module Yi.Keymap.Vim2.Ex.Commands.Buffers
( parse
) where
import Control.Applicative
import Control.Monad
import Control.Lens
import Data.List
import qualified Data.Map as M
import qualified Text.ParserCombinators.Parsec as P
import Yi.Monad
import Yi.Editor
import Yi.Buffer.Basic
import Yi.Buffer.Misc
import Yi.Keymap
import Yi.Keymap.Vim2.Ex.Types
import qualified Yi.Keymap.Vim2.Ex.Commands.Common as Common
import qualified Data.Rope as R
parse :: String -> Maybe ExCommand
parse = Common.parse $ do
void $ P.try ( P.string "buffers") <|> P.try ( P.string "ls") <|> P.try ( P.string "files" )
return $ Common.pureExCommand {
cmdShow = "buffers"
, cmdAction = EditorA $ withEditor printBuffers
}
printBuffers :: EditorM ()
printBuffers = do
bufs <- gets buffers
let bufLines = M.elems $ M.mapWithKey bufLine bufs
if length bufLines > 1
then withEditor . void $
newBufferE (Left "Buffer list")
(R.fromString $ intercalate "\n" bufLines)
else printMsgs bufLines
where
bufLine (BufferRef bufNum) buf =
intercalate "\t" [ show bufNum
, show . view identA $ buf
]