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- /*
- * Copyright (C) 2010, Christian Halstrick <christian.halstrick@sap.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.IOException;
- import java.text.MessageFormat;
- import java.util.ArrayList;
- import java.util.List;
-
- import org.eclipse.jgit.api.errors.GitAPIException;
- import org.eclipse.jgit.api.errors.JGitInternalException;
- import org.eclipse.jgit.api.errors.NoHeadException;
- import org.eclipse.jgit.errors.IncorrectObjectTypeException;
- import org.eclipse.jgit.errors.MissingObjectException;
- import org.eclipse.jgit.internal.JGitText;
- import org.eclipse.jgit.lib.AnyObjectId;
- import org.eclipse.jgit.lib.Constants;
- import org.eclipse.jgit.lib.ObjectId;
- import org.eclipse.jgit.lib.Ref;
- import org.eclipse.jgit.lib.Repository;
- import org.eclipse.jgit.revwalk.RevCommit;
- import org.eclipse.jgit.revwalk.RevWalk;
- import org.eclipse.jgit.revwalk.filter.AndRevFilter;
- import org.eclipse.jgit.revwalk.filter.MaxCountRevFilter;
- import org.eclipse.jgit.revwalk.filter.SkipRevFilter;
- import org.eclipse.jgit.treewalk.filter.AndTreeFilter;
- import org.eclipse.jgit.treewalk.filter.PathFilter;
- import org.eclipse.jgit.treewalk.filter.PathFilterGroup;
- import org.eclipse.jgit.treewalk.filter.TreeFilter;
-
- /**
- * A class used to execute a {@code Log} command. It has setters for all
- * supported options and arguments of this command and a {@link #call()} method
- * to finally execute the command. Each instance of this class should only be
- * used for one invocation of the command (means: one call to {@link #call()})
- * <p>
- * Examples (<code>git</code> is a {@link Git} instance):
- * <p>
- * Get newest 10 commits, starting from the current branch:
- *
- * <pre>
- * ObjectId head = repository.resolve(Constants.HEAD);
- *
- * Iterable<RevCommit> commits = git.log().add(head).setMaxCount(10).call();
- * </pre>
- * <p>
- *
- * <p>
- * Get commits only for a specific file:
- *
- * <pre>
- * git.log().add(head).addPath("dir/filename.txt").call();
- * </pre>
- * <p>
- *
- * @see <a href="http://www.kernel.org/pub/software/scm/git/docs/git-log.html"
- * >Git documentation about Log</a>
- */
- public class LogCommand extends GitCommand<Iterable<RevCommit>> {
- private RevWalk walk;
-
- private boolean startSpecified = false;
-
- private final List<PathFilter> pathFilters = new ArrayList<PathFilter>();
-
- private int maxCount = -1;
-
- private int skip = -1;
-
- /**
- * @param repo
- */
- protected LogCommand(Repository repo) {
- super(repo);
- walk = new RevWalk(repo);
- }
-
- /**
- * Executes the {@code Log} command with all the options and parameters
- * collected by the setter methods (e.g. {@link #add(AnyObjectId)},
- * {@link #not(AnyObjectId)}, ..) of this class. Each instance of this class
- * should only be used for one invocation of the command. Don't call this
- * method twice on an instance.
- *
- * @return an iteration over RevCommits
- * @throws NoHeadException
- * of the references ref cannot be resolved
- */
- public Iterable<RevCommit> call() throws GitAPIException, NoHeadException {
- checkCallable();
- if (pathFilters.size() > 0)
- walk.setTreeFilter(AndTreeFilter.create(
- PathFilterGroup.create(pathFilters), TreeFilter.ANY_DIFF));
- if (skip > -1 && maxCount > -1)
- walk.setRevFilter(AndRevFilter.create(SkipRevFilter.create(skip),
- MaxCountRevFilter.create(maxCount)));
- else if (skip > -1)
- walk.setRevFilter(SkipRevFilter.create(skip));
- else if (maxCount > -1)
- walk.setRevFilter(MaxCountRevFilter.create(maxCount));
- if (!startSpecified) {
- try {
- ObjectId headId = repo.resolve(Constants.HEAD);
- if (headId == null)
- throw new NoHeadException(
- JGitText.get().noHEADExistsAndNoExplicitStartingRevisionWasSpecified);
- add(headId);
- } catch (IOException e) {
- // all exceptions thrown by add() shouldn't occur and represent
- // severe low-level exception which are therefore wrapped
- throw new JGitInternalException(
- JGitText.get().anExceptionOccurredWhileTryingToAddTheIdOfHEAD,
- e);
- }
- }
- setCallable(false);
- return walk;
- }
-
- /**
- * Mark a commit to start graph traversal from.
- *
- * @see RevWalk#markStart(RevCommit)
- * @param start
- * @return {@code this}
- * @throws MissingObjectException
- * the commit supplied is not available from the object
- * database. This usually indicates the supplied commit is
- * invalid, but the reference was constructed during an earlier
- * invocation to {@link RevWalk#lookupCommit(AnyObjectId)}.
- * @throws IncorrectObjectTypeException
- * the object was not parsed yet and it was discovered during
- * parsing that it is not actually a commit. This usually
- * indicates the caller supplied a non-commit SHA-1 to
- * {@link RevWalk#lookupCommit(AnyObjectId)}.
