X-Git-Url: http://gitweb.michael.orlitzky.com/?p=dead%2Flwn-epub.git;a=blobdiff_plain;f=src%2FMain.hs;h=1f6d7c5f436a583d5143b05c1cf55aaf4126995e;hp=da760e45af7a58676b8b6cfdd2c0198de6c41d78;hb=291c39f59e958a012dd6e4ddec9b0276a4045b45;hpb=44549423b80c9bf8edf5e942bc8ac457d9817195

diff --git a/src/Main.hs b/src/Main.hs
index da760e4..1f6d7c5 100644
--- a/src/Main.hs
+++ b/src/Main.hs
@@ -1,7 +1,58 @@
+{-# LANGUAGE DoAndIfThenElse #-}
 module Main
 where
 
+import Control.Concurrent.ParallelIO (stopGlobalPool)
+import System.Directory (doesFileExist)
+import System.IO (
+  Handle,
+  IOMode (WriteMode),
+  hPutStrLn,
+  openBinaryFile,
+  stderr,
+  stdout
+  )
+
+import CommandLine (show_help)
+import Configuration (Cfg(..), get_cfg)
+import LWN.Article (real_article_path)
+import LWN.HTTP (get_login_cookie)
+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
+
+
+argument_is_file :: Cfg -> IO Bool
+argument_is_file cfg = do
+  path <- real_article_path (article cfg)
+  doesFileExist path
 
 main :: IO ()
 main = do
-  putStrLn "Hello, world."
+  cfg' <- get_cfg
+  aif <- argument_is_file cfg'
+  cfg  <- case aif of
+           False -> get_login_cookie cfg'
+           True  -> return 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
+      hPutStrLn stderr "ERROR: could not parse an LWN page from the given URL."
+      _ <- show_help
+      return ()
+
+  -- Necessary, for some reason.
+  stopGlobalPool