Rust

Write Text to a Remote SFTP File (Sequential)

Demonstrates the Chilkat SFtp.WriteFileText method, which encodes text using a charset and writes it at the current sequential write position of an open handle. The arguments are the handle, the charset, and the text.

Background: Chilkat tracks a write position per handle, so successive WriteFileText calls append naturally — the pattern for building a file a piece at a time, such as writing rows to a report. Opening with openOrCreate starts writing at the current end of the file. The charset determines the bytes actually stored, which matters whenever the text contains non-ASCII characters.

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Rust


// Demonstrates the SFtp.WriteFileText method, which encodes text and writes it at the current
// sequential write position of an open handle.  The 1st argument is the handle, the 2nd is the
// charset, and the 3rd is the text.

let sftp = chilkat::SFtp::new();

// Connect, authenticate, and initialize the SFTP subsystem.
let port = 22;
if sftp.connect("sftp.example.com", port).is_err() {
    println!("{}", sftp.last_error_text());
    return;
}

// 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.
let password = "mySshPassword".to_string();

if sftp.authenticate_pw("mySshLogin", &password).is_err() {
    println!("{}", sftp.last_error_text());
    return;
}

if sftp.initialize_sftp().is_err() {
    println!("{}", sftp.last_error_text());
    return;
}

// Open (creating/truncating) the remote file for writing.
let Ok(handle) = sftp.open_file("subdir/notes.txt", "writeOnly", "createTruncate") else {
    println!("{}", sftp.last_error_text());
    return;
};

// Write text as UTF-8.  Successive writes continue from where the previous write ended.
if sftp.write_file_text(&handle, "utf-8", "First line.\n").is_err() {
    println!("{}", sftp.last_error_text());
    return;
}

if sftp.write_file_text(&handle, "utf-8", "Second line.\n").is_err() {
    println!("{}", sftp.last_error_text());
    return;
}

if sftp.close_handle(&handle).is_err() {
    println!("{}", sftp.last_error_text());
    return;
}

println!("Wrote text file.");

sftp.disconnect();