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30 lines
556 B
30 lines
556 B
local s_char = string.char;
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local s_format = string.format;
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local s_gsub = string.gsub;
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local s_lower = string.lower;
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local char_to_hex = {};
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local hex_to_char = {};
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do
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local char, hex;
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for i = 0,255 do
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char, hex = s_char(i), s_format("%02x", i);
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char_to_hex[char] = hex;
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hex_to_char[hex] = char;
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end
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end
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local function to(s)
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return (s_gsub(s, ".", char_to_hex));
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end
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local function from(s)
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return (s_gsub(s_lower(s), "%X*(%x%x)%X*", hex_to_char));
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end
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return {
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encode = to, decode = from;
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-- COMPAT w/pre-0.12:
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to = to, from = from;
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};
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