001/*
002 * SonarQube, open source software quality management tool.
003 * Copyright (C) 2008-2014 SonarSource
004 * mailto:contact AT sonarsource DOT com
005 *
006 * SonarQube is free software; you can redistribute it and/or
007 * modify it under the terms of the GNU Lesser General Public
008 * License as published by the Free Software Foundation; either
009 * version 3 of the License, or (at your option) any later version.
010 *
011 * SonarQube is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014 * Lesser General Public License for more details.
015 *
016 * You should have received a copy of the GNU Lesser General Public License
017 * along with this program; if not, write to the Free Software Foundation,
018 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
019 */
020package org.sonar.xoo.scm;
021
022import com.google.common.annotations.VisibleForTesting;
023import com.google.common.base.Charsets;
024import org.apache.commons.io.FileUtils;
025import org.apache.commons.lang.StringUtils;
026import org.sonar.api.batch.fs.InputFile;
027import org.sonar.api.batch.scm.BlameCommand;
028import org.sonar.api.batch.scm.BlameLine;
029import org.sonar.api.utils.DateUtils;
030
031import java.io.File;
032import java.io.IOException;
033import java.util.ArrayList;
034import java.util.List;
035
036public class XooBlameCommand extends BlameCommand {
037
038  private static final String SCM_EXTENSION = ".scm";
039
040  @Override
041  public void blame(BlameInput input, BlameOutput result) {
042    for (InputFile inputFile : input.filesToBlame()) {
043      processFile(inputFile, result);
044    }
045  }
046
047  @VisibleForTesting
048  protected void processFile(InputFile inputFile, BlameOutput result) {
049    File ioFile = inputFile.file();
050    File scmDataFile = new java.io.File(ioFile.getParentFile(), ioFile.getName() + SCM_EXTENSION);
051    if (!scmDataFile.exists()) {
052      return;
053    }
054
055    try {
056      List<String> lines = FileUtils.readLines(scmDataFile, Charsets.UTF_8.name());
057      List<BlameLine> blame = new ArrayList<BlameLine>(lines.size());
058      int lineNumber = 0;
059      for (String line : lines) {
060        lineNumber++;
061        if (StringUtils.isNotBlank(line)) {
062          // revision,author,dateTime
063          String[] fields = StringUtils.splitPreserveAllTokens(line, ',');
064          if (fields.length < 3) {
065            throw new IllegalStateException("Not enough fields on line " + lineNumber);
066          }
067          String revision = StringUtils.trimToNull(fields[0]);
068          String author = StringUtils.trimToNull(fields[1]);
069          BlameLine blameLine = new BlameLine().revision(revision).author(author);
070          String dateStr = StringUtils.trimToNull(fields[2]);
071          // Will throw an exception, when date is not in format "yyyy-MM-dd"
072          if (dateStr != null) {
073            blameLine.date(DateUtils.parseDate(dateStr));
074          }
075          blame.add(blameLine);
076        }
077      }
078      result.blameResult(inputFile, blame);
079    } catch (IOException e) {
080      throw new IllegalStateException(e);
081    }
082  }
083}