1 /*
2 * Copyright (C) 2009, Google Inc.
3 * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
4 * and other copyright owners as documented in the project's IP log.
5 *
6 * This program and the accompanying materials are made available
7 * under the terms of the Eclipse Distribution License v1.0 which
8 * accompanies this distribution, is reproduced below, and is
9 * available at http://www.eclipse.org/org/documents/edl-v10.php
10 *
11 * All rights reserved.
12 *
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
15 * conditions are met:
16 *
17 * - Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials provided
23 * with the distribution.
24 *
25 * - Neither the name of the Eclipse Foundation, Inc. nor the
26 * names of its contributors may be used to endorse or promote
27 * products derived from this software without specific prior
28 * written permission.
29 *
30 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
31 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
32 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
33 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
34 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
35 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
36 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
37 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
38 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
39 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
41 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
42 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
43 */
44
45 package org.eclipse.jgit.pgm.opt;
46
47 import java.io.IOException;
48
49 import org.eclipse.jgit.lib.ObjectId;
50 import org.eclipse.jgit.pgm.internal.CLIText;
51 import org.kohsuke.args4j.CmdLineException;
52 import org.kohsuke.args4j.CmdLineParser;
53 import org.kohsuke.args4j.OptionDef;
54 import org.kohsuke.args4j.spi.OptionHandler;
55 import org.kohsuke.args4j.spi.Parameters;
56 import org.kohsuke.args4j.spi.Setter;
57
58 /**
59 * Custom argument handler {@link org.eclipse.jgit.lib.ObjectId} from string
60 * values.
61 * <p>
62 * Assumes the parser has been initialized with a Repository.
63 */
64 public class ObjectIdHandler extends OptionHandler<ObjectId> {
65 private final org.eclipse.jgit.pgm.opt.CmdLineParser clp;
66
67 /**
68 * Create a new handler for the command name.
69 * <p>
70 * This constructor is used only by args4j.
71 *
72 * @param parser
73 * a {@link org.kohsuke.args4j.CmdLineParser} object.
74 * @param option
75 * a {@link org.kohsuke.args4j.OptionDef} object.
76 * @param setter
77 * a {@link org.kohsuke.args4j.spi.Setter} object.
78 */
79 public ObjectIdHandler(final CmdLineParser parser, final OptionDef option,
80 final Setter<? super ObjectId> setter) {
81 super(parser, option, setter);
82 clp = (org.eclipse.jgit.pgm.opt.CmdLineParser) parser;
83 }
84
85 /** {@inheritDoc} */
86 @Override
87 public int parseArguments(Parameters params) throws CmdLineException {
88 final String name = params.getParameter(0);
89 final ObjectId id;
90 try {
91 id = clp.getRepository().resolve(name);
92 } catch (IOException e) {
93 throw new CmdLineException(clp, CLIText.format(e.getMessage()));
94 }
95 if (id != null) {
96 setter.addValue(id);
97 return 1;
98 }
99
100 throw new CmdLineException(clp,
101 CLIText.format(CLIText.get().notAnObject), name);
102 }
103
104 /** {@inheritDoc} */
105 @Override
106 public String getDefaultMetaVariable() {
107 return CLIText.get().metaVar_object;
108 }
109 }