+
+
+-- | Try to parse the given article using HXT. We try a few different
+-- methods; if none of them work, we return 'Nothing'.
+get_article_contents :: C.Cfg -> URL -> IO (Maybe String)
+get_article_contents cfg article_name = do
+ my_article <- real_article_path article_name
+ is_file <- doesFileExist my_article
+ case is_file of
+ True -> do
+ contents <- Utf8.readFile my_article
+ return $ Just $ contents
+ False -> do
+ -- Download the URL and try to parse it.
+ if C.use_account cfg then do
+ -- use_account would be false if these fromJusts would fail.
+ cj <- make_cookie_jar
+ li_result <- log_in cj
+ (fromJust $ C.username cfg)
+ (fromJust $ C.password cfg)
+
+ case li_result of
+ Left err -> do
+ let msg = "Failed to log in. " ++ err
+ hPutStrLn stderr msg
+ Right response_body -> do
+ hPutStrLn stderr response_body
+
+ html <- get_page (Just cj) my_article
+
+ case html of
+ Left err -> do
+ let msg = "Failed to retrieve page. " ++ err
+ hPutStrLn stderr msg
+ return Nothing
+ Right h -> return $ Just h
+ else do
+ html <- get_page Nothing my_article
+ case html of
+ Left err -> do
+ let msg = "Failed to retrieve page. " ++ err
+ hPutStrLn stderr msg
+ return Nothing
+ Right h -> return $ Just h