Visual Basic 6.0

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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Visual Basic 6.0

Dim success As Long
success = 0

'  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).

Dim ftp As New ChilkatFtp2

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"

success = ftp.Connect()
If (success = 0) Then
    Debug.Print ftp.LastErrorText
    Exit Sub
End If

success = ftp.ChangeRemoteDir("public_html")
If (success = 0) Then
    Debug.Print ftp.LastErrorText
    Exit Sub
End If

'    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

Dim mode As Long
mode = 5

'  Descend into subdirectories.
Dim bDescend As Long
bDescend = 1

'  Preview only: determine what WOULD be uploaded without transferring anything.  The results are
'  available via the SyncPreview property.
Dim bPreviewOnly As Long
bPreviewOnly = 1

success = ftp.SyncRemoteTree2("qa_data/site",mode,bDescend,bPreviewOnly)
If (success = 0) Then
    Debug.Print ftp.LastErrorText
    Exit Sub
End If

'  SyncPreview lists the files that would be uploaded.
Debug.Print ftp.SyncPreview

success = ftp.Disconnect()
If (success = 0) Then
    Debug.Print ftp.LastErrorText
    Exit Sub
End If