From 56b4c1c856f107e178aede2313d943022ad3c73d Mon Sep 17 00:00:00 2001
From: Matthew Wild <mwild1@gmail.com>
Date: Tue, 2 Sep 2014 17:56:42 +0100
Subject: util.hex: Small util lib for converting to/from hex strings

---
 util/hex.lua | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 util/hex.lua

(limited to 'util')

diff --git a/util/hex.lua b/util/hex.lua
new file mode 100644
index 00000000..72fc22bd
--- /dev/null
+++ b/util/hex.lua
@@ -0,0 +1,19 @@
+local s_char = string.char;
+
+local function char_to_hex(c)
+	return ("%02x"):format(c:byte())
+end
+
+local function hex_to_char(h)
+	return s_char(tonumber(h, 16));
+end
+
+function to(s)
+	return s:gsub(".", char_to_hex);
+end
+
+function from(s)
+	return s:gsub("..", hex_to_char);
+end
+
+return { to = to, from = from }
-- 
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