void checkIncludeOrFile()

in src/main/java/com/googlesource/gerrit/plugins/findowners/OwnersValidator.java [329:385]
52 lines of code
10 McCabe index (conditional complexity)

    void checkIncludeOrFile(String project, String path, int num, String line) {
      // project is the including file's project, not necessarily the same as CL event's.
      String directive = Parser.getIncludeOrFile(line);
      String[] KPF = Parser.parseInclude(project, directive);
      if (KPF == null || KPF[1] == null || KPF[2] == null) {
        addSyntaxError(qualifiedPath(project, path), num, line);
      }
      String file = KPF[2];
      String curDir = Util.getParentDir(path);
      String repoFile = normalizeChangedFilePath(curDir, file);
      // Check each file only once.
      String key = KPF[1] + ":" + repoFile;
      if (checkedFiles.contains(key)) {
        addVerboseMsg("skip repeated include of " + key);
        return;
      }
      checkedFiles.add(key);
      if (KPF[1].equals(event.project.getName())) {
        if (allFiles.get(repoFile) != null) {
          // Case (1): included file is in current CL.
          addVerboseMsg("check changed file " + key);
          try {
            ObjectLoader ol = event.revWalk.getObjectReader().open(allFiles.get(repoFile));
            try (InputStream in = ol.openStream()) {
              if (RawText.isBinary(in)) {
                addError(path + " is a binary file"); // OWNERS files cannot be binary
                return;
              }
            }
            checkFile(KPF[1], repoFile, ol);
          } catch (Exception e) {
            addError("cannot open changed file: " + path);
          }
          return;
        }
      }
      // Included file is in repository or other CL.
      addVerboseMsg("check repo file " + key);
      String content =
          OwnersDb.getRepoFile(
              null, /* permissionBackend */
              readFiles,
              repoManager,
              null,
              null,
              KPF[1],
              event.refName,
              repoFile,
              new ArrayList<>());
      if (isNullOrEmpty(content)) { // file not found or not readable.
        addVerboseMsg("cannot find file: " + key);
        // unchecked: including-file-path : line number : source line
        addMsg("unchecked: " + qualifiedPath(project, path) + ":" + num + ": " + directive);
      } else {
        checkFile(KPF[1], repoFile, content);
      }
    }