Ruby

Get a Header Attribute of an Attachment

Demonstrates the Chilkat Email.GetAttachmentAttr method, which returns a header-field attribute value from a header field of the Nth attachment. The first argument is the zero-based attachment index, the second names a header field, and the third names an attribute within it. This example reads the filename attribute of the attachment's Content-Disposition header.

Background: A MIME header can have named parameters after its main value, such as Content-Type: text/plain; charset="utf-8"; name="notes.txt". Here charset and name are attributes. GetAttachmentAttr pulls out one named attribute from a chosen header of a specific attachment, sparing you from parsing the raw header string and dealing with quoting or ordering.

Chilkat Ruby Downloads

Download Chilkat for Ruby

Ruby

require 'chilkat'

#  Demonstrates the GetAttachmentAttr method, which returns a header-field attribute value
#  from a header field of the Nth attachment.  The first argument is the zero-based attachment
#  index, the second is the header field name, and the third is the attribute name.

email = Chilkat::CkEmail.new()
email.put_Subject("Attachment header attribute")

email.AddStringAttachment("notes.txt","Some notes.")

#  Get the "filename" attribute of the attachment's Content-Disposition header (index 0).
fname = email.getAttachmentAttr(0,"Content-Disposition","filename")
print "Attachment filename attribute: " + fname + "\n";