| definition: |
processOptions :: [String] -> IO (Options,String)
processOptions argv = do
let (funopts, args, opterrors) = getOpt Permute options argv
opts = foldl (flip id) defaultOptions funopts
unless (null opterrors)
(putStr (unlines opterrors) >> printUsage >> exitWith 1)
when (optHelp opts) (printUsage >> exitWith 0)
case args of
[p] -> let mname = stripCurrySuffix p
opts1 = opts { optFormMods = nub (optFormMods opts ++ [mname])
, optMain = if null (optMain opts)
then mname ++ ".main"
else optMain opts }
in return (opts1, mname)
[] -> error $ "Name of main module missing!"
_ -> error $ "Too many main modules: " ++ unwords args ++
"\nPlease provide only one main module!"
where
printUsage = putStrLn (banner ++ "\n" ++ usageText)
|
| demand: |
no demanded arguments |
| deterministic: |
deterministic operation |
| documentation: |
--- Process the actual command line argument and return the options --- and the name of the main program. |
| failfree: |
_ |
| indeterministic: |
referentially transparent operation |
| infix: |
no fixity defined |
| iotype: |
{(_) |-> _}
|
| name: |
processOptions |
| precedence: |
no precedence defined |
| result-values: |
_ |
| signature: |
[String] -> Prelude.IO (Options, String) |
| solution-complete: |
operation might suspend on free variables |
| terminating: |
possibly non-terminating |
| totally-defined: |
possibly non-reducible on same data term |