/*
* 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.harmony.xnet.provider.jsse;
import java.io.IOException;
import java.nio.ByteBuffer;
/**
* This is a wrapper input stream for ByteBuffer data source.
* Among with the read functionality it provides info
* about number of cunsumed bytes from the source ByteBuffer.
* The source ByteBuffer object can be reseted.
* So one instance of this wrapper can be reused for several
* ByteBuffer data sources.
*/
public class SSLBufferedInput extends SSLInputStream {
private ByteBuffer in;
private int bytik;
private int consumed = 0;
/**
* Constructor
*/
protected SSLBufferedInput() {}
/**
* Sets the buffer as a data source
*/
protected void setSourceBuffer(ByteBuffer in) {
consumed = 0;
this.in = in;
}
@Override
public int available() throws IOException {
// in assumption that the buffer has been set
return in.remaining();
}
/**
* Returns the number of consumed bytes.
*/
protected int consumed() {
return consumed;
}
/**
* Reads the following byte value. If there are no bytes in the source
* buffer, method throws java.nio.BufferUnderflowException.
*/
@Override
public int read() throws IOException {
// TODO: implement optimized read(int)
// and read(byte[], int, int) methods
bytik = in.get() & 0x00FF;
consumed ++;
return bytik;
}
}