CkPython

Set a MIME Body, Preserving Content Headers

Demonstrates the Chilkat Mime.SetBody method, which sets the current part's body while preserving the existing content headers (Content-Type, charset, Content-Transfer-Encoding). The only argument is the body text; it is a void method.

Background: Unlike the SetBodyFrom... methods, which set both the content and the headers that describe it, SetBody replaces only the body text and leaves the existing Content-Type and encoding in place. That is what you want when the media type is already correct and you simply need to swap in new content — updating a templated part, for instance — without re-declaring its type.

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import sys
import chilkat

success = False

#  Demonstrates the Mime.SetBody method, which sets the current part's body while preserving the
#  existing content headers (Content-Type, charset, Content-Transfer-Encoding).  The only argument
#  is the body text.  It is a void method.

mime = chilkat.CkMime()

#  Establish the content headers first.
success = mime.SetBodyFromPlainText("initial")
if (success == False):
    print(mime.lastErrorText())
    sys.exit()

#  Replace just the body text, keeping the existing Content-Type and encoding.
mime.SetBody("This is the replacement body text.")

mimeText = mime.getMime()
if (mime.get_LastMethodSuccess() == False):
    print(mime.lastErrorText())
    sys.exit()

print(mimeText)