pgpainless/pgpainless-core/src/main/java/org/pgpainless/decryption_verification/DecryptionStream.java

55 lines
1.6 KiB
Java

/*
* Copyright 2018 Paul Schaub.
*
* 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.pgpainless.decryption_verification;
import java.io.IOException;
import java.io.InputStream;
public class DecryptionStream extends InputStream {
private final InputStream inputStream;
private final PainlessResult.Builder resultBuilder;
private boolean isClosed = false;
DecryptionStream(InputStream wrapped, PainlessResult.Builder resultBuilder) {
if (wrapped == null) {
throw new NullPointerException("Wrapped InputStream MUST NOT be null!");
}
this.inputStream = wrapped;
this.resultBuilder = resultBuilder;
}
@Override
public int read() throws IOException {
return inputStream.read();
}
@Override
public void close() throws IOException {
inputStream.close();
this.isClosed = true;
}
public PainlessResult getResult() {
if (!isClosed) {
throw new IllegalStateException("DecryptionStream MUST be closed before the result can be accessed.");
}
return resultBuilder.build();
}
}