https://github.com/yinqiwen/kcfg

A simple c++ json class/struct mapping head-only library.
https://github.com/yinqiwen/kcfg

config cpp json mapping

Last synced: about 2 months ago
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A simple c++ json class/struct mapping head-only library.

• Host: GitHub
• URL: https://github.com/yinqiwen/kcfg
• Owner: yinqiwen
• Created: 2017-12-14T10:00:21.000Z (about 7 years ago)
• Default Branch: master
• Last Pushed: 2024-06-13T07:57:21.000Z (7 months ago)
• Last Synced: 2024-06-14T07:22:42.900Z (7 months ago)
• Topics: config, cpp, json, mapping
• Language: C++
• Homepage:
• Size: 170 KB
• Stars: 6
• Watchers: 4
• Forks: 2
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

        
kcfg

======

A head-only C++ json/toml/yaml config mapping library. 

## Dependency

- [rapidjson](https://github.com/Tencent/rapidjson)

- [toml](https://github.com/ToruNiina/toml11)

- [yaml](https://github.com/jbeder/yaml-cpp)

## Limit

- C++17

- Max 256 fields in a struct/class

## Example

```cpp

#include "kcfg_json.h"

#include "kcfg_toml.h"

#include "kcfg_yaml.h"

struct ConfigItem

{

        int v0;

        int y0;

        KCFG_DEFINE_FIELDS(v0, y0);

        KCFG_YAML_DEFINE_FIELDS(v0, y0);

        KCFG_TOML_DEFINE_FIELDS(v0, y0);

};

struct Config

{

        int64_t x;

        int y;

        float z;

        std::string aa;

        std::map m1;

        std::vector v2;

        std::vector v3;

        KCFG_DEFINE_FIELDS(x, y, z, aa, m1, v2, v3);

        KCFG_YAML_DEFINE_FIELDS(x, y, z, aa, m1, v2, v3);

        KCFG_TOML_DEFINE_FIELDS(x, y, z, aa, m1, v2, v3);

        Config()

                : x(0), y(0), z(0)

        {

        }

};

int main(int argc, char *argv[])

{

    std::string json = "{\"x\":1, \"y\":101, \"z\":2.1, \"aa\":\"val\", \"m1\":{\"k1\":102}, \"v2\":[\"v0\"]}";

    Config cfg;

    kcfg::ParseFromJsonString(json, cfg);

    // kcfg::ParseFromTomlString(content, t);

    // kcfg::ParseFromYamlString(content, t);

    cfg.v2.push_back("testa");

    cfg.v2.push_back("testv");

    cfg.v3.resize(2);

    cfg.v3[0].v0 = 101;

    cfg.v3[1].y0 = 987;

    std::string kstr;

    kcfg::WriteToJsonString(cfg, kstr);

    printf("%s\n",kstr.c_str());

    return 0;

}

```

## Embedding kcfg

Just copy all headers into your project.