src/main/java/eu/svjatoslav/commons/data/EnhancedDataOutputStream.java

   1 /*
   2  * Svjatoslav Commons - shared library of common functionality.
   3  * Copyright ©2012-2014, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of version 3 of the GNU Lesser General Public License
   7  * or later as published by the Free Software Foundation.
   8  */
   9
  10 package eu.svjatoslav.commons.data;
  11
  12 import java.io.DataOutputStream;
  13 import java.io.IOException;
  14 import java.io.OutputStream;
  15 import java.util.List;
  16
  17 public class EnhancedDataOutputStream extends DataOutputStream {
  18
  19         public EnhancedDataOutputStream(final OutputStream out) {
  20                 super(out);
  21         }
  22
  23         public void writeIntegerList(final List<Integer> list) throws IOException {
  24                 writeInt(list.size());
  25
  26                 for (final Integer integer : list)
  27                         writeInt(integer);
  28         }
  29
  30         public void writeString(final String string) throws IOException {
  31                 if (string == null) {
  32                         writeInt(-1);
  33                         return;
  34                 }
  35
  36                 final byte[] bytes = string.getBytes("UTF-8");
  37
  38                 writeInt(bytes.length);
  39                 write(bytes);
  40         }
  41
  42 }