Fix to topology-lldp-discovery to allow for clean karaf feature

[controller.git] / opendaylight / commons / liblldp / src / main / java / org / opendaylight / controller / liblldp / HexEncode.java

diff --git a/opendaylight/commons/liblldp/src/main/java/org/opendaylight/controller/liblldp/HexEncode.java b/opendaylight/commons/liblldp/src/main/java/org/opendaylight/controller/liblldp/HexEncode.java
new file mode 100644 (file)
index 0000000..8236d4c
--- /dev/null
+++ b/opendaylight/commons/liblldp/src/main/java/org/opendaylight/controller/liblldp/HexEncode.java
@@ -0,0 +1,114 @@
+
+/*
+ * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.opendaylight.controller.liblldp;
+
+import java.math.BigInteger;
+
+/**
+ * The class provides methods to convert hex encode strings
+ *
+ *
+ */
+public class HexEncode {
+    /**
+     * This method converts byte array into String format without ":" inserted.
+     *
+     * @param bytes
+     *            The byte array to convert to string
+     * @return The hexadecimal representation of the byte array. If bytes is
+     *         null, "null" string is returned
+     */
+    public static String bytesToHexString(byte[] bytes) {
+
+        if (bytes == null) {
+            return "null";
+        }
+
+        String ret = "";
+        StringBuffer buf = new StringBuffer();
+        for (int i = 0; i < bytes.length; i++) {
+            if (i > 0) {
+                ret += ":";
+            }
+            short u8byte = (short) (bytes[i] & 0xff);
+            String tmp = Integer.toHexString(u8byte);
+            if (tmp.length() == 1) {
+                buf.append("0");
+            }
+            buf.append(tmp);
+        }
+        ret = buf.toString();
+        return ret;
+    }
+
+    public static String longToHexString(long val) {
+        char arr[] = Long.toHexString(val).toCharArray();
+        StringBuffer buf = new StringBuffer();
+        // prepend the right number of leading zeros
+        int i = 0;
+        for (; i < (16 - arr.length); i++) {
+            buf.append("0");
+            if ((i & 0x01) == 1) {
+                buf.append(":");
+            }
+        }
+        for (int j = 0; j < arr.length; j++) {
+            buf.append(arr[j]);
+            if ((((i + j) & 0x01) == 1) && (j < (arr.length - 1))) {
+                buf.append(":");
+            }
+        }
+        return buf.toString();
+    }
+
+
+    public static byte[] bytesFromHexString(String values) {
+        String target = "";
+        if (values != null) {
+            target = values;
+        }
+        String[] octets = target.split(":");
+
+        byte[] ret = new byte[octets.length];
+        for (int i = 0; i < octets.length; i++) {
+            ret[i] = Integer.valueOf(octets[i], 16).byteValue();
+        }
+        return ret;
+    }
+
+    public static long stringToLong(String values) {
+        long value = new BigInteger(values.replaceAll(":", ""), 16).longValue();
+        return value;
+    }
+
+    /**
+     * This method converts byte array into HexString format with ":" inserted.
+     */
+    public static String bytesToHexStringFormat(byte[] bytes) {
+        if (bytes == null) {
+            return "null";
+        }
+        String ret = "";
+        StringBuffer buf = new StringBuffer();
+        for (int i = 0; i < bytes.length; i++) {
+            if (i > 0) {
+                buf.append(":");
+            }
+            short u8byte = (short) (bytes[i] & 0xff);
+            String tmp = Integer.toHexString(u8byte);
+            if (tmp.length() == 1) {
+                buf.append("0");
+            }
+            buf.append(tmp);
+        }
+        ret = buf.toString();
+        return ret;
+    }
+}