如何使用libxml2 sax解析器从xml获取属性的名称和值?

I got stuck on trying to detect the pair of name and value of the attributes in some general xmls by using libxml2 for parsing the api on iPhone application. For my project, the parsing speed is really important, so I decided to use libxml2 itself instead of using NSXMLParser.I got stuck on trying to detect the pair of nam