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: package org.apache.wicket.util.io;
18:
19: import java.io.IOException;
20: import java.io.OutputStream;
21:
22: /**
23: * Output stream that counts bytes written to it (but discards them).
24: *
25: * @author Jonathan Locke
26: */
27: public final class ByteCountingOutputStream extends OutputStream {
28: private long size;
29:
30: /**
31: * @see java.io.OutputStream#write(int)
32: */
33: public void write(int b) throws IOException {
34: size++;
35: }
36:
37: /**
38: * @see java.io.OutputStream#write(byte[], int, int)
39: */
40: public void write(byte b[], int off, int len) throws IOException {
41: size += len;
42: }
43:
44: /**
45: * @return Number of bytes written to this stream
46: */
47: public long size() {
48: return size;
49: }
50: }
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