| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. The ASF licenses this file to You |
| * under the Apache License, Version 2.0 (the "License"); you may not |
| * use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.jackrabbit.taglib.size; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| /** |
| * Superclass of SizeCalculator |
| * |
| * @author <a href="mailto:edgarpoce@gmail.com">Edgar Poce</a> |
| */ |
| public abstract class AbstractSizeCalculator implements SizeCalculator |
| { |
| /** Logger */ |
| private static Log log = LogFactory.getLog(AbstractSizeCalculator.class); |
| |
| /** Unit */ |
| protected int unit = SizeCalculator.BITS; |
| |
| /** |
| * Unit conversion |
| * @param bits |
| * @param unit |
| * @return |
| */ |
| protected double convert(long size, int unit) { |
| switch (unit) |
| { |
| case SizeCalculator.BITS: |
| return size ; |
| case SizeCalculator.BYTES: |
| return size / 8d ; |
| case SizeCalculator.KILOBYTES: |
| return size / 8192d ; |
| case SizeCalculator.MEGABYTES: |
| return size / 8388608d ; |
| case SizeCalculator.GIGABYTES: |
| return size / 8589934592d ; |
| default: |
| String msg = "No such unit." + unit ; |
| log.error(msg); |
| throw new IllegalArgumentException(msg) ; |
| } |
| } |
| |
| /** @inheritDoc */ |
| public void setUnit(int unit) |
| { |
| this.unit = unit; |
| } |
| |
| } |