rfc_6901 0.0.0-nullsafety.4 rfc_6901: ^0.0.0-nullsafety.4 copied to clipboard
JSON Pointer (RFC 6901). Reads/writes referred values in JSON documents.
import 'dart:convert';
import 'package:rfc_6901/rfc_6901.dart';
void main() {
const json = '{"foo": [{"bar": 42}]}';
final document = jsonDecode(json);
print('Original document: $document');
[
'/foo', // reads the array
'/foo/0', // reads the first element of the array
'/foo/0/bar', // reads 42
].map((expression) => JsonPointer(expression)).forEach((pointer) {
print('Pointer "$pointer" reads ${pointer.read(document)}');
});
[
'/foo/0/bar', // {foo: [{bar: banana}]}
'/foo/-', // {foo: [{bar: 42}, banana]}
'/a/b/-/c/d', // {foo: [{bar: 42}], a: {b: [{c: {d: banana}}]}}
].map((expression) => JsonPointer(expression)).forEach((pointer) {
final d = pointer.write(document, 'banana');
print('Add a banana at "$pointer": $d');
});
}