1 | /*
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2 | * Copyright 2002,2004 The Apache Software Foundation
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3 | *
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4 | * Licensed under the Apache License, Version 2.0 (the "License");
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5 | * you may not use this file except in compliance with the License.
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6 | * You may obtain a copy of the License at
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7 | *
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8 | * http://www.apache.org/licenses/LICENSE-2.0
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9 | *
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10 | * Unless required by applicable law or agreed to in writing, software
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11 | * distributed under the License is distributed on an "AS IS" BASIS,
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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13 | * See the License for the specific language governing permissions and
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14 | * limitations under the License.
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15 | *
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16 | */
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17 | package org.apache.tools.ant.util;
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18 |
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19 | import java.io.FilterOutputStream;
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20 | import java.io.IOException;
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21 | import java.io.OutputStream;
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22 |
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23 | /**
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24 | * Class that can be used to wrap <tt>System.out</tt> and <tt>System.err</tt>
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25 | * without getting anxious about any client closing the stream.
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26 | *
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27 | * <p>
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28 | * In code-language it means that it is not necessary to do:
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29 | * <pre>
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30 | * if (out != System.out && out!= System.err) {
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31 | * out.close();
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32 | * }
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33 | * </pre>
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34 | * </p>
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35 | *
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36 | */
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37 | public class KeepAliveOutputStream extends FilterOutputStream {
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38 |
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39 | public KeepAliveOutputStream(OutputStream out) {
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40 | super(out);
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41 | }
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42 |
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43 | /** this method does nothing */
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44 | public void close() throws IOException {
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45 | //
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46 | }
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47 | }
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48 |
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