Ruby

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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Ruby

require 'chilkat'

success = false

mime = Chilkat::CkMime.new()
success = mime.LoadMimeFile("qa_data/multipart_message.eml")
if (success == false)
    print mime.lastErrorText() + "\n";
    exit
end

#  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.
savedFiles = Chilkat::CkStringTable.new()
success = mime.PartsToFiles("qa_output/attachments",savedFiles)
if (success == false)
    print mime.lastErrorText() + "\n";
    exit
end

n = savedFiles.get_Count()
print "Saved " + n.to_s() + " files:" + "\n";

for i in 0 .. n - 1
    name = savedFiles.stringAt(i)
    if (savedFiles.get_LastMethodSuccess() == false)
        print savedFiles.lastErrorText() + "\n";
        exit
    end

    print name + "\n";
end