private DirectoryInfo expand()

in clearcase-common/src/jetbrains/buildServer/vcs/clearcase/Util.java [459:519]
48 lines of code
12 McCabe index (conditional complexity)

      private DirectoryInfo expand(int baseDirectoryPathLength, File currentDirectory, Pattern pattern, boolean recursive) {

        LOGGER.info("\n\tcurrent directory: \"" + currentDirectory + "\"\n\tpattern: \"" + pattern + "\"");

        // feed the listeners
        propertyChangeSupport.firePropertyChange(FILE_PROPERTY, null, currentDirectory);

        if (!currentDirectory.exists()) {
          LOGGER.warn(currentDirectory + " does not exist");
          return null;
        }

        if (!currentDirectory.isDirectory()) {
          LOGGER.warn(currentDirectory + " is no directory");
          return null;
        }

        if (!currentDirectory.canRead()) {
          LOGGER.warn("can not read " + currentDirectory);
          return null;
        }

        if (pattern == null) {
          throw new IllegalArgumentException("pattern must not be null");
        }

        LOGGER.debug("recursing directory " + currentDirectory);
        long tmpByteCount = 0;
        List<File> files = new ArrayList<File>();
        for (File subFile : currentDirectory.listFiles()) {

          // check if subfile matches
          String relativePath = subFile.getPath().substring(baseDirectoryPathLength);
          if (pattern.matcher(relativePath).matches()) {
            LOGGER.debug(subFile + " matches");
            if (subFile.isDirectory()) {
              // copy directories itself only when using recursive mode
              if (recursive) {
                files.add(subFile);
              }
            } else {
              files.add(subFile);
              tmpByteCount += subFile.length();
            }
          } else {
            LOGGER.debug(subFile + " does not match");
          }

          // recurse directories
          if (subFile.isDirectory()) {
            if (recursive) {
              DirectoryInfo tmpInfo = expand(baseDirectoryPathLength, subFile, pattern, recursive);
              if (tmpInfo != null) {
                files.addAll(tmpInfo.getFiles());
                tmpByteCount += tmpInfo.getByteCount();
              }
            }
          }
        }
        return new DirectoryInfo(currentDirectory, files, tmpByteCount);
      }