1 | /*
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2 | * Copyright 2000-2002,2004 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 |
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18 | package org.apache.tools.ant.taskdefs;
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19 |
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20 | import java.io.FileOutputStream;
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21 | import java.io.IOException;
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22 | import java.util.zip.GZIPOutputStream;
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23 | import org.apache.tools.ant.BuildException;
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24 |
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25 | /**
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26 | * Compresses a file with the GZIP algorithm. Normally used to compress
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27 | * non-compressed archives such as TAR files.
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28 | *
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29 | * @since Ant 1.1
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30 | *
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31 | * @ant.task category="packaging"
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32 | */
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33 |
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34 | public class GZip extends Pack {
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35 | /**
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36 | * perform the GZip compression operation.
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37 | */
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38 | protected void pack() {
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39 | GZIPOutputStream zOut = null;
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40 | try {
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41 | zOut = new GZIPOutputStream(new FileOutputStream(zipFile));
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42 | zipFile(source, zOut);
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43 | } catch (IOException ioe) {
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44 | String msg = "Problem creating gzip " + ioe.getMessage();
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45 | throw new BuildException(msg, ioe, getLocation());
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46 | } finally {
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47 | if (zOut != null) {
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48 | try {
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49 | // close up
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50 | zOut.close();
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51 | } catch (IOException e) {
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52 | // do nothing
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53 | }
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54 | }
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55 | }
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56 | }
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57 | }
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