(PureBasic) Directory Existence Check

How to test if a directory exists on an FTP server.

A good way to check to see if a directory already exists is to try to "cd" to that remote directory by calling ChangeRemoteDir. If it succeeds, then the directory exists. If not, then it does not exist. An alternative method is to set the ListPattern = "*" and then iterate over the files/directories, looking for the directory.

Chilkat PureBasic Module Download Chilkat PureBasic Module

IncludeFile "CkFtp2.pb"

Procedure ChilkatExample()

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

    ftp.i = CkFtp2::ckCreate()
    If ftp.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkFtp2::setCkHostname(ftp, "ftp.example.com")
    CkFtp2::setCkUsername(ftp, "login")
    CkFtp2::setCkPassword(ftp, "password")

    ; Connect and login to the FTP server.
    success.i = CkFtp2::ckConnect(ftp)
    If success <> 1
        Debug CkFtp2::ckLastErrorText(ftp)
        CkFtp2::ckDispose(ftp)
        ProcedureReturn
    EndIf

    ; Does the "temp" directory exist?
    dirExists.i
    dirExists = CkFtp2::ckChangeRemoteDir(ftp,"/temp")
    If dirExists = 1
        Debug "Yes, the temp directory exists."
        ;  Yes, it exists. Restore the current remote dir:
        success = CkFtp2::ckChangeRemoteDir(ftp,"..")
        If success <> 1
            Debug CkFtp2::ckLastErrorText(ftp)
            CkFtp2::ckDispose(ftp)
            ProcedureReturn
        EndIf

    EndIf

    ; Alternatively, you may set the ListPattern = "*" and 
    ;  look for the directory:
    CkFtp2::setCkListPattern(ftp, "*")

    i.i
    n.i
    n = CkFtp2::ckGetDirCount(ftp)
    If n < 0
        ; Failed to get directory listing based on ListPattern
        Debug CkFtp2::ckLastErrorText(ftp)
        CkFtp2::ckDispose(ftp)
        ProcedureReturn
    EndIf

    If n > 0
        For i = 0 To n - 1
            isDir.i
            isDir = CkFtp2::ckGetIsDirectory(ftp,i)
            If isDir = 1
                fname.s
                fname = CkFtp2::ckGetFilename(ftp,i)
                If fname = "temp"
                    Debug "Found temp directory!"
                    success = CkFtp2::ckDisconnect(ftp)
                    CkFtp2::ckDispose(ftp)
                    ProcedureReturn
                EndIf

            EndIf

        Next
    EndIf

    success = CkFtp2::ckDisconnect(ftp)


    CkFtp2::ckDispose(ftp)


    ProcedureReturn
EndProcedure