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/*
* Copyright (C) 2006 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 android.text.format;
import android.content.Context;
/**
* Utility class to aid in formatting common values that are not covered
* by the standard java.util.Formatter.
*/
public final class Formatter {
/**
* Formats a content size to be in the form of bytes, kilobytes, megabytes, etc
*
* @param context Context to use to load the localized units
* @param number size value to be formated
* @return formated string with the number
*/
public static String formatFileSize(Context context, long number) {
return formatFileSize(context, number, false);
}
/**
* Like {@link #formatFileSize}, but trying to generate shorter numbers
* (showing fewer digits of precisin).
*/
public static String formatShortFileSize(Context context, long number) {
return formatFileSize(context, number, true);
}
private static String formatFileSize(Context context, long number, boolean shorter) {
if (context == null) {
return "";
}
float result = number;
int suffix = com.android.internal.R.string.byteShort;
if (result > 900) {
suffix = com.android.internal.R.string.kilobyteShort;
result = result / 1024;
}
if (result > 900) {
suffix = com.android.internal.R.string.megabyteShort;
result = result / 1024;
}
if (result > 900) {
suffix = com.android.internal.R.string.gigabyteShort;
result = result / 1024;
}
if (result > 900) {
suffix = com.android.internal.R.string.terabyteShort;
result = result / 1024;
}
if (result > 900) {
suffix = com.android.internal.R.string.petabyteShort;
result = result / 1024;
}
String value;
if (result < 1) {
value = String.format("%.2f", result);
} else if (result < 10) {
if (shorter) {
value = String.format("%.1f", result);
} else {
value = String.format("%.2f", result);
}
} else if (result < 100) {
if (shorter) {
value = String.format("%.0f", result);
} else {
value = String.format("%.2f", result);
}
} else {
value = String.format("%.0f", result);
}
return context.getResources().
getString(com.android.internal.R.string.fileSizeSuffix,
value, context.getString(suffix));
}
/**
* Returns a string in the canonical IP format ###.###.###.### from a packed integer containing
* the IP address. The IP address is expected to be in little-endian format (LSB first). That
* is, 0x01020304 will return "4.3.2.1".
*
* @param addr the IP address as a packed integer with LSB first.
* @return string with canonical IP address format.
*/
public static String formatIpAddress(int addr) {
StringBuffer buf = new StringBuffer();
buf.append(addr & 0xff).append('.').
append((addr >>>= 8) & 0xff).append('.').
append((addr >>>= 8) & 0xff).append('.').
append((addr >>>= 8) & 0xff);
return buf.toString();
}
}
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