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- /*
- * Copyright (C) 2011, Matthias Sohn <matthias.sohn@sap.com>
- * and other copyright owners as documented in the project's IP log.
- *
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Distribution License v1.0 which
- * accompanies this distribution, is reproduced below, and is
- * available at http://www.eclipse.org/org/documents/edl-v10.php
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * - Neither the name of the Eclipse Foundation, Inc. nor the
- * names of its contributors may be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- package org.eclipse.jgit.util;
-
- import java.text.MessageFormat;
- import java.util.Date;
-
- import org.eclipse.jgit.internal.JGitText;
-
- /**
- * Formatter to format timestamps relative to the current time using time units
- * in the format defined by {@code git log --relative-date}.
- */
- public class RelativeDateFormatter {
- final static long SECOND_IN_MILLIS = 1000;
-
- final static long MINUTE_IN_MILLIS = 60 * SECOND_IN_MILLIS;
-
- final static long HOUR_IN_MILLIS = 60 * MINUTE_IN_MILLIS;
-
- final static long DAY_IN_MILLIS = 24 * HOUR_IN_MILLIS;
-
- final static long WEEK_IN_MILLIS = 7 * DAY_IN_MILLIS;
-
- final static long MONTH_IN_MILLIS = 30 * DAY_IN_MILLIS;
-
- final static long YEAR_IN_MILLIS = 365 * DAY_IN_MILLIS;
-
- /**
- * @param when
- * {@link Date} to format
- * @return age of given {@link Date} compared to now formatted in the same
- * relative format as returned by {@code git log --relative-date}
- */
- @SuppressWarnings("boxing")
- public static String format(Date when) {
-
- long ageMillis = SystemReader.getInstance().getCurrentTime()
- - when.getTime();
-
- // shouldn't happen in a perfect world
- if (ageMillis < 0)
- return JGitText.get().inTheFuture;
-
- // seconds
- if (ageMillis < upperLimit(MINUTE_IN_MILLIS))
- return MessageFormat.format(JGitText.get().secondsAgo,
- round(ageMillis, SECOND_IN_MILLIS));
-
- // minutes
- if (ageMillis < upperLimit(HOUR_IN_MILLIS))
- return MessageFormat.format(JGitText.get().minutesAgo,
- round(ageMillis, MINUTE_IN_MILLIS));
-
- // hours
- if (ageMillis < upperLimit(DAY_IN_MILLIS))
- return MessageFormat.format(JGitText.get().hoursAgo,
- round(ageMillis, HOUR_IN_MILLIS));
-
- // up to 14 days use days
- if (ageMillis < 14 * DAY_IN_MILLIS)
- return MessageFormat.format(JGitText.get().daysAgo,
- round(ageMillis, DAY_IN_MILLIS));
-
- // up to 10 weeks use weeks
- if (ageMillis < 10 * WEEK_IN_MILLIS)
- return MessageFormat.format(JGitText.get().weeksAgo,
- round(ageMillis, WEEK_IN_MILLIS));
-
- // months
- if (ageMillis < YEAR_IN_MILLIS)
- return MessageFormat.format(JGitText.get().monthsAgo,
- round(ageMillis, MONTH_IN_MILLIS));
-
- // up to 5 years use "year, months" rounded to months
- if (ageMillis < 5 * YEAR_IN_MILLIS) {
- long years = ageMillis / YEAR_IN_MILLIS;
- String yearLabel = (years > 1) ? JGitText.get().years : //
- JGitText.get().year;
- long months = round(ageMillis % YEAR_IN_MILLIS, MONTH_IN_MILLIS);
- String monthLabel = (months > 1) ? JGitText.get().months : //
- (months == 1 ? JGitText.get().month : ""); //$NON-NLS-1$
- return MessageFormat.format(
- months == 0 ? JGitText.get().years0MonthsAgo : JGitText
- .get().yearsMonthsAgo,
- new Object[] { years, yearLabel, months, monthLabel });
- }
-
- // years
- return MessageFormat.format(JGitText.get().yearsAgo,
- round(ageMillis, YEAR_IN_MILLIS));
- }
-
- private static long upperLimit(long unit) {
- long limit = unit + unit / 2;
- return limit;
- }
-
- private static long round(long n, long unit) {
- long rounded = (n + unit / 2) / unit;
- return rounded;
- }
- }
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