C++ UT_UTF8String::appendBuf方法代码示例

void GR_MathManager::loadEmbedData(UT_sint32 uid)
{
	SmartPtr<libxml2_MathView>  pMathView = m_vecMathView.getNthItem(uid);
	UT_return_if_fail(pMathView);

	const PP_AttrProp * pSpanAP = NULL;
	GR_AbiMathItems * pItem = m_vecItems.getNthItem(uid);
	UT_return_if_fail(pItem);  

	PT_AttrPropIndex api = pItem->m_iAPI;
	m_pDoc->getAttrProp(api, &pSpanAP);

	const char * pszDataID = NULL;
	bool bFoundDataID = pSpanAP->getAttribute("dataid", pszDataID);
	UT_DEBUGMSG(("DataID val =%s \n",pszDataID));

	UT_UTF8String sMathML;
	if (bFoundDataID && pszDataID)
	{
		const UT_ByteBuf * pByteBuf = NULL;
		bFoundDataID = m_pDoc->getDataItemDataByName(pszDataID, 
						const_cast<const UT_ByteBuf **>(&pByteBuf),
						NULL, NULL);
		UT_return_if_fail(pByteBuf && bFoundDataID);
		UT_UCS4_mbtowc myWC;
		sMathML.appendBuf( *pByteBuf, myWC);
	}

	UT_return_if_fail(bFoundDataID);
	UT_return_if_fail(pszDataID);
	UT_DEBUGMSG(("MATH ML string is... \n %s \n",sMathML.utf8_str()));
	// printf("MATH ML string is... \n %s \n",sMathML.utf8_str());
	_loadMathML(uid, sMathML);
}

bool GR_MathManager::convert(UT_uint32 iConType, UT_ByteBuf & From, UT_ByteBuf & To)
{
	XAP_App * pApp = XAP_App::getApp();
	XAP_Frame * pFrame = pApp->getLastFocussedFrame();

	if (iConType != 0)
	{
		return false;
	}

	/* add a pair of enclosing brackets \[ \] */
	UT_UTF8String sLatex;
	UT_UCS4_mbtowc myWC;
	sLatex += "\\[";
	sLatex.appendBuf(From, myWC);
	sLatex += "\\]";

	char * mathml = itex2MML_parse(sLatex.utf8_str(), sLatex.size());
	
	if (!mathml)
	{
		pFrame->showMessageBox("itex2MML failed to convert the LaTeX equation into MathML, sorry!\n", // TODO: fix message
			XAP_Dialog_MessageBox::b_O, 
			XAP_Dialog_MessageBox::a_OK);
		return false;
	}

	UT_UTF8String sMathML(mathml);
	itex2MML_free_string(mathml);

	if (sMathML.size() == 0)
	{
	  UT_UTF8String sErrMessage = "itex2MML conversion from LaTex equation resulted in zero-length MathML!\n"; // TODO: fix message
		//sErrMessage += sLatex;
		sErrMessage += "\n";
		// sErrMessage += FullLine;
		pFrame->showMessageBox(sErrMessage.utf8_str(),
				XAP_Dialog_MessageBox::b_O,
				XAP_Dialog_MessageBox::a_OK);
		return false;
	}

	UT_DEBUGMSG(("Input MathML %s \n", sMathML.utf8_str()));

	return EntityTable().convert(sMathML.utf8_str(), sMathML.size(), To);
}

void ODe_AbiDocListener::_insertMath(PT_AttrPropIndex api) {

    const gchar* szMath = NULL;
    szMath = _getObjectKey(api, static_cast<const gchar*>("dataid"));

    UT_return_if_fail(szMath);

    const UT_ByteBuf * pByteBuf = NULL;
    bool bOK = m_pDocument->getDataItemDataByName(szMath, const_cast<const UT_ByteBuf **>(&pByteBuf), NULL, NULL);

    UT_return_if_fail(bOK);

    UT_UCS4_mbtowc myWC;
    UT_UTF8String sMathML;
    sMathML.appendBuf(*pByteBuf, myWC);

    UT_return_if_fail(!sMathML.empty());

    UT_UCS4String buf = sMathML.utf8_str();
    UT_UTF8String output = "";

    const PP_AttrProp * pAP = NULL;
    bool bHaveProp = m_pDocument->getAttrProp(api,&pAP);
    UT_LocaleTransactor t(LC_NUMERIC, "C");
    UT_UTF8String dimension;
    double dInch;

    UT_return_if_fail(bHaveProp && pAP);

    _openSpan(api);

    if(pAP->getProperty("width", szMath)) {
        dInch = static_cast<double>(atoi(szMath))/UT_LAYOUT_RESOLUTION;
        UT_UTF8String_sprintf(dimension,"%fin",dInch);
        output += "<draw:frame svg:width=\"";
        output += dimension;
        output += "\" svg:height=\"";
    } else {
        UT_ASSERT_HARMLESS(UT_SHOULD_NOT_HAPPEN);
        _closeSpan();
        return;
    }

    if(pAP->getProperty("height", szMath)) {
        dInch = static_cast<double>(atoi(szMath))/UT_LAYOUT_RESOLUTION;
        dimension.clear();
        UT_UTF8String_sprintf(dimension,"%fin",dInch);
        output += dimension;
        output += "\"><draw:object>";
    } else {
        UT_ASSERT_HARMLESS(UT_SHOULD_NOT_HAPPEN);
        _closeSpan();
        return;
    }

    for (UT_uint32 i = 0; i < buf.length(); i++) {
        if (buf[i] == '<') {
            if (((i + 1) < buf.length()) && (buf[i+1] == '/')) {
                output += "</math:";
                i++; // skip the '/'
            } else if ((i + 1) < buf.length()) {
                output += "<math:";
            } else {
                UT_ASSERT_HARMLESS(UT_SHOULD_NOT_HAPPEN);
            }
        } else {
            output += buf[i];
        }
    }
    output += "</draw:object></draw:frame>";
    m_pCurrentImpl->insertText(output);
    _closeSpan();
}