metautil.cpp

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
 *  
 * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved. 
 *      
 * The contents of this file, and the files included with this file, are 
 * subject to the current version of the RealNetworks Public Source License 
 * Version 1.0 (the "RPSL") available at 
 * http://www.helixcommunity.org/content/rpsl unless you have licensed 
 * the file under the RealNetworks Community Source License Version 1.0 
 * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl, 
 * in which case the RCSL will apply. You may also obtain the license terms 
 * directly from RealNetworks.  You may not use this file except in 
 * compliance with the RPSL or, if you have a valid RCSL with RealNetworks 
 * applicable to this file, the RCSL.  Please see the applicable RPSL or 
 * RCSL for the rights, obligations and limitations governing use of the 
 * contents of the file.  
 *  
 * This file is part of the Helix DNA Technology. RealNetworks is the 
 * developer of the Original Code and owns the copyrights in the portions 
 * it created. 
 *  
 * This file, and the files included with this file, is distributed and made 
 * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 
 * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS 
 * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
 * 
 * Technology Compatibility Kit Test Suite(s) Location: 
 *    http://www.helixcommunity.org/content/tck 
 * 
 * Contributor(s): 
 *  
 * ***** END LICENSE BLOCK ***** */ 

#include "hlxclib/string.h"
#include "hxtypes.h"
#include "hxcom.h"
#include "ihxpckts.h"
#include "hxfiles.h"
#include "hxccf.h"

HX_RESULT CheckMetaInfoRequest(IHXRequest*            pRequest,
                               IHXCommonClassFactory* pFactory,
                               REF(BOOL)              rbAcceptMetaInfoPresent,
                               REF(BOOL)              rbAllMetaInfoRequested,
                               REF(IHXValues*)        rpRequestedMetaInfo)
{
    HX_RESULT retVal = HXR_FAIL;

    if (pRequest && pFactory)
    {
        IHXValues* pReqHdrs = NULL;
        retVal = pRequest->GetRequestHeaders(pReqHdrs);
        if (SUCCEEDED(retVal) && pReqHdrs)
        {
            IHXBuffer* pBuffer = NULL;
            pReqHdrs->GetPropertyCString("AcceptMetaInfo", pBuffer);
            if (pBuffer)
            {
                // "AcceptMetaInfo" is present
                rbAcceptMetaInfoPresent = TRUE;
                // Get the string to examine
                const char* pszStr = (const char*) pBuffer->GetBuffer();
                // Check if it's "*"
                if (!strcmp(pszStr, "*"))
                {
                    // All meta info is requested
                    rbAllMetaInfoRequested = TRUE;
                    rpRequestedMetaInfo    = NULL;
                }
                else
                {
                    // We must parse the string
                    IHXValues* pInfo = NULL;
                    // We're going to use strtok() which is
                    // destructive, so copy the string first
                    char* pszCopy = new char [strlen(pszStr) + 1];
                    if (pszCopy)
                    {
                        const char* pszSep = " \t\r\n,;";
                        char* pszTok = strtok(pszCopy, pszSep);
                        while (pszTok)
                        {
                            if (!pInfo)
                            {
                                pFactory->CreateInstance(CLSID_IHXValues,
                                                         (void**) &pInfo);
                            }
                            if (pInfo)
                            {
                                pInfo->SetPropertyULONG32(pszTok, 1);
                            }
                            pszTok = strtok(NULL, pszSep);
                        }
                    }
                    HX_VECTOR_DELETE(pszCopy);
                    // Did we get any valid parsed strings?
                    if (pInfo)
                    {
                        rbAllMetaInfoRequested = FALSE;
                        HX_RELEASE(rpRequestedMetaInfo);
                        rpRequestedMetaInfo = pInfo;
                        rpRequestedMetaInfo->AddRef();
                    }
                    else
                    {
                        // AcceptMetaInfo was present, but there
                        // weren't any valid strings in it, so we fail
                        retVal = HXR_FAIL;
                    }
                    // Release the values
                    HX_RELEASE(pInfo);
                }
            }
            else
            {
                // "AcceptMetaInfo" is not present in
                // the request headers
                rbAcceptMetaInfoPresent = FALSE;
            }
            HX_RELEASE(pBuffer);
        }
        else
        {
            // No request headers
            rbAcceptMetaInfoPresent = FALSE;
        }
        HX_RELEASE(pReqHdrs);
    }

    return retVal;
}