/*
* Copyright (C) 2013 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.providers.downloads;
import java.io.InputStream;
/**
* Provides fake data for large transfers.
*/
public class FakeInputStream extends InputStream {
private long mRemaining;
public FakeInputStream(long length) {
mRemaining = length;
}
@Override
public int read() {
final int value;
if (mRemaining > 0) {
mRemaining--;
return 0;
} else {
return -1;
}
}
@Override
public int read(byte[] buffer, int offset, int length) {
// Arrays.checkOffsetAndCount(buffer.length, offset, length);
int arrayLength = buffer.length;
int count = length;
if ((offset | count) < 0 || offset > arrayLength || arrayLength - offset < count) {
throw new ArrayIndexOutOfBoundsException(String.format(
"ArrayIndexOutOfBoundsException : %d:%d:%d", arrayLength, offset, count));
}
if (length > mRemaining) {
length = (int) mRemaining;
}
mRemaining -= length;
if (length == 0) {
return -1;
} else {
return length;
}
}
}