1 | /*
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2 | * Copyright 2000,2003-2004 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.File;
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21 | import org.apache.tools.ant.BuildException;
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22 | import org.apache.tools.ant.Task;
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23 |
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24 | /**
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25 | * Creates a given directory.
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26 | * Creates a directory and any non-existent parent directories, when
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27 | * necessary
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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="filesystem"
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32 | */
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33 |
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34 | public class Mkdir extends Task {
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35 |
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36 | private static final int MKDIR_RETRY_SLEEP_MILLIS = 10;
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37 | /**
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38 | * our little directory
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39 | */
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40 | private File dir;
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41 |
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42 | /**
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43 | * create the directory and all parents
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44 | * @throws BuildException if dir is somehow invalid, or creation failed.
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45 | */
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46 | public void execute() throws BuildException {
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47 | if (dir == null) {
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48 | throw new BuildException("dir attribute is required", getLocation());
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49 | }
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50 |
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51 | if (dir.isFile()) {
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52 | throw new BuildException("Unable to create directory as a file "
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53 | + "already exists with that name: "
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54 | + dir.getAbsolutePath());
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55 | }
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56 |
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57 | if (!dir.exists()) {
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58 | boolean result = mkdirs(dir);
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59 | if (!result) {
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60 | String msg = "Directory " + dir.getAbsolutePath()
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61 | + " creation was not successful for an unknown reason";
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62 | throw new BuildException(msg, getLocation());
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63 | }
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64 | log("Created dir: " + dir.getAbsolutePath());
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65 | }
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66 | }
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67 |
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68 | /**
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69 | * the directory to create; required.
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70 | *
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71 | * @param dir the directory to be made.
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72 | */
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73 | public void setDir(File dir) {
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74 | this.dir = dir;
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75 | }
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76 | /**
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77 | * Attempt to fix possible race condition when creating
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78 | * directories on WinXP. If the mkdirs does not work,
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79 | * wait a little and try again.
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80 | */
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81 | private boolean mkdirs(File f) {
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82 | if (!f.mkdirs()) {
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83 | try {
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84 | Thread.sleep(MKDIR_RETRY_SLEEP_MILLIS);
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85 | return f.mkdirs();
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86 | } catch (InterruptedException ex) {
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87 | return f.mkdirs();
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88 | }
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89 | }
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90 | return true;
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91 | }
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92 | }
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93 |
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