CHG: minor code clean up.

[proxmark3-svn] / client / lualibs / utils.lua

--[[\r
	This may be moved to a separate library at some point (Holiman)\r
--]]\r
local Utils = \r
{\r
	-- Asks the user for Yes or No\r
	confirm = function(message, ...)\r
		local answer\r
		message = message .. " [y/n] ?"\r
		repeat\r
			io.write(message)\r
			io.flush()\r
			answer=io.read()\r
			if answer == 'Y' or answer == "y" then\r
				return true\r
			elseif answer == 'N' or answer == 'n' then \r
				return false\r
			end\r
		until false\r
	end,\r
	---\r
	-- Asks the user for input\r
	input = function (message , default)\r
		local answer\r
		if default ~= nil then\r
			message = message .. " (default: ".. default.. " )"\r
		end\r
		message = message .." \n > "\r
		io.write(message)\r
		io.flush()\r
		answer=io.read()\r
		if answer == '' then answer = default end\r
\r
		return answer\r
	end,\r
	--\r
	-- Converts DECIMAL to HEX\r
    ConvertDec2Hex = function(IN)\r
		local B,K,OUT,I,D=16,"0123456789ABCDEF","",0\r
		while IN>0 do\r
			I=I+1\r
			IN,D=math.floor(IN/B),math.mod(IN,B)+1\r
			OUT=string.sub(K,D,D)..OUT\r
		end\r
		return OUT\r
	end,\r
	---\r
	-- Convert Byte array to string of hex\r
	ConvertBytes2String = function(bytes)\r
		s = {}\r
		for i = 1, #(bytes) do\r
			s[i] =   string.format("%02X",bytes[i]) \r
		end\r
		return table.concat(s)\r
	end,	\r
}\r
return Utils