50 lines
2.0 KiB
Java
50 lines
2.0 KiB
Java
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.util;
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import java.time.temporal.ChronoUnit;
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import java.util.concurrent.TimeUnit;
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/**
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* A {@code DataUnit} represents data sizes at a given unit of granularity and
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* provides utility methods to convert across units.
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* <p>
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* Note that both SI units (powers of 10) and IEC units (powers of 2) are
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* supported, and you'll need to pick the correct one for your use-case. For
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* example, Wikipedia defines a "kilobyte" as an SI unit of 1000 bytes, and a
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* "kibibyte" as an IEC unit of 1024 bytes.
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* <p>
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* This design is mirrored after {@link TimeUnit} and {@link ChronoUnit}.
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*
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* @hide
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*/
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@android.ravenwood.annotation.RavenwoodKeepWholeClass
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public enum DataUnit {
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KILOBYTES { @Override public long toBytes(long v) { return v * 1_000; } },
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MEGABYTES { @Override public long toBytes(long v) { return v * 1_000_000; } },
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GIGABYTES { @Override public long toBytes(long v) { return v * 1_000_000_000; } },
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TERABYTES { @Override public long toBytes(long v) { return v * 1_000_000_000_000L; } },
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KIBIBYTES { @Override public long toBytes(long v) { return v * 1_024; } },
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MEBIBYTES { @Override public long toBytes(long v) { return v * 1_048_576; } },
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GIBIBYTES { @Override public long toBytes(long v) { return v * 1_073_741_824; } },
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TEBIBYTES { @Override public long toBytes(long v) { return v * 1_099_511_627_776L; } };
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public long toBytes(long v) {
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throw new AbstractMethodError();
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}
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}
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