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:
19: /*
20: * Since the initial version of this file was deveolped on the clock on
21: * an NSF grant I should say the following boilerplate:
22: *
23: * This material is based upon work supported by the National Science
24: * Foundaton under Grant No. EIA-0196404. Any opinions, findings, and
25: * conclusions or recommendations expressed in this material are those
26: * of the author and do not necessarily reflect the views of the
27: * National Science Foundation.
28: */
29:
30: package org.apache.tools.ant.taskdefs.optional.unix;
31:
32: import org.apache.tools.ant.BuildException;
33:
34: /**
35: * Chgrp equivalent for unix-like environments.
36: *
37: * @since Ant 1.6
38: *
39: * @ant.task category="filesystem"
40: */
41: public class Chgrp extends AbstractAccessTask {
42:
43: private boolean haveGroup = false;
44:
45: /**
46: * Chgrp task for setting unix group of a file.
47: */
48: public Chgrp() {
49: super .setExecutable("chgrp");
50: }
51:
52: /**
53: * Set the group atribute.
54: *
55: * @param group The new group for the file(s) or directory(ies)
56: */
57: public void setGroup(String group) {
58: createArg().setValue(group);
59: haveGroup = true;
60: }
61:
62: /**
63: * Ensure that all the required arguments and other conditions have
64: * been set.
65: */
66: protected void checkConfiguration() {
67: if (!haveGroup) {
68: throw new BuildException(
69: "Required attribute group not set in " + "chgrp",
70: getLocation());
71: }
72: super .checkConfiguration();
73: }
74:
75: /**
76: * We don't want to expose the executable atribute, so overide it.
77: *
78: * @param e User supplied executable that we won't accept.
79: */
80: public void setExecutable(String e) {
81: throw new BuildException(getTaskType()
82: + " doesn\'t support the executable" + " attribute",
83: getLocation());
84: }
85: }
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