(Node.js) Quoted-Printable Encode/Decode a String

Node.js example to quoted-printable encode and decode a string.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOS

var os = require('os');
if (os.platform() == 'win32') {  
  var chilkat = require('@chilkat/ck-node23-win64'); 
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node23-linux-arm');
    } else if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node23-linux-arm64');
    } else {
        var chilkat = require('@chilkat/ck-node23-linux-x64');
    }
} else if (os.platform() == 'darwin') {
  var chilkat = require('@chilkat/ck-node23-mac-universal');
}

function chilkatExample() {

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

    var crypt = new chilkat.Crypt2();

    // Here's a string in Icelandic using non us-ascii chars:
    var s = "Ég get etið gler án þess að meiða mig.";

    crypt.CryptAlgorithm = "none";
    crypt.EncodingMode = "quoted-printable";

    // Quoted-printable encode/decode the iso-8859-1
    // representation of the string.  Notice how each
    // Icelandic char is represented by 1 byte:
    crypt.Charset = "iso-8859-1";
    var qp = crypt.EncryptStringENC(s);
    console.log("iso-8859-1:");
    console.log(qp);
    var decoded = crypt.DecryptStringENC(qp);
    console.log(decoded);

    // Now do the same using utf-8. Notice how each
    // Icelandic char is represented by 2 bytes in utf-8:
    crypt.Charset = "utf-8";
    var qp = crypt.EncryptStringENC(s);
    console.log("utf-8:");
    console.log(qp);
    var decoded = crypt.DecryptStringENC(qp);
    console.log(decoded);

}

chilkatExample();