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module GF.Command.Commands (
allCommands,
lookCommand,
exec,
isOpt,
options,
flags,
CommandInfo,
CommandOutput
) where
import GF.Command.AbsGFShell
import GF.Command.PPrTree
import GF.Command.ParGFShell
import PGF
import PGF.CId
import PGF.ShowLinearize
import PGF.Macros
import PGF.Data ----
import GF.Compile.Export
import GF.Data.ErrM ----
import qualified Data.Map as Map
type CommandOutput = ([Exp],String) ---- errors, etc
data CommandInfo = CommandInfo {
exec :: [Option] -> [Exp] -> IO CommandOutput,
synopsis :: String,
explanation :: String,
longname :: String,
options :: [String],
flags :: [String]
}
emptyCommandInfo :: CommandInfo
emptyCommandInfo = CommandInfo {
exec = \_ ts -> return (ts,[]), ----
synopsis = "synopsis",
explanation = "explanation",
longname = "longname",
options = [],
flags = []
}
lookCommand :: String -> Map.Map String CommandInfo -> Maybe CommandInfo
lookCommand = Map.lookup
commandHelpAll :: PGF -> [Option] -> String
commandHelpAll pgf opts = unlines
[commandHelp (isOpt "full" opts) (co,info)
| (co,info) <- Map.assocs (allCommands pgf)]
commandHelp :: Bool -> (String,CommandInfo) -> String
commandHelp full (co,info) = unlines $ [
co ++ ", " ++ longname info,
synopsis info] ++ if full then [
explanation info,
"options: " ++ unwords (options info),
"flags: " ++ unwords (flags info)
] else []
valIdOpts :: String -> String -> [Option] -> String
valIdOpts flag def opts = case valOpts flag (VId (Ident def)) opts of
VId (Ident v) -> v
_ -> def
valIntOpts :: String -> Integer -> [Option] -> Int
valIntOpts flag def opts = fromInteger $ case valOpts flag (VInt def) opts of
VInt v -> v
_ -> def
valOpts :: String -> Value -> [Option] -> Value
valOpts flag def opts = case lookup flag flags of
Just v -> v
_ -> def
where
flags = [(f,v) | OFlag (Ident f) v <- opts]
isOpt :: String -> [Option] -> Bool
isOpt o opts = elem o [x | OOpt (Ident x) <- opts]
-- this list must be kept sorted by the command name!
allCommands :: PGF -> Map.Map String CommandInfo
allCommands pgf = Map.fromAscList [
("gr", emptyCommandInfo {
longname = "generate_random",
synopsis = "generates a list of random trees, by default one tree",
flags = ["cat","number"],
exec = \opts _ -> do
ts <- generateRandom pgf (optCat opts)
return $ fromTrees $ take (optNum opts) ts
}),
("gt", emptyCommandInfo {
longname = "generate_trees",
synopsis = "generates a list of trees, by default exhaustive",
flags = ["cat","depth","number"],
exec = \opts _ -> do
let dp = return $ valIntOpts "depth" 4 opts
let ts = generateAllDepth pgf (optCat opts) dp
return $ fromTrees $ take (optNumInf opts) ts
}),
("h", emptyCommandInfo {
longname = "help",
synopsis = "get description of a command, or a the full list of commands",
options = ["full"],
exec = \opts ts -> return ([], case ts of
[t] -> let co = showExp t in
case lookCommand co (allCommands pgf) of ---- new map ??!!
Just info -> commandHelp True (co,info)
_ -> "command not found"
_ -> commandHelpAll pgf opts)
}),
("l", emptyCommandInfo {
exec = \opts -> return . fromStrings . map (optLin opts),
options = ["all","record","table","term"],
flags = ["lang"]
}),
("p", emptyCommandInfo {
exec = \opts -> return . fromTrees . concatMap (par opts). toStrings,
flags = ["cat","lang"]
}),
("pg", emptyCommandInfo {
exec = \opts _ -> return $ fromString $ prGrammar opts,
flags = ["cat","lang","printer"]
})
]
where
lin opts t = unlines [linearize pgf lang t | lang <- optLangs opts]
par opts s = concat [parse pgf lang (optCat opts) s | lang <- optLangs opts]
optLin opts t = unlines [linea lang t | lang <- optLangs opts] where
linea lang = case opts of
_ | isOpt "all" opts -> allLinearize pgf (mkCId lang)
_ | isOpt "table" opts -> tableLinearize pgf (mkCId lang)
_ | isOpt "term" opts -> termLinearize pgf (mkCId lang)
_ | isOpt "record" opts -> recordLinearize pgf (mkCId lang)
_ -> linearize pgf lang
optLangs opts = case valIdOpts "lang" "" opts of
"" -> languages pgf
lang -> [lang]
optCat opts = valIdOpts "cat" (lookStartCat pgf) opts
optNum opts = valIntOpts "number" 1 opts
optNumInf opts = valIntOpts "number" 1000000000 opts ---- 10^9
fromTrees ts = (ts,unlines (map showExp ts))
fromStrings ss = (map EStr ss, unlines ss)
fromString s = ([EStr s], s)
toStrings ts = [s | EStr s <- ts]
prGrammar opts = case valIdOpts "printer" "" opts of
"cats" -> unwords $ categories pgf
v -> prPGF (read v) pgf
|
