ocaml-json-pointer

This OCaml library implements RFC 6901 -- JSON pointer.

JSON Pointer defines a string syntax for identifying a specific value within a JavaScript Object Notation (JSON) document.

Given the following JSON data

{
  a: {
    b: "hello world"
  }
}

you can extract a JSON sub-document and print hello world as follows:

let _ =
  let path = Json_pointer.of_string_exn "/a/b" in
  let data = Yojson.Safe.from_file the_json_file in
  let result = Json_pointer.resolve_exn path data in
  Yojson.Safe.pretty_to_channel stdout result

The json-pointer library is written by Markus Weissmann.

The source-code of ocaml-json-pointer is available under the MIT license.