File

util/hex.lua @ 12198:341bc2081bb7

tools/xep227toprosody: Remove obsolete tool in favor of storage driver This tool hasn't been updated for recent XEP-0227 changes, hasn't seen many changes at all since its introduction and I don't remember anyone mentioning ever using it. Using mod_storage_xmlarchive and the migrator or the 3rd party mod_migrate tool should work better these days and should be the way forward.
author Kim Alvefur <zash@zash.se>
date Tue, 18 Jan 2022 15:43:17 +0100
parent 6802:442019e955dc
child 12355:a0ff5c438e9d
line wrap: on
line source

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

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_lower(s), "%X*(%x%x)%X*", hex_to_char));
end

return { to = to, from = from }