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/*
* SonarQube
* Copyright (C) 2009-2024 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.scm.git;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.blame.BlameResult;
import org.eclipse.jgit.diff.RawTextComparator;
import org.sonar.api.batch.scm.BlameLine;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static java.util.Collections.emptyList;
public class JGitBlameCommand {
private static final Logger LOG = LoggerFactory.getLogger(JGitBlameCommand.class);
public List<BlameLine> blame(Git git, String filename) {
BlameResult blameResult;
try {
blameResult = git.blame()
// Equivalent to -w command line option
.setTextComparator(RawTextComparator.WS_IGNORE_ALL)
.setFilePath(filename).call();
} catch (Exception e) {
throw new IllegalStateException("Unable to blame file " + filename, e);
}
List<BlameLine> lines = new ArrayList<>();
if (blameResult == null) {
LOG.debug("Unable to blame file {}. It is probably a symlink.", filename);
return emptyList();
}
for (int i = 0; i < blameResult.getResultContents().size(); i++) {
if (blameResult.getSourceAuthor(i) == null || blameResult.getSourceCommit(i) == null) {
LOG.debug("Unable to blame file {}. No blame info at line {}. Is file committed? [Author: {} Source commit: {}]", filename, i + 1,
blameResult.getSourceAuthor(i), blameResult.getSourceCommit(i));
return emptyList();
}
lines.add(new BlameLine()
.date(blameResult.getSourceCommitter(i).getWhen())
.revision(blameResult.getSourceCommit(i).getName())
.author(blameResult.getSourceAuthor(i).getEmailAddress()));
}
return lines;
}
}
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