nil out CurrentHedgehog in FreeModule, add a test for nil'd CurrentHedgehog in DelCI since I'd still like to use DeleteGear for the other stuff it does. Move some variable initialiasations in AI Misc to hopefully avoid some uninit val errors.
-- Module : Data.TConfig
-- Copyright : (c) Anthony Simpson 2009
-- License : BSD3
--
-- Maintainer : DiscipleRayne@gmail.com
-- Stability : relatively stable
-- Portability : portable
---------------------------------------------------
{-|
A small and simple text file configuration
library written in Haskell. It is similar
to the INI file format, but lacks a few of
it's features, such as sections. It is
suitable for simple games that need to
keep track of certain information between
plays.
-}
module Data.TConfig
(
getValue
, repConfig
, readConfig
, writeConfig
, remKey
, addKey
, Conf ()
) where
import Data.Char
import qualified Data.Map as M
import Control.Monad
type Key = String
type Value = String
type Conf = M.Map Key Value
-- |Adds a key and value to the end of the configuration.
addKey :: Key -> Value -> Conf -> Conf
addKey = M.insert
-- |Utility function.
-- Removes a key and its value from the configuration.
remKey :: Key -> Conf -> Conf
remKey = M.delete
-- |Utility function. Searches a configuration for a
-- key, and returns its value.
getValue :: Key -> Conf -> Maybe Value
getValue = M.lookup
-- |Utility function. Replaces the value
-- associated with a key in a configuration.
repConfig :: Key -> Value -> Conf -> Conf
repConfig k rv conf = let f _ = Just rv
in M.alter f k conf
-- |Reads a file and parses to a Map String String.
readConfig :: FilePath -> IO Conf
readConfig path = liftM (M.fromList . map ((\(a, b) -> (filter (not . isSpace) a, dropWhile isSpace $ tail b)) . break (== '=')) . filter (not . null) . lines) $ readFile path
-- |Parses a parsed configuration back to a file.
writeConfig :: FilePath -> Conf -> IO ()
writeConfig path = writeFile path . unlines . map (\(a, b) -> a ++ " = " ++ b) . M.toList