1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * 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.accumulo.core.cli;
18
19 import com.beust.jcommander.JCommander;
20 import com.beust.jcommander.Parameter;
21 import com.beust.jcommander.ParameterException;
22
23 public class Help {
24 @Parameter(names={"-h", "-?", "--help", "-help"}, help=true)
25 public boolean help = false;
26
27 public void parseArgs(String programName, String[] args, Object ... others) {
28 JCommander commander = new JCommander();
29 commander.addObject(this);
30 for (Object other : others)
31 commander.addObject(other);
32 commander.setProgramName(programName);
33 try {
34 commander.parse(args);
35 } catch (ParameterException ex) {
36 commander.usage();
37 System.err.println(ex.getMessage());
38 System.exit(0);
39 }
40 if (help) {
41 commander.usage();
42 System.exit(0);
43 }
44 }
45 }