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|
module CommandL where
import Operations
import UseIO
import CMacros
import GetTree
import ShellState
import Option
import Session
import Commands
import Char
import List (intersperse)
import UTF8
-- a line-based shell
initEditLoop :: CEnv -> IO () -> IO ()
initEditLoop env resume = do
let env' = startEditEnv env
putStrLnFlush $ initEditMsg env'
let state = initSStateEnv env'
putStrLnFlush $ showCurrentState env' state
editLoop env' state resume
editLoop :: CEnv -> SState -> IO () -> IO ()
editLoop env state resume = do
putStrFlush "edit> "
c <- getCommand
if (isQuit c) then resume else do
(env',state') <- execCommand env c state
let package = case c of
CCEnvEmptyAndImport _ -> initEditMsgEmpty env'
_ -> showCurrentState env' state'
putStrLnFlush package
editLoop env' state' resume
getCommand :: IO Command
getCommand = do
s <- getLine
return $ pCommand s
-- decodes UTF8 if u==False, i.e. if the grammar does not use UTF8;
-- used in the Java GUI, which always uses UTF8
getCommandUTF :: Bool -> IO Command
getCommandUTF u = do
s <- getLine
return $ pCommand $ if u then s else decodeUTF8 s
pCommand = pCommandWords . words where
pCommandWords s = case s of
"n" : cat : _ -> CNewCat cat
"t" : ws -> CNewTree $ unwords ws
"g" : ws -> CRefineWithTree $ unwords ws -- *g*ive
"p" : ws -> CRefineParse $ unwords ws
"rc": i : _ -> CRefineWithClip (readIntArg i)
">" : i : _ -> CAhead $ readIntArg i
">" : [] -> CAhead 1
"<" : i : _ -> CBack $ readIntArg i
"<" : [] -> CBack 1
">>" : _ -> CNextMeta
"<<" : _ -> CPrevMeta
"'" : _ -> CTop
"+" : _ -> CLast
"mp" : p -> CMovePosition (readIntList (unwords p))
"r" : f : _ -> CRefineWithAtom f
"w" : f:i : _ -> CWrapWithFun (f, readIntArg i)
"ch": f : _ -> CChangeHead f
"ph": f:i : _ -> CPeelHead (f, readIntArg i)
"x" : ws -> CAlphaConvert $ unwords ws
"s" : i : _ -> CSelectCand (readIntArg i)
"f" : "unstructured" : _ -> CRemoveOption showStruct --- hmmm
"f" : "structured" : _ -> CAddOption showStruct --- hmmm
"f" : s : _ -> CAddOption (filterString s)
"u" : _ -> CUndo
"d" : _ -> CDelete
"ac" : _ -> CAddClip
"c" : s : _ -> CTermCommand s
"a" : _ -> CRefineRandom --- *a*leatoire
"m" : _ -> CMenu
"ml" : s : _ -> changeMenuLanguage s
"ms" : s : _ -> changeMenuSize s
"mt" : s : _ -> changeMenuTyped s
"v" : _ -> CView
"q" : _ -> CQuit
"h" : _ -> CHelp initEditMsg
"i" : file: _ -> CCEnvImport file
"e" : [] -> CCEnvEmpty
"e" : file: _ -> CCEnvEmptyAndImport file
"open" : f: _ -> CCEnvOpenTerm f
"openstring": f: _ -> CCEnvOpenString f
"on" :lang: _ -> CCEnvOn lang
"off":lang: _ -> CCEnvOff lang
"pfile" :f:_ -> CCEnvRefineParse f
"tfile" :f:_ -> CCEnvRefineWithTree f
-- openstring file
-- pfile file
-- tfile file
-- on lang
-- off lang
"gf": comm -> CCEnvGFShell (unwords comm)
[] -> CVoid
_ -> CError
-- well, this lists the commands of the line-based editor
initEditMsg env = unlines $
"State-dependent editing commands are given in the menu:" :
" n [Cat] = new, r [Fun] = refine, w [Fun] [Int] = wrap,":
" ch [Fun] = change head, d = delete, s [Int] = select," :
" x [Var] [Var] = alpha convert." :
"Commands changing the environment:" :
" i [file] = import, e = empty." :
"Other commands:" :
" a = random, v = change view, u = undo, h = help, q = quit," :
" ml [Lang] = change menu language," :
" ms (short | long) = change menu command size," :
" mt (typed | untyped) = change menu item typing," :
" p [string] = refine by parsing, g [term] = refine by term," :
" > = down, < = up, ' = top, >> = next meta, << = previous meta." :
---- (" c [" ++ unwords (intersperse "|" allTermCommands) ++ "] = modify term") :
---- (" f [" ++ unwords (intersperse "|" allStringCommands) ++ "] = modify output") :
[]
initEditMsgEmpty env = initEditMsg env +++++ unlines (
"Start editing by n Cat selecting category\n\n" :
"-------------\n" :
["n" +++ cat | (_,cat) <- newCatMenu env]
)
showCurrentState env' state' =
unlines (tr ++ ["",""] ++ msg ++ ["",""] ++ map fst menu)
where (tr,msg,menu) = displaySStateIn env' state'
-- to read position; borrowed from Prelude; should be elsewhere
readIntList :: String -> [Int]
readIntList s = case [x | (x,t) <- reads s, ("","") <- lex t] of
[x] -> x
_ -> []
|
