/*
* Copyright 2000-2009 JetBrains s.r.o.
*
* 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.
*/
/*
* @author max
*/
package com.intellij.util.io.zip;
import java.util.Date;
public class DosTime {
private DosTime() {
}
/*
* Converts DOS time to Java time (number of milliseconds since epoch).
*/
public static long dosToJavaTime(long dtime) {
Date d = new Date((int)(((dtime >> 25) & 0x7f) + 80), (int)(((dtime >> 21) & 0x0f) - 1), (int)((dtime >> 16) & 0x1f),
(int)((dtime >> 11) & 0x1f), (int)((dtime >> 5) & 0x3f), (int)((dtime << 1) & 0x3e));
return d.getTime();
}
/*
* Converts Java time to DOS time.
*/
public static long javaToDosTime(long time) {
Date d = new Date(time);
int year = d.getYear() + 1900;
if (year < 1980) {
return (1 << 21) | (1 << 16);
}
return (year - 1980) << 25 |
(d.getMonth() + 1) << 21 |
d.getDate() << 16 |
d.getHours() << 11 |
d.getMinutes() << 5 |
d.getSeconds() >> 1;
}
}