Perl

Check if a MIME Part is Application Data

Demonstrates the Chilkat Mime.IsApplicationData method, which returns whether the Content-Type begins with application/. It takes no arguments and applies to the current part.

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: The application/ family covers everything that is not plain media or text — PDFs, Office documents, ZIP archives, JSON, and the S/MIME application/pkcs7-* types. This broad check is a quick way to flag "binary document" parts, though you will usually look at the specific subtype to decide how to handle each.

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Perl

use chilkat();

$success = 0;

#  Demonstrates the Mime.IsApplicationData method, which returns whether the Content-Type begins with application/.  It takes no arguments and applies to the current
#  part.  This example iterates the parts of a multipart message and reports which ones match.

$mime = chilkat::CkMime->new();
$success = $mime->LoadMimeFile("qa_data/multipart_message.eml");
if ($success == 0) {
    print $mime->lastErrorText() . "\r\n";
    exit;
}

$n = $mime->get_NumParts();
$part = chilkat::CkMime->new();

for ($i = 0; $i <= $n - 1; $i++) {
    $success = $mime->PartAt($i,$part);
    if ($success == 0) {
        print $mime->lastErrorText() . "\r\n";
        exit;
    }

    if ($part->IsApplicationData()) {
        print "Part " . $i . " (" . $part->contentType() . ") is application data." . "\r\n";
    }

}