PDF Placeholders with Other Delimiters: [[name]]

#import <CkoPdf.h>
#import <CkoJsonObject.h>

BOOL success = NO;

//  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

CkoPdf *pdf = [[CkoPdf alloc] init];
success = [pdf LoadFile: @"qa_data/pdf/letter_template.pdf"];
if (success == NO) {
    NSLog(@"%@",pdf.LastErrorText);
    return;
}

//  The letter reads: "Dear [[name]]," ... "expires on [[expiry]]" ... "[[amount]] per year" ... "[[agent]]".
CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json UpdateString: @"placeholderSyntax" value: @"[[name]]"];
[json UpdateString: @"placeholders.date" value: @"October 18, 2026"];
[json UpdateString: @"placeholders.name" value: @"Ms. Rivera"];
[json UpdateString: @"placeholders.expiry" value: @"December 31, 2026"];
[json UpdateString: @"placeholders.amount" value: @"$299.00"];
[json UpdateString: @"placeholders.agent" value: @"Dana Whitfield, Account Manager"];

CkoJsonObject *jsonOut = [[CkoJsonObject alloc] init];
success = [pdf TextReplace: @"apply" jsonIn: json jsonOut: jsonOut];
if (success == NO) {
    NSLog(@"%@%@",@"Not applied: ",[jsonOut Emit]);
    if (success == NO) {
        NSLog(@"%@",pdf.LastErrorText);
        return;
    }

}

int i = 0;
int count_i = [[jsonOut SizeOfArray: @"replacements"] intValue];
while (i < count_i) {
    jsonOut.I = [NSNumber numberWithInt: i];
    NSLog(@"%@%@%@",@"[[",[jsonOut StringOf: @"replacements[i].field"],@"]] replaced");
    i = i + 1;
}

success = [pdf WriteFile: @"qa_output/letter_rivera.pdf"];
if (success == NO) {
    NSLog(@"%@",pdf.LastErrorText);
    return;
}

//  Sample output:

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