local bExit = false

function eDecode(test)
	local tCommandHistory = {}
	test = io.open(test, "r")

	for sLine in test:lines() do
		table.insert( tCommandHistory, sLine )

		local tWords = {}
		for match in string.gmatch(sLine, "[^ \t]+") do
			table.insert( tWords, match )
		end

		eBatch(tWords, false, sLine)
	end
	test.close()
end

function eBatch(tWords, test, full)
	local sCommand = tWords[1]
	if sCommand == "echo" then
		if tWords[2] then
			print(string.sub(full, 6, string.len(full)))
			if test == false then
				print()
			end
		else
			if test == false then
				print("ECHO is on.")
			end
		end
	elseif sCommand == "exit" then
		bExit = true
	elseif sCommand == "cmd" then
		print("NeXuS Windows [Version 1.1.0001]")
		print("Copyright (c) NeXuS Corporation. All rights reserved.\n")
	elseif sCommand == "pause" then
		print("Press any key to continue.")
		os.pullEvent("key")
		sleep(0)
	elseif sCommand == "cls" then
		term.clear()
		term.setCursorPos(1,1)
	elseif sCommand == "dir" then
		shell.run("rom/programs/list")
	elseif sCommand == "del" then
		if tWords[2] then
			if fs.exists(tWords[2]) then
				if fs.isReadOnly(tWords[2]) then
					print("Could Not Find C:\\Users\\Admin\\" ..tWords[2].. "\n")
				else
					fs.delete( tWords[2] )
				end
			else
				print("Could Not Find C:\\Users\\Admin\\" ..tWords[2].. "\n")
			end
		else
			print("Could Not Find C:\\AppData\\Earth\\Users\\You\\Brain.exe\n")
		end
	elseif sCommand == "execute" then --just made this one up, might not exist
			if tWords[2] then
			if fs.exists(tWords[2]) then
				eDecode(tWords[2])
			else
				print("Could Not Find C:\\Users\\Admin\\" ..tWords[2])
			end
			end
	elseif sCommand == "title" then
		return tWords[2] --Title is pretty much useless here, so i'll just return what they typed for other's programs.
	else
		print("'"..sCommand.."' is not recognized as a internal or external command, operable program or batch file. \n")
	end
end

print("NeXuS Windows [Version 1.1.0001]")
print("Copyright (c) NeXuS Corporation. All rights reserved.\n")

local tCommandHistory = {}
while not bExit do
	write( "C:\\Users\\Admin> " )

	local sLine = read( nil, tCommandHistory )
	table.insert( tCommandHistory, sLine )

	local tWords = {}
	for match in string.gmatch(sLine, "[^ \t]+") do
		table.insert( tWords, match )
	end

	eBatch(tWords, false, sLine)
end