private DiffEntry findRename(RevCommit parent, RevCommit commit, PathFilter path)
      throws IOException {
    if (renameDetector == null) return null;

    treeWalk.setFilter(TreeFilter.ANY_DIFF);
    treeWalk.reset(parent.getTree(), commit.getTree());
    renameDetector.reset();
    renameDetector.addAll(DiffEntry.scan(treeWalk));
    for (DiffEntry ent : renameDetector.compute()) {
      if (isRename(ent) && ent.getNewPath().equals(path.getPath())) return ent;
    }
    return null;
  }
Exemple #2
0
  public String getDiffText(String str) {
    int filenubs = 0;
    int lines = 0;
    FileRepositoryBuilder builder = new FileRepositoryBuilder();
    File gitDir = new File("F:/work/demo-rio/.git");
    Repository repository = null;
    try {
      if (git == null) {
        git = Git.open(gitDir);
      }
    } catch (Exception e1) {
      // TODO Auto-generated catch block
      e1.printStackTrace();
    }
    try {
      String cid = str;
      repository = builder.setGitDir(gitDir).readEnvironment().findGitDir().build();
      RevWalk walk = new RevWalk(repository);
      ObjectId objId = ObjectId.fromString(cid);
      RevCommit commit = walk.parseCommit(objId);
      System.out.println(commit.getFullMessage());

      TreeWalk tw = new TreeWalk(repository);

      RevCommit[] parent_commits = commit.getParents();
      if (parent_commits.length == 0) {
        throw new Exception("当前只有一个版本");
      }

      ObjectId objId2 = parent_commits[0].toObjectId();
      RevCommit paren_commit = walk.parseCommit(objId2);
      tw.addTree(paren_commit.getTree());
      tw.addTree(commit.getTree());
      tw.setRecursive(true);

      ByteArrayOutputStream out = new ByteArrayOutputStream();
      DiffFormatter df = new DiffFormatter(out);
      df.setRepository(git.getRepository());
      RenameDetector rd = new RenameDetector(repository);
      rd.addAll(DiffEntry.scan(tw));
      List<DiffEntry> diffEntries = rd.compute();
      if (diffEntries != null || diffEntries.size() != 0) {

        Iterator<DiffEntry> iterator = new ArrayList<DiffEntry>(diffEntries).iterator();
        DiffEntry diffEntry = null;
        while (iterator.hasNext()) {
          diffEntry = iterator.next();
          String changeType = diffEntry.getChangeType().toString();
          String type = "";
          if (changeType.equals("DELETE")) {
            type = ConfigUtil.getFileType(diffEntry.getOldPath());
            filenubs++;
            System.out.println(diffEntry.getOldPath());
          } else {
            type = ConfigUtil.getFileType(diffEntry.getNewPath());
            filenubs++;
            System.out.println(diffEntry.getNewPath());
          }
          // 检查文件的后缀
          // System.out.println(type);
          if (fileTypes.contains(type)) {
            df.format(diffEntry);
            String diffText = out.toString("UTF-8");
            lines += scanDiffText(diffText);
          }
        }
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
    return filenubs + "&" + lines;
    // System.out.println("the changed file nubs: "+ filenubs);
    // System.out.println("the changed linr nubs: "+ lines);
  }