gov.nih.nci.cabig.caaers.utils.DurationUtils.java Source code

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Here is the source code for gov.nih.nci.cabig.caaers.utils.DurationUtils.java

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/*******************************************************************************
 * Copyright SemanticBits, Northwestern University and Akaza Research
 * 
 * Distributed under the OSI-approved BSD 3-Clause License.
 * See http://ncip.github.com/caaers/LICENSE.txt for details.
 ******************************************************************************/
package gov.nih.nci.cabig.caaers.utils;

import org.apache.commons.lang.time.DurationFormatUtils;

/**
 * This method will print the duration in a displayable fashion.
 * @author Biju Joseph
 *
 */
public class DurationUtils {

    private static final long SECOND = 1000L;
    private static final long MINUTE = SECOND * 60;
    private static final long HOUR = MINUTE * 60;
    private static final long DAY = HOUR * 24;
    private static final long MONTH = DAY * 30;
    private static final long YEAR = DAY * 365;

    public static String formatDuration(long actualDuration, String format) {
        String msgPrefix = "Due in ";
        String msgSuffix = "overdue";
        if (actualDuration < 0) {
            msgPrefix = "";
        } else {
            msgSuffix = "";
        }

        long duration = Math.abs(actualDuration);

        int years = (format.contains("y")) ? Integer.parseInt(DurationFormatUtils.formatDuration(duration, "y"))
                : 0;
        duration -= (years * YEAR);
        int months = (format.contains("M")) ? Integer.parseInt(DurationFormatUtils.formatDuration(duration, "M"))
                : 0;
        duration -= (months * MONTH);
        int days = (format.contains("d")) ? Integer.parseInt(DurationFormatUtils.formatDuration(duration, "d")) : 0;
        duration -= (days * DAY);
        int hours = (format.contains("H")) ? Integer.parseInt(DurationFormatUtils.formatDuration(duration, "H"))
                : 0;
        duration -= (hours * HOUR);
        int minutes = (format.contains("m")) ? Integer.parseInt(DurationFormatUtils.formatDuration(duration, "m"))
                : 0;
        duration -= (minutes * MINUTE);
        int seconds = (format.contains("s")) ? Integer.parseInt(DurationFormatUtils.formatDuration(duration, "s"))
                : 0;

        //apply rounding to days / Hours / minutes
        if (format.contains("d") && format.contains("H")) {
            if (hours > 12) {
                days += 1;
            }
            hours = 0;
        }

        //apply rounding of hours
        if (format.contains("m") && format.contains("H")) {
            if (minutes > 30) {
                hours += 1;
            }
            minutes = 0;
        }

        //apply rounding of minutes
        if (format.contains("m") && format.contains("s")) {
            if (seconds > 30) {
                minutes += 1;
            }
            seconds = 0;
        }

        StringBuffer sb = new StringBuffer(msgPrefix);
        if (years > 0) {
            sb.append(years).append(years > 1 ? " years" : " year").append(" ");
        }
        if (months > 0) {
            sb.append(months).append(months > 1 ? " months" : " month").append(" ");
        }
        if (days > 0) {
            sb.append(days).append(days > 1 ? " days" : " day").append(" ");
        }
        if (hours > 0) {
            sb.append(hours).append(hours > 1 ? " hours" : " hour").append(" ");
        }
        if (minutes > 0) {
            sb.append(minutes).append(minutes > 1 ? " minutes" : " minute").append(" ");
        }
        if (seconds > 0) {
            sb.append(seconds).append(seconds > 1 ? " seconds" : " second").append(" ");
        }
        sb.append(msgSuffix);
        return sb.toString();

    }
}