Rust

Set a MIME Body from Transfer-Encoded Text

Demonstrates the Chilkat Mime.SetBodyFromEncoded method, which sets the body from already transfer-encoded text. The first argument is the encoding (base64 or quoted-printable) and the second is the encoded text.

Background: Sometimes you already hold content in its encoded form — a Base64 string from a database or another API — and re-decoding just to have Chilkat re-encode it is wasteful. This method stores the encoded text as-is and records the matching transfer encoding, so the body is correct without a needless round trip. Only the standard reversible encodings, Base64 and quoted-printable, are accepted.

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Rust


// Demonstrates the Mime.SetBodyFromEncoded method, which sets the body from already transfer-
// encoded text.  The 1st argument is the encoding ("base64" or "quoted-printable") and the 2nd is
// the encoded text.

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

mime.set_content_type("text/plain");

// The body is provided already Base64-encoded; Chilkat stores it without re-encoding.
let base64_body = "SGVsbG8sIHRoaXMgaXMgdGhlIGJvZHku".to_string();
if mime.set_body_from_encoded("base64", &base64_body).is_err() {
    println!("{}", mime.last_error_text());
    return;
}

// The decoded body is the original text.
let Ok(decoded) = mime.get_body_decoded() else {
    println!("{}", mime.last_error_text());
    return;
};

println!("{}", decoded);