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Parse MIME Header Fields

See more MIME Examples

Demonstrates how to parse MIME header fields, including Content-Type, Content-Disposition, and Content-Transfer-Encoding.

This example uses a MIME test file located at http://www.chilkatsoft.com/testData/sampleMime2.txt. It contains the following MIME:

Content-Type: multipart/mixed;
 boundary="------------080707010302060306060800";

This is a multi-part message in MIME format.

--------------080707010302060306060800
Content-Type: text/plain
Content-Transfer-Encoding: 7bit

This is the plain-text body.
--------------080707010302060306060800
Content-Disposition: attachment; filename="starfish.gif";
Content-Transfer-Encoding: base64
Content-Type: image/gif; name="starfish.gif";

R0lGODlhIAAgAPcAAP///+/v7/f39+/n5/fv7//39/fn597OzufW1tbGxs69vffe3u/W1salpZQQ
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--------------080707010302060306060800--

AutoIt

Local $bSuccess = False

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

$oMime = ObjCreate("Chilkat.Mime")

; Load the sampleMime2.txt file into the MIME object.
; (This file is available at http://www.chilkatsoft.com/testData/sampleMime2.txt )

$bSuccess = $oMime.LoadMimeFile("sampleMime2.txt")
If ($bSuccess = False) Then
    ConsoleWrite($oMime.LastErrorText & @CRLF)
    Exit
EndIf

; The GIF image is the 2nd sub-part located directly under the
; top-level MIME node.  Indexing begins at 0, therefore the 2nd
; sub-part is at index 1.
$oPart2 = ObjCreate("Chilkat.Mime")
$bSuccess = $oMime.PartAt(1,$oPart2)
If ($bSuccess = False) Then
    ConsoleWrite($oMime.LastErrorText & @CRLF)
    Exit
EndIf

; -------------------------------
; Content-Disposition
; -------------------------------
; In this example, the Content-Disposition header field
; contains this value:
; attachment; filename="starfish.gif"

; To get the "filename", call GetHeaderFieldAttribute
; Header field names and attribute names are case insensitive.
Local $sFilename = $oPart2.GetHeaderFieldAttribute("Content-Disposition","filename")
ConsoleWrite("Filename: " & $sFilename & @CRLF)

; Because the "filename" is so often accessed, it is also available
; by accessing the "Filename" property:
ConsoleWrite("Filename: " & $oPart2.Filename & @CRLF)

; The disposition (without attributes) which in this case 
; is the string "attachment" is accessed via the Disposition property:
ConsoleWrite("Disposition: " & $oPart2.Disposition & @CRLF)

; To get the full value of the Content-Disposition header field,
; call GetHeaderField.
ConsoleWrite("Content-Disposition: " & $oPart2.GetHeaderField("Content-Disposition") & @CRLF)

; -------------------------------
; Content-Type
; -------------------------------
; In this example, the Content-Type header field
; contains this value:
; image/gif; name="starfish.gif"

; To get the "name", call GetHeaderFieldAttribute
Local $sName = $oPart2.GetHeaderFieldAttribute("Content-Type","name")
ConsoleWrite("Content-Type name: " & $sName & @CRLF)

; Because the "name" is so often accessed, it is also available
; by accessing the "Name" property:
ConsoleWrite("Content-Type name: " & $oPart2.Name & @CRLF)

; The content-type without attributes is available in the
; ContentType property:
ConsoleWrite("Content-Type: " & $oPart2.ContentType & @CRLF)

; To get the full value of the Content-Type header field,
; call GetHeaderField.
ConsoleWrite("Content-Type: " & $oPart2.GetHeaderField("Content-Type") & @CRLF)

; -------------------------------
; Content-Transfer-Encoding
; -------------------------------

; The Encoding property contains the value of the
; Content-Transfer-Encoding property. 
; Calling GetHeaderField("Content-Transfer-Encoding") is
; equivalent to accessing the Encoding property:
ConsoleWrite("Content-Transfer-Encoding: " & $oPart2.Encoding & @CRLF)
ConsoleWrite("Content-Transfer-Encoding: " & $oPart2.GetHeaderField("Content-Transfer-Encoding") & @CRLF)

ConsoleWrite("Finished." & @CRLF)