Node.js Requires Chilkat v11.7.0+

A PDF Label That Is Not on the Page: notFound or Ignore

See more PDF Text Replacement Examples

Demonstrates the "unmatchedValues" option. A label or placeholder given a value but not found on the selected pages is a problem with the reason notFound, which stops "apply", because a missing label usually means the wrong document or a typo in the label. With unmatchedValues "ignore" such a value is skipped and the rest is applied -- the right choice when one set of values serves several document layouts. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var 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 invoice_labels.pdf

    var pdf = new chilkat.Pdf();
    success = pdf.LoadFile("qa_data/pdf/invoice_labels.pdf");
    if (success == false) {
        console.log(pdf.LastErrorText);
        return;
    }

    var json = new chilkat.JsonObject();
    var jsonOut = new chilkat.JsonObject();

    //  "Tracking Number:" is not on this invoice.
    json.UpdateString("labels[0].label","Invoice Number:");
    json.UpdateString("labels[0].value","INV-2026-0500");
    json.UpdateString("labels[1].label","Tracking Number:");
    json.UpdateString("labels[1].value","1Z999AA10123456784");

    success = pdf.TextReplace("check",json,jsonOut);
    if (success == false) {
        console.log(pdf.LastErrorText);
        return;
    }

    console.log("default: ok = " + jsonOut.BoolOf("ok") + ", problem: \"" + jsonOut.StringOf("problems[0].label") + "\" " + jsonOut.StringOf("problems[0].reason"));

    //  With "ignore", the label that is not there is skipped.
    json.UpdateString("unmatchedValues","ignore");
    success = pdf.TextReplace("apply",json,jsonOut);
    if (success == false) {
        console.log(pdf.LastErrorText);
        return;
    }

    console.log("ignore: applied = " + jsonOut.BoolOf("applied") + ", replacements: " + jsonOut.SizeOfArray("replacements"));

    success = pdf.WriteFile("qa_output/invoice_renumbered.pdf");
    if (success == false) {
        console.log(pdf.LastErrorText);
        return;
    }

    //  Sample output:

    //  default: ok = false, problem: "Tracking Number:" notFound
    //  ignore: applied = true, replacements: 1

}

chilkatExample();