--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/themeinstaller/source/src/com/nokia/tools/themeinstaller/odtconverter/StringPool.java	Wed Sep 01 12:32:13 2010 +0100
@@ -0,0 +1,112 @@
+/*
+* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  String pool for DOM Externalizer.
+ *
+*/
+
+
+package com.nokia.tools.themeinstaller.odtconverter;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.util.Vector;
+
+/**
+ * String pool is a set of strings where a string is only listed once.
+ */
+public class StringPool
+    {
+
+    // The pool for storing the strings
+    private Vector iStringPool;
+
+    /**
+     * Constructor.
+     */
+    public StringPool()
+        {
+        iStringPool = new Vector();
+        }
+
+    /**
+     * Add a string to the pool. Each string is added only once.
+     * @param aString String to add
+     * @return Index in the pool
+     */
+    public int addString( String aString )
+        {
+        if( aString == null )
+            {
+            aString = "";
+            }
+        if( !iStringPool.contains( aString ) )
+            {
+            iStringPool.addElement( aString );
+            }
+        return iStringPool.lastIndexOf( aString );
+        }
+
+    /**
+     * Get a string from the pool.
+     * @param aIndex Index number of the string
+     * @return The requested string
+     */
+    public String getString( int aIndex )
+        {
+        return ( String ) iStringPool.elementAt( aIndex );
+        }
+
+
+    /**
+     * Get string pool contents in a byte array.
+     * @return String pool contents in a byte array
+     * @throws IOException if writing to a stream fails
+     * @throws ODTException if writing to a stream fails
+     */
+    public byte[] toByteArray() throws IOException, ODTException
+        {
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+        ODTDataOutputStream dos = new ODTDataOutputStream( baos );
+        int count = iStringPool.size();
+        byte[] result = null;
+
+        try
+            {
+            // Write string count and each string to the stream
+            dos.writeInt16( count );
+            for( int i = 0; i < count; i++ )
+                {
+                String string = ( String ) iStringPool.elementAt( i );
+                dos.writeInt16( string.length() );
+                dos.writeString8( string );
+                }
+
+            result = baos.toByteArray();
+            }
+        finally
+            {
+            if( dos != null )
+                {
+                dos.close();
+                }
+            if( baos != null )
+                {
+                baos.close();
+                }
+            }
+
+        return result;
+        }
+
+    }