/*
* *************************************************************************************
* Copyright (C) 2008 EsperTech, Inc. All rights reserved. *
* http://esper.codehaus.org *
* http://www.espertech.com *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the GPL license *
* a copy of which has been included with this distribution in the license.txt file. *
* *************************************************************************************
*/
package com.espertech.esper.support.util;
import java.io.InputStream;
public class SimpleByteArrayInputStream extends InputStream
{
protected byte[] buf = null;
protected int count = 0;
protected int pos = 0;
public SimpleByteArrayInputStream(byte[] buf, int count)
{
this.buf = buf;
this.count = count;
}
public final int available()
{
return count - pos;
}
public final int read()
{
return (pos < count) ? (buf[pos++] & 0xff) : -1;
}
public final int read(byte[] b, int off, int len)
{
if (pos >= count)
{
return -1;
}
if ((pos + len) > count)
{
len = (count - pos);
}
System.arraycopy(buf, pos, b, off, len);
pos += len;
return len;
}
public final long skip(long n)
{
if ((pos + n) > count)
{
n = count - pos;
}
if (n < 0)
{
return 0;
}
pos += n;
return n;
}
}