// // Created by Ht on 2022/11/10. // #ifndef IOT_EDGE_VDALNEW_JAEXUTIL_H #define IOT_EDGE_VDALNEW_JAEXUTIL_H #include namespace ja { class JE_API JAExUtil { public: static void clearTypePrefix (std::string& dest) { if(dest.empty() || dest == "$null") { dest.clear(); return; } //查找 auto next = dest.find("__$"); auto size = dest.size(); while(next!=std::string::npos && next < size-1) { auto t = dest[next+3]; switch (t) { case 'n': //数字 __$n case 'b': //布尔 case 'f': //浮点 case 's': //字符串 case 'o': //对象 dest.erase(next, 4); size = dest.size(); break; default: //不做改变 break; } if(next>=size) break; next = dest.find("__$", next+1); } } }; } #endif //IOT_EDGE_VDALNEW_JAEXUTIL_H