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<oerjan> learn print_args_or_input Is a utility command that makes it easy to create a shell script that can be used either as a pipe or directly as a HackEgo command. Use as print_args_or_input "$@" | yourShellCode . See also shebang_args_or_input.
author HackBot
date Sat, 22 Jul 2017 00:45:19 +0000
parents 859f9b4339e6
children
line wrap: on
line source

module Main ()
where

import System.IO
import System.Environment
import System.Exit

import Misc
import Parser
import Evaluator



main	:: IO ()
main	= 	(hSetBuffering stdout NoBuffering) >> getArgs >>= \args ->
			if length args /= 1 then usage
			else readFile (head args) `catch` (\ _ -> putStr "Error: Couldn't open source file.\n" >> exitWith (ExitFailure 1))
				>>= \source ->
					interact (run source)
					
run					:: String -> String -> String
run source input	= nodeTreeToString (evaluate (apply (parse source) (stringToNodeTree input)))
				
						
				
usage	:: IO ()
usage	= putStr "Usage: rhotorhi sourcecode.rho\n"