Perl

Save All MIME Attachments to Files

Demonstrates the Chilkat Mime.PartsToFiles method, which recursively traverses the MIME tree and saves each part having a nonempty filename parameter to a directory. The first argument is the destination directory and the second is a StringTable that receives the saved filenames.

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

Background: This extracts every named attachment from a message in one call, walking the whole tree so it finds attachments nested inside multipart containers. It saves only parts that declare a filename — inline body parts without one are skipped — and reports what it wrote via the StringTable, which is handy for logging or follow-up processing. The destination directory must already exist.

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Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

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

# Recursively traverse the MIME tree and save each part that has a nonempty "filename" parameter
# to a directory.  The 1st argument is the destination directory and the 2nd is a StringTable
# that receives the saved filenames.
my $savedFiles = Chilkat2::StringTable->new;
$success = $mime->PartsToFiles('qa_output/attachments', $savedFiles);
if (!$success) {
    print $mime->LastErrorText, "\n";
    exit;
}

my $n = $savedFiles->Count;
print 'Saved ', $n, " files:\n";
for my $i (0 .. $n - 1) {
    my $name = $savedFiles->StringAt($i);
    if (!$savedFiles->LastMethodSuccess) {
        print $savedFiles->LastErrorText, "\n";
        exit;
    }

    print $name, "\n";
}