Lua

Sync a Single FTP Directory Down to Local

Demonstrates the Chilkat Ftp2.SyncLocalDir method, which synchronizes files from the current remote directory into a local directory without descending into subdirectories. The first argument is the local root and the second is the download mode.

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: This is the single-directory form of SyncLocalTree, using the same mode numbers but touching only the top level. It is the right choice when subdirectories are irrelevant or handled separately — for instance pulling new files from one drop folder without recursing into archive subfolders that would waste time to scan.

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Lua

local chilkat = require("chilkat")

-- Demonstrates the Ftp2.SyncLocalDir method, which synchronizes files from the current remote
-- directory into a local directory WITHOUT descending into subdirectories.  The 1st argument is
-- the local root and the 2nd is the download mode.

local ftp = chilkat.Ftp2.new()

ftp.hostname = "ftp.example.com"
ftp.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.password = "myPassword"

local success = ftp:connect()
if not success then
    print(ftp.last_error_text)
    return
end

success = ftp:change_remote_dir("public_html")
if not success then
    print(ftp.last_error_text)
    return
end

-- This is the single-directory (non-recursive) form of SyncLocalTree; it uses the same modes.
--   0 = all selected files
--   1 = files missing locally
--   2 = missing locally, or newer on the server
--   3 = only files that exist locally and are newer on the server
--   5 = missing locally, or a different size
--   6 = missing, different size, or newer on the server
--  99 = do not download; delete local... (see docs)

local mode = 2
success = ftp:sync_local_dir("qa_output/site", mode)
if not success then
    print(ftp.last_error_text)
    return
end

print("Remote directory synced to local (top level only).")

success = ftp:disconnect()
if not success then
    print(ftp.last_error_text)
    return
end