smlparse.cpp

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

	const char* pName = 0;
	IHXBuffer* pBuf = 0;

	HX_RESULT rc = pNode->m_pValues->GetFirstPropertyCString(pName, pBuf);
	while(HXR_OK == rc)
	{
	    if(strcmp(pName, "name") == 0)
	    {
		pMeta->m_name = (const char*)pBuf->GetBuffer();
	    }
	    else if(strcmp(pName, "content") == 0)
	    {
		pMeta->m_content = (const char*)pBuf->GetBuffer();
	    }
	    HX_RELEASE(pBuf);
	    rc = pNode->m_pValues->GetNextPropertyCString(pName, pBuf);
	}
	HX_RELEASE(pBuf);

	// check for 'base'
	if(pMeta->m_name == "base")
	{
	    HX_DELETE(m_pBasePath);
	    m_pBasePath = new_string((const char*)pMeta->m_content);
	    HX_RELEASE(pBuf);
	}
    }
    return pMeta;
}

CSmil1RendererPreFetch*
CSmil1Parser::makeRendererPreFetch(SMIL1Node* pNode)
{
    CSmil1RendererPreFetch* pRenderer = 
	new CSmil1RendererPreFetch(pNode);
    if(pNode->m_pValues)
    {
	const char* pName = 0;
	IHXBuffer* pBuf = 0;
	HX_RESULT rc = pNode->m_pValues->GetFirstPropertyCString(pName, pBuf);
	while(HXR_OK == rc)
	{
	    if(strcmp(pName, "type") == 0)
	    {
		pRenderer->m_mimeType = (const char*)pBuf->GetBuffer();
	    }
	    rc = pNode->m_pValues->GetNextPropertyCString(pName, pBuf);
	}
    }
    return pRenderer;
}

CSmil1RootLayout*
CSmil1Parser::makeRootLayout(SMIL1Node* pNode)
{
    BOOL bHasHeight = FALSE;
    BOOL bHasWidth = FALSE;

    //[SMIL 1.0 compliance] Fixes PR 22674.  SMIL 1.0 documentation states:
    //  "If a document contains more than one "root-layout" element,
    //   this is an error, and the document should not be displayed."
    if (m_bSMILRootLayoutAlreadyFound  &&  m_bSMIL10FullCompliance)
    {
	CSmil1SMILSyntaxErrorHandler errHandler(m_pContext);
	errHandler.ReportError(SMILErrorUnexpectedTag,
		(const char*)pNode->m_name, pNode->m_ulTagStartLine);
	return NULL;
    }
    else if (m_bStoreErrors && m_bSMILRootLayoutAlreadyFound)
    {
	storeError(SMILErrorUnexpectedTag, pNode->m_name, 0, 
		pNode->m_ulTagStartLine, 0, FALSE);
    }


    m_bSMILRootLayoutAlreadyFound = TRUE;

