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RePlay is a fork of the Play1 framework, created by Codeborne.

There is a newer version: 2.6.3

package play.libs;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * Time utils
 *
 * Provides a parser for time expression.
 * 
 * Time expressions provide the ability to specify complex time combinations
 * such as "2d", "1w2d3h10s" or "2d4h10s".
 * 
 *
 */
public class Time {
    private static final Pattern p = Pattern.compile("(([0-9]+?)((d|h|mi|min|mn|s)))+?");
    private static final Integer MINUTE = 60;
    private static final Integer HOUR = 60 * MINUTE;
    private static final Integer DAY = 24 * HOUR;

    /**
     * Parse a duration
     *
     * @param duration
     *            3h, 2mn, 7s or combination 2d4h10s, 1w2d3h10s
     * @return The number of seconds
     */
    public static int parseDuration(String duration) {
        if (duration == null) {
            throw new IllegalArgumentException("duration cannot be null");
        }

        Matcher matcher = p.matcher(duration);
        int seconds = 0;
        if (!matcher.matches()) {
            throw new IllegalArgumentException(String.format("Invalid duration pattern: \"%s\"", duration));
        }

        matcher.reset();
        while (matcher.find()) {
            switch (matcher.group(3)) {
                case "d":
                    seconds += Integer.parseInt(matcher.group(2)) * DAY;
                    break;
                case "h":
                    seconds += Integer.parseInt(matcher.group(2)) * HOUR;
                    break;
                case "mi":
                case "min":
                case "mn":
                    seconds += Integer.parseInt(matcher.group(2)) * MINUTE;
                    break;
                default:
                    seconds += Integer.parseInt(matcher.group(2));
                    break;
            }
        }

        return seconds;
    }
}