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--------------------------------------------------------------------------------
-- | Implements a basic static file server for previewing options
{-# LANGUAGE OverloadedStrings #-}
module Hakyll.Preview.Server
( staticServer
) where
--------------------------------------------------------------------------------
import Control.Monad.Trans (liftIO)
import qualified Data.ByteString.Char8 as B
import qualified Snap.Core as Snap
import qualified Snap.Http.Server as Snap
import qualified Snap.Util.FileServe as Snap
--------------------------------------------------------------------------------
import Hakyll.Core.Logger (Logger)
import qualified Hakyll.Core.Logger as Logger
--------------------------------------------------------------------------------
-- | Serve a given directory
static :: FilePath -- ^ Directory to serve
-> (FilePath -> IO ()) -- ^ Pre-serve hook
-> Snap.Snap ()
static directory preServe =
Snap.serveDirectoryWith directoryConfig directory
where
directoryConfig :: Snap.DirectoryConfig Snap.Snap
directoryConfig = Snap.fancyDirectoryConfig
{ Snap.preServeHook = liftIO . preServe
}
--------------------------------------------------------------------------------
-- | Main method, runs a static server in the given directory
staticServer :: Logger -- ^ Logger
-> FilePath -- ^ Directory to serve
-> (FilePath -> IO ()) -- ^ Pre-serve hook
-> String -- ^ Host to bind on
-> Int -- ^ Port to listen on
-> IO () -- ^ Blocks forever
staticServer logger directory preServe host port = do
Logger.header logger $ "Listening on http://" ++ host ++ ":" ++ show port
Snap.httpServe config $ static directory preServe
where
-- Snap server config
config = Snap.setBind (B.pack host)
$ Snap.setPort port
$ Snap.setAccessLog Snap.ConfigNoLog
$ Snap.setErrorLog Snap.ConfigNoLog
$ Snap.setVerbose False
$ Snap.emptyConfig
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