org.eclipse.jetty.io.ByteBufferInputStream Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995 Mort Bay Consulting Pty Ltd and others.
//
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License v. 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
// which is available at https://www.apache.org/licenses/LICENSE-2.0.
//
// SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
// ========================================================================
//
package org.eclipse.jetty.io;
import java.io.IOException;
import java.io.InputStream;
import java.nio.ByteBuffer;
/**
* Present a ByteBuffer as an InputStream.
*/
public class ByteBufferInputStream extends InputStream
{
final ByteBuffer buf;
public ByteBufferInputStream(ByteBuffer buf)
{
this.buf = buf;
}
@Override
public int available() throws IOException
{
return buf.remaining();
}
public int read() throws IOException
{
if (!buf.hasRemaining())
{
return -1;
}
return buf.get() & 0xFF;
}
public int read(byte[] bytes, int off, int len) throws IOException
{
if (!buf.hasRemaining())
{
return -1;
}
len = Math.min(len, buf.remaining());
buf.get(bytes, off, len);
return len;
}
}