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util/hex.lua @ 12546:e78b35574aae
util.watchdog: Allow :reset() to restart a cancelled watchdog
author | Matthew Wild <mwild1@gmail.com> |
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date | Sat, 11 Jun 2022 22:15:14 +0100 |
parent | 12355:a0ff5c438e9d |
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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 { encode = to, decode = from; -- COMPAT w/pre-0.12: to = to, from = from; };