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1   /*
2    * Copyright (C) 2018, Markus Duft <markus.duft@ssi-schaefer.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.lfs;
44  
45  import java.io.IOException;
46  import java.text.MessageFormat;
47  
48  import org.eclipse.jgit.errors.ConfigInvalidException;
49  import org.eclipse.jgit.lfs.internal.LfsText;
50  import org.eclipse.jgit.lib.ConfigConstants;
51  import org.eclipse.jgit.lib.Repository;
52  import org.eclipse.jgit.lib.StoredConfig;
53  import org.eclipse.jgit.storage.file.FileBasedConfig;
54  import org.eclipse.jgit.util.FS;
55  import org.eclipse.jgit.util.LfsFactory.LfsInstallCommand;
56  import org.eclipse.jgit.util.SystemReader;
57  
58  /**
59   * Installs all required LFS properties for the current user, analogous to 'git
60   * lfs install', but defaulting to using JGit builtin hooks.
61   *
62   * @since 4.11
63   */
64  public class InstallBuiltinLfsCommand implements LfsInstallCommand {
65  
66  	private static final String[] ARGS_USER = new String[] { "lfs", "install" }; //$NON-NLS-1$//$NON-NLS-2$
67  
68  	private static final String[] ARGS_LOCAL = new String[] { "lfs", "install", //$NON-NLS-1$//$NON-NLS-2$
69  			"--local" }; //$NON-NLS-1$
70  
71  	private Repository repository;
72  
73  	/** {@inheritDoc} */
74  	@Override
75  	public Void call() throws Exception {
76  		StoredConfig cfg = null;
77  		if (repository == null) {
78  			cfg = loadUserConfig();
79  		} else {
80  			cfg = repository.getConfig();
81  		}
82  
83  		cfg.setBoolean(ConfigConstants.CONFIG_FILTER_SECTION,
84  				ConfigConstants.CONFIG_SECTION_LFS,
85  				ConfigConstants.CONFIG_KEY_USEJGITBUILTIN, true);
86  		cfg.setBoolean(ConfigConstants.CONFIG_FILTER_SECTION,
87  				ConfigConstants.CONFIG_SECTION_LFS,
88  				ConfigConstants.CONFIG_KEY_REQUIRED, true);
89  
90  		cfg.save();
91  
92  		// try to run git lfs install, we really don't care if it is present
93  		// and/or works here (yet).
94  		ProcessBuilder builder = FS.DETECTED.runInShell("git", //$NON-NLS-1$
95  				repository == null ? ARGS_USER : ARGS_LOCAL);
96  		if (repository != null) {
97  			builder.directory(repository.isBare() ? repository.getDirectory()
98  					: repository.getWorkTree());
99  		}
100 		FS.DETECTED.runProcess(builder, null, null, (String) null);
101 
102 		return null;
103 	}
104 
105 	/**
106 	 * Set the repository to install LFS for
107 	 *
108 	 * @param repo
109 	 *            the repository to install LFS into locally instead of the user
110 	 *            configuration
111 	 * @return this command
112 	 */
113 	@Override
114 	public LfsInstallCommand setRepository(Repository repo) {
115 		this.repository = repo;
116 		return this;
117 	}
118 
119 	private StoredConfig loadUserConfig() throws IOException {
120 		FileBasedConfig c = SystemReader.getInstance().openUserConfig(null,
121 				FS.DETECTED);
122 		try {
123 			c.load();
124 		} catch (ConfigInvalidException e1) {
125 			throw new IOException(MessageFormat
126 					.format(LfsText.get().userConfigInvalid, c.getFile()
127 							.getAbsolutePath(), e1),
128 					e1);
129 		}
130 
131 		return c;
132 	}
133 
134 }