Dart

JSON Escape and Unescape a String

Demonstrates how to JSON escape or unescape a string. Dart

import 'package:chilkat/chilkat.dart';

void main() {
  final sb = CkStringBuilder();

  sb.append('backslash: \\\\, A: \\u0041');
  print(sb.getAsString());

  // The output is:
  //    backslash: \\, A: \u0041

  // The keyword "json" can be used
  // to escape and unescape.  To escape is to encode.  To unescape is to decode.

  // Unescape (decode) the string in sb.
  sb.decode('json', 'utf-8');
  print(sb.getAsString());

  // After JSON unescaping:
  //    backslash: \, A: A

  // Now JSON escape the string.
  sb.encode('json', 'utf-8');
  print(sb.getAsString());

  // After JSON escaping:
  //    backslash: \\, A: A

  // Note: The "A" is not escaped to "\u0041" because there is no need.
  // The "\uXXXX" format would be produced for non-printable control chars.
}