    CSmil1RootLayout* pLayout = new CSmil1RootLayout(pNode);
    if(pNode->m_pValues)
    {
	const char* pName = 0;
	IHXBuffer* pBuf = 0;
	HX_RESULT rc = pNode->m_pValues->GetFirstPropertyCString(pName, pBuf);
	while(HXR_OK == rc)
	{
	    //[SMIL 1.0 compliance] Fixes PR 24628.  SMIL 1.0
	    // documentation states in section 3.3.1 that only "length"
	    // values are allowed in a root-layout height or width;
	    // percentages are not allowed:
	    // [SMIL 1.0 compliance] Also fixes PR 25694: don't allow
	    // ANYTHING other than numeric values with 'px' allowed as
	    // the only valid units string:
	    if (m_bSMIL10FullCompliance)
	    {
		if(!strcmp(pName, "height")  ||  !strcmp(pName, "width"))
		{
		    const char* pTmp = (const char*)pBuf->GetBuffer();
		    UINT32 ulBuflen = pBuf->GetSize();
		    UINT32 ulCounter = 0L;
		    BOOL bNumCharFound = FALSE;
		    BOOL bPxFoundAlready = FALSE;
		    while (pTmp  &&  *pTmp)
		    {
			//The SMIL 1.0 spec says to use a "length" value as
			// defined in the CSS2 spec, except that the "px"
			// units are optional.  The CSS2 spec can be found
			// here:
			//  http://www.w3.org/TR/REC-CSS2/syndata.html
			// with the specific definition found here in that
			// page:
			//    .../syndata.html#value-def-length
			// Look for: "[+|-](#*)[.][(#*)][px]"
			if (bPxFoundAlready  ||  
				( ('0' > *pTmp  ||  '9' < *pTmp)  &&
				'.' != *pTmp  &&
				(bNumCharFound  ||  ('-' != *pTmp  &&
				'+' != *pTmp)) ) )
			{
			    //If at least one number was found already
			    // and "px" follows, then this char (*pTmp)
			    // is not illegal here:
			    if (!bPxFoundAlready  &&
				    bNumCharFound  &&
				    'p' == *pTmp  &&
				    ulCounter < ulBuflen-1  &&
				    'x' == *(pTmp+1) )
			    {
				//the first "px" following a number is ok;
				bPxFoundAlready = TRUE;
				++pTmp; //jump past the 'x'.
			    }
			    else
			    {
				CSmil1SMILSyntaxErrorHandler errHandler(
				        m_pContext);
				errHandler.ReportError(SMILErrorBadAttribute,
				        (const char*)pBuf->GetBuffer(),
					pNode->m_ulTagStartLine);
				return NULL;
			    }
			}
			else if ('.' == *pTmp  ||  '-' == *pTmp  ||
				'+' == *pTmp)
			{
			    //Valid chars at start, so keep going.
			}
			else
			{
			    bNumCharFound = TRUE;
			}
			++pTmp;
			++ulCounter;
		    }
		}
	    }
	    if(strcmp(pName, "height") == 0)
	    {
		pLayout->m_ulHeight = atol((const char*)pBuf->GetBuffer());
		bHasHeight = TRUE;
	    }
	    else if(strcmp(pName, "width") == 0)
	    {
		pLayout->m_ulWidth = atol((const char*)pBuf->GetBuffer());
		bHasWidth = TRUE;
	    }
	    else if(strcmp(pName, "background-color") == 0)
	    {
                UINT32    ulColor = 0;
                HX_RESULT rv = HXParseColorUINT32((const char*) pBuf->GetBuffer(),
                                                  ulColor);
                if (SUCCEEDED(rv))
                {
                    pLayout->m_ulBgColor = ulColor;
                }
	    }
	    else if(strcmp(pName, "overflow") == 0)
	    {
		pLayout->m_overflow = (const char*)pBuf->GetBuffer();
	    }
	    else if(strcmp(pName, "title") == 0)
	    {
		pLayout->m_title = (const char*)pBuf->GetBuffer();
	    }
	    else if((strcmp(pName, "id") == 0) ||
		    (strcmp(pName, "skip-content") == 0))
	    {
		// dont' do anything with these attributes
	    }
	    
	    HX_RELEASE(pBuf);
	    rc = pNode->m_pValues->GetNextPropertyCString(pName, pBuf);
	}
    }

    //[SMIL 1.0 Compliance]: PR 24630:
    // height and width are not required in root layout, per the 1.0 spec:
    pLayout->m_bHeightUnspecified = !bHasHeight;
    pLayout->m_bWidthUnspecified = !bHasWidth;

    return pLayout;
}

CSmil1Region*
CSmil1Parser::makeRegion(SMIL1Node* pNode)
{
    CSmil1Region* pRegion = new CSmil1Region(pNode);

