Visual FoxPro
Get the Value of a MIME Header Field

Demonstrates how to get the value of a MIME header field. If the header field is not in the top-level MIME header, we must first navigate to the correct MIME part.
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LOCAL lnSuccess
LOCAL loMime
LOCAL loMpRelated
LOCAL loPJpg

lnSuccess = 0

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

loMime = CreateObject('Chilkat.Mime')

* The contents of this MIME file are shown below, 
* and is also available at https://www.chilkatsoft.com/sampleMime.txt
lnSuccess = loMime.LoadMimeFile("qa_data/mime/sampleMime.txt")
IF (lnSuccess = 0) THEN
    ? loMime.LastErrorText
    RELEASE loMime
    CANCEL
ENDIF

* The MIME used in this example has the following nested structure
* 
* multipart/alternative
*     text/plain
*     multipart/related
*         text/html
*         image/jpeg
* 

* Getting the content of a top-level MIME header is easy.
* MIME header fields are case insensitive.
? "Subject = " + loMime.GetHeaderField("subject")
? "MIME-Version = " + loMime.GetHeaderField("mime-version")

* To get a MIME header in a sub-part, first navigate to it..

loMpRelated = CreateObject('Chilkat.Mime')
lnSuccess = loMime.PartAt(1,loMpRelated)
IF (lnSuccess = 0) THEN
    ? loMime.LastErrorText
    RELEASE loMime
    RELEASE loMpRelated
    CANCEL
ENDIF

loPJpg = CreateObject('Chilkat.Mime')
lnSuccess = loMpRelated.PartAt(1,loPJpg)
IF (lnSuccess = 0) THEN
    ? loMpRelated.LastErrorText
    RELEASE loMime
    RELEASE loMpRelated
    RELEASE loPJpg
    CANCEL
ENDIF

? "JPG Content-ID = " + loPJpg.GetHeaderField("content-id")
? "JPG Content-Type = " + loPJpg.GetHeaderField("content-type")

* --------------------------------------------------------------
* --------------------------------------------------------------
* 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.&nbsp; <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--
* 

RELEASE loMime
RELEASE loMpRelated
RELEASE loPJpg