JavaScript

Set a MIME Body from Transfer-Encoded Text

Demonstrates the Chilkat Mime.SetBodyFromEncoded method, which sets the body from already transfer-encoded text. The first argument is the encoding (base64 or quoted-printable) and the second is the encoded text.

Background: Sometimes you already hold content in its encoded form — a Base64 string from a database or another API — and re-decoding just to have Chilkat re-encode it is wasteful. This method stores the encoded text as-is and records the matching transfer encoding, so the body is correct without a needless round trip. Only the standard reversible encodings, Base64 and quoted-printable, are accepted.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

JavaScript

var success = false;

//  Demonstrates the Mime.SetBodyFromEncoded method, which sets the body from already transfer-
//  encoded text.  The 1st argument is the encoding ("base64" or "quoted-printable") and the 2nd is
//  the encoded text.

var mime = new CkMime();

mime.ContentType = "text/plain";

//  The body is provided already Base64-encoded; Chilkat stores it without re-encoding.
var base64Body = "SGVsbG8sIHRoaXMgaXMgdGhlIGJvZHku";
success = mime.SetBodyFromEncoded("base64",base64Body);
if (success == false) {
    console.log(mime.LastErrorText);
    return;
}

//  The decoded body is the original text.
var decoded = mime.GetBodyDecoded();
if (mime.LastMethodSuccess == false) {
    console.log(mime.LastErrorText);
    return;
}

console.log(decoded);