diff options
Diffstat (limited to '')
| -rw-r--r-- | HsbotIrcBot/Hsbot/Irc/Config.hs | 112 |
1 files changed, 64 insertions, 48 deletions
diff --git a/HsbotIrcBot/Hsbot/Irc/Config.hs b/HsbotIrcBot/Hsbot/Irc/Config.hs index ff14efd..186f139 100644 --- a/HsbotIrcBot/Hsbot/Irc/Config.hs +++ b/HsbotIrcBot/Hsbot/Irc/Config.hs @@ -4,6 +4,8 @@ module Hsbot.Irc.Config , getIrcConfig ) where +import Control.Monad.Error +import Data.Char (isDigit) import qualified Data.ConfigFile as C import Data.Either.Utils import Network @@ -46,7 +48,7 @@ ircDefaultConfig = IrcConfig , ircConfigPassword = "" , ircConfigRealname = "The One True bot, with it's haskell soul." , ircConfigCommandPrefix = '@' - , ircConfigPlugins = ["Ping"] + , ircConfigPlugins = ["Ping", "Core"] } -- | config file retrieving @@ -59,7 +61,7 @@ getIrcConfig maybePath = True -> do fileStatus <- getFileStatus path case isRegularFile $ fileStatus of - True -> compileIrcConfig ircDefaultConfig path + True -> getConfigFromFile path False -> do putStrLn "Invalid configuration file path." exitWith $ ExitFailure 1 @@ -68,51 +70,65 @@ getIrcConfig maybePath = exitWith $ ExitFailure 1 Nothing -> return ircDefaultConfig -- TODO : try defaults like $HOME/.hsbotrc, /etc/hsbotrc or /usr/local/etc/hsbotrc --- | config file parsing -compileIrcConfig :: IrcConfig -> String -> IO (IrcConfig) -compileIrcConfig ircConfig path = do - val <- C.readfile C.emptyCP path - let cp = forceEither val - let address = case C.get cp "IRC" "address" of - Right this -> this - Left _ -> ircConfigAddress ircConfig - let port = case C.get cp "IRC" "port" of - Right this -> PortNumber $ fromIntegral (read this :: Int) -- TODO error handling - Left _ -> ircConfigPort ircConfig - let channels = case C.get cp "IRC" "channels" of - Right this -> map (lstrip ' ') (split this ',') - Left _ -> ircConfigChannels ircConfig - let nickname = case C.get cp "IRC" "nickname" of - Right this -> this - Left _ -> ircConfigNickname ircConfig - let password = case C.get cp "IRC" "password" of - Right this -> this - Left _ -> ircConfigPassword ircConfig - let realname = case C.get cp "IRC" "realname" of - Right this -> this - Left _ -> ircConfigRealname ircConfig - let commandPrefix = case C.get cp "IRC" "commandPrefix" of - Right this -> head this -- TODO error handling - Left _ -> ircConfigCommandPrefix ircConfig - let plugins = case C.get cp "IRC" "plugins" of - Right this -> map (lstrip ' ') (split this ',') - Left _ -> ircConfigPlugins ircConfig - return ircConfig { ircConfigAddress = address - , ircConfigPort = port - , ircConfigChannels = channels - , ircConfigNickname = nickname - , ircConfigPassword = password - , ircConfigRealname = realname - , ircConfigCommandPrefix = commandPrefix - , ircConfigPlugins = plugins } +-- | Get configuration from config file +getConfigFromFile :: FilePath -> IO IrcConfig +getConfigFromFile fname = readfile C.emptyCP fname >>= extractConfig . forceEither + +-- | A version of readfile that treats the file as UTF-8 +readfile :: MonadError C.CPError m => C.ConfigParser -> FilePath -> IO (m C.ConfigParser) +readfile cp path' = do + contents <- readFile path' + return $ C.readstring cp contents + +-- | config file processing +extractConfig :: C.ConfigParser -> IO IrcConfig +extractConfig cp = do + config' <- runErrorT $ do + cfAddress <- getit "address" + cfPort <- getit "port" + cfChannels <- getit "channels" + cfNickname <- getit "nickname" + cfPassword <- getit "password" + cfRealname <- getit "realname" + cfCommandPrefix <- getit "commandprefix" + cfPlugins <- getit "plugins" + return $! IrcConfig { + ircConfigAddress = cfAddress + , ircConfigPort = PortNumber . fromIntegral $ readInteger "port" cfPort + , ircConfigChannels = splitCommaList cfChannels + , ircConfigNickname = cfNickname + , ircConfigPassword = cfPassword + , ircConfigRealname = cfRealname + , ircConfigCommandPrefix = readChar "commandprefix" cfCommandPrefix + , ircConfigPlugins = splitCommaList cfPlugins } + case config' of + Left (C.ParseError e, e') -> error $ "Parse error: " ++ e ++ "\n" ++ e' + Left e -> error (show e) + Right c -> return c where - split :: String -> Char -> [String] - split [] _ = [""] - split (c:cs) delim - | c == delim = "" : rest - | otherwise = (c : head rest) : tail rest - where rest = split cs delim - lstrip :: Char -> String -> String - lstrip x (c:cs) = if (x == c) then (lstrip x cs) else c:(lstrip x cs) - lstrip _ [] = [] + getit = C.get cp "IRC" + +readChar :: String -> String -> Char +readChar _ x | length x == 1 = head x +readChar opt _ = error $ opt ++ " must be one character long." + +readInteger :: String -> String -> Int +readInteger _ x | all isDigit x = read x ::Int +readInteger opt _ = error $ opt ++ " must be an integer." + +-- readNumber :: (Num a, Read a) => String -> String -> a +-- readNumber _ x | all isDigit x = read x +-- readNumber opt _ = error $ opt ++ " must be a number." + +splitCommaList :: String -> [String] +splitCommaList l = + let (first, rest) = break (== ',') l + first' = lrStrip first + in case rest of + [] -> if null first' then [] else [first'] + (_:rs) -> first' : splitCommaList rs + +lrStrip :: String -> String +lrStrip = reverse . dropWhile isWhitespace . reverse . dropWhile isWhitespace + where isWhitespace = (`elem` " \t\n") |