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Binary string causes numbers to be dumped as hex #101
Description
The following code dumps the value of the number field in hexadecimal format (without leading 0x, but that's not legal json anyway afaik) when there's also a string containing a symbol between \x00 and \x1f.
#include <iostream>
#include "json.hpp"
using namespace std;
using json = nlohmann::json;
int main()
{
int64_t number = 10;
cout << "number: " << number << endl;
string bytes{"\x00" "asdf\n", 6};
cout << "bytes: " << bytes << endl;
//json j{{"int64", number}, {"binary string", bytes}};
json j;
j["int64"] = number;
j["binary string"] = bytes;
cout << j.dump() << endl;
return 0;
}The output looks like this:
number: 10
bytes: asdf
{"binary string":"\u0000asdf\n","int64":a}
Using the latest revision (540c589)
Activity
nlohmann commentedon Jul 1, 2015
I can reproduce the error. I have no idea yet why the
dump()function decides to print the number as hex, but the library seems to be confused by the control character inside the string. I'll continue checking.nlohmann commentedon Jul 1, 2015
I found the reason for the problem: The control characters need to be escaped as
\uxxxx. In that part of the code, an internal string stream is configured to print the character as hexadecimal number. This needs to be reset, because otherwise all subsequent numbers would be printed as hexadecimal (ainstead of10).Review round 2 (nlohmann#92)
Review round 2 (nlohmann#92)