tools/pas2c/Main.hs
author nemo
Fri, 09 Nov 2012 12:29:24 -0500
branchwebgl
changeset 8001 379063958821
parent 7979 a3974abc62d3
child 8836 7a474fcc343d
permissions -rw-r--r--
Fix why my first attempt to compile main had failed, causing me to ask koda what the secret was. apparently using an OS that ignores case...
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module Main( main ) where
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import System.Console.GetOpt
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import System.Environment
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import System.Exit
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import System.IO
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import Data.Maybe( fromMaybe )
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import Pas2C
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main = do
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    args <- getArgs
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    if length args == 0
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    then do
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        name <- getProgName
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        hPutStrLn stderr $ usageInfo header options
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        exitFailure
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    else do
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        case getOpt RequireOrder options args of
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          (flags, [],      [])     ->
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            if length args == 8 then do
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                hPutStrLn stdout $ "--------Pas2C Config--------"
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                hPutStrLn stdout $ "Main module: " ++ (args !! 1)
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                hPutStrLn stdout $ "Input path : " ++ (args !! 3)
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                hPutStrLn stdout $ "Output path: " ++ (args !! 5)
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                hPutStrLn stdout $ "Altern path: " ++ (args !! 7)
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                hPutStrLn stdout $ "----------------------------"
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                pas2C (args !! 1) ((args !! 3)++"/") ((args !! 5)++"/") ((args !! 7)++"/")
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                hPutStrLn stdout $ "----------------------------"
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            else do
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                if length args == 6 then do
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                    hPutStrLn stdout $ "--------Pas2C Config--------"
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                    hPutStrLn stdout $ "Main module: " ++ (args !! 1)
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                    hPutStrLn stdout $ "Input path : " ++ (args !! 3)
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                    hPutStrLn stdout $ "Output path: " ++ (args !! 5)
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                    hPutStrLn stdout $ "Altern path: " ++ "./"
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                    hPutStrLn stdout $ "----------------------------"
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                    pas2C (args !! 1) ((args !! 3)++"/") ((args !! 5)++"/") "./"
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                    hPutStrLn stdout $ "----------------------------"
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                else do
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                    error $ usageInfo header options
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          (_,     nonOpts, [])     -> error $ "unrecognized arguments: " ++ unwords nonOpts
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          (_,     _,       msgs)   -> error $ usageInfo header options
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    where header = "Freepascal to C conversion! Please use -n -i -o -a options in this order.\n"
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data Flag = HelpMessage | Name String | Input String | Output String | Alternate String
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options :: [OptDescr Flag]
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options = [
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    Option ['h'] ["help"]      (NoArg HelpMessage)      "print this help message",
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    Option ['n'] ["name"]      (ReqArg Name "MAIN")     "name of the main Pascal module",
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    Option ['i'] ["input"]     (ReqArg Input "DIR")     "input directory, where .pas files will be read",
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    Option ['o'] ["output"]    (ReqArg Output "DIR")    "output directory, where .c/.h files will be written",
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    Option ['a'] ["alternate"] (ReqArg Alternate "DIR") "alternate input directory, for out of source builds"
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  ]
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