Get the Decoded MIME Body Bytes (BinData)

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Demonstrates the Chilkat Mime.GetBodyBd method, which replaces the contents of a BinData with the decoded body bytes of the current part. The only argument is the BinData. Base64 and quoted-printable are decoded; headers and boundaries are not included.

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 how you extract a part's actual content as bytes — the decoded payload of an attachment or an image, ready to hash, re-save, or hand to another API. Because it works in raw bytes it is the correct choice for binary parts, where a text decode would be wrong. Note it replaces the BinData contents rather than appending.

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    success := false

    mime := chilkat.NewMime()
    success = mime.LoadMimeFile("qa_data/message.eml")
    if success == false {
        fmt.Println(mime.LastErrorText())
        mime.DisposeMime()
        return
    }

    //  Replace the contents of a BinData with the decoded body bytes of the current part.  Base64 and
    //  quoted-printable are decoded; MIME headers and multipart boundaries are not included.
    bd := chilkat.NewBinData()
    success = mime.GetBodyBd(bd)
    if success == false {
        fmt.Println(mime.LastErrorText())
        mime.DisposeMime()
        bd.DisposeBinData()
        return
    }

    fmt.Println("Decoded body: ", bd.NumBytes(), " bytes.")

    mime.DisposeMime()
    bd.DisposeBinData()