Perl

Check if a MIME Entity is multipart/related

Demonstrates the Chilkat Mime.IsMultipartRelated method, which returns whether the Content-Type is exactly multipart/related. It takes no arguments.

Note: The file path is relative to the application's current working directory. Absolute paths may also be used. Supply the path to your own file.

Background: multipart/related signals that the parts belong together — typically an HTML body plus the inline images it references by Content-ID. Detecting it tells your code the non-primary parts are embedded resources, not standalone attachments to list.

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Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

# Demonstrates the Mime.IsMultipartRelated method, which returns whether the Content-Type is multipart/related.  It takes no arguments.

my $mime = Chilkat2::Mime->new;
my $success = $mime->LoadMimeFile('qa_data/multipart_message.eml');
if (!$success) {
    print $mime->LastErrorText, "\n";
    exit;
}

if ($mime->IsMultipartRelated()) {
    print "This is a multipart/related entity.\n";
} else {
    print "This is not multipart/related.\n";
}