Get the text body content of a MIME part.

Explains and demonstrates the GetBodyEncoded and GetBodyDecoded methods. This example uses the MIME test data located at http://www.chilkatsoft.com/testData/sampleMime1.txt

The sampleMime1.txt contains:

Content-Type: multipart/mixed;
 boundary="------------070404010201060604000708"

This is a multi-part message in MIME format.

--------------070404010201060604000708
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain; charset="utf-8"

Falsches =C3=9Cben von Xylophonmusik qu=C3=A4lt jeden gr=C3=B6=C3=9Feren Zwe=
rg.
--------------070404010201060604000708
Content-Transfer-Encoding: base64
Content-Type: text/plain; charset="utf-8"

RmFsc2NoZXMgw5xiZW4gdm9uIFh5bG9waG9ubXVzaWsgcXXDpGx0IGplZGVuIGdyw7bDn2VyZW4g
Wndlcmcu

--------------070404010201060604000708
Content-Transfer-Encoding: 8bit
Content-Type: text/plain; charset="iso-8859-1"

Falsches Üben von Xylophonmusik quält jeden größeren Zwerg.
--------------070404010201060604000708--

Download Chilkat MIME ActiveX

uses
    Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
    Dialogs, StdCtrls,
    CHILKATMIMELib_TLB,
    OleCtrls;

...

procedure TForm1.Button1Click(Sender: TObject);
var
mime: CHILKATMIMELib_TLB.IChilkatMime;
success: Integer;
part1: CHILKATMIMELib_TLB.IChilkatMime;
part2: CHILKATMIMELib_TLB.IChilkatMime;
part3: CHILKATMIMELib_TLB.IChilkatMime;

begin
mime := CoChilkatMime.Create();

success := mime.UnlockComponent('Anything for 30-day trial.');
if (success = 0) then
  begin
    Memo1.Lines.Add(mime.LastErrorText);
    Exit;
  end;

//  Load the sampleMime1.txt file into the MIME object.
//  (This file is available at http://www.chilkatsoft.com/testData/sampleMime1.txt )

success := mime.LoadMimeFile('sampleMime1.txt');
if (success = 0) then
  begin
    Memo1.Lines.Add(mime.LastErrorText);
    Exit;
  end;

//  The sampleMime1.txt is a MIME document with a top-level
//  multipart/mixed containing 3 sub-parts, each of which has the
//  same body text but with different content-transfer-encodings and
//  using different character encodings (utf-8 and iso-8859-1).

//  Calling mime.GetBodyEncoded or mime.GetBodyDecoded on the
//  top-level multipart/mixed MIME object will return an empty string.
//  It is because the "body" of a multipart MIME object is always empty.
//  A multipart MIME object contains sub-parts (each a MIME object),
//  and it is only the leaf-objects that can have non-empty bodies.

//  Get GetBodyDecoded method returns the body text decoded
//  from whatever the content-transfer-encoding may be, and
//  converted from whatever charset encoding might be used.
//  In this case, calling GetBodyDecoded on each of the three
//  sub-parts will return the same string.
//  To demonstrate:

part1 := mime.GetPart(0);
Memo1.Lines.Add(part1.GetBodyDecoded());

part2 := mime.GetPart(1);
Memo1.Lines.Add(part2.GetBodyDecoded());

part3 := mime.GetPart(2);
Memo1.Lines.Add(part3.GetBodyDecoded());

//  The GetBodyEncoded method will NOT decode from
//  whatever content-transfer-encoding is used.  However, it will
//  convert from whatever internal character encoding
//  may be used to return a string appropriate for the calling
//  programming language (for example, in .NET or any language
//  using ActiveX, all strings are Unicode..)
Memo1.Lines.Add(part1.GetBodyEncoded());
Memo1.Lines.Add(part2.GetBodyEncoded());
Memo1.Lines.Add(part3.GetBodyEncoded());


end;