Initial opendaylight infrastructure commit!!

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

diff --git a/third-party/openflowj/src/main/java/org/openflow/util/StringByteSerializer.java b/third-party/openflowj/src/main/java/org/openflow/util/StringByteSerializer.java
new file mode 100644 (file)
index 0000000..80e3721
--- /dev/null
+++ b/third-party/openflowj/src/main/java/org/openflow/util/StringByteSerializer.java
@@ -0,0 +1,40 @@
+package org.openflow.util;
+
+import java.io.UnsupportedEncodingException;
+import java.nio.ByteBuffer;
+import java.nio.charset.Charset;
+import java.util.Arrays;
+
+public class StringByteSerializer {
+    public static String readFrom(ByteBuffer data, int length) {
+        byte[] stringBytes = new byte[length];
+        data.get(stringBytes);
+        // find the first index of 0
+        int index = 0;
+        for (byte b : stringBytes) {
+            if (0 == b)
+                break;
+            ++index;
+        }
+        return new String(Arrays.copyOf(stringBytes, index),
+                Charset.forName("ascii"));
+    }
+
+    public static void writeTo(ByteBuffer data, int length, String value) {
+        try {
+            byte[] name = value.getBytes("ASCII");
+            if (name.length < length) {
+                data.put(name);
+                for (int i = name.length; i < length; ++i) {
+                    data.put((byte) 0);
+                }
+            } else {
+                data.put(name, 0, length-1);
+                data.put((byte) 0);
+            }
+        } catch (UnsupportedEncodingException e) {
+            throw new RuntimeException(e);
+        }
+
+    }
+}