Rust

Control ASCII Download Line Endings (CrlfMode)

Demonstrates the CrlfMode property, which controls line-ending conversion when downloading in ASCII transfer mode: 0 leaves them as received, 1 converts to CRLF, 2 to LF, and 3 to CR.

Background: When you deliberately download text in ASCII mode, CrlfMode lets you force the saved file's line endings to a specific convention — CRLF for Windows tools, LF for Unix — regardless of what the server sends. It applies only in ASCII mode, so pair it with SetTypeAscii; in the recommended default binary mode, bytes are preserved verbatim and this setting has no effect. Reserve ASCII mode (and this property) for the rare case where line-ending normalization of text is actually wanted.

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Rust


let ftp = chilkat::Ftp2::new();

ftp.set_hostname("ftp.example.com");
ftp.set_username("myFtpLogin");

// Normally you would not hard-code the password in source.  You should instead obtain it
// from an interactive prompt, environment variable, or a secrets vault.
ftp.set_password("myPassword");

if ftp.connect().is_err() {
    println!("{}", ftp.last_error_text());
    return;
}

// CrlfMode controls line-ending conversion for ASCII-mode downloads:
//   0 = leave line endings as received (default)
//   1 = convert to CRLF
//   2 = convert to LF
//   3 = convert to CR
// Convert a downloaded text file's line endings to CRLF (useful when saving for Windows).
ftp.set_crlf_mode(1);

// CrlfMode applies only in ASCII transfer mode.
if ftp.set_type_ascii().is_err() {
    println!("{}", ftp.last_error_text());
    return;
}

if ftp.get_file("public_html/readme.txt", "qa_output/readme.txt").is_err() {
    println!("{}", ftp.last_error_text());
    return;
}

println!("Downloaded with CRLF line endings.");

if ftp.disconnect().is_err() {
    println!("{}", ftp.last_error_text());
    return;
}