module Main
where
+import Control.Concurrent (threadDelay)
import Control.Monad (when)
-import Data.Maybe (fromJust)
+import Data.Maybe (fromJust, isJust)
import Prelude hiding (readFile)
import System.Directory (doesFileExist)
import System.IO (
import Test.Framework (Test, testGroup)
import Test.Framework.Providers.HUnit (testCase)
import Text.Regex.Posix ((=~))
-import Text.XML.HXT.Core hiding (when)
-
+import Text.XML.HXT.Core (
+ IOStateArrow,
+ SysConfigList,
+ XmlTree,
+ no,
+ readString,
+ withParseHTML,
+ withValidate,
+ withWarnings,
+ yes
+ )
import CommandLine (show_help)
import Configuration (Cfg(..), get_cfg, use_account)
import LWN.HTTP (get_page, log_in, make_cookie_jar)
my_read :: String -> IOStateArrow s b XmlTree
my_read = readString my_read_opts
+
+-- |A wrapper around threadDelay which takes seconds instead of
+-- microseconds as its argument.
+thread_sleep :: Int -> IO ()
+thread_sleep seconds = do
+ let microseconds = seconds * (10 ^ (6 :: Int))
+ threadDelay microseconds
+
+
-- | Try to parse the given article using HXT. We try a few different
-- methods; if none of them work, we return 'Nothing'.
get_xml_from_article :: Cfg -> IO (Maybe (IOStateArrow s b XmlTree))
li_result <- log_in cj
(fromJust $ username cfg)
(fromJust $ password cfg)
- when (not li_result) $ do
- hPutStrLn stderr "Failed to log in."
+
+ -- Without this, the cookie file is empty during
+ -- get_page. Whaaat?
+ thread_sleep 1
+
+ when (isJust li_result) $ do
+ let msg = "Failed to log in. " ++ (fromJust li_result)
+ hPutStrLn stderr msg
html <- get_page (Just cj) my_article
- print $ fromJust $ html
- return $
- case html of
- Nothing -> Nothing
- Just h -> Just $ my_read h
+
+ case html of
+ Left err -> do
+ let msg = "Failed to retrieve page. " ++ err
+ hPutStrLn stderr msg
+ return Nothing
+ Right h -> return $ Just $ my_read h
else do
html <- get_page Nothing my_article
- putStrLn "Not logged in."
- print $ fromJust $ html
- return $
- case html of
- Nothing -> Nothing
- Just h -> Just $ my_read h
+ case html of
+ Left err -> do
+ let msg = "Failed to retrieve page. " ++ err
+ hPutStrLn stderr msg
+ return Nothing
+ Right h -> return $ Just $ my_read h
-- | If we're given an empty path, return a handle to
-- 'stdout'. Otherwise, open the given file and return a read/write