Pascal (Lazarus/Delphi)

JSON Hex Encoding

See more JSON Examples

Let's say your JSON contains content that is hex encoded like this: \u05d1\u05d3\u05d9\u05e7

This example shows how to get the decoded string.

Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.JsonObject,
  Chilkat.StringBuilder;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  s: string;
  json: TJsonObject;
  sb: TStringBuilder;

begin
  success := False;

  s := '{ "example": "\\u05d1\\u05d3\\u05d9\\u05e7" }';

  json := TJsonObject.Create;

  success := json.Load(s);

  //  When getting the member data, it is automatically decoded.
  WriteLn('member data: ' + json.StringOf('example'));

  //  Output:
  //  member data: בדיק

  //  When getting the full JSON, it remains encoded. This is expected and intentional.
  WriteLn('full JSON: ' + json.Emit());

  //  Output:
  //  full JSON: {"example":"\u05d1\u05d3\u05d9\u05e7"}

  //  To get the full JSON without the encoding, you can decode manually.
  sb := TStringBuilder.Create;
  json.EmitSb(sb);
  //  The hex encoding used by JSON is utf-8.
  sb.Decode('json','utf-8');

  WriteLn(sb.GetAsString());

  //  Output:
  //  {"example":"בדיק"}


  json.Free;
  sb.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.