minijson

minimal but secure JSON parser

Features

• Single header-only.
• minimal STL dependency.
• No C++ RTTI and C++ exceptions
  • Easy to embed to your app.
• Fuzz tested
  • Parser should not crash for invalid/malcious input.
• Support UTF8 Unicode escape sequence(\uXXXX)
• Robust parsing of floating point string.

Limitation

• Duplicated key is not allowed

Usage

const char* foo = R"(
{"empty":{"":[]}, "foo":
3.2, "bar": "baz", "baz": true,"hoge":{"a":"あい\nうおえ"}, "moge": null, "zz": 255
, "rrr":[[2,"3"], "4"], "fuba": 1e9}
)";
minijson::error e = minijson::parse(p, v);

The pointer p will be shift to the end of token. So it is the caller's responsibility to check whether the extra tokens are treated as errors.

License

MIT

Third party licenses

• from_chars Apache 2.0 license.
• to_chars MIT license
• parse escaped characters: nlohmann json. MIT license. https://github.com/nlohmann/json

Author

Yasuhiro Matsumoto

Modification by Syoyo Fujita.

TODO

• Pretty print
• Unicode escape sequence and other escape characters.
  • Thanks to nlohmann json's scan_string()
• Harden parse() API
  • Only allow string with length parameter
• Write robust JSON writer
  • Escape unicode character