Tcl

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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Tcl


load ./chilkat.dll

set success 0

#  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.

set mime [new_CkMime]

set success [CkMime_SetBodyFromFile $mime "qa_data/photo.jpg"]
if {$success == 0} then {
    puts [CkMime_lastErrorText $mime]
    delete_CkMime $mime
    exit
}

#  Append the serialized MIME bytes to a BinData.  Existing bytes are preserved.
set bd [new_CkBinData]

set success [CkMime_GetMimeBd $mime $bd]
if {$success == 0} then {
    puts [CkMime_lastErrorText $mime]
    delete_CkMime $mime
    delete_CkBinData $bd
    exit
}

puts "Serialized [CkBinData_get_NumBytes $bd] bytes."

delete_CkMime $mime
delete_CkBinData $bd