Initial opendaylight infrastructure commit!!

[controller.git] / third-party / openflowj / src / main / java / org / openflow / util / HexString.java

diff --git a/third-party/openflowj/src/main/java/org/openflow/util/HexString.java b/third-party/openflowj/src/main/java/org/openflow/util/HexString.java
new file mode 100644 (file)
index 0000000..489e5a6
--- /dev/null
+++ b/third-party/openflowj/src/main/java/org/openflow/util/HexString.java
@@ -0,0 +1,65 @@
+package org.openflow.util;
+
+import java.math.BigInteger;
+
+public class HexString {
+    /**
+     * Convert a string of bytes to a ':' separated hex string
+     * @param bytes
+     * @return "0f:ca:fe:de:ad:be:ef"
+     */
+    public static String toHexString(byte[] bytes) {
+        int i;
+        String ret = "";
+        String tmp;
+        for(i=0; i< bytes.length; i++) {
+            if(i> 0)
+                ret += ":";
+            tmp = Integer.toHexString(U8.f(bytes[i]));
+            if (tmp.length() == 1)
+                ret += "0";
+            ret += tmp; 
+        }
+        return ret;
+    }
+    
+    public static String toHexString(long val) {
+        char arr[] = Long.toHexString(val).toCharArray();
+        String ret = "";
+        // prepend the right number of leading zeros
+        int i = 0;
+        for (; i < (16 - arr.length); i++) {
+            ret += "0";
+            if ((i % 2) == 1)
+                ret += ":";
+        }
+        for (int j = 0; j < arr.length; j++) {
+            ret += arr[j];
+            if ((((i + j) % 2) == 1) && (j < (arr.length - 1)))
+                ret += ":";
+        }
+        return ret;
+    }
+    
+    
+    /**
+     * Convert a string of hex values into a string of bytes
+     * @param values "0f:ca:fe:de:ad:be:ef"
+     * @return [15, 5 ,2, 5, 17] 
+     */
+    
+    public static byte[] fromHexString(String values) {
+        String[] octets = values.split(":");
+        byte[] ret = new byte[octets.length];
+        int i;
+        
+        for(i=0;i<octets.length; i++)
+            ret[i] = Integer.valueOf(octets[i], 16).byteValue();
+        return ret;
+    }
+    
+    public static long toLong(String values) {
+               long value = new BigInteger(values.replaceAll(":", ""), 16).longValue();
+        return value;
+    }
+}