    if(pNode->m_pValues)
    {
	const char* pName = 0;
	IHXBuffer* pBuf = 0;
	HX_RESULT rc = pNode->m_pValues->GetFirstPropertyCString(pName, pBuf);
	while(HXR_OK == rc)
	{
	    //[SMIL 1.0 compliance] Fixes PR 25697.  SMIL 1.0
	    // documentation states in section 3.3.1 that only percentage and
	    // "length" values are allowed in a root-layout height or width;
	    if (m_bSMIL10FullCompliance)
	    {
		if(!strcmp(pName, "height")  ||  !strcmp(pName, "width")  ||
			!strcmp(pName, "top")  ||  !strcmp(pName, "left"))
		{
		    const char* pTmp = (const char*)pBuf->GetBuffer();
		    UINT32 ulBuflen = pBuf->GetSize();
		    UINT32 ulCounter = 0L;
		    BOOL bNumCharFound = FALSE;
		    BOOL bPxOrPercentFoundAlready = FALSE;
		    while (pTmp  &&  *pTmp)
		    {
			//The SMIL 1.0 spec says to use a percentage value
			// or a "length" value as defined in the CSS2 spec,
			// except that the "px" units are the only ones
			// allowed and are optional.
			// The CSS2 spec can be found here:
			//  http://www.w3.org/TR/REC-CSS2/syndata.html
			// with the specific definition found here in that
			// page:
			//    .../syndata.html#value-def-length
			// Look for: "[+|-](#*)[.][(#*)][px|%]"
			if (bPxOrPercentFoundAlready  ||
				( ('0' > *pTmp  ||  '9' < *pTmp)  &&
				'.' != *pTmp  &&
				(bNumCharFound  ||  ('-' != *pTmp  &&
				'+' != *pTmp)) ) )
			{
			    //If at least one number was found already
			    // and "px" or "%" follows, then this char
			    // (*pTmp) is not illegal here:
			    if (!bPxOrPercentFoundAlready  &&
				    bNumCharFound  &&
				    ( '%' == *pTmp  ||
				    ('p' == *pTmp  &&
				    ulCounter < ulBuflen-1  &&
				    'x' == *(pTmp+1))) )
			    {
				//The first "px" or "%" following a number
				// is ok;
				bPxOrPercentFoundAlready = TRUE;
				if ('p' == *pTmp)
				{
				    ++pTmp; //jump past the 'x'.
				}
			    }
			    else
			    {
				CSmil1SMILSyntaxErrorHandler errHandler(
				        m_pContext);
				errHandler.ReportError(SMILErrorBadAttribute,
				        (const char*)pBuf->GetBuffer(),
					pNode->m_ulTagStartLine);
				return NULL;
			    }
			}
			else if ('.' == *pTmp  ||  '-' == *pTmp  ||
				'+' == *pTmp)
			{
			    //Valid chars at start, so keep going.
			}
			else
			{
			    bNumCharFound = TRUE;
			}
			++pTmp;
			++ulCounter;
		    }
		}
	    }
	    if(strcmp(pName, "left") == 0)
	    {
		pRegion->m_left = (const char*)pBuf->GetBuffer();
	    }
	    else if(strcmp(pName, "top") == 0)
	    {
		pRegion->m_top = (const char*)pBuf->GetBuffer();
	    }
	    else if(strcmp(pName, "height") == 0)
	    {
		pRegion->m_height = (const char*)pBuf->GetBuffer();
	    }
	    else if(strcmp(pName, "width") == 0)
	    {
		pRegion->m_width = (const char*)pBuf->GetBuffer();
	    }
	    else if(strcmp(pName, "fit") == 0)
	    {
		pRegion->m_fit = (const char*)pBuf->GetBuffer();
	    }
	    else if(strcmp(pName, "z-index") == 0)
	    {
		pRegion->m_zIndex = atol((const char*)pBuf->GetBuffer());
	    }
	    else if(strcmp(pName, "background-color") == 0)
	    {
		const char* pActualColor = (const char*)pBuf->GetBuffer();
		if(strcmp(pActualColor, "transparent") == 0)
		{
		    pRegion->m_bBgColorSet = FALSE;
		}
		else
		{
                    UINT32 ulColor = 0;
                    HX_RESULT rv = HXParseColorUINT32((const char*) pBuf->GetBuffer(),
                                                      ulColor);
                    if (SUCCEEDED(rv))
                    {
                        pRegion->m_ulBgColor   = ulColor;
                        pRegion->m_bBgColorSet = TRUE;
                    }
		}
	    }
	    
	    pBuf->Release();
	    rc = pNode->m_pValues->GetNextPropertyCString(pName, pBuf);
	}
    }
    return pRegion;
}

CSmil1AAnchorElement*
CSmil1Parser::makeAAnchorElement(SMIL1Node* pNode)
{
    CSmil1AAnchorElement* pAnchor = 
	new CSmil1AAnchorElement(pNode);
    if(pNode->m_pValues)
    {
	const char* pName = 0;
	IHXBuffer* pBuf = 0;
	HX_RESULT rc = pNode->m_pValues->GetFirstPropertyCString(pName, pBuf);
	while(HXR_OK == rc)
	{
	    if(strcmp(pName, "href") == 0)
	    {
		pAnchor->m_href = (const char*)pBuf->GetBuffer();
	    }
	    else if(strcmp(pName, "show") == 0)
	    {
		pAnchor->m_show = (const char*)pBuf->GetBuffer();
	    }

	    pBuf->Release();
	    rc = pNode->m_pValues->GetNextPropertyCString(pName, pBuf);
	}
    }
    return pAnchor;
}

