File

+
−local s_char = string.char;
+
−
+
−local function char_to_hex(c)
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−	return ("%02x"):format(c:byte())
+
−end
+
−
+
−local function hex_to_char(h)
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−	return s_char(tonumber(h, 16));
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−end
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−
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−local function to(s)
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−	return s:gsub(".", char_to_hex);
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−end
+
−
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−local function from(s)
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−	return s:gsub("..", hex_to_char);
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−end
+
−
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−return { to = to, from = from }