Dart

Build an EDIFACT Email Body

Demonstrates the Chilkat Email.SetEdifactBody method, a convenience that constructs the customary MIME headers and body for sending an EDIFACT message. It sets the body to the EDIFACT content, sets Content-Transfer-Encoding to Base64, sets Content-Type to application/EDIFACT (with a name attribute from the 2nd argument), and sets Content-Disposition to attachment (with a filename from the 3rd argument). The 4th argument is the charset the message is converted to before Base64 encoding. The subject, recipients, and FROM are left unchanged.

Background: EDIFACT is a long-standing international standard for Electronic Data Interchange (EDI) — structured business documents such as purchase orders (ORDERS) and invoices (INVOIC) exchanged between trading partners. Sending EDIFACT over email requires wrapping the payload in a specific set of MIME headers; SetEdifactBody handles that boilerplate so the message is formatted the way EDI systems expect.

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Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // Demonstrates the SetEdifactBody method, which builds a typical email for sending an
  // EDIFACT message.  It sets the body to the EDIFACT content, sets Content-Transfer-Encoding
  // to Base64, Content-Type to application/EDIFACT (with a name attribute), and
  // Content-Disposition to attachment (with a filename).  The fourth argument is the charset.

  final email = CkEmail();
  email.subject = 'EDIFACT ORDERS message';
  email.from = 'edi@example.com';
  email.addTo('Trading Partner', 'partner@example.com');

  // The EDIFACT message content (an ORDERS interchange, abbreviated here).
  final edi = 'UNA:+.? \'UNB+UNOB:1+SENDER+RECEIVER+260710:1200+1\'UNH+1+ORDERS:D:96A:UN\'BGM+220+ORD12345+9\'UNT+3+1\'UNZ+1+1\'';

  // Build the EDIFACT email body.
  email.setEdifactBody(edi, 'order.edi', 'order.edi', 'iso-8859-1');

  print(email.getMime());
}