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|
-- | Module providing the main hakyll function and command-line argument parsing
--
{-# LANGUAGE CPP #-}
module Hakyll.Main
( hakyll
, hakyllWith
) where
import Control.Monad (when)
import System.Directory (doesDirectoryExist, removeDirectoryRecursive)
import System.Environment (getProgName, getArgs)
import System.Process (system)
import Hakyll.Core.Configuration
import Hakyll.Core.Identifier
import Hakyll.Core.Runtime
import Hakyll.Core.Rules
#ifdef PREVIEW_SERVER
import Control.Applicative ((<$>))
import Control.Concurrent (forkIO)
import qualified Data.Set as S
import Hakyll.Core.Rules.Internal
import Hakyll.Web.Preview.Poll
import Hakyll.Web.Preview.Server
#endif
-- | This usualy is the function with which the user runs the hakyll compiler
--
hakyll :: Rules a -> IO ()
hakyll = hakyllWith defaultConfiguration
-- | A variant of 'hakyll' which allows the user to specify a custom
-- configuration
--
hakyllWith :: Configuration -> Rules a -> IO ()
hakyllWith conf rules = do
args <- getArgs
case args of
["build"] -> build conf rules
["clean"] -> clean conf
["help"] -> help
["preview"] -> preview conf rules 8000
["preview", p] -> preview conf rules (read p)
["rebuild"] -> rebuild conf rules
["server"] -> server conf 8000
["server", p] -> server conf (read p)
["deploy"] -> deploy conf
_ -> help
-- | Build the site
--
build :: Configuration -> Rules a -> IO ()
build conf rules = do
_ <- run conf rules
return ()
-- | Remove the output directories
--
clean :: Configuration -> IO ()
clean conf = do
remove $ destinationDirectory conf
remove $ storeDirectory conf
where
remove dir = do
putStrLn $ "Removing " ++ dir ++ "..."
exists <- doesDirectoryExist dir
when exists $ removeDirectoryRecursive dir
-- | Show usage information.
--
help :: IO ()
help = do
name <- getProgName
mapM_ putStrLn
[ "ABOUT"
, ""
, "This is a Hakyll site generator program. You should always"
, "run it from the project root directory."
, ""
, "USAGE"
, ""
, name ++ " build Generate the site"
, name ++ " clean Clean up and remove cache"
, name ++ " help Show this message"
, name ++ " preview [port] Run a server and autocompile"
, name ++ " rebuild Clean up and build again"
, name ++ " server [port] Run a local test server"
, name ++ " deploy Upload/deploy your site"
, ""
]
#ifndef PREVIEW_SERVER
previewServerDisabled
#endif
-- | Preview the site
--
preview :: Configuration -> Rules a -> Int -> IO ()
#ifdef PREVIEW_SERVER
preview conf rules port = do
-- Fork a thread polling for changes
_ <- forkIO $ previewPoll conf update
-- Run the server in the main thread
server conf port
where
update = map toFilePath . S.toList . rulesResources <$> run conf rules
#else
preview _ _ _ = previewServerDisabled
#endif
-- | Rebuild the site
--
rebuild :: Configuration -> Rules a -> IO ()
rebuild conf rules = do
clean conf
build conf rules
-- | Start a server
--
server :: Configuration -> Int -> IO ()
#ifdef PREVIEW_SERVER
server conf port = do
let destination = destinationDirectory conf
staticServer destination preServeHook port
where
preServeHook _ = return ()
#else
server _ _ = previewServerDisabled
#endif
-- | Upload the site
--
deploy :: Configuration -> IO ()
deploy conf = do
_ <- system $ deployCommand conf
return ()
-- | Print a warning message about the preview serving not being enabled
--
#ifndef PREVIEW_SERVER
previewServerDisabled :: IO ()
previewServerDisabled =
mapM_ putStrLn
[ "PREVIEW SERVER"
, ""
, "The preview server is not enabled in the version of Hakyll. To"
, "enable it, set the flag to True and recompile Hakyll."
, "Alternatively, use an external tool to serve your site directory."
]
#endif
|
