public RolloverDescription rollover()

in src/main/java/org/apache/log4j/rolling/FixedWindowRollingPolicy.java [155:195]

33 lines of code
6 McCabe index (conditional complexity)


  public RolloverDescription rollover(final String currentFileName) {
    if (maxIndex >= 0) {
      int purgeStart = minIndex;

      if (!explicitActiveFile) {
        purgeStart++;
      }

      if (!purge(purgeStart, maxIndex)) {
        return null;
      }

      StringBuffer buf = new StringBuffer();
      formatFileName(new Integer(purgeStart), buf);

      String renameTo = buf.toString();
      String compressedName = renameTo;
      Action compressAction = null;

      if (renameTo.endsWith(".gz")) {
        renameTo = renameTo.substring(0, renameTo.length() - 3);
        compressAction =
          new GZCompressAction(
            new File(renameTo), new File(compressedName), true);
      } else if (renameTo.endsWith(".zip")) {
        renameTo = renameTo.substring(0, renameTo.length() - 4);
        compressAction =
          new ZipCompressAction(
            new File(renameTo), new File(compressedName), true);
      }

      FileRenameAction renameAction =
        new FileRenameAction(
          new File(currentFileName), new File(renameTo), false);

      return new RolloverDescriptionImpl(
        currentFileName, false, renameAction, compressAction);
    }

    return null;
  }