C++ XMLElement::Attribute方法代码示例

/**
 * Reads the attributed object id, comments, and artifacts.
 */
bool Translator::ReadAttributedObject( AttributedObject& aobj, 
		Context& ctxt, const tinyxml2::XMLElement & elem, bool bIdAttributeRequired )
{
	//Grab the ID.
	pcstr szid = elem.Attribute("id");
	if( szid == NULL)
	{
		if( bIdAttributeRequired )
			throw GnssMetadata::TranslationException( "Required id attribute not defined.");
	}
	else
		aobj.Id(szid);

	//Parse the comments.
	const XMLElement* pelem = elem.FirstChildElement("comment");
	for( ;pelem != NULL; pelem = pelem->NextSiblingElement("comment"))
	{
		const char* szFmt = pelem->Attribute("format");
		Comment::CommentFormat fmt = (strcmp(szFmt, "text") == 0)
			? Comment::text : Comment::html;
		Comment comment( pelem->GetText(), fmt);
		aobj.Comments().push_back( comment);
	}

	//Parse the Artifacts.
	pelem = elem.FirstChildElement("artifact");
	for( ;pelem != NULL; pelem = pelem->NextSiblingElement("artifact"))
	{
		AnyUri auri( pelem->GetText());
		aobj.Artifacts().push_back( auri);
	}

	return true;
}

inline bool getAttribute(const tinyxml2::XMLElement& elt, const char* name,
                         std::string& value) {
    auto ptr = elt.Attribute(name);
    if(ptr) {
        value = ptr;
        return true;
    }
    return false;
}

void Fruit::Load(tinyxml2::XMLElement const& element)
{
    char const* sprite = element.Attribute("Sprite");
    assert(sprite);
    m_Sprite.Load(sprite);
    m_Sprite.SetOriginToCentre();

    m_Score = element.IntAttribute("Score");
    m_Appear1 = element.IntAttribute("Appear1");
    m_Appear2 = element.IntAttribute("Appear2");
    m_Time = element.FloatAttribute("Time");
}

	void Sprite::Read( const tinyxml2::XMLElement& el_ )
	{
		Clear();
		IAssetable::Read(el_);

		const tinyxml2::XMLElement *pElem, *pChild;

		m_AssetFileName = el_.FirstChildElement("AssetFileName")->GetText();
		//m_Name = el_->Attribute("name");
		//m_Name = el_->Attribute("id");
		SetName(el_.Attribute("id")); // TODO : ID is not the name

		m_pTexture2D = Texture::loadTexture(m_AssetFileName.c_str());

		pElem = el_.FirstChildElement("PositionInTexture");
		int x, y, w, h;
		pElem->QueryIntAttribute("x", &x);
		pElem->QueryIntAttribute("y", &y);
		pElem->QueryIntAttribute("width", &w);
		pElem->QueryIntAttribute("height", &h);
		m_PositionInTexture.Set(x, y, w, h);

		pElem = el_.FirstChildElement("HotSpot");
		pElem->QueryIntAttribute("x", &m_Origin.x);
		pElem->QueryIntAttribute("y", &m_Origin.y);

		pElem = el_.FirstChildElement("CollisionList");
		pChild = pElem->FirstChildElement("Shape");

		while (pChild != nullptr)
		{
			IShape *pShape = IShape::LoadShape(*pChild);
			m_CollisionShapes.push_back(pShape);
			pChild = pChild->NextSiblingElement();
		}
	}

/** sample ParaEngine mesh xml file
<mesh version=1 type=0>
	<boundingbox minx=0 miny=0 minz=0 maxx=1 maxy=1 maxz=1/>
	<shader index=3/>
	<submesh loddist=10 filename="LOD_10.x"/>
	<submesh loddist=50 filename="LOD_50.x"/>
</mesh>
*/
bool ParaEngine::CParaMeshXMLFile::LoadFromBuffer(const char* pData, int nSize)
{
#ifdef PARAENGINE_MOBILE
    namespace TXML = tinyxml2;
    try
    {
        TXML::XMLDocument doc(true, TXML::COLLAPSE_WHITESPACE);
        doc.Parse(pData, nSize);
        TXML::XMLElement* pRoot = doc.RootElement();
        if (pRoot)
        {
            pRoot->QueryIntAttribute("version", &m_nVersion);
            if (m_nVersion < SUPPORTED_MESH_FILE_VERSION)
            {
                OUTPUT_LOG("can not load para mesh xml file. because of a lower file version.\n");
            }
            int nType = 0;
            pRoot->QueryIntAttribute("type", &nType);
            m_nType = (ParaMeshXMLType)nType;

            for (TXML::XMLNode* pChild = pRoot->FirstChild(); pChild != 0; pChild = pChild->NextSibling())
            {
                TXML::XMLElement* pElement = pChild->ToElement();
                if (pElement)
                {
                    std::string tagName = pElement->Name();
                    if (tagName == "boundingbox")
                    {
                        pElement->QueryFloatAttribute("minx", &m_vMinPos.x);
                        pElement->QueryFloatAttribute("miny", &m_vMinPos.y);
                        pElement->QueryFloatAttribute("minz", &m_vMinPos.z);
                        pElement->QueryFloatAttribute("maxx", &m_vMaxPos.x);
                        pElement->QueryFloatAttribute("maxy", &m_vMaxPos.y);
                        pElement->QueryFloatAttribute("maxz", &m_vMaxPos.z);
                    }
                    else if (tagName == "shader")
                    {
                        pElement->QueryIntAttribute("index", &m_nPrimaryShader);
                        // TODO: for shader parameters
                        for (TXML::XMLNode* pSubChild = pElement->FirstChild(); pSubChild != 0; pSubChild = pSubChild->NextSibling())
                        {
                            TXML::XMLElement* pParamElement = pSubChild->ToElement();
                            if (pParamElement)
                            {
                                std::string tagName = pParamElement->Name();
                                if (tagName == "params")
                                {
                                    CParameter p;
                                    // param name
                                    p.SetName(pParamElement->Attribute("name", ""));
                                    p.SetTypeByString(pParamElement->Attribute("type", ""));
                                    p.SetValueByString(pParamElement->GetText());
                                    m_paramBlock.AddParameter(p);
                                }
                            }
                        }
                    }
                    else if (tagName == "submesh")
                    {
                        CSubMesh meshInfo;
                        pElement->QueryFloatAttribute("loddist", &meshInfo.m_fToCameraDist);
                        std::string filepath = pElement->Attribute("filename");
                        // check if it is relative path or absolute path
                        if (filepath.find('/') != string::npos || filepath.find('\\') != string::npos)
                            meshInfo.m_sFileName = filepath;
                        else
                            meshInfo.m_sFileName = m_sParentDirectory + filepath;
                        m_SubMeshes.push_back(meshInfo);
                    }
                }
            }
        }
    }
    catch (...)
    {
        OUTPUT_LOG("error parsing xml file %s**.xml \n", m_sParentDirectory.c_str());
        return false;
    }
    return m_SubMeshes.size() > 0;
#else
    TiXmlDocument doc;
    try
    {
        doc.Parse(pData, 0, TIXML_DEFAULT_ENCODING);
        TiXmlElement* pRoot =  doc.RootElement();
        {
            // get mesh file version
            TinyXPath::xpath_processor xpathProc(pRoot, "/mesh/@version");
            TinyXPath::expression_result res = xpathProc.er_compute_xpath();
            TinyXPath::node_set* pNodeSet = res.nsp_get_node_set();
            if(pNodeSet!=0 && pNodeSet->u_get_nb_node_in_set()>0)
            {
//.........这里部分代码省略.........