Visual FoxPro

SFTP Get Size of File on Server

See more SFTP Examples

Demonstrates how to get the size of an existing file on the server. Visual FoxPro

LOCAL lnSuccess
LOCAL loSftp
LOCAL lcHostname
LOCAL lnPort
LOCAL lnBFollowLinks
LOCAL lnBIsHandle
LOCAL lnFileSize
LOCAL lcFileSizeStr
LOCAL lcHandle

lnSuccess = 0

* This example assumes the Chilkat API to have been previously unlocked.
* See Global Unlock Sample for sample code.

loSftp = CreateObject('Chilkat.SFtp')

* Set some timeouts, in milliseconds:
loSftp.ConnectTimeoutMs = 5000
loSftp.IdleTimeoutMs = 10000

* Connect to the SSH server.  
* The standard SSH port = 22
* The hostname may be a hostname or IP address.
lcHostname = "sftp.example.com"
lnPort = 22
lnSuccess = loSftp.Connect(lcHostname,lnPort)
IF (lnSuccess <> 1) THEN
    ? loSftp.LastErrorText
    RELEASE loSftp
    CANCEL
ENDIF

* Authenticate with the SSH server.  Chilkat SFTP supports
* both password-based authenication as well as public-key
* authentication.  This example uses password authenication.
lnSuccess = loSftp.AuthenticatePw("myLogin","myPassword")
IF (lnSuccess <> 1) THEN
    ? loSftp.LastErrorText
    RELEASE loSftp
    CANCEL
ENDIF

* After authenticating, the SFTP subsystem must be initialized:
lnSuccess = loSftp.InitializeSftp()
IF (lnSuccess <> 1) THEN
    ? loSftp.LastErrorText
    RELEASE loSftp
    CANCEL
ENDIF

* Assuming we know the file size won't be too large, we get the size as a 32-bit integer.
* For SFTP, the remote file path is always either a path relative to the HOME directory of the user account, or an absolute path on the server.
lnBFollowLinks = 1
lnBIsHandle = 0
lnFileSize = loSftp.GetFileSize32("someDir/someFile.dat",lnBFollowLinks,lnBIsHandle)
IF (lnFileSize < 0) THEN
    ? loSftp.LastErrorText
    RELEASE loSftp
    CANCEL
ENDIF

? "file size = " + STR(lnFileSize)

* If the file size might be too large for a 32-bit signed integer, then get the size as a decimal string.
* You can convert the string to a 64-bit integer in your programming language.
lcFileSizeStr = loSftp.GetFileSizeStr("someDir/someFile.dat",lnBFollowLinks,lnBIsHandle)
IF (loSftp.LastMethodSuccess = 0) THEN
    ? loSftp.LastErrorText
    RELEASE loSftp
    CANCEL
ENDIF

? "file size = " + lcFileSizeStr

* You can alternatively get the size with an open file handle.
lcHandle = loSftp.OpenFile("someDir/someFile.dat","readOnly","openExisting")
IF (loSftp.LastMethodSuccess <> 1) THEN
    ? loSftp.LastErrorText
    RELEASE loSftp
    CANCEL
ENDIF

* Get the size using the handle.
lnBIsHandle = 1
lnFileSize = loSftp.GetFileSize32("someDir/someFile.dat",lnBFollowLinks,lnBIsHandle)
IF (lnFileSize < 0) THEN
    ? loSftp.LastErrorText
    RELEASE loSftp
    CANCEL
ENDIF

? "file size = " + STR(lnFileSize)

* -----------------------------------------------------------------------------
* Don't forget to close the file handle.
* Otherwise open handles will accumulate on the server until eventually a limit
* is reached and the server will fail on a call to OpenFile.
* -----------------------------------------------------------------------------

* Close the file.
lnSuccess = loSftp.CloseHandle(lcHandle)
IF (lnSuccess <> 1) THEN
    ? loSftp.LastErrorText
    RELEASE loSftp
    CANCEL
ENDIF

RELEASE loSftp