| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.kerby.asn1.util; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| |
| /** |
| * ASN1 reader for stateful reading. |
| */ |
| public final class Asn1Reader1 extends Asn1Reader { |
| |
| public Asn1Reader1(ByteBuffer buffer) { |
| super(buffer); |
| } |
| |
| @Override |
| public void setPosition(int position) { |
| buffer.position(position); |
| } |
| |
| @Override |
| public int getPosition() { |
| return buffer.position(); |
| } |
| |
| @Override |
| public boolean available() { |
| return buffer.remaining() > 0; |
| } |
| |
| @Override |
| protected byte readByte() throws IOException { |
| return buffer.get(); |
| } |
| |
| @Override |
| public ByteBuffer getValueBuffer(int valueLength) { |
| ByteBuffer result = buffer.duplicate(); |
| result.limit(buffer.position() + valueLength); |
| buffer.position(buffer.position() + valueLength); |
| |
| return result; |
| } |
| } |