PowerBuilder

Count Files in a Remote FTP Directory

Demonstrates the Chilkat Ftp2.GetDirCount method, which returns the number of files and directories in the current remote directory. It takes no arguments; the first call retrieves the listing, and the count reflects the case-insensitive ListPattern filter. A negative return indicates failure.

Background: GetDirCount is the entry point to Chilkat's index-based directory API: its first call fetches the listing for the current directory into a cache, and the returned count establishes the valid index range (0 through count - 1) for the accessor methods that read names, sizes, and attributes. The ListPattern property narrows the listing to matching names before counting, which is how you list, say, only *.html without filtering in your own code.

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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.GetDirCount method, which returns the number of files and directories in
//  the current remote directory's listing.  It takes no arguments.  The first call retrieves the
//  listing; the count reflects the case-insensitive ListPattern filter.

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

//  Optionally filter the listing with a wildcard pattern.  "*" (the default) matches everything.
loo_Ftp.ListPattern = "*.html"

n = loo_Ftp.GetDirCount()
if n < 0 then
    Write-Debug loo_Ftp.LastErrorText
    destroy loo_Ftp
    return
end if

Write-Debug "Matching entries: " + string(n)

//  The count defines the valid index range 0 through n-1 for the indexed accessor methods.

for i = 0 to n - 1
    ls_Name = loo_Ftp.GetFilename(i)
    Write-Debug ls_Name
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