add hex conversion utility

git-svn-id: http://trooper/svn/projects/jSite/trunk@937 c3eda9e8-030b-0410-8277-bc7414b0a119

diff --git a/src/net/pterodactylus/util/number/Hex.java b/src/net/pterodactylus/util/number/Hex.java
new file mode 100644 (file)
index 0000000..36cca06
--- /dev/null
+++ b/src/net/pterodactylus/util/number/Hex.java
@@ -0,0 +1,46 @@
+/*
+ * jSite2 - Hex.java
+ * Copyright © 2008 David Roden
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+package net.pterodactylus.util.number;
+
+/**
+ * Conversion routines for handling hexadecimal numbers.
+ * 
+ * @author David ‘Bombe’ Roden <bombe@freenetproject.org>
+ * @version $Id$
+ */
+public class Hex {
+
+       /**
+        * Converts the given byte array to a hexadecimal string.
+        * 
+        * @param dataBytes
+        *            The bytes to convert
+        * @return A string of hexadecimal numbers
+        */
+       public static String toHex(byte[] dataBytes) {
+               StringBuilder hexString = new StringBuilder(dataBytes.length * 2);
+               for (byte dataByte: dataBytes) {
+                       String hexByte = "0" + Integer.toHexString(dataByte & 0xff);
+                       hexString.append(hexByte.substring(hexByte.length() - 2));
+               }
+               return hexString.toString();
+       }
+
+}