PowerBuilder

Get an FTP Listing Entry's Size (32-bit)

Demonstrates the Chilkat Ftp2.GetSize method, which returns the size in bytes of a cached directory-listing entry as a 32-bit integer. The only argument is a zero-based index. It returns -1 when the index is invalid or the size is unavailable.

Background: The size comes from the cached listing, so reading it for every entry costs no extra round trips. A 32-bit result cannot represent files past about 2 GB, so use GetSize64 (or GetSizeStr) when large files are possible. Directories often report no meaningful size and come back as -1, which is why the -1 case is worth handling rather than printing blindly.

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

li_Success = 0

//  Demonstrates the Ftp2.GetSize method, which returns the size in bytes of a cached
//  directory-listing entry as a 32-bit integer.  The only argument is a zero-based index.

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)

    //  GetSize returns -1 when the index is invalid or the size is unavailable (for example for a
    //  directory).  Use GetSize64 for files that may exceed 2 GB.
    li_FileSize = loo_Ftp.GetSize(i)
    Write-Debug ls_Name + "  " + string(li_FileSize) + " bytes"
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