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/*
* SonarQube
* Copyright (C) 2009-2016 SonarSource SA
* mailto:contact AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.api.utils;
import java.io.Serializable;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.annotation.Nullable;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.builder.ToStringBuilder;
import org.apache.commons.lang.builder.ToStringStyle;
/**
* @since 4.3
*/
public class Duration implements Serializable {
public static final String DAY = "d";
public static final String HOUR = "h";
public static final String MINUTE = "min";
private static final short MINUTES_IN_ONE_HOUR = 60;
private final long durationInMinutes;
private Duration(long durationInMinutes) {
this.durationInMinutes = durationInMinutes;
}
private Duration(int days, int hours, int minutes, int hoursInDay) {
this(((long) days * hoursInDay * MINUTES_IN_ONE_HOUR) + (hours * MINUTES_IN_ONE_HOUR) + minutes);
}
/**
* Create a Duration from a number of minutes.
*/
public static Duration create(long durationInMinutes) {
return new Duration(durationInMinutes);
}
/**
* Create a Duration from a text duration and the number of hours in a day.
* <br>
* For instance, Duration.decode("1d 1h", 8) will have a number of minutes of 540 (1*8*60 + 60).
* */
public static Duration decode(String text, int hoursInDay) {
int days = 0;
int hours = 0;
int minutes = 0;
String sanitizedText = StringUtils.deleteWhitespace(text);
Pattern pattern = Pattern.compile("\\s*+(?:(\\d++)\\s*+" + DAY + ")?+\\s*+(?:(\\d++)\\s*+" + HOUR + ")?+\\s*+(?:(\\d++)\\s*+" + MINUTE + ")?+\\s*+");
Matcher matcher = pattern.matcher(text);
try {
if (matcher.find()) {
String daysDuration = matcher.group(1);
if (daysDuration != null) {
days = Integer.parseInt(daysDuration);
sanitizedText = sanitizedText.replace(daysDuration + DAY, "");
}
String hoursText = matcher.group(2);
if (hoursText != null) {
hours = Integer.parseInt(hoursText);
sanitizedText = sanitizedText.replace(hoursText + HOUR, "");
}
String minutesText = matcher.group(3);
if (minutesText != null) {
minutes = Integer.parseInt(minutesText);
sanitizedText = sanitizedText.replace(minutesText + MINUTE, "");
}
if (sanitizedText.isEmpty()) {
return new Duration(days, hours, minutes, hoursInDay);
}
}
throw invalid(text, null);
} catch (NumberFormatException e) {
throw invalid(text, e);
}
}
/**
* Return the duration in text, by using the given hours in day parameter to process hours.
* <br/>
* Duration.decode("1d 1h", 8).encode(8) will return "1d 1h"
* Duration.decode("2d", 8).encode(16) will return "1d"
*/
public String encode(int hoursInDay) {
int days = ((Double) ((double) durationInMinutes / hoursInDay / MINUTES_IN_ONE_HOUR)).intValue();
Long remainingDuration = durationInMinutes - (days * hoursInDay * MINUTES_IN_ONE_HOUR);
int hours = ((Double) (remainingDuration.doubleValue() / MINUTES_IN_ONE_HOUR)).intValue();
remainingDuration = remainingDuration - (hours * MINUTES_IN_ONE_HOUR);
int minutes = remainingDuration.intValue();
StringBuilder stringBuilder = new StringBuilder();
if (days > 0) {
stringBuilder.append(days);
stringBuilder.append(DAY);
}
if (hours > 0) {
stringBuilder.append(hours);
stringBuilder.append(HOUR);
}
if (minutes > 0) {
stringBuilder.append(minutes);
stringBuilder.append(MINUTE);
}
return stringBuilder.toString();
}
/**
* Return the duration in minutes.
* <br>
* For instance, Duration.decode(1h, 24).toMinutes() will return 60.
*/
public long toMinutes() {
return durationInMinutes;
}
/**
* Return true if the given duration is greater than the current one.
*/
public boolean isGreaterThan(Duration other) {
return toMinutes() > other.toMinutes();
}
/**
* Add the given duration to the current one.
*/
public Duration add(Duration with) {
return Duration.create(durationInMinutes + with.durationInMinutes);
}
/**
* Subtract the given duration to the current one.
*/
public Duration subtract(Duration with) {
return Duration.create(durationInMinutes - with.durationInMinutes);
}
/**
* Multiply the duration with the given factor.
*/
public Duration multiply(int factor) {
return Duration.create(durationInMinutes * factor);
}
private static IllegalArgumentException invalid(String text, @Nullable Exception e) {
throw new IllegalArgumentException(String.format("Duration '%s' is invalid, it should use the following sample format : 2d 10h 15min", text), e);
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
Duration that = (Duration) o;
return durationInMinutes == that.durationInMinutes;
}
@Override
public int hashCode() {
return (int) (durationInMinutes ^ (durationInMinutes >>> 32));
}
@Override
public String toString() {
return ToStringBuilder.reflectionToString(this, ToStringStyle.SHORT_PREFIX_STYLE);
}
}
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