Delphi ActiveX

Parse MIME to get Binary Data (such as GIF, JPG, or any binary file)

See more MIME Examples

Demonstrates how to parse a MIME to get binary data. This example extracts the image data for a GIF image to an in-memory byte array, and also to a file.

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
EIQYEJwQCJQYCJwYCM6clL2Ee5wpGIwhEK0YANatpdalnHMYCKUhCJQYAKUYAM6Ec5QhCJwhCPfW
zu/Oxta1rb17a6UhAK0hAPe9rb2Ec7V7a71rUpwpCL0xCJwhAOfOxta9tcatpdallM6cjMaUhK1C
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--------------080707010302060306060800--

Delphi ActiveX

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Integer;
mime: TChilkatMime;
part2: TChilkatMime;
binaryData: Array of Byte;
fac: TCkFileAccess;

begin
success := 0;

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

mime := TChilkatMime.Create(Self);

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

success := mime.LoadMimeFile('sampleMime2.txt');
if (success = 0) then
  begin
    Memo1.Lines.Add(mime.LastErrorText);
    Exit;
  end;

// 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.

part2 := TChilkatMime.Create(Self);
success := mime.PartAt(1,part2.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(mime.LastErrorText);
    Exit;
  end;

// The GetBodyBinary method returns the binary bytes
// of the part's body, automatically decoded from whatever
// content-transfer-encoding might be used (such as base64).
binaryData := part2.GetBodyBinary();

// We now have the binary bytes of the GIF image in binaryData.
// Save it to a file.
fac := TCkFileAccess.Create(Self);
success := fac.WriteEntireFile('out1.gif',binaryData);
if (success = 0) then
  begin
    Memo1.Lines.Add(fac.LastErrorText);
    Exit;
  end;

// An easier way to save the body content to a file,
// assuming your application does not need to access
// the binary data in-memory, is to call SaveBody
success := part2.SaveBody('out2.gif');
if (success = 0) then
  begin
    Memo1.Lines.Add(part2.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Finished.');
end;