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/*
* Copyright (C) 2016 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.apkzlib.zip;
import com.android.apkzlib.zip.utils.CloseableByteSource;
import com.google.common.io.Closer;
import java.io.Closeable;
import java.io.IOException;
import javax.annotation.Nonnull;
/**
* Container that has two bytes sources: one representing raw data and another processed data.
* In case of compression, the raw data is the compressed data and the processed data is the
* uncompressed data. It is valid for a RaP ("Raw-and-Processed") to contain the same byte sources
* for both processed and raw data.
*/
public class ProcessedAndRawByteSources implements Closeable {
/**
* The processed byte source.
*/
@Nonnull
private final CloseableByteSource processedSource;
/**
* The processed raw source.
*/
@Nonnull
private final CloseableByteSource rawSource;
/**
* Creates a new container.
*
* @param processedSource the processed source
* @param rawSource the raw source
*/
public ProcessedAndRawByteSources(@Nonnull CloseableByteSource processedSource,
@Nonnull CloseableByteSource rawSource) {
this.processedSource = processedSource;
this.rawSource = rawSource;
}
/**
* Obtains a byte source that read the processed contents of the entry.
*
* @return a byte source
*/
@Nonnull
public CloseableByteSource getProcessedByteSource() {
return processedSource;
}
/**
* Obtains a byte source that reads the raw contents of an entry. This is the data that is
* ultimately stored in the file and, in the case of compressed files, is the same data in the
* source returned by {@link #getProcessedByteSource()}.
*
* @return a byte source
*/
@Nonnull
public CloseableByteSource getRawByteSource() {
return rawSource;
}
@Override
public void close() throws IOException {
Closer closer = Closer.create();
closer.register(processedSource);
closer.register(rawSource);
closer.close();
}
}
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