(DataFlex) FTP Non-Recursive Sync Directory (Download)

See more FTP Examples

Download files from the server that have filenames matchhing a pattern, and don't yet exist in a local directory.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-win32.pkg

Procedure Test
    Handle hoFtp
    Boolean iSuccess
    Integer iMode
    Variant vSb
    Handle hoSb
    Handle hoSt
    Integer iNumFiles
    Integer i
    String sRemoteFilename
    String sTemp1

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

    Get Create (RefClass(cComChilkatFtp2)) To hoFtp
    If (Not(IsComObjectCreated(hoFtp))) Begin
        Send CreateComObject of hoFtp
    End

    Set ComHostname Of hoFtp To "ftp.example.com"
    Set ComUsername Of hoFtp To "myUsername"
    Set ComPassword Of hoFtp To "myPassword"
    Set ComPort Of hoFtp To 21
    Set ComAuthTls Of hoFtp To True

    // Connect and login to the FTP server.
    Get ComConnect Of hoFtp To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoFtp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Change to the remote directory where the files are located.
    // This step is only necessary if the files are not in the root directory
    // of the FTP account.
    Get ComChangeRemoteDir Of hoFtp "qa" To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoFtp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Indicate that we only want to download files with filenames ending in ".txt"
    Set ComSyncMustMatch Of hoFtp To "*.txt"

    // Modes for synchronization are as follows:
    // mode=0: Download all files
    // mode=1: Download all files that do not exist on the local filesystem.
    // mode=2: Download newer or non-existant files.
    // mode=3: Download only newer files. If a file does not already exist on the local filesystem, it is not downloaded from the server.
    // mode=5: Download only missing files or files with size differences.
    // mode=6: Same as mode 5, but also download newer files.
    // mode=99: Do not download files, but instead delete remote files that do not exist locally.
    Move 1 To iMode

    // Download all files matching "*.txt" from the current remote ftp directory.
    // The files are downloaded into c:/temp/qa_output
    Get ComSyncLocalDir Of hoFtp "c:/temp/qa_output" iMode To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoFtp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // We can see what files were downloaded in the SyncedFiles property,
    // which lists the files one per line.
    Get ComSyncedFiles Of hoFtp To sTemp1
    Showln sTemp1

    // Perhaps we wish to delete the files we just downloaded from the server..
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSb
    If (Not(IsComObjectCreated(hoSb))) Begin
        Send CreateComObject of hoSb
    End
    Get ComSyncedFiles Of hoFtp To sTemp1
    Get ComAppend Of hoSb sTemp1 To iSuccess

    Get Create (RefClass(cComChilkatStringTable)) To hoSt
    If (Not(IsComObjectCreated(hoSt))) Begin
        Send CreateComObject of hoSt
    End
    Get pvComObject of hoSb to vSb
    Get ComAppendFromSb Of hoSt vSb To iSuccess

    Get ComCount Of hoSt To iNumFiles
    Move 0 To i

    While (i < iNumFiles)
        Get ComStringAt Of hoSt i To sRemoteFilename
        Showln "Deleting " sRemoteFilename " from the FTP server"
        Get ComDeleteRemoteFile Of hoFtp sRemoteFilename To iSuccess
        If (iSuccess <> True) Begin
            Get ComLastErrorText Of hoFtp To sTemp1
            Showln sTemp1
            Procedure_Return
        End

        Move (i + 1) To i
    Loop

    Get ComDisconnect Of hoFtp To iSuccess


End_Procedure