(Xojo Plugin) Delete Local Files that Do Not Exist on the FTP Server

Demonstrates how to get a list of local files in a directory tree that do not exist on the FTP server.

Chilkat Xojo Plugin Download Xojo Plugin for Windows, Linux, Mac OS X, and ARM, ARM64

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Dim ftp As New Chilkat.Ftp2

ftp.Hostname = "ftp.example.com"
ftp.Username = "login"
ftp.Password = "password"

ftp.KeepSessionLog = True

// Connect and login to the FTP server.
Dim success As Boolean
success = ftp.Connect()
If (success <> True) Then
    System.DebugLog(ftp.LastErrorText)
    Return
End If

// Set the current remote directory to the root of
// the remote tree to be compared.
success = ftp.ChangeRemoteDir("abc123")
If (success <> True) Then
    System.DebugLog(ftp.LastErrorText)
    Return
End If

// Recursively descend the local directory tree
// and find the files that exist locally but not remotely.
// These are the files what would be uploaded via
// the SyncRemoteTree method call with mode = 1.
// (Mode 1 would upload all files that do not exist on the FTP server.)

// The actual uploading is avoided by setting the preview-only argument to True.
Dim mode As Int32
mode = 1
Dim descendTree As Boolean
descendTree = True
Dim previewOnly As Boolean
previewOnly = True
success = ftp.SyncRemoteTree2("/temp/abc123",mode,descendTree,previewOnly)
If (success <> True) Then
    System.DebugLog(ftp.LastErrorText)
    Return
End If

// The files what would've been uploaded are now available in the SyncPreview property,
// which contains a list of local file paths, one per line.
// A program can iterate over them like this:
Dim sa As New Chilkat.StringArray
sa.LoadFromText ftp.SyncPreview

Dim fac As New Chilkat.FileAccess

Dim numFiles As Int32
numFiles = sa.Count
Dim i As Int32
i = 0
Dim localFilePath As String
While (i < numFiles)
    localFilePath = sa.GetString(i)
    System.DebugLog(localFilePath)

    // An application can delete the file using Chilkat's file access object,
    // or it can choose to use the native file API available in the programming language:
    success = fac.FileDelete(localFilePath)
    If (success <> True) Then
        System.DebugLog("Failed to delete: " + localFilePath)
    End If

    i = i + 1
Wend

success = ftp.Disconnect()