/*

 * Copyright (C) 2009 Google Inc. All rights reserved.

 * 

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are

 * met:

 * 

 *     * Redistributions of source code must retain the above copyright

 * notice, this list of conditions and the following disclaimer.

 *     * Redistributions in binary form must reproduce the above

 * copyright notice, this list of conditions and the following disclaimer

 * in the documentation and/or other materials provided with the

 * distribution.

 *     * Neither the name of Google Inc. nor the names of its

 * contributors may be used to endorse or promote products derived from

 * this software without specific prior written permission.

 * 

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#include "config.h"

#include "WebData.h"

#include "SharedBuffer.h"

using namespace WebCore;

namespace WebKit {

class WebDataPrivate : public SharedBuffer {

};

void WebData::reset()

{

    if (m_private) {

        m_private->deref();

        m_private = 0;

    }

}

void WebData::assign(const WebData& other)

{

    WebDataPrivate* p = const_cast<WebDataPrivate*>(other.m_private);

    if (p)

        p->ref();

    assign(p);

}

void WebData::assign(const char* data, size_t size)

{

    assign(static_cast<WebDataPrivate*>(

        SharedBuffer::create(data, size).releaseRef()));

}

size_t WebData::size() const

{

    if (!m_private)

        return 0;

    return const_cast<WebDataPrivate*>(m_private)->size();

}

const char* WebData::data() const

{

    if (!m_private)

        return 0;

    return const_cast<WebDataPrivate*>(m_private)->data();

}

WebData::WebData(const PassRefPtr<SharedBuffer>& buffer)

    : m_private(static_cast<WebDataPrivate*>(buffer.releaseRef()))

{

}

WebData& WebData::operator=(const PassRefPtr<SharedBuffer>& buffer)

{

    assign(static_cast<WebDataPrivate*>(buffer.releaseRef()));

    return *this;

}

WebData::operator PassRefPtr<SharedBuffer>() const

{

    return PassRefPtr<SharedBuffer>(const_cast<WebDataPrivate*>(m_private));

}

void WebData::assign(WebDataPrivate* p)

{

    // p is already ref'd for us by the caller

    if (m_private)

        m_private->deref();

    m_private = p;

}

} // namespace WebKit