Visual FoxPro

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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LOCAL lnSuccess
LOCAL loSftp
LOCAL lnPort
LOCAL lcPassword
LOCAL lnBFollowLinks
LOCAL lnBIsHandle
LOCAL lnFileSize

lnSuccess = 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.

loSftp = CreateObject('Chilkat.SFtp')

*  Connect, authenticate, and initialize the SFTP subsystem.
lnPort = 22
lnSuccess = loSftp.Connect("sftp.example.com",lnPort)
IF (lnSuccess = 0) THEN
    ? loSftp.LastErrorText
    RELEASE loSftp
    CANCEL
ENDIF

*  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.
lcPassword = "mySshPassword"

lnSuccess = loSftp.AuthenticatePw("mySshLogin",lcPassword)
IF (lnSuccess = 0) THEN
    ? loSftp.LastErrorText
    RELEASE loSftp
    CANCEL
ENDIF

lnSuccess = loSftp.InitializeSftp()
IF (lnSuccess = 0) THEN
    ? loSftp.LastErrorText
    RELEASE loSftp
    CANCEL
ENDIF

*  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.
lnBFollowLinks = 1
lnBIsHandle = 0

lnFileSize = loSftp.GetFileSize32("subdir/report.pdf",lnBFollowLinks,lnBIsHandle)
IF (lnFileSize < 0) THEN
    ? loSftp.LastErrorText
    RELEASE loSftp
    CANCEL
ENDIF

? "File size: " + STR(lnFileSize) + " 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.

loSftp.Disconnect()

RELEASE loSftp