DecryptionStream.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 javax.annotation.Nonnull;
import java.io.IOException;
import java.io.InputStream;
public class DecryptionStream extends InputStream {
private final InputStream inputStream;
private final OpenPgpMetadata.Builder resultBuilder;
private boolean isClosed = false;
DecryptionStream(@Nonnull InputStream wrapped, @Nonnull OpenPgpMetadata.Builder resultBuilder) {
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 OpenPgpMetadata getResult() {
if (!isClosed) {
throw new IllegalStateException("DecryptionStream MUST be closed before the result can be accessed.");
}
return resultBuilder.build();
}
}