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--------------------------------------------------------------------------------
module Hakyll.Check
( runCheck
) where
--------------------------------------------------------------------------------
import Control.Applicative ((<$>))
import Control.Exception (SomeException, handle)
import Control.Monad (forM_)
import Control.Monad.Reader (ReaderT, ask, runReaderT)
import Control.Monad.Trans (liftIO)
import Control.Monad.Writer (WriterT, runWriterT, tell)
import Data.List (isPrefixOf)
import Data.Monoid (Monoid (..))
import qualified Network.HTTP.Conduit as Http
import qualified Network.HTTP.Types as Http
import System.Directory (doesDirectoryExist, doesFileExist)
import System.FilePath (takeDirectory, takeExtension, (</>))
import qualified Text.HTML.TagSoup as TS
--------------------------------------------------------------------------------
import Hakyll.Core.Configuration
import Hakyll.Core.Logger (Logger)
import qualified Hakyll.Core.Logger as Logger
import Hakyll.Core.Util.File
import Hakyll.Web.Html
--------------------------------------------------------------------------------
data CheckerRead = CheckerRead
{ checkerConfig :: Configuration
, checkerLogger :: Logger
}
--------------------------------------------------------------------------------
data CheckerWrite = CheckerWrite
{ checkerFaulty :: Int
, checkerOk :: Int
} deriving (Show)
--------------------------------------------------------------------------------
instance Monoid CheckerWrite where
mempty = CheckerWrite 0 0
mappend (CheckerWrite f1 o1) (CheckerWrite f2 o2) =
CheckerWrite (f1 + f2) (o1 + o2)
--------------------------------------------------------------------------------
type Checker a = ReaderT CheckerRead (WriterT CheckerWrite IO) a
--------------------------------------------------------------------------------
runCheck :: Configuration -> IO ()
runCheck config = do
logger <- Logger.new (verbosity config)
let read' = CheckerRead config logger
((), write) <- runWriterT $ runReaderT check read'
Logger.header logger $ show write
Logger.flush logger
--------------------------------------------------------------------------------
check :: Checker ()
check = do
config <- checkerConfig <$> ask
files <- liftIO $ getRecursiveContents (destinationDirectory config)
let htmls =
[ destinationDirectory config </> file
| file <- files
, takeExtension file == ".html"
]
forM_ htmls checkFile
--------------------------------------------------------------------------------
checkFile :: FilePath -> Checker ()
checkFile filePath = do
logger <- checkerLogger <$> ask
contents <- liftIO $ readFile filePath
Logger.header logger $ "Checking " ++ filePath
let urls = getUrls $ TS.parseTags contents
forM_ urls $ \url ->
if isExternal url
then checkExternalUrl url
else checkInternalUrl filePath url
--------------------------------------------------------------------------------
ok :: String -> Checker ()
ok _ = tell $ mempty {checkerOk = 1}
--------------------------------------------------------------------------------
faulty :: String -> Checker ()
faulty url = do
logger <- checkerLogger <$> ask
Logger.error logger $ "Broken link to " ++ show url
tell $ mempty {checkerFaulty = 1}
--------------------------------------------------------------------------------
checkInternalUrl :: FilePath -> String -> Checker ()
checkInternalUrl base url = case url' of
"" -> ok url
_ -> do
config <- checkerConfig <$> ask
let dest = destinationDirectory config
dir = takeDirectory base
filePath
| "/" `isPrefixOf` url' = dest ++ url'
| otherwise = dir </> url'
exists <- checkFileExists filePath
if exists then ok url else faulty url
where
url' = stripFragments url
--------------------------------------------------------------------------------
checkExternalUrl :: String -> Checker ()
checkExternalUrl url = do
logger <- checkerLogger <$> ask
Logger.message logger $ "Not checking external url " ++ url
isOk <- liftIO $ handle failure $ Http.withManager $ \manager -> do
request <- Http.parseUrl url
response <- Http.http (settings request) manager
let code = Http.statusCode (Http.responseStatus response)
return $ code >= 200 && code < 300
if isOk then ok url else faulty url
where
settings r = r
{ Http.redirectCount = 10
, Http.responseTimeout = Just 10
}
failure :: SomeException -> IO Bool
failure e = print e >> return False
--------------------------------------------------------------------------------
-- | Wraps doesFileExist, also checks for index.html
checkFileExists :: FilePath -> Checker Bool
checkFileExists filePath = liftIO $ do
file <- doesFileExist filePath
dir <- doesDirectoryExist filePath
case (file, dir) of
(True, _) -> return True
(_, True) -> doesFileExist $ filePath </> "index.html"
_ -> return False
--------------------------------------------------------------------------------
stripFragments :: String -> String
stripFragments = takeWhile (not . flip elem ['?', '#'])
|
