Perl

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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use strict;
use warnings;
use Chilkat2;

# 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).

my $ftp = Chilkat2::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');

my $success = $ftp->Connect();
if (!$success) {
    print $ftp->LastErrorText, "\n";
    exit;
}

$success = $ftp->ChangeRemoteDir('public_html');
if (!$success) {
    print $ftp->LastErrorText, "\n";
    exit;
}

#   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

my $mode = 5;

# Descend into subdirectories.
my $bDescend = 1;

# Preview only: determine what WOULD be uploaded without transferring anything.  The results are
# available via the SyncPreview property.
my $bPreviewOnly = 1;

$success = $ftp->SyncRemoteTree2('qa_data/site', $mode, $bDescend, $bPreviewOnly);
if (!$success) {
    print $ftp->LastErrorText, "\n";
    exit;
}

# SyncPreview lists the files that would be uploaded.
print $ftp->SyncPreview, "\n";

$success = $ftp->Disconnect();
if (!$success) {
    print $ftp->LastErrorText, "\n";
    exit;
}