CSmil1AnchorElement*
CSmil1Parser::makeAnchorElement(SMIL1Node* pNode)
{
    CSmil1AnchorElement* pAnchor = new CSmil1AnchorElement(pNode);
    if(pNode->m_pValues)
    {
	const char* pName = 0;
	IHXBuffer* pBuf = 0;
	HX_RESULT rc = pNode->m_pValues->GetFirstPropertyCString(pName, pBuf);
	while(HXR_OK == rc)
	{
	    if(strcmp(pName, "href") == 0)
	    {
		pAnchor->m_href = (const char*)pBuf->GetBuffer();
	    }
	    else if(strcmp(pName, "show") == 0)
	    {
		pAnchor->m_show = (const char*)pBuf->GetBuffer();
	    }
	    else if(strcmp(pName, "coords") == 0)
	    {
		rc = parseAnchorCoords((const char*)pBuf->GetBuffer(),
		    pAnchor);
	    }
	    else if(strcmp(pName, "fragment-id") == 0)
	    {
		pAnchor->m_fragmentID = (const char*)pBuf->GetBuffer();
	    }
	    else if(strcmp(pName, "z-index") == 0)
	    {
		pAnchor->m_zIndex = atol((const char*)pBuf->GetBuffer());
	    }
	    else if(strcmp(pName, "begin") == 0)
	    {
		rc = parseDuration((const char*)pBuf->GetBuffer(), pAnchor, 
		    SMILSyncAttrBegin);
		if(HXR_OK == rc)
		{
		    pAnchor->m_bTimeValueSet = TRUE;
		}
	    }
	    else if(strcmp(pName, "end") == 0)
	    {
		rc = parseDuration((const char*)pBuf->GetBuffer(), pAnchor,
		    SMILSyncAttrEnd);
		if(HXR_OK == rc)
		{
		    pAnchor->m_bTimeValueSet = TRUE;
		}
	    }

	    pBuf->Release();
	    rc = pNode->m_pValues->GetNextPropertyCString(pName, pBuf);
	}
    }
    return pAnchor;
}

CSmil1Source*
CSmil1Parser::makeSource(SMIL1Node* pNode)
{
    HX_RESULT rc = HXR_OK;
    CSmil1Source* pSource = new CSmil1Source(pNode);

    // assign to a group
    if(pNode->m_nGroup == (UINT16)-1)
    {
	SMIL1Node* pParent = pNode->m_pParent;
	while(pParent)
	{
	    if(pParent->m_nGroup != (UINT16)-1)
	    {
		pNode->m_nGroup = pParent->m_nGroup;
		break;
	    }
	    pParent = pParent->m_pParent;
	}
    }

    if(pNode->m_pValues)
    {
	const char* pName = 0;
	IHXBuffer* pBuf = 0;
	rc = pNode->m_pValues->GetFirstPropertyCString(pName, pBuf);
	while(HXR_OK == rc)
	{
	    if(strcmp(pName, "src") == 0)
	    {
		CHXString src = (const char*)pBuf->GetBuffer();
		
		// trim leading/trailing spaces
		src.TrimRight();
		src.TrimLeft();

		if(m_pBasePath &&
		    isRelativeURL(src))
		{
		    pSource->m_src = CHXString(m_pBasePath) + src;
		}
		else
		{
		    pSource->m_src = src;
		}
	    }
	    else if(strcmp(pName, "region") == 0)
	    {
		//char szPersistentComponentID[MAX_DISPLAY_NAME] = {0};
		//itoa(m_ulPersistentComponentID, szPersistentComponentID, 10);
   
		// append persistent ID to the end of region id
		// to make it unique in nested meta
		pSource->m_region = (const char*)pBuf->GetBuffer();
		//pSource->m_region += "_";
		//pSource->m_region += szPersistentComponentID;
	    }
	    else if(strcmp(pName, "begin") == 0)
	    {
		rc = parseDuration((const char*)pBuf->GetBuffer(), pSource, 
		    SMILSyncAttrBegin);
	    }
	    else if(strcmp(pName, "end") == 0)
	    {
		rc = parseDuration((const char*)pBuf->GetBuffer(), pSource,
		    SMILSyncAttrEnd);
	    }
	    else if(strcmp(pName, "clip-begin") == 0)
	    {
		rc = parseDuration((const char*)pBuf->GetBuffer(), pSource,
		    SMILSyncAttrClipBegin);
	    }
	    else if(strcmp(pName, "clip-end") == 0)
	    {
		rc = parseDuration((const char*)pBuf->GetBuffer(), pSource,
		    SMILSyncAttrClipEnd);
	    }
	    else if(strcmp(pName, "dur") == 0)
	    {
		rc = parseDuration((const char*)pBuf->GetBuffer(), pSource,
		    SMILSyncAttrDur);
	    }
	    else if(strcmp(pName, "fill") == 0)
	    {
		pSource->m_fill = (const char*)pBuf->GetBuffer();
	    }
	    else if(strcmp(pName, "title") == 0)
	    {
		pSource->m_title = (const char*)pBuf->GetBuffer();