-{-# LANGUAGE ScopedTypeVariables, RecordWildCards #-}
+{-# 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 Text.XML.HXT.Core
-import CommandLine (Args(..), apply_args)
-import LWN.Page
+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)
-my_read :: String -> IOStateArrow s b XmlTree
-my_read =
- readDocument [ withValidate no,
- withParseHTML yes,
- withInputEncoding utf8,
- withWarnings no ]
-- | If we're given an empty path, return a handle to
-- 'stdout'. Otherwise, open the given file and return a read/write
openBinaryFile path WriteMode
--- | Convert the given article to either a URL or a filesystem
--- path. If the given article exists on the filesystem, we assume
--- it's a file. Otherwise, we check to see if it's a URL. Failing
--- that, we try to construct a URL from what we're given and do our
--- best.
-real_article_path :: String -> IO String
-real_article_path = return . id
+argument_is_file :: Cfg -> IO Bool
+argument_is_file cfg = do
+ path <- real_article_path (article cfg)
+ doesFileExist path
main :: IO ()
main = do
- Args{..} <- apply_args
- output_handle <- get_output_handle output
- input_path <- real_article_path article
- let html = my_read input_path
- result <- parse html
-
- case result of
- Just stuff -> epublish stuff output_handle
- Nothing -> return ()
-
- putStrLn "Done."
+ 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