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{-# LANGUAGE Rank2Types, FlexibleContexts #-}
Copyright (C) 2008 John MacFarlane <>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
module Main where
import Network.Gitit
import Network.Gitit.Server
import Network.Gitit.Initialize (createStaticIfMissing, createRepoIfMissing)
import Prelude hiding (writeFile, readFile, catch)
import System.Directory
import System.FilePath ((</>))
import Control.Concurrent
import Network.Gitit.Config (getConfigFromOpts)
import Data.Maybe (isNothing)
import qualified Data.Map as M
import System.IO.UTF8 (readFile)
import Control.Monad.Reader
import System.Log.Logger (logM, Priority(..), setLevel, setHandlers,
getLogger, saveGlobalLogger)
import System.Log.Handler.Simple (fileHandler)
import Data.Char (toLower)
import Paths_gitit
main :: IO ()
main = do
-- parse options to get config file
conf <- getConfigFromOpts
-- check for external programs that are needed
let repoProg = map toLower $ show $ repositoryType conf
let prereqs = ["grep", repoProg]
forM_ prereqs $ \prog ->
findExecutable prog >>= \mbFind ->
when (isNothing mbFind) $ error $
"Required program '" ++ prog ++ "' not found in system path."
-- read user file and update state
userFileExists <- doesFileExist $ userFile conf
users' <- if userFileExists
then liftM (M.fromList . read) $ readFile $ userFile conf
else return M.empty
-- set up logging
let level = if debugMode conf then DEBUG else logLevel conf
logFileHandler <- fileHandler (logFile conf) level
serverLogger <- getLogger "Happstack.Server"
-- TODO changes to "Happstack.Server.AccessLog.Combined" for 0.3
gititLogger <- getLogger "gitit"
saveGlobalLogger $ setLevel level $ setHandlers [logFileHandler] serverLogger
saveGlobalLogger $ setLevel level $ setHandlers [logFileHandler] gititLogger
jsMathExists <- liftIO $ doesFileExist $
staticDir conf </> "js" </> "jsMath" </> "easy" </> "load.js"
logM "gitit" NOTICE $
if jsMathExists
then "Found jsMath scripts -- using jsMath"
else "Did not find jsMath scripts -- not using jsMath"
let conf' = conf{jsMath = jsMathExists, logLevel = level}
-- load plugins
let loadPluginAndLog plg = logM "gitit" WARNING ("Loading plugin '" ++ plg ++ "'...") >> loadPlugin plg
plugins' <- mapM loadPluginAndLog (pluginModules conf')
unless (null $ pluginModules conf') $ logM "gitit" WARNING "Finished loading plugins."
-- initialize state
initializeGititState users' plugins'
-- setup the page repository and static files, if they don't exist
createRepoIfMissing conf'
let staticdir = staticDir conf'
createStaticIfMissing staticdir
-- create template file if it doesn't exist
templateExists <- doesFileExist (templateFile conf')
unless templateExists $ do
templatePath <- getDataFileName $ "data" </> "template.html"
copyFile templatePath (templateFile conf')
logM "gitit" WARNING $ "Created default " ++ templateFile conf'
let serverConf = Conf { validator = Nothing, port = portNumber conf' }
-- start the server
tid <- forkIO $ simpleHTTP serverConf $ wikiHandler conf'
-- shut down the server
killThread tid
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