- * @throws JGitInternalException
- * a low-level exception of JGit has occurred. The original
- * exception can be retrieved by calling
- * {@link Exception#getCause()}. Expect only
- * {@code IOException's} to be wrapped. Subclasses of
- * {@link IOException} (e.g. {@link MissingObjectException}) are
- * typically not wrapped here but thrown as original exception
- */
- public LogCommand add(AnyObjectId start) throws MissingObjectException,
- IncorrectObjectTypeException {
- return add(true, start);
- }
-
- /**
- * Same as {@code --not start}, or {@code ^start}
- *
- * @param start
- * @return {@code this}
- * @throws MissingObjectException
- * the commit supplied is not available from the object
- * database. This usually indicates the supplied commit is
- * invalid, but the reference was constructed during an earlier
- * invocation to {@link RevWalk#lookupCommit(AnyObjectId)}.
- * @throws IncorrectObjectTypeException
- * the object was not parsed yet and it was discovered during
- * parsing that it is not actually a commit. This usually
- * indicates the caller supplied a non-commit SHA-1 to
- * {@link RevWalk#lookupCommit(AnyObjectId)}.
- * @throws JGitInternalException
- * a low-level exception of JGit has occurred. The original
- * exception can be retrieved by calling
- * {@link Exception#getCause()}. Expect only
- * {@code IOException's} to be wrapped. Subclasses of
- * {@link IOException} (e.g. {@link MissingObjectException}) are
- * typically not wrapped here but thrown as original exception
- */
- public LogCommand not(AnyObjectId start) throws MissingObjectException,
- IncorrectObjectTypeException {
- return add(false, start);
- }
-
- /**
- * Adds the range {@code since..until}
- *
- * @param since
- * @param until
- * @return {@code this}
- * @throws MissingObjectException
- * the commit supplied is not available from the object
- * database. This usually indicates the supplied commit is
- * invalid, but the reference was constructed during an earlier
- * invocation to {@link RevWalk#lookupCommit(AnyObjectId)}.
- * @throws IncorrectObjectTypeException
- * the object was not parsed yet and it was discovered during
- * parsing that it is not actually a commit. This usually
- * indicates the caller supplied a non-commit SHA-1 to
- * {@link RevWalk#lookupCommit(AnyObjectId)}.
- * @throws JGitInternalException
- * a low-level exception of JGit has occurred. The original
- * exception can be retrieved by calling
- * {@link Exception#getCause()}. Expect only
- * {@code IOException's} to be wrapped. Subclasses of
- * {@link IOException} (e.g. {@link MissingObjectException}) are
- * typically not wrapped here but thrown as original exception
- */
- public LogCommand addRange(AnyObjectId since, AnyObjectId until)
- throws MissingObjectException, IncorrectObjectTypeException {
- return not(since).add(until);
- }
-
- /**
- * Add all refs as commits to start the graph traversal from.
- *
- * @see #add(AnyObjectId)
- * @return {@code this}
- * @throws IOException
- * the references could not be accessed
- */
- public LogCommand all() throws IOException {
- for (Ref ref : getRepository().getAllRefs().values()) {
- if(!ref.isPeeled())
- ref = getRepository().peel(ref);
-
- ObjectId objectId = ref.getPeeledObjectId();
- if (objectId == null)
- objectId = ref.getObjectId();
- RevCommit commit = null;
- try {
- commit = walk.parseCommit(objectId);
- } catch (MissingObjectException e) {
- // ignore: the ref points to an object that does not exist;
- // it should be ignored as traversal starting point.
- } catch (IncorrectObjectTypeException e) {
- // ignore: the ref points to an object that is not a commit
- // (e.g. a tree or a blob);
- // it should be ignored as traversal starting point.
- }
- if (commit != null)
- add(commit);
- }
- return this;
- }
-
- /**
- * Show only commits that affect any of the specified paths. The path must
- * either name a file or a directory exactly. Note that regex expressions or
- * wildcards are not supported.
- *
- * @param path
- * a path is relative to the top level of the repository
- * @return {@code this}
- */
- public LogCommand addPath(String path) {
- checkCallable();
- pathFilters.add(PathFilter.create(path));
- return this;
- }
-
- /**
- * Skip the number of commits before starting to show the commit output.
- *
- * @param skip
- * the number of commits to skip
- * @return {@code this}
- */
- public LogCommand setSkip(int skip) {
- checkCallable();
- this.skip = skip;
- return this;
- }
-
- /**
- * Limit the number of commits to output.
- *
- * @param maxCount
- * the limit
- * @return {@code this}
- */
- public LogCommand setMaxCount(int maxCount) {
- checkCallable();
- this.maxCount = maxCount;
- return this;
- }
-
- private LogCommand add(boolean include, AnyObjectId start)
- throws MissingObjectException, IncorrectObjectTypeException,
- JGitInternalException {
- checkCallable();
- try {
- if (include) {
- walk.markStart(walk.lookupCommit(start));
- startSpecified = true;
- } else
- walk.markUninteresting(walk.lookupCommit(start));
- return this;
- } catch (MissingObjectException e) {
- throw e;
- } catch (IncorrectObjectTypeException e) {
- throw e;
- } catch (IOException e) {
- throw new JGitInternalException(MessageFormat.format(
- JGitText.get().exceptionOccurredDuringAddingOfOptionToALogCommand
- , start), e);
- }
- }
- }
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