CODEWITHSUNDEEP
c++cjsonparsingrapidjson
hmojtaba
hmojtaba

Reputation: 167

on rapidjson, encode just a number to string then decode it

using rapidjson, how can i encode a number to json format? i have 123.321, i want to convert it to "123.321", then save it in a file. later using json convert it back to 123.321. i don't want to use Document which saves as like "{"tag":"value"}", i want it to be saved as just a "value", then be converted back.

i have the following code to convert number to "number":

Value v(123);
StringBuffer mybuffer;
Writer<StringBuffer> mywriter(mybuffer);
v.Accept(mywriter);
const char* myjson = mybuffer.GetString();

how to convert it back? is the following a solution? i don't want to use handler!

Reader reader;           
StringStream ss(myjson); 
reader.Parse(ss, handler);

thanks for the upcoming helps.

Upvotes: 1

Views: 2279

Answers (1)

hmojtaba
hmojtaba

Reputation: 167

I just found the answer after digging into google:

to encode a number to json using rapidjson:

Value v(123.321);
StringBuffer mybuffer;
Writer<StringBuffer> mywriter(mybuffer);
v.Accept(mywriter);
const char* myjson = mybuffer.GetString();

now myjson has "123.321" as its value. then to decode myjson to a number:

Document d;
d.Parse(myjson); // myjson is "123.321"
assert(d.IsNumber());
value = d.GetDouble(); // now the value is 123.321

as simple as it gets.

Upvotes: 3

Related Questions