JSON++11

A JSON reader+writer library for C++11.

• Easy to use
• Super fast
• Full automatic transparent unicode support through utf8

This is the best c++11 JSON library that I know of. It does generation and parsing. It's all headers.

To use in your project:

Download these headers into your source:

• https://raw.githubusercontent.com/matiu2/json--11/master/src/json.hpp
• https://raw.githubusercontent.com/matiu2/json--11/master/src/mapper.hpp
• https://raw.githubusercontent.com/matiu2/json--11/master/src/parser.hpp
• https://raw.githubusercontent.com/matiu2/json--11/master/src/json_class.hpp
• https://raw.githubusercontent.com/matiu2/json--11/master/src/utf82json.hpp
• https://raw.githubusercontent.com/matiu2/json--11/master/src/locatingIterator.hpp

Only one file to include

#include "json.hpp"

To generate json

using namespace json;

JSON j{
    JMap{
        {"name", "Mister Awesome"},
        {"age", 40}
        {"items", JList{
            {"Hammer"}, {20.2}, {"Sword"}
        }},
        {"This is a null value", {}}
    }
};

std::cout << j;

Will output something like:

{"name":"Mister Awesome","age":40,"items":["Hammer",20.2,"Sword"],"This is a null value":null}

---

Parsing

Easy parsing, using a stream

JSON myJSON;
std::cin >> myJSON;

Conversion

Most conversion is done through casting.

Examples

• unicode
• castToInt
• unicode
• vectorOfStrings
• mapOfInts

Advanced parsing

There are several 'json::read' functions for stream, string and other iterators:

JSON read(std::istream &in, bool skipOverErrors = false);
JSON read(const std::string &in, bool skipOverErrors = false);
template<typename T>
JSON read(T begin, T end, bool skipOverErrors = false) {

If your input contains several JSON values, use these functions. They will return the point where they finished parsing, so you can get the next bit.

using StreamIterator=std::istream_iterator<char>;
using LocStreamIterator = LocatingIterator<StreamIterator>;
std::pair<JSON, LocStreamIterator> readWithPos(std::istream &in, bool skipOverErrors = false);

using LocStringIterator = LocatingIterator<std::string::const_iterator>;
std::pair<JSON, LocStringIterator> readWithPos(const std::string &in, bool skipOverErrors = false);

template<typename T>
std::pair<JSON, LocatingIterator<T>>  readWithPos(T begin, T end, bool skipOverErrors = false);