C + + Jsoncpp parse for JSON string parsing and conversion to complement JSON format validation

Recently, when using jsoncpp, it is necessary to determine whether the current string is the correct JSON format, but jsoncpp the string as the correct JSON data, resulting in an error when fetching

Add a validation method that verifies that the data is correct before conversion, before converting

1 BOOLIsjsonillegal (Const Char*jsoncontent)2 {3std::stack<Char>Jsonstr;4     Const Char*p =jsoncontent;5     CharStartchar = jsoncontent[0];6     CharEndChar =' /';7     BOOLIsObject =false;//Prevent {} {} from judging8     BOOLIsArray =false;//prevention of [] judgment9 Ten      while(*p! =' /') One     { AEndChar = *p; -         Switch(*p) -         { the          Case '{': -             if(!IsObject) -             { -IsObject =true; +             } -             Elseif (Jsonstr.empty ())//object repeat into stack +             { A                 return false; at             } -Jsonstr.push ('{'); -              Break; -          Case '"': -             if(Jsonstr.empty () | | jsonstr.top ()! ='"') -             { inJsonstr.push (*p); -             } to             Else +             { - Jsonstr.pop (); the             } *              Break; $          Case '[':Panax Notoginseng             if(!IsArray) -             { theIsArray =true; +             } A             Elseif (Jsonstr.empty ())//array repeat in stack the             { +                 return false; -             } $Jsonstr.push ('['); $              Break; -          Case ']': -             if(Jsonstr.empty () | | jsonstr.top ()! ='[') the             { -                 return false;Wuyi             } the             Else -             { Wu Jsonstr.pop (); -             } About              Break; $          Case '}': -             if(Jsonstr.empty () | | jsonstr.top ()! ='{') -             { -                 return false; A             } +             Else the             { - Jsonstr.pop (); $             } the              Break; the          Case '\\'://escaped characters, skipping thep++; the              Break; -         default: in             ; the         } thep++; About     } the  the     if(Jsonstr.empty ()) the     { +         //Make sure it's an object or an array, not a valid one. -         Switch(Startchar)//Ensure that the symbol corresponds the         {Bayi          Case  '{': the         { the             if(EndChar ='}') -             { -                 return true; the             } the             return false; the         } the          Case '[': -         { the             if(EndChar =']') the             { the                 return true;94             } the             return false; the         } the         default:98             return false; About         } - 101         return true;102     }103     Else104     { the         return false;106     }107}

C + + Jsoncpp parse for JSON string parsing and conversion to complement JSON format validation