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(PowerBuilder) 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 ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Ftp
integer li_Success
integer li_Mode
integer li_DescendTree
integer li_PreviewOnly
oleobject loo_Sa
oleobject loo_Fac
integer li_NumFiles
integer i
string ls_LocalFilePath

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

loo_Ftp = create oleobject
li_rc = loo_Ftp.ConnectToNewObject("Chilkat_9_5_0.Ftp2")
if li_rc < 0 then
    destroy loo_Ftp
    MessageBox("Error","Connecting to COM object failed")
    return
end if

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

loo_Ftp.KeepSessionLog = 1

// Connect and login to the FTP server.
li_Success = loo_Ftp.Connect()
if li_Success <> 1 then
    Write-Debug loo_Ftp.LastErrorText
    destroy loo_Ftp
    return
end if

// Set the current remote directory to the root of
// the remote tree to be compared.
li_Success = loo_Ftp.ChangeRemoteDir("abc123")
if li_Success <> 1 then
    Write-Debug loo_Ftp.LastErrorText
    destroy loo_Ftp
    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 1.
li_Mode = 1
li_DescendTree = 1
li_PreviewOnly = 1
li_Success = loo_Ftp.SyncRemoteTree2("/temp/abc123",li_Mode,li_DescendTree,li_PreviewOnly)
if li_Success <> 1 then
    Write-Debug loo_Ftp.LastErrorText
    destroy loo_Ftp
    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:
loo_Sa = create oleobject
li_rc = loo_Sa.ConnectToNewObject("Chilkat_9_5_0.StringArray")

loo_Sa.LoadFromText(loo_Ftp.SyncPreview)

loo_Fac = create oleobject
li_rc = loo_Fac.ConnectToNewObject("Chilkat_9_5_0.FileAccess")

li_NumFiles = loo_Sa.Count
i = 0

do while (i < li_NumFiles)
    ls_LocalFilePath = loo_Sa.GetString(i)
    Write-Debug ls_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:
    li_Success = loo_Fac.FileDelete(ls_LocalFilePath)
    if li_Success <> 1 then
        Write-Debug "Failed to delete: " + ls_LocalFilePath
    end if

    i = i + 1
loop

li_Success = loo_Ftp.Disconnect()


destroy loo_Ftp
destroy loo_Sa
destroy loo_Fac

 

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