Rust

Sync a Local Tree Up with Preview and Traversal Control

Demonstrates the Chilkat Ftp2.SyncRemoteTree2 method, which uploads a local tree to the current remote directory with extra controls. The arguments are the local root, the upload mode, whether to descend into subdirectories, and whether to run preview-only. In preview mode the results are available via the SyncPreview property.

Note: The local 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: The preview flag is what makes this valuable: run it first to see exactly which files would be uploaded — without transferring anything — then run it again for real once the plan looks right. That dry-run step is a strong safeguard before a large or destructive-looking sync. The descend flag lets you limit the operation to the top level, and the mode is the same set of upload rules as SyncRemoteTree.

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// Demonstrates the Ftp2.SyncRemoteTree2 method, which uploads a local tree to the current remote
// directory with extra traversal and preview controls.  The 1st argument is the local root, the
// 2nd is the upload mode, the 3rd selects whether to descend into subdirectories, and the 4th
// selects preview-only (no actual transfers).

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;
}

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

//   0 = all selected files
//   1 = files missing on the server
//   2 = missing, or newer locally
//   3 = only files that exist remotely and are newer locally
//   4 = missing, or a different size
//   5 = missing, different size, or newer locally

let mode = 5;

// Descend into subdirectories.
let b_descend = true;

// Preview only: determine what WOULD be uploaded without transferring anything.  The results are
// available via the SyncPreview property.
let b_preview_only = true;

if ftp.sync_remote_tree2("qa_data/site", mode, b_descend, b_preview_only).is_err() {
    println!("{}", ftp.last_error_text());
    return;
}

// SyncPreview lists the files that would be uploaded.
println!("{}", ftp.sync_preview());

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