CkPython

Serialize MIME to BinData

Demonstrates the Chilkat Mime.GetMimeBd method, which serializes the complete MIME entity and appends its bytes to a BinData. The only argument is the BinData; existing bytes are preserved.

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 is the byte-exact serializer — the right choice when the MIME carries binary content such as an image or an 8-bit-encoded part, where routing the output through a text string could corrupt it. The result is a faithful byte stream you can write to a file, transmit, or hash. It pairs with LoadMimeBd for lossless round-tripping of binary MIME.

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import sys
import chilkat

success = False

#  Demonstrates the Mime.GetMimeBd method, which serializes the complete MIME entity and appends
#  its bytes to a BinData.  The only argument is the BinData.  Use this when arbitrary binary body
#  bytes must not pass through a text string.

mime = chilkat.CkMime()

success = mime.SetBodyFromFile("qa_data/photo.jpg")
if (success == False):
    print(mime.lastErrorText())
    sys.exit()

#  Append the serialized MIME bytes to a BinData.  Existing bytes are preserved.
bd = chilkat.CkBinData()
success = mime.GetMimeBd(bd)
if (success == False):
    print(mime.lastErrorText())
    sys.exit()

print("Serialized " + str(bd.get_NumBytes()) + " bytes.")