(Node.js) MIME Header Q and B Encoding and Decoding

Demonstrates how to Q and B encode/decode.

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

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

    var sb = new chilkat.StringBuilder();
    var success;

    sb.Append("This is a test");

    console.log(sb.GetEncoded("B","utf-8"));
    // output is:
    // =?utf-8?B?VGhpcyBpcyBhIHRlc3Q=?=

    console.log(sb.GetEncoded("Q","iso-8859-1"));
    // output is:
    // =?utf-8?Q?This_is_a_test?=

    var sb2 = new chilkat.StringBuilder();

    sb2.Append("=?utf-8?B?VGhpcyBpcyBhIHRlc3Q=?=");
    sb2.Decode("B","utf-8");
    console.log(sb2.GetAsString());

    // output is:
    // This is a test

    sb2.Clear();
    sb2.Append("=?utf-8?Q?This_is_a_test?=");
    sb2.Decode("Q","utf-8");
    console.log(sb2.GetAsString());

    // output is:
    // This is a test

    // "B" or "Q" will decode both B and Q.
    sb2.Clear();
    sb2.Append("=?utf-8?Q?This_is_a_test?= 123 =?utf-8?B?VGhpcyBpcyBhIHRlc3Q=?=");
    sb2.Decode("Q","utf-8");
    console.log(sb2.GetAsString());

    // output is:
    // This is a test 123 This is a test

}

chilkatExample();