Rust

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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Rust


// 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.

let mime = chilkat::Mime::new();

if mime.set_body_from_file("qa_data/photo.jpg").is_err() {
    println!("{}", mime.last_error_text());
    return;
}

// Append the serialized MIME bytes to a BinData.  Existing bytes are preserved.
let bd = chilkat::BinData::new();
if mime.get_mime_bd(&bd).is_err() {
    println!("{}", mime.last_error_text());
    return;
}

println!("Serialized {} bytes.", bd.num_bytes());