timeconverter.java

用于传感器网络的节点操作系统 TinyOS 结构设计非常有意思

/*									tab:2
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 * of California.  All rights reserved.
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 * Permission to use, copy, modify, and distribute this software and
 * its documentation for any purpose, without fee, and without written
 * agreement is hereby granted, provided that the above copyright
 * notice and the following two paragraphs appear in all copies of
 * this software.
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 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY
 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
 * DAMAGES ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
 * DOCUMENTATION, EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE
 * PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
 * CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT,
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 *
 * Authors:		Phil Levis
 * Use:                 Converts simulation time values to real world time.
 *                      (long to h:m:s)
 */

package net.tinyos.sim;


public class TimeConverter {

    public static String convert(long time) {
	String timeStr = "";

	long seconds = time / (long)4000000;
	long minutes = seconds / (long)60;
	long hours = minutes / (long)60;
	long bSeconds = time % (long) 4000000;
	
	bSeconds *= 250;
	seconds %= 60;
	minutes %= 60;
	
	timeStr += hours + ":" + minutes + ":" + seconds;
	String bString = "" + bSeconds;
	while(bString.length() < 9) {
	    bString = "0" + bString;
	}
	
	timeStr += "." + bString;
	return timeStr;
    }
}