protected void doGetHtml()

in java/com/google/gitiles/DiffServlet.java [58:116]
53 lines of code
11 McCabe index (conditional complexity)

  protected void doGetHtml(HttpServletRequest req, HttpServletResponse res) throws IOException {
    GitilesView view = ViewFilter.getView(req);
    Repository repo = ServletUtils.getRepository(req);

    try (RevWalk walk = new RevWalk(repo);
        TreeWalk tw = newTreeWalk(walk, view)) {
      boolean showCommit;
      boolean isFile;
      AbstractTreeIterator oldTree;
      AbstractTreeIterator newTree;
      try {
        if (tw == null && !view.getPathPart().isEmpty()) {
          throw new GitilesRequestFailureException(FailureReason.OBJECT_NOT_FOUND);
        }
        isFile = tw != null && isFile(tw);

        // If we are viewing the diff between a commit and one of its parents,
        // include the commit detail in the rendered page.
        showCommit = isParentOf(walk, view.getOldRevision(), view.getRevision());
        oldTree = getTreeIterator(walk, view.getOldRevision().getId());
        newTree = getTreeIterator(walk, view.getRevision().getId());
      } catch (MissingObjectException e) {
        throw new GitilesRequestFailureException(FailureReason.OBJECT_NOT_FOUND, e);
      } catch (IncorrectObjectTypeException e) {
        throw new GitilesRequestFailureException(FailureReason.INCORRECT_OBJECT_TYPE, e);
      }

      Map<String, Object> data = getData(req);
      data.put("title", "Diff - " + view.getRevisionRange());
      if (showCommit) {
        Set<Field> fs = CommitSoyData.DEFAULT_FIELDS;
        if (isFile) {
          fs = Field.setOf(fs, Field.PARENT_BLAME_URL);
        }
        GitilesAccess access = getAccess(req);
        DateFormatter df = new DateFormatter(access, Format.DEFAULT);
        data.put(
            "commit",
            new CommitSoyData()
                .setLinkifier(linkifier)
                .setArchiveFormat(getArchiveFormat(access))
                .toSoyData(req, walk, walk.parseCommit(view.getRevision().getId()), fs, df));
      }
      if (!data.containsKey("repositoryName") && (view.getRepositoryName() != null)) {
        data.put("repositoryName", view.getRepositoryName());
      }
      if (!data.containsKey("breadcrumbs")) {
        data.put("breadcrumbs", view.getBreadcrumbs());
      }

      setCacheHeaders(req, res);
      try (OutputStream out =
              startRenderStreamingHtml(
                  req, res, "com.google.gitiles.templates.DiffDetail.diffDetail", data);
          DiffFormatter diff = new HtmlDiffFormatter(renderer, view, out)) {
        formatDiff(repo, oldTree, newTree, view.getPathPart(), diff);
      }
    }
  }