/*
* Copyright (C) 2009 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.settings.fuelgauge;
import android.content.Context;
import com.android.settings.R;
/**
* Contains utility functions for formatting elapsed time and consumed bytes
*/
public class Utils {
private static final int SECONDS_PER_MINUTE = 60;
private static final int SECONDS_PER_HOUR = 60 * 60;
private static final int SECONDS_PER_DAY = 24 * 60 * 60;
/**
* Returns elapsed time for the given millis, in the following format:
* 2d 5h 40m 29s
* @param context the application context
* @param millis the elapsed time in milli seconds
* @return the formatted elapsed time
*/
public static String formatElapsedTime(Context context, double millis) {
StringBuilder sb = new StringBuilder();
int seconds = (int) Math.floor(millis / 1000);
int days = 0, hours = 0, minutes = 0;
if (seconds > SECONDS_PER_DAY) {
days = seconds / SECONDS_PER_DAY;
seconds -= days * SECONDS_PER_DAY;
}
if (seconds > SECONDS_PER_HOUR) {
hours = seconds / SECONDS_PER_HOUR;
seconds -= hours * SECONDS_PER_HOUR;
}
if (seconds > SECONDS_PER_MINUTE) {
minutes = seconds / SECONDS_PER_MINUTE;
seconds -= minutes * SECONDS_PER_MINUTE;
}
if (days > 0) {
sb.append(context.getString(R.string.battery_history_days,
days, hours, minutes, seconds));
} else if (hours > 0) {
sb.append(context.getString(R.string.battery_history_hours, hours, minutes, seconds));
} else if (minutes > 0) {
sb.append(context.getString(R.string.battery_history_minutes, minutes, seconds));
} else {
sb.append(context.getString(R.string.battery_history_seconds, seconds));
}
return sb.toString();
}
/**
* Formats data size in KB, MB, from the given bytes.
* @param context the application context
* @param bytes data size in bytes
* @return the formatted size such as 4.52 MB or 245 KB or 332 bytes
*/
public static String formatBytes(Context context, double bytes) {
// TODO: I18N
if (bytes > 1000 * 1000) {
return String.format("%.2f MB", ((int) (bytes / 1000)) / 1000f);
} else if (bytes > 1024) {
return String.format("%.2f KB", ((int) (bytes / 10)) / 100f);
} else {
return String.format("%d bytes", (int) bytes);
}
}
}