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/*
* ByteArrayResponseBodyReader.java
* Copyright (C) 2004 The Free Software Foundation
*
* This file is part of GNU inetlib, a library.
*
* GNU inetlib is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GNU inetlib is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Linking this library statically or dynamically with other modules is
* making a combined work based on this library. Thus, the terms and
* conditions of the GNU General Public License cover the whole
* combination.
*
* As a special exception, the copyright holders of this library give you
* permission to link this library with independent modules to produce an
* executable, regardless of the license terms of these independent
* modules, and to copy and distribute the resulting executable under
* terms of your choice, provided that you also meet, for each linked
* independent module, the terms and conditions of the license of that
* module. An independent module is a module which is not derived from
* or based on this library. If you modify this library, you may extend
* this exception to your version of the library, but you are not
* obliged to do so. If you do not wish to do so, delete this
* exception statement from your version.
*/
package gnu.inet.http;
/**
* Simple response body reader that stores content in a byte array.
*
* @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
*/
public class ByteArrayResponseBodyReader
implements ResponseBodyReader
{
/**
* The content.
*/
protected byte[] content;
/**
* The position in the content at which the next write will occur.
*/
protected int pos;
/**
* The length of the buffer.
*/
protected int len;
/**
* Constructs a new byte array response body reader.
*/
public ByteArrayResponseBodyReader()
{
this(4096);
}
/**
* Constructs a new byte array response body reader with the specified
* initial buffer size.
* @param size the initial buffer size
*/
public ByteArrayResponseBodyReader(int size)
{
content = new byte[size];
pos = len = 0;
}
/**
* This reader accepts all responses.
*/
public boolean accept(Request request, Response response)
{
return true;
}
public void read(byte[] buffer, int offset, int length)
{
int l = length - offset;
if (pos + l > content.length)
{
byte[] tmp = new byte[content.length * 2];
System.arraycopy(content, 0, tmp, 0, pos);
content = tmp;
}
System.arraycopy(buffer, offset, content, pos, l);
pos += l;
len = pos;
}
public void close()
{
pos = 0;
}
/**
* Retrieves the content of this reader as a byte array.
* The size of the returned array is the number of bytes read.
*/
public byte[] toByteArray()
{
byte[] ret = new byte[len];
System.arraycopy(content, 0, ret, 0, len);
return ret;
}
}
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