/*
 * Copyright (C) 2007 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.util;

import java.time.temporal.ChronoUnit;
import java.util.concurrent.TimeUnit;

A DataUnit represents data sizes at a given unit of granularity and provides utility methods to convert across units. 

Note that both SI units (powers of 10) and IEC units (powers of 2) are
supported, and you'll need to pick the correct one for your use-case. For
example, Wikipedia defines a "kilobyte" as an SI unit of 1000 bytes, and a
"kibibyte" as an IEC unit of 1024 bytes.
 This design is mirrored after TimeUnit and ChronoUnit. 
@hide
/**
 * A {@code DataUnit} represents data sizes at a given unit of granularity and
 * provides utility methods to convert across units.
 * <p>
 * Note that both SI units (powers of 10) and IEC units (powers of 2) are
 * supported, and you'll need to pick the correct one for your use-case. For
 * example, Wikipedia defines a "kilobyte" as an SI unit of 1000 bytes, and a
 * "kibibyte" as an IEC unit of 1024 bytes.
 * <p>
 * This design is mirrored after {@link TimeUnit} and {@link ChronoUnit}.
 *
 * @hide
 */
public enum DataUnit {
    KILOBYTES { @Override public long toBytes(long v) { return v * 1_000; } },
    MEGABYTES { @Override public long toBytes(long v) { return v * 1_000_000; } },
    GIGABYTES { @Override public long toBytes(long v) { return v * 1_000_000_000; } },
    KIBIBYTES { @Override public long toBytes(long v) { return v * 1_024; } },
    MEBIBYTES { @Override public long toBytes(long v) { return v * 1_048_576; } },
    GIBIBYTES { @Override public long toBytes(long v) { return v * 1_073_741_824; } };

    public long toBytes(long v) {
        throw new AbstractMethodError();
    }
}