65 lines
1.8 KiB
Java
65 lines
1.8 KiB
Java
/*
|
|
* Copyright (C) 2007 The Guava Authors
|
|
*
|
|
* 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 org.sufficientlysecure.keychain.util;
|
|
|
|
|
|
import java.io.FilterOutputStream;
|
|
import java.io.IOException;
|
|
import java.io.OutputStream;
|
|
|
|
import android.support.annotation.NonNull;
|
|
|
|
|
|
public final class CountingOutputStream extends FilterOutputStream {
|
|
|
|
private long count;
|
|
|
|
/**
|
|
* Wraps another output stream, counting the number of bytes written.
|
|
*
|
|
* @param out
|
|
* the output stream to be wrapped
|
|
*/
|
|
public CountingOutputStream(@NonNull OutputStream out) {
|
|
super(out);
|
|
}
|
|
|
|
/**
|
|
* Returns the number of bytes written.
|
|
*/
|
|
public long getCount() {
|
|
return count;
|
|
}
|
|
|
|
@Override
|
|
public void write(@NonNull byte[] b, int off, int len) throws IOException {
|
|
out.write(b, off, len);
|
|
count += len;
|
|
}
|
|
|
|
@Override
|
|
public void write(int b) throws IOException {
|
|
out.write(b);
|
|
count++;
|
|
}
|
|
|
|
// Overriding close() because FilterOutputStream's close() method pre-JDK8 has bad behavior:
|
|
// it silently ignores any exception thrown by flush(). Instead, just close the delegate stream.
|
|
// It should flush itself if necessary.
|
|
@Override
|
|
public void close() throws IOException {
|
|
out.close();
|
|
}
|
|
} |