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util/hex.lua @ 6613:2aae36312eb9
rostermanager, mod_roster, mod_presence: Move pending roster items to roster metadata field
author | Kim Alvefur <zash@zash.se> |
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date | Fri, 03 Apr 2015 06:38:22 +0200 |
parent | 6545:ec566d7cd518 |
child | 6802:442019e955dc |
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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 }