PowerBuilder

Get a Remote File's Size (32-bit)

Demonstrates the Chilkat SFtp.GetFileSize32 method, which returns a remote file's size in bytes as a 32-bit integer. The arguments are the remote path (or handle), whether symbolic links are followed, and whether the first argument is a handle.

Background: A 32-bit signed integer tops out near 2 GB, so this is fine for ordinary files but will misreport or fail for larger ones. When a file might exceed that, use GetFileSizeStr, which returns the size as a decimal string and cannot overflow. The two boolean arguments are shared by all the attribute getters: the first follows symbolic links to their target, and the second says whether you passed a path or an open handle.

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integer li_rc
integer li_Success
oleobject loo_Sftp
integer li_Port
string ls_Password
integer li_BFollowLinks
integer li_BIsHandle
integer li_FileSize

li_Success = 0

//  Demonstrates the SFtp.GetFileSize32 method, which returns a remote file's size in bytes as a
//  32-bit integer.  The 1st argument is the remote path (or handle), the 2nd selects whether
//  symbolic links are followed, and the 3rd indicates whether the 1st argument is a handle.

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

//  Connect, authenticate, and initialize the SFTP subsystem.
li_Port = 22
li_Success = loo_Sftp.Connect("sftp.example.com",li_Port)
if li_Success = 0 then
    Write-Debug loo_Sftp.LastErrorText
    destroy loo_Sftp
    return
end if

//  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.
ls_Password = "mySshPassword"

li_Success = loo_Sftp.AuthenticatePw("mySshLogin",ls_Password)
if li_Success = 0 then
    Write-Debug loo_Sftp.LastErrorText
    destroy loo_Sftp
    return
end if

li_Success = loo_Sftp.InitializeSftp()
if li_Success = 0 then
    Write-Debug loo_Sftp.LastErrorText
    destroy loo_Sftp
    return
end if

//  The 2nd argument (bFollowLinks) selects whether a symbolic link is followed to its target.
//  The 3rd argument (bIsHandle) is 0 here because the 1st argument is a path, not an
//  open handle.
li_BFollowLinks = 1
li_BIsHandle = 0

li_FileSize = loo_Sftp.GetFileSize32("subdir/report.pdf",li_BFollowLinks,li_BIsHandle)
if li_FileSize < 0 then
    Write-Debug loo_Sftp.LastErrorText
    destroy loo_Sftp
    return
end if

Write-Debug "File size: " + string(li_FileSize) + " bytes"

//  Note: For files that may exceed 2 GB, use GetFileSizeStr (returns a decimal string) instead,
//  because the value can overflow a 32-bit integer.

loo_Sftp.Disconnect()


destroy loo_Sftp