File

util/hex.lua @ 6705:c269ab6ab98a

Merge 0.10->trunk
author Kim Alvefur <zash@zash.se>
date Fri, 15 May 2015 15:33:31 +0200
parent 6545:ec566d7cd518
child 6802:442019e955dc
line wrap: on
line source

local s_char = string.char;
local s_format = string.format;
local s_gsub = string.gsub;

local char_to_hex = {};
local hex_to_char = {};

do
	local char, hex;
	for i = 0,255 do
		char, hex = s_char(i), s_format("%02x", i);
		char_to_hex[char] = hex;
		hex_to_char[hex] = char;
	end
end

local function to(s)
	return (s_gsub(s, ".", char_to_hex));
end

local function from(s)
	return (s_gsub(s, "..", hex_to_char));
end

return { to = to, from = from }