Java tutorial
/* * Copyright (C) 2010, Chris Aniszczyk <caniszczyk@gmail.com> * and other copyright owners as documented in the project's IP log. * * This program and the accompanying materials are made available * under the terms of the Eclipse Distribution License v1.0 which * accompanies this distribution, is reproduced below, and is * available at http://www.eclipse.org/org/documents/edl-v10.php * * All rights reserved. * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * - Neither the name of the Eclipse Foundation, Inc. nor the * names of its contributors may be used to endorse or promote * products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package org.eclipse.jgit.api; import java.io.File; import java.io.IOException; import java.text.MessageFormat; import java.util.concurrent.Callable; import org.eclipse.jgit.api.errors.GitAPIException; import org.eclipse.jgit.api.errors.JGitInternalException; import org.eclipse.jgit.internal.JGitText; import org.eclipse.jgit.lib.Constants; import org.eclipse.jgit.lib.Repository; import org.eclipse.jgit.lib.RepositoryBuilder; import org.eclipse.jgit.util.FS; import org.eclipse.jgit.util.SystemReader; /** * Create an empty git repository or reinitalize an existing one * * @see <a href="http://www.kernel.org/pub/software/scm/git/docs/git-init.html" * >Git documentation about init</a> */ public class InitCommand implements Callable<Git> { private File directory; private File gitDir; private boolean bare; private FS fs; /** * {@inheritDoc} * <p> * Executes the {@code Init} command. * * @return a {@code Git} instance that owns the {@code Repository} that it * wraps. */ @Override public Git call() throws GitAPIException { try { RepositoryBuilder builder = new RepositoryBuilder(); if (bare) builder.setBare(); if (fs != null) { builder.setFS(fs); } builder.readEnvironment(); if (gitDir != null) builder.setGitDir(gitDir); else gitDir = builder.getGitDir(); if (directory != null) { if (bare) builder.setGitDir(directory); else { builder.setWorkTree(directory); if (gitDir == null) builder.setGitDir(new File(directory, Constants.DOT_GIT)); } } else if (builder.getGitDir() == null) { String dStr = SystemReader.getInstance().getProperty("user.dir"); //$NON-NLS-1$ if (dStr == null) dStr = "."; //$NON-NLS-1$ File d = new File(dStr); if (!bare) d = new File(d, Constants.DOT_GIT); builder.setGitDir(d); } else { // directory was not set but gitDir was set if (!bare) { String dStr = SystemReader.getInstance().getProperty("user.dir"); //$NON-NLS-1$ if (dStr == null) dStr = "."; //$NON-NLS-1$ builder.setWorkTree(new File(dStr)); } } Repository repository = builder.build(); if (!repository.getObjectDatabase().exists()) repository.create(bare); return new Git(repository, true); } catch (IOException e) { throw new JGitInternalException(e.getMessage(), e); } } /** * The optional directory associated with the init operation. If no * directory is set, we'll use the current directory * * @param directory * the directory to init to * @return this instance * @throws java.lang.IllegalStateException * if the combination of directory, gitDir and bare is illegal. * E.g. if for a non-bare repository directory and gitDir point * to the same directory of if for a bare repository both * directory and gitDir are specified */ public InitCommand setDirectory(File directory) throws IllegalStateException { validateDirs(directory, gitDir, bare); this.directory = directory; return this; } /** * Set the repository meta directory (.git) * * @param gitDir * the repository meta directory * @return this instance * @throws java.lang.IllegalStateException * if the combination of directory, gitDir and bare is illegal. * E.g. if for a non-bare repository directory and gitDir point * to the same directory of if for a bare repository both * directory and gitDir are specified * @since 3.6 */ public InitCommand setGitDir(File gitDir) throws IllegalStateException { validateDirs(directory, gitDir, bare); this.gitDir = gitDir; return this; } private static void validateDirs(File directory, File gitDir, boolean bare) throws IllegalStateException { if (directory != null) { if (bare) { if (gitDir != null && !gitDir.equals(directory)) throw new IllegalStateException(MessageFormat .format(JGitText.get().initFailedBareRepoDifferentDirs, gitDir, directory)); } else { if (gitDir != null && gitDir.equals(directory)) throw new IllegalStateException( MessageFormat.format(JGitText.get().initFailedNonBareRepoSameDirs, gitDir, directory)); } } } /** * Set whether the repository is bare or not * * @param bare * whether the repository is bare or not * @throws java.lang.IllegalStateException * if the combination of directory, gitDir and bare is illegal. * E.g. if for a non-bare repository directory and gitDir point * to the same directory of if for a bare repository both * directory and gitDir are specified * @return this instance */ public InitCommand setBare(boolean bare) { validateDirs(directory, gitDir, bare); this.bare = bare; return this; } /** * Set the file system abstraction to be used for repositories created by * this command. * * @param fs * the abstraction. * @return {@code this} (for chaining calls). * @since 4.10 */ public InitCommand setFs(FS fs) { this.fs = fs; return this; } }