module Yi.Keymap.Vim.Ex.Commands.Buffers (parse) where
import Control.Applicative
import Control.Lens
import Control.Monad
import qualified Data.Map as M
import qualified Data.Text as T
import qualified Text.ParserCombinators.Parsec as P
import Yi.Buffer.Basic
import Yi.Buffer.Misc
import Yi.Editor
import Yi.Keymap
import Yi.Keymap.Vim.Common
import qualified Yi.Keymap.Vim.Ex.Commands.Common as Common
import Yi.Keymap.Vim.Ex.Types
import Yi.Monad
import Yi.Rope (fromText)
parse :: EventString -> 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 (MemBuffer "Buffer list")
(fromText $ T.unlines bufLines)
else printMsgs bufLines
where
tab = T.pack "\t"
bufLine (BufferRef bufNum) buf =
T.intercalate tab [ T.pack . show $ bufNum
, T.pack . show . view identA $ buf
]