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// Copyright 2016 Google Inc. All rights reserved.
//
// 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.google.archivepatcher.shared;
import java.io.File;
import java.io.IOException;
/**
* An implementation of {@link MultiViewInputStreamFactory} that produces instances of
* {@link RandomAccessFileInputStream}.
*/
public class RandomAccessFileInputStreamFactory
implements MultiViewInputStreamFactory<RandomAccessFileInputStream> {
/**
* Argument for {@link RandomAccessFileInputStream#RandomAccessFileInputStream(File, long, long)}.
*/
private final File file;
/**
* Argument for {@link RandomAccessFileInputStream#RandomAccessFileInputStream(File, long, long)}.
*/
private final long rangeOffset;
/**
* Argument for {@link RandomAccessFileInputStream#RandomAccessFileInputStream(File, long, long)}.
*/
private final long rangeLength;
/**
* Constructs a new factory that will create instances of {@link RandomAccessFileInputStream} with
* the specified parameters.
* @param file the file to use in {@link #newStream()}
* @param rangeOffset the range offset to use in {@link #newStream()}
* @param rangeLength the range length to use in {@link #newStream()}
*/
public RandomAccessFileInputStreamFactory(File file, long rangeOffset, long rangeLength) {
this.file = file;
this.rangeOffset = rangeOffset;
this.rangeLength = rangeLength;
}
@Override
public RandomAccessFileInputStream newStream() throws IOException {
return new RandomAccessFileInputStream(file, rangeOffset, rangeLength);
}
}
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