1 files changed, 25 insertions, 7 deletions

diff --git a/vespajlib/src/main/java/com/yahoo/io/GrowableByteBuffer.java b/vespajlib/src/main/java/com/yahoo/io/GrowableByteBuffer.java
index c33882052b4..eba749bd14e 100644
--- a/vespajlib/src/main/java/com/yahoo/io/GrowableByteBuffer.java
+++ b/vespajlib/src/main/java/com/yahoo/io/GrowableByteBuffer.java
@@ -1,6 +1,8 @@
 // Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
 package com.yahoo.io;
 
+import com.yahoo.text.Utf8;
+
 import java.nio.*;
 
 /**
@@ -20,21 +22,22 @@ import java.nio.*;
  * No methods except getByteBuffer() expose the encapsulated
  * ByteBuffer, which is intentional.
  *
- * @author <a href="mailto:einarmr@yahoo-inc.com">Einar M R Rosenvinge</a>
+ * @author Einar M R Rosenvinge
  */
 public class GrowableByteBuffer implements Comparable<GrowableByteBuffer> {
+
     public static final int DEFAULT_BASE_SIZE = 64*1024;
     public static final float DEFAULT_GROW_FACTOR = 2.0f;
     private ByteBuffer buffer;
     private float growFactor;
     private int mark = -1;
 
-    //NOTE: It might have been better to subclass HeapByteBuffer,
-    //but that class is package-private. Subclassing ByteBuffer would involve
-    //implementing a lot of abstract methods, which would mean reinventing
-    //some (too many) wheels.
+    // NOTE: It might have been better to subclass HeapByteBuffer,
+    // but that class is package-private. Subclassing ByteBuffer would involve
+    // implementing a lot of abstract methods, which would mean reinventing
+    // some (too many) wheels.
 
-    //CONSTRUCTORS:
+    // CONSTRUCTORS:
 
     public GrowableByteBuffer() {
         this(DEFAULT_BASE_SIZE, DEFAULT_GROW_FACTOR);
@@ -61,7 +64,7 @@ public class GrowableByteBuffer implements Comparable<GrowableByteBuffer> {
     }
 
 
-    //ACCESSORS:
+    // ACCESSORS:
 
     public float getGrowFactor() {
         return growFactor;
@@ -364,6 +367,21 @@ public class GrowableByteBuffer implements Comparable<GrowableByteBuffer> {
         }
     }
 
+    /** Writes this string to the buffer as a 1_4 encoded length in bytes followed by the utf8 bytes */
+    public void putUtf8String(String value) {
+        byte[] stringBytes = Utf8.toBytes(value);
+        putInt1_4Bytes(stringBytes.length);
+        put(stringBytes);
+    }
+
+    /** Reads a string from the buffer as a 1_4 encoded length in bytes followed by the utf8 bytes */
+    public String getUtf8String() {
+        int stringLength = getInt1_4Bytes();
+        byte[] stringBytes = new byte[stringLength];
+        get(stringBytes);
+        return Utf8.toString(stringBytes);
+    }
+
     /**
      * Computes the size used for storing the given integer using 1 or 4 bytes.
      *