PDF Placeholders with Other Delimiters: [[name]]

var
success: Boolean;
pdf: HCkPdf;
json: HCkJsonObject;
jsonOut: HCkJsonObject;
i: Integer;
count_i: Integer;

begin
success := False;

//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

//  The PDF used in this example is available at letter_template.pdf

pdf := CkPdf_Create();
success := CkPdf_LoadFile(pdf,'qa_data/pdf/letter_template.pdf');
if (success = False) then
  begin
    Memo1.Lines.Add(CkPdf__lastErrorText(pdf));
    Exit;
  end;

//  The letter reads: "Dear [[name]]," ... "expires on [[expiry]]" ... "[[amount]] per year" ... "[[agent]]".
json := CkJsonObject_Create();
CkJsonObject_UpdateString(json,'placeholderSyntax','[[name]]');
CkJsonObject_UpdateString(json,'placeholders.date','October 18, 2026');
CkJsonObject_UpdateString(json,'placeholders.name','Ms. Rivera');
CkJsonObject_UpdateString(json,'placeholders.expiry','December 31, 2026');
CkJsonObject_UpdateString(json,'placeholders.amount','$299.00');
CkJsonObject_UpdateString(json,'placeholders.agent','Dana Whitfield, Account Manager');

jsonOut := CkJsonObject_Create();
success := CkPdf_TextReplace(pdf,'apply',json,jsonOut);
if (success = False) then
  begin
    Memo1.Lines.Add('Not applied: ' + CkJsonObject__emit(jsonOut));
    if (success = False) then
      begin
        Memo1.Lines.Add(CkPdf__lastErrorText(pdf));
        Exit;
      end;
  end;

i := 0;
count_i := CkJsonObject_SizeOfArray(jsonOut,'replacements');
while i < count_i do
  begin
    CkJsonObject_putI(jsonOut,i);
    Memo1.Lines.Add('[[' + CkJsonObject__stringOf(jsonOut,'replacements[i].field') + ']] replaced');
    i := i + 1;
  end;

success := CkPdf_WriteFile(pdf,'qa_output/letter_rivera.pdf');
if (success = False) then
  begin
    Memo1.Lines.Add(CkPdf__lastErrorText(pdf));
    Exit;
  end;

//  Sample output:

//  [[date]] replaced
//  [[name]] replaced
//  [[expiry]] replaced
//  [[amount]] replaced
//  [[agent]] replaced

CkPdf_Dispose(pdf);
CkJsonObject_Dispose(json);
CkJsonObject_Dispose(jsonOut);