| /* |
| * Copyright 2011 gitblit.com. |
| * |
| * Licensed 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 com.gitblit.utils; |
| |
| import java.text.DecimalFormat; |
| import java.text.FieldPosition; |
| import java.text.Format; |
| import java.text.ParsePosition; |
| |
| /** |
| * ByteFormat is a formatter which takes numbers and returns filesizes in bytes, |
| * kilobytes, megabytes, or gigabytes. |
| * |
| * @author James Moger |
| * |
| */ |
| public class ByteFormat extends Format { |
| |
| private static final long serialVersionUID = 1L; |
| |
| public ByteFormat() { |
| } |
| |
| public String format(long value) { |
| return format(Long.valueOf(value)); |
| } |
| |
| @Override |
| public StringBuffer format(Object obj, StringBuffer buf, FieldPosition pos) { |
| if (obj instanceof Number) { |
| long numBytes = ((Number) obj).longValue(); |
| if (numBytes < 1024) { |
| DecimalFormat formatter = new DecimalFormat("#,##0"); |
| buf.append(formatter.format((double) numBytes)).append(" b"); |
| } else if (numBytes < 1024 * 1024) { |
| DecimalFormat formatter = new DecimalFormat("#,##0"); |
| buf.append(formatter.format(numBytes / 1024.0)).append(" KB"); |
| } else if (numBytes < 1024 * 1024 * 1024) { |
| DecimalFormat formatter = new DecimalFormat("#,##0.0"); |
| buf.append(formatter.format(numBytes / (1024.0 * 1024.0))).append(" MB"); |
| } else { |
| DecimalFormat formatter = new DecimalFormat("#,##0.0"); |
| buf.append(formatter.format(numBytes / (1024.0 * 1024.0 * 1024.0))) |
| .append(" GB"); |
| } |
| } |
| return buf; |
| } |
| |
| @Override |
| public Object parseObject(String source, ParsePosition pos) { |
| return null; |
| } |
| } |