/*

 * Copyright (C) 2007 Apple 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:

 * 1. Redistributions of source code must retain the above copyright

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

 * 2. 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.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 "HTTPHeaderPropertyBag.h"

#include "HTTPHeaderMap.h"

#include <WebCore/BString.h>

// HTTPHeaderPropertyBag -----------------------------------------------

HTTPHeaderPropertyBag::HTTPHeaderPropertyBag(WebURLResponse* response)

    : m_refCount(1)

    , m_response(response)

{

}

HTTPHeaderPropertyBag* HTTPHeaderPropertyBag::createInstance(WebURLResponse* response)

{

    return new HTTPHeaderPropertyBag(response);

}

// IUnknown -------------------------------------------------------------------

HRESULT STDMETHODCALLTYPE HTTPHeaderPropertyBag::QueryInterface(REFIID riid, void** ppvObject)

{

    *ppvObject = 0;

    if (IsEqualGUID(riid, IID_IUnknown))

        *ppvObject = static_cast<IPropertyBag*>(this);

    else if (IsEqualGUID(riid, IID_IPropertyBag))

        *ppvObject = static_cast<IPropertyBag*>(this);

    else if (IsEqualGUID(riid, __uuidof(HTTPHeaderPropertyBag)))

        *ppvObject = this;

    else

        return E_NOINTERFACE;

    AddRef();

    return S_OK;

}

ULONG STDMETHODCALLTYPE HTTPHeaderPropertyBag::AddRef(void)

{

    return ++m_refCount;

}

ULONG STDMETHODCALLTYPE HTTPHeaderPropertyBag::Release(void)

{

    ULONG newRef = --m_refCount;

    if (!newRef)

        delete this;

    return newRef;

}

static inline WebCore::String ConvertFromLPCOLESTRToString(LPCOLESTR pszPropName)

{

    return WebCore::String(pszPropName);

}

static bool ConvertFromStringToVariant(VARIANT* pVar, const WebCore::String& stringVal)

{

    if (!pVar)

        return false;

    if (V_VT(pVar) == VT_BSTR) {

        V_BSTR(pVar) = WebCore::BString(stringVal);

        return true;

    }

    return false;

}

// IPropertyBag ------------------------------------------------------------

HRESULT STDMETHODCALLTYPE HTTPHeaderPropertyBag::Read(LPCOLESTR pszPropName, VARIANT* pVar, IErrorLog* /*pErrorLog*/)

{

    if (!pszPropName)

        return E_POINTER;

    if (!m_response)

        return E_FAIL;

    const WebCore::HTTPHeaderMap& headerMap = m_response->resourceResponse().httpHeaderFields();

    WebCore::String key = ConvertFromLPCOLESTRToString(pszPropName);

    WebCore::String value = headerMap.get(key);

    if (!ConvertFromStringToVariant(pVar, value))

        return E_INVALIDARG;

    return S_OK;

}

HRESULT STDMETHODCALLTYPE HTTPHeaderPropertyBag::Write(LPCOLESTR /*pszPropName*/, VARIANT* /*pVar*/)

{

    // We cannot add to the Resource Response's header hash map

    return E_FAIL;

}