/* -*-	Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */

/*

 * Copyright (c) 2005,2006 INRIA

 * All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation;

 *

 * This program 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 program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>

 */

#include "packet.h"

#include <cassert>

Packet::Packet ()

	: m_buffer () {}

Packet::Packet (uint32_t size)

	: m_buffer (size)

{}

Packet::Packet (Buffer buffer, Tags tags)

	: m_buffer (buffer),

	  m_tags (tags)

{}

Packet 

Packet::create_fragment (uint32_t start, uint32_t length) const

{

	Buffer tmp = m_buffer.create_fragment (start, length);

	return Packet (tmp, m_tags);

}

uint32_t 

Packet::get_size (void) const

{

	return m_buffer.get_size ();

}

void 

Packet::add (Chunk *chunk)

{

	chunk->add (&m_buffer);

}

void 

Packet::peek (Chunk *chunk) const

{

	chunk->peek (&m_buffer);

}

void 

Packet::remove (Chunk *chunk)

{

	chunk->remove (&m_buffer);

}

void 

Packet::write (PacketReadWriteCallback callback) const

{

	uint8_t *data = m_buffer.peek_data ();

	uint32_t to_write = get_size ();

	callback (data, to_write);

}

void 

Packet::add_at_end (Packet packet)

{

	Buffer src = packet.m_buffer;

	m_buffer.add_at_end (src.get_size ());

	Buffer::Iterator dest_start = m_buffer.end ();

	dest_start.prev (src.get_size ());

	dest_start.write (src.begin (), src.end ());

	/**

	 * XXX: we might need to merge the tag list of the

	 * other packet into the current packet.

	 */

}

void 

Packet::add_at_end (Packet packet, uint32_t start, uint32_t size)

{

	assert (packet.get_size () <= start + size);

	Buffer src = packet.m_buffer;

	m_buffer.add_at_end (src.get_size ());

	Buffer::Iterator dest_start = m_buffer.end ();

	dest_start.prev (size);

	Buffer::Iterator src_start = src.begin ();

	src_start.next (start);

	Buffer::Iterator src_end = src_start;

	src_end.next (size);

	dest_start.write (src_start, src_end);

	/**

	 * XXX: we might need to merge the tag list of the

	 * other packet into the current packet.

	 */

}

void 

Packet::remove_at_end (uint32_t size)

{

	m_buffer.remove_at_end (size);

}

void 

Packet::remove_at_start (uint32_t size)

{

	m_buffer.remove_at_start (size);

}

void 

Packet::remove_all_tags (void)

{

	m_tags.remove_all ();

}