|
|
(JavaScript) Add, Remove, Update MIME Header Fields
Demonstrates how to add, remove, or update the content of MIME header fields.
var success = false;
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
var mime = new CkMime();
// The contents of this MIME file are shown below,
// and is also available at https://www.chilkatsoft.com/sampleMime.txt
success = mime.LoadMimeFile("qa_data/mime/sampleMime.txt");
if (success == false) {
console.log(mime.LastErrorText);
return;
}
// The MIME used in this example has the following nested structure
//
// multipart/alternative
// text/plain
// multipart/related
// text/html
// image/jpeg
//
// Adding a top-level MIME header is easy.
mime.AddHeaderField("hello-world","Hello World!");
// If a header field of the same name already exists, the AddHeaderField
// method adds a duplicate.
mime.AddHeaderField("Subject","This is the 2nd Subject header.");
console.log(mime.GetEntireHead());
console.log("-");
// The top-level header now looks like this:
//
// Subject: Test email.
// Content-Type: multipart/alternative; boundary="------------DB171738719FB06D67DEBAA0"
// MIME-Version: 1.0
// hello-world: Hello World!
// Subject: This is the 2nd Subject header.
//
// The RemoveHeaderField method can remove the 1st occurrance, or all occurrences.
var bAllOccurrences = true;
// Remove all occurrences of the Subject header;
mime.RemoveHeaderField("Subject",bAllOccurrences);
console.log(mime.GetEntireHead());
console.log("-");
// After removing all Subject header fields, the top-level header now looks like this:
//
// Content-Type: multipart/alternative; boundary="------------DB171738719FB06D67DEBAA0"
// MIME-Version: 1.0
// hello-world: Hello World!
//
// The content of a header field can be updated by calling SetHeaderField.
// If the header field does not already exist, it is added. Otherwise it is updated.
// Note: The order of header fields SHOULD never matter.
mime.SetHeaderField("hello-world","Goodbye World.");
console.log(mime.GetEntireHead());
console.log("-");
// Now we have:
//
// Content-Type: multipart/alternative; boundary="------------DB171738719FB06D67DEBAA0"
// MIME-Version: 1.0
// hello-world: Goodbye World.
//
// To add/update/delete header fields in sub-parts, navigate to
// the sub-part and do the same..
var mpRelated = new CkMime();
mime.PartAt(1,mpRelated);
var pJpg = new CkMime();
mpRelated.PartAt(1,pJpg);
// Add a header to the image/jpeg sub-header.
pJpg.SetHeaderField("CustomHeader","This is the custom header value.");
// View the entire MIME..
console.log(mime.GetMime());
// --------------------------------------------------------------
// --------------------------------------------------------------
// The MIME sample file loaded at the beginning of this example
// contains the following MIME:
// Subject: Test email.
// Content-Type: multipart/alternative;
// boundary="------------DB171738719FB06D67DEBAA0"
// MIME-Version: 1.0
//
// --------------DB171738719FB06D67DEBAA0
// Content-Type: text/plain; charset="utf-8"; format=flowed
// Content-Transfer-Encoding: 7bit
//
// This is a test.
//
// --------------DB171738719FB06D67DEBAA0
// Content-Type: multipart/related;
// boundary="------------A940F1230E6F0105F03DB2CB"
//
// --------------A940F1230E6F0105F03DB2CB
// Content-Type: text/html; charset="utf-8"
// Content-Transfer-Encoding: 8bit
//
// <html><head>
// <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
// </head>
// <body bgcolor="#FFFFFF" text="#000000">
// <p>This is a test. <img src="cid:part1.E16AE3B4.1505C436@chilkatsoft.com" height="20" width="20"></p>
// </body>
// </html>
//
// --------------A940F1230E6F0105F03DB2CB
// Content-Type: image/jpeg; name="starfish20.jpg"
// Content-Transfer-Encoding: base64
// Content-ID: <part1.E16AE3B4.1505C436@chilkatsoft.com>
// Content-Disposition: inline; filename="starfish20.jpg"
//
// /9j/4AAQSkZJRgABAQEASABIAAD//gAmRmlsZSB3cml0dGVuIGJ5IEFkb2JlIFBob3Rvc2hvcD8g
// NC4w/9sAQwAQCwwODAoQDg0OEhEQExgoGhgWFhgxIyUdKDozPTw5Mzg3QEhcTkBEV0U3OFBtUVdf
// YmdoZz5NcXlwZHhcZWdj/9sAQwEREhIYFRgvGhovY0I4QmNjY2NjY2NjY2NjY2NjY2NjY2NjY2Nj
// Y2NjY2NjY2NjY2NjY2NjY2NjY2NjY2NjY2Nj/8IAEQgAFAAUAwERAAIRAQMRAf/EABcAAAMBAAAA
// AAAAAAAAAAAAAAIDBAX/xAAYAQADAQEAAAAAAAAAAAAAAAABAgMEAP/aAAwDAQACEAMQAAAB2kZY
// NNEijWKddfTmLgALWH//xAAbEAACAgMBAAAAAAAAAAAAAAABAgMRAAQSE//aAAgBAQABBQL0XqN+
// pM2aqJGMiqFFCyg7z//EABwRAAICAgMAAAAAAAAAAAAAAAERAAIQIQMSUf/aAAgBAwEBPwHqU5aq
// Axx+y1tMQl4elj//xAAcEQEAAQUBAQAAAAAAAAAAAAABEQACEBIhA1H/2gAIAQIBAT8B3Bhqy7Zc
// enyiwmGgDhiOzj//xAAdEAABAwUBAAAAAAAAAAAAAAABAAIREBIhIkFR/9oACAEBAAY/ArZyn+Cg
// xtxWuJaoCnqDuin/xAAcEAABBAMBAAAAAAAAAAAAAAABABEhYRAxQVH/2gAIAQEAAT8hkEwPUUR9
// DYfE4nxtRpIkBTsayuALIiuY/9oADAMBAAIAAwAAABDWPTsf/8QAGhEAAwADAQAAAAAAAAAAAAAA
// AAEREDFBIf/aAAgBAwEBPxC0DVPcWm+Ce4OesrkE6bjH/8QAGBEBAQEBAQAAAAAAAAAAAAAAAREA
// QRD/2gAIAQIBAT8QahMiOc8YgSrnTY3ELclHXn//xAAcEAEBAAIDAQEAAAAAAAAAAAABEQAhMUFx
// EFH/2gAIAQEAAT8Qn3igmSZSj+c4N4zapMy9IjFV98wncN2iuLFsCEbDGxQkI6RO/n//2Q==
//
// --------------A940F1230E6F0105F03DB2CB--
//
// --------------DB171738719FB06D67DEBAA0--
//
|
