CkPython

Set a MIME Body from Binary Bytes (BinData)

Demonstrates the Chilkat Mime.SetBodyBd method, which sets the decoded body bytes from a BinData, changes the transfer encoding to base64, and preserves the bytes exactly. The only argument is the BinData.

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 direct way to put arbitrary binary content into a part from memory — a generated image, a decrypted blob — without a temporary file. Chilkat base64-encodes it so the bytes survive text-based transports unchanged. Note it does not set a Content-Type or disposition, so assign those yourself to describe what the bytes are.

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import sys
import chilkat

success = False

#  Demonstrates the Mime.SetBodyBd method, which sets the decoded body bytes from a BinData,
#  changes the transfer encoding to base64, and preserves the bytes exactly.  The only argument is
#  the BinData.

#  Put the binary body bytes into a BinData.
bd = chilkat.CkBinData()
success = bd.LoadFile("qa_data/photo.jpg")
if (success == False):
    print(bd.lastErrorText())
    sys.exit()

mime = chilkat.CkMime()

#  Set a Content-Type for the binary content (SetBodyBd does not set one itself).
mime.put_ContentType("image/jpeg")

success = mime.SetBodyBd(bd)
if (success == False):
    print(mime.lastErrorText())
    sys.exit()

print("Body set from " + str(bd.get_NumBytes()) + " bytes.")