Rust

Set a MIME Body from a File

Demonstrates the Chilkat Mime.SetBodyFromFile method, which reads a local file and sets it as the body, choosing content headers from the filename extension. The only argument is the file path.

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 one-call way to turn a file into a MIME part: Chilkat reads the bytes and infers the Content-Type and transfer encoding from the extension — .jpg becomes image/jpeg with base64, .txt a text type, and so on. It is the natural building block for adding an attachment, usually followed by setting a Content-Disposition and filename.

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Rust


// Demonstrates the Mime.SetBodyFromFile method, which reads a local file and sets it as the body,
// choosing content headers based on the filename extension.  The only argument is the file path.

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

// The Content-Type and encoding are set from the ".jpg" extension (image/jpeg, base64).
if mime.set_body_from_file("qa_data/photo.jpg").is_err() {
    println!("{}", mime.last_error_text());
    return;
}

println!("Content-Type: {}", mime.content_type());
println!("Encoding: {}", mime.encoding());