE DoAndIfThenElse #-}
 module Main
 where
 
+import System.IO (
+  Handle,
+  IOMode (WriteMode),
+  openBinaryFile,
+  stdout)
+
+import CommandLine (show_help)
+import Configuration (Cfg(..), get_cfg)
+import LWN.Page (epublish, page_from_url)
+
+
+-- | If we're given an empty path, return a handle to
+--   'stdout'. Otherwise, open the given file and return a read/write
+--   handle to that.
+get_output_handle :: FilePath -> IO Handle
+get_output_handle path =
+  if (null path) then
+    return stdout
+  else
+    openBinaryFile path WriteMode
+
 
 main :: IO ()
 main = do
-  putStrLn "Hello, world."
+  cfg <- get_cfg
+  page <- page_from_url cfg (article cfg)
+  case page of
+    Just p -> do
+      output_handle <- get_output_handle (output cfg)
+      epublish p output_handle
+    Nothing -> do
+      _ <- show_help
+      return ()