CSV用C++拆分数据（CSV必须是UTF-8）

std::string strTmp;
std::string subStrTmp;
std::string str;
int    pos = 0;
int    subPos1 = 0;
int    subPos2 = 0;

Data fileData = FileUtils::getInstance()->getDataFromFile( FileUtils::getInstance()->fullPathForFilename( "data/SelectCard.csv" ) );
str.clear();
str.assign( (const char *)fileData.getBytes(), fileData.getSize() );

/* string 拆解
for( int i = 0; i < data.getSize(); i++ ) {
pos = str.find( "\n", i );
strTmp = str.substr( i, pos - i );
i = pos;
}
*/
for( unsigned int i = 0; i < str.size(); i++ ) {
    pos = str.find( "\n", i );
    strTmp = str.substr( i, pos - i );
    // 拆数据，第一行不要
    if( i != 0 ) {
        selectCardData_s *data = new selectCardData_s;
        subPos1 = 0;
        //
        subPos2 = strTmp.find( ",", subPos1 );
        subStrTmp = strTmp.substr( subPos1, subPos2 - subPos1 );
        data->id = atoi( subStrTmp.c_str() );
        subPos1 = subPos2 + 1;    // 需要自加，跳过分割符号
        //
        subPos2 = strTmp.find( ",", subPos1 );
        subStrTmp = strTmp.substr( subPos1, subPos2 - subPos1 );
        data->cardType = atoi( subStrTmp.c_str() );
        subPos1 = subPos2 + 1;
        //
        subPos2 = strTmp.find( ",", subPos1 );
        subStrTmp = strTmp.substr( subPos1, subPos2 - subPos1 );
        data->rewardMultiple = atoi( subStrTmp.c_str() );
        subPos1 = subPos2 + 1;
        //
        subPos2 = strTmp.find( ",", subPos1 );
        subStrTmp = strTmp.substr( subPos1, subPos2 - subPos1 );
        data->chance = atof( subStrTmp.c_str() );
        subPos1 = subPos2 + 1;
        // 记录数据
        dataMap[ data->id ] = data;
    }

    if( pos == - 1 ) {
        break;
    }
    i = pos;
}

拆分的CSV里面的数据格式为：

id,cardType,rewardMultiple,chance
1,5,10,测试

所以从第二行开始才是真是的数据