cpp-json

Header-only JSON library for C++17

Introduction

• cpp-json is a code library for handling JSON in C++ applications, requiring C++17 or higher.
• To use, simply include the cppjson.h header file in your project.
• The library offers features for creating, managing, saving, and loading JSON data, as well as converting between JSON and strings.

Installation

Requirements

• CMake
• Compiler with C++17 support
  • GCC 7.3 or later
  • Clang 5.0 or later
  • MSVC 19.14 or later

Build

• Run the following commands to build cpp-json.
  • mkdir build && cd build
  • cmake ..
  • make
  • sudo make install

Run example code

• After building the library, build directory will contain an example executable.
  • ./example_main

Usage

Creating JSON

#include <cppjson.h>
using namespace json;

Json json
{
	{"best_club", "FC Bayern"},
	{"best_players", Array{"Manuel Neuer", "Thomas Müller"}},
	{"best_coach", Object{{"name", "Hansi Flick"}, {"age", 56}}}
};

Accessing JSON

auto club = json["best_club"];
auto player = json["best_players"][0];
auto coach = json["best_coach"]["name"];

Modifying JSON

json["best_coach"]["name"] = "Jupp Heynckes";
json["best_coach"]["age"] = 75;
json["best_players"].GetValue<Array>().push_back("Joshua Kimmich");

Converting string to JSON

std::string json_str = R"(
{
    "best_club": "FC Bayern"
}
)";
Json json = Utility::Parse(json_str);
std::cout << json["best_club"] << std::endl;

License

• cpp-json is licensed under the MIT License.

Contributing

• Contributions are welcome! Please feel free to submit a Pull Request.