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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.loganalysis.util;
import java.util.concurrent.TimeUnit;
/**
* Utility methods for number formatting
*/
public class NumberFormattingUtil {
private NumberFormattingUtil() {
}
/**
* Convert days/hours/mins/secs/msecs into milliseconds.
*/
public static long getMs(long days, long hours, long mins, long secs, long msecs) {
return (((24 * days + hours) * 60 + mins) * 60 + secs) * 1000 + msecs;
}
/**
* Convert hours/mins/secs/msecs into milliseconds.
*/
public static long getMs(long hours, long mins, long secs, long msecs) {
return getMs(0, hours, mins, secs, msecs);
}
/**
* Parses a string into a long, or returns 0 if the string is null.
*
* @param s a {@link String} containing the long representation to be parsed
* @return the long represented by the argument in decimal, or 0 if the string is {@code null}.
* @throws NumberFormatException if the string is not {@code null} or does not contain a
* parsable long.
*/
public static long parseLongOrZero(String s) throws NumberFormatException {
if (s == null) {
return 0;
}
return Long.parseLong(s);
}
/**
* Parses a string into a int, or returns 0 if the string is null.
*
* @param s a {@link String} containing the int representation to be parsed
* @return the int represented by the argument in decimal, or 0 if the string is {@code null}.
* @throws NumberFormatException if the string is not {@code null} or does not contain a
* parsable long.
*/
public static int parseIntOrZero(String s) throws NumberFormatException {
if (s == null) {
return 0;
}
return Integer.parseInt(s);
}
/**
* Converts milliseconds to days/hours/mins/secs
*
* @param ms elapsed time in ms
* @return the duration in days/hours/mins/secs
*/
public static String getDuration(long ms) {
if (ms <= 0) {
return "Not a valid time";
}
final long days = TimeUnit.MILLISECONDS.toDays(ms);
final long hrs = TimeUnit.MILLISECONDS.toHours(ms - TimeUnit.DAYS.toMillis(days));
final long mins = TimeUnit.MILLISECONDS.toMinutes(ms - TimeUnit.DAYS.toMillis(days)
- TimeUnit.HOURS.toMillis(hrs));
final long secs = TimeUnit.MILLISECONDS.toSeconds(ms - TimeUnit.DAYS.toMillis(days)
- TimeUnit.HOURS.toMillis(hrs) - TimeUnit.MINUTES.toMillis(mins));
return String.format("%dd %dh %dm %ds", days, hrs, mins, secs);
}
}
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