PowerBuilder

Check if an FTP Listing Entry is a Directory

Demonstrates the Chilkat Ftp2.GetIsDirectory method, which returns whether a cached directory-listing entry is a directory. The only argument is a zero-based index. An invalid index returns false.

Background: Distinguishing directories from files is the first thing most listing code needs — to render a folder tree, to decide whether to recurse, or to apply different handling. This reads the type from the cached listing, so it is a local lookup rather than a server query. Reliability depends on the server's listing format conveying the type, which the common Unix and MLSD formats do.

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integer li_rc
integer li_Success
oleobject loo_Ftp
integer n
integer i
string ls_Name

li_Success = 0

//  Demonstrates the Ftp2.GetIsDirectory method, which returns whether a cached directory-listing
//  entry is a directory.  The only argument is a zero-based index into the current listing.

loo_Ftp = create oleobject
li_rc = loo_Ftp.ConnectToNewObject("Chilkat.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 = "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.
loo_Ftp.Password = "myPassword"

li_Success = loo_Ftp.Connect()
if li_Success = 0 then
    Write-Debug loo_Ftp.LastErrorText
    destroy loo_Ftp
    return
end if

li_Success = loo_Ftp.ChangeRemoteDir("public_html")
if li_Success = 0 then
    Write-Debug loo_Ftp.LastErrorText
    destroy loo_Ftp
    return
end if

//  GetDirCount retrieves the directory listing on the first call and returns the number of
//  entries.  A negative return indicates failure.
n = loo_Ftp.GetDirCount()
if n < 0 then
    Write-Debug loo_Ftp.LastErrorText
    destroy loo_Ftp
    return
end if

for i = 0 to n - 1
    ls_Name = loo_Ftp.GetFilename(i)
    if loo_Ftp.GetIsDirectory(i) then
        Write-Debug "[DIR]  " + ls_Name
    else
        Write-Debug "       " + ls_Name
    end if

next

li_Success = loo_Ftp.Disconnect()
if li_Success = 0 then
    Write-Debug loo_Ftp.LastErrorText
    destroy loo_Ftp
    return
end if



destroy loo_Ftp