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module Utility.Emacs ( getEmacsOutput
, parseEmacsOutput) where
import Control.Applicative ((<$>))
import Control.Monad (when, foldM)
import Data.Maybe.Read
import System.Directory (getHomeDirectory)
import System.Process (readProcess)
import Text.Regex.Posix ((=~))
import Types.Reminder
parseEmacsOutput :: String -> [Reminder]
parseEmacsOutput = foldr step [] . drop 2 . lines
where
step line rems = maybe rems (++ rems) $ parseLine line
parseLine :: String -> Maybe [Reminder]
parseLine line = do
when (not lineMatch) $ fail ""
let hStr:mStr:s:[] = drop 1 . concat $ lineMatchStrings
h <- readMaybe hStr
m <- readMaybe mStr
staggeredReminders =<< makeReminder h m s
where
apptRegexp = " ([0-9]{1,2}):([0-9][0-9])[-]{0,1}[0-9:]{0,5}[.]* (.*)$"
snipRegexp = "[ ]{2,}:.*:*$"
lineMatch = line =~ apptRegexp :: Bool
lineMatchStrings = line =~ apptRegexp :: [[String]]
staggeredReminders :: Reminder -> Maybe [Reminder]
staggeredReminders r = undefined
-- staggeredReminders :: Int -> Int -> String -> [Reminder]
-- staggeredReminders hour mins text = foldl' step [] [60, 15, 0]
-- where step rems diff = let hour'
-- | diff > mins = hour - 1
-- | otherwise = hour
-- -- could do with addition mod 60
-- mins'
-- | mins >= diff = mins - diff
-- | otherwise = 60 + (mins - diff)
-- in rems ++ [Reminder hour' mins' text]
getEmacsOutput :: IO String
getEmacsOutput = do
args <- makeEmacsArgs <$> getHomeDirectory
readProcess "emacs" args ""
makeEmacsArgs :: String -> [String]
makeEmacsArgs home = [ "-batch"
, "-l", home ++ "/.emacs.d/init.el"
, "-eval", "(setq org-agenda-sticky nil)"
, "-eval", "(org-batch-agenda \"D\")" ]
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