01: /* ====================================================================
02: Licensed to the Apache Software Foundation (ASF) under one or more
03: contributor license agreements. See the NOTICE file distributed with
04: this work for additional information regarding copyright ownership.
05: The ASF licenses this file to You under the Apache License, Version 2.0
06: (the "License"); you may not use this file except in compliance with
07: the License. You may obtain a copy of the License at
08:
09: http://www.apache.org/licenses/LICENSE-2.0
10:
11: Unless required by applicable law or agreed to in writing, software
12: distributed under the License is distributed on an "AS IS" BASIS,
13: WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: See the License for the specific language governing permissions and
15: limitations under the License.
16: ==================================================================== */
17:
18: package org.apache.poi.hslf.util;
19:
20: import java.io.ByteArrayOutputStream;
21:
22: /**
23: * This class doesn't work yet, but is here to show the idea of a
24: * ByteArrayOutputStream where you can track how many bytes you've
25: * already written, and go back and write over a previous part of the stream
26: *
27: * @author Nick Burch
28: */
29:
30: public class MutableByteArrayOutputStream extends ByteArrayOutputStream {
31: /** Return how many bytes we've stuffed in so far */
32: public int getBytesWritten() {
33: return -1;
34: }
35:
36: /** Write some bytes to the array */
37: public void write(byte[] b) {
38: }
39:
40: public void write(int b) {
41: }
42:
43: /** Write some bytes to an earlier bit of the array */
44: public void overwrite(byte[] b, int startPos) {
45: }
46: }
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