From 08b21acff1ca397e775e926e0f9a96deaa9820fd Mon Sep 17 00:00:00 2001
From: Taylor Gerring <taylor.gerring@gmail.com>
Date: Sun, 22 Mar 2015 13:32:52 +0100
Subject: Move ToHex/FromHex into bytes

---
 common/bytes.go | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'common/bytes.go')

diff --git a/common/bytes.go b/common/bytes.go
index 5e553d23c..2d885ac74 100644
--- a/common/bytes.go
+++ b/common/bytes.go
@@ -9,6 +9,28 @@ import (
 	"strings"
 )
 
+func ToHex(b []byte) string {
+	hex := Bytes2Hex(b)
+	// Prefer output of "0x0" instead of "0x"
+	if len(hex) == 0 {
+		hex = "0"
+	}
+	return "0x" + hex
+}
+
+func FromHex(s string) []byte {
+	if len(s) > 1 {
+		if s[0:2] == "0x" {
+			s = s[2:]
+		}
+		if len(s)%2 == 1 {
+			s = "0" + s
+		}
+		return Hex2Bytes(s)
+	}
+	return nil
+}
+
 type Bytes []byte
 
 func (self Bytes) String() string {
-- 
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