pgpainless/pgpainless-core/src/main/java/org/pgpainless/decryption_verification/DecryptionBuilder.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;
import javax.annotation.Nonnull;

import org.bouncycastle.openpgp.PGPException;

public class DecryptionBuilder implements DecryptionBuilderInterface {

    private InputStream inputStream;

    @Override
    public DecryptWith onInputStream(@Nonnull InputStream inputStream) {
        this.inputStream = inputStream;
        return new DecryptWithImpl();
    }

    class DecryptWithImpl implements DecryptWith {

        @Override
        public DecryptionStream withOptions(ConsumerOptions consumerOptions) throws PGPException, IOException {
            if (consumerOptions == null) {
                throw new IllegalArgumentException("Consumer options cannot be null.");
            }

            return DecryptionStreamFactory.create(inputStream, consumerOptions);
        }
    }
}