Function getXMLNodeForKey

CrossApp/support/user_default/CAUserDefaultAndroid.cpp:34–95

#ifdef KEEP_COMPATABILITY
static tinyxml2::XMLElement* getXMLNodeForKey(const char* pKey, tinyxml2::XMLDocument **doc)
{
    tinyxml2::XMLElement* curNode = NULL;
    tinyxml2::XMLElement* rootNode = NULL;
    
    if (! CAUserDefault::isXMLFileExist())
    {
        return NULL;
    }
    
    // check the key value
    if (! pKey)
    {
        return NULL;
    }
    
    do
    {
        tinyxml2::XMLDocument* xmlDoc = new tinyxml2::XMLDocument();
        *doc = xmlDoc;
        unsigned long nSize;
        const char* pXmlBuffer = (const char*)CCFileUtils::sharedFileUtils()->getFileData(CAUserDefault::sharedUserDefault()->getXMLFilePath().c_str(), "rb", &nSize);
        //const char* pXmlBuffer = (const char*)data.getBuffer();
        if(NULL == pXmlBuffer)
        {
            CCLOG("can not read xml file");
            break;
        }
        xmlDoc->Parse(pXmlBuffer);
		delete[] pXmlBuffer;
        // get root node
        rootNode = xmlDoc->RootElement();
        if (NULL == rootNode)
        {
            CCLOG("read root node error");
            break;
        }
        // find the node
        curNode = rootNode->FirstChildElement();
        if (!curNode)
        {
            // There is not xml node, delete xml file.
            remove(CAUserDefault::sharedUserDefault()->getXMLFilePath().c_str());
            
            return NULL;
        }
        
        while (NULL != curNode)
        {
            const char* nodeName = curNode->Value();
            if (!strcmp(nodeName, pKey))
            {
                // delete the node
                break;
            }
            
            curNode = curNode->NextSiblingElement();
        }