From 79470a297c990f246e2d091ef9e7e62ca10fa03f Mon Sep 17 00:00:00 2001
From: Arthur Britto <ahbritto@gmail.com>
Date: Sun, 29 Apr 2012 12:58:23 -0700
Subject: [PATCH] Add some hex routines to utils.

---
 src/utils.cpp |  5 +++++
 src/utils.h   | 24 ++++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/src/utils.cpp b/src/utils.cpp
index 9e65a3101..1c454d004 100644
--- a/src/utils.cpp
+++ b/src/utils.cpp
@@ -19,4 +19,9 @@ boost::posix_time::ptime ptFromSeconds(int iSeconds)
 		: ptEpoch() + boost::posix_time::seconds(iSeconds);
 }
 
+char charHex(int iDigit)
+{
+	return iDigit < 10 ? '0' + iDigit : 'A' - 10 + iDigit;
+}
+
 // vim:ts=4
diff --git a/src/utils.h b/src/utils.h
index 8ec8ffff8..dc6ba8e87 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -22,6 +22,30 @@ std::string strJoin(Iterator first, Iterator last, std::string strSeperator)
 
 	return ossValues.str();
 }
+
+char charHex(int iDigit);
+
+template<class Iterator>
+void strHex(std::string& strDst, Iterator first, int iSize)
+{
+	strDst.resize(iSize*2);
+
+	for (int i = 0; i < iSize; i++) {
+		unsigned char c	= *first++;
+
+		strDst[i*2]		= charHex(c >> 4);
+		strDst[i*2+1]	= charHex(c & 15);
+	}
+}
+
+inline void strHex(std::string& strDst, const std::string& strSrc) {
+	strHex(strDst, strSrc.begin(), strSrc.size());
+}
+
+inline void strHex(std::string& strDst, const std::vector<unsigned char> vchData) {
+	strHex(strDst, vchData.begin(), vchData.size());
+}
+
 #endif
 
 // vim:ts=4