1 /*
2 * Copyright (C) 2010, Chris Aniszczyk <caniszczyk@gmail.com>
3 * and other copyright owners as documented in the project's IP log.
4 *
5 * This program and the accompanying materials are made available
6 * under the terms of the Eclipse Distribution License v1.0 which
7 * accompanies this distribution, is reproduced below, and is
8 * available at http://www.eclipse.org/org/documents/edl-v10.php
9 *
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials provided
22 * with the distribution.
23 *
24 * - Neither the name of the Eclipse Foundation, Inc. nor the
25 * names of its contributors may be used to endorse or promote
26 * products derived from this software without specific prior
27 * written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
30 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
31 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
32 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
34 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
35 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
36 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
37 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
38 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
40 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
41 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42 */
43 package org.eclipse.jgit.api;
44
45 import java.io.File;
46 import java.io.IOException;
47 import java.text.MessageFormat;
48 import java.util.concurrent.Callable;
49
50 import org.eclipse.jgit.api.errors.GitAPIException;
51 import org.eclipse.jgit.api.errors.JGitInternalException;
52 import org.eclipse.jgit.internal.JGitText;
53 import org.eclipse.jgit.lib.Constants;
54 import org.eclipse.jgit.lib.Repository;
55 import org.eclipse.jgit.lib.RepositoryBuilder;
56 import org.eclipse.jgit.util.SystemReader;
57
58 /**
59 * Create an empty git repository or reinitalize an existing one
60 *
61 * @see <a href="http://www.kernel.org/pub/software/scm/git/docs/git-init.html"
62 * >Git documentation about init</a>
63 */
64 public class InitCommand implements Callable<Git> {
65 private File directory;
66
67 private File gitDir;
68
69 private boolean bare;
70
71 /**
72 * Executes the {@code Init} command.
73 *
74 * @return the newly created {@code Git} object with associated repository
75 */
76 public Git call() throws GitAPIException {
77 try {
78 RepositoryBuilder builder = new RepositoryBuilder();
79 if (bare)
80 builder.setBare();
81 builder.readEnvironment();
82 if (gitDir != null)
83 builder.setGitDir(gitDir);
84 else
85 gitDir = builder.getGitDir();
86 if (directory != null) {
87 if (bare)
88 builder.setGitDir(directory);
89 else {
90 builder.setWorkTree(directory);
91 if (gitDir == null)
92 builder.setGitDir(new File(directory, Constants.DOT_GIT));
93 }
94 } else if (builder.getGitDir() == null) {
95 String dStr = SystemReader.getInstance()
96 .getProperty("user.dir"); //$NON-NLS-1$
97 if (dStr == null)
98 dStr = "."; //$NON-NLS-1$
99 File d = new File(dStr);
100 if (!bare)
101 d = new File(d, Constants.DOT_GIT);
102 builder.setGitDir(d);
103 } else {
104 // directory was not set but gitDir was set
105 if (!bare) {
106 String dStr = SystemReader.getInstance().getProperty(
107 "user.dir"); //$NON-NLS-1$
108 if (dStr == null)
109 dStr = "."; //$NON-NLS-1$
110 builder.setWorkTree(new File(dStr));
111 }
112 }
113 Repository repository = builder.build();
114 if (!repository.getObjectDatabase().exists())
115 repository.create(bare);
116 return new Git(repository);
117 } catch (IOException e) {
118 throw new JGitInternalException(e.getMessage(), e);
119 }
120 }
121
122 /**
123 * The optional directory associated with the init operation. If no
124 * directory is set, we'll use the current directory
125 *
126 * @param directory
127 * the directory to init to
128 * @return this instance
129 * @throws IllegalStateException
130 * if the combination of directory, gitDir and bare is illegal.
131 * E.g. if for a non-bare repository directory and gitDir point
132 * to the same directory of if for a bare repository both
133 * directory and gitDir are specified
134 */
135 public InitCommand setDirectory(File directory)
136 throws IllegalStateException {
137 validateDirs(directory, gitDir, bare);
138 this.directory = directory;
139 return this;
140 }
141
142 /**
143 * @param gitDir
144 * the repository meta directory
145 * @return this instance
146 * @throws IllegalStateException
147 * if the combination of directory, gitDir and bare is illegal.
148 * E.g. if for a non-bare repository directory and gitDir point
149 * to the same directory of if for a bare repository both
150 * directory and gitDir are specified
151 * @since 3.6
152 */
153 public InitCommand setGitDir(File gitDir)
154 throws IllegalStateException {
155 validateDirs(directory, gitDir, bare);
156 this.gitDir = gitDir;
157 return this;
158 }
159
160 private static void validateDirs(File directory, File gitDir, boolean bare)
161 throws IllegalStateException {
162 if (directory != null) {
163 if (bare) {
164 if (gitDir != null && !gitDir.equals(directory))
165 throw new IllegalStateException(MessageFormat.format(
166 JGitText.get().initFailedBareRepoDifferentDirs,
167 gitDir, directory));
168 } else {
169 if (gitDir != null && gitDir.equals(directory))
170 throw new IllegalStateException(MessageFormat.format(
171 JGitText.get().initFailedNonBareRepoSameDirs,
172 gitDir, directory));
173 }
174 }
175 }
176
177 /**
178 * @param bare
179 * whether the repository is bare or not
180 * @throws IllegalStateException
181 * if the combination of directory, gitDir and bare is illegal.
182 * E.g. if for a non-bare repository directory and gitDir point
183 * to the same directory of if for a bare repository both
184 * directory and gitDir are specified
185 * @return this instance
186 */
187 public InitCommand setBare(boolean bare) {
188 validateDirs(directory, gitDir, bare);
189 this.bare = bare;
190 return this;
191 }
192 }