(SQL Server) FTP Iterate over Files in Directory Matching ListPattern

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Uses the ListPattern property to iterate over the files in a directory matching the pattern.

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

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    -- This example requires the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

    DECLARE @ftp int
    -- Use "Chilkat_9_5_0.Ftp2" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Ftp2', @ftp OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    EXEC sp_OASetProperty @ftp, 'Hostname', 'ftp.example.com'
    EXEC sp_OASetProperty @ftp, 'Username', 'my_login'
    EXEC sp_OASetProperty @ftp, 'Password', 'my_password'
    EXEC sp_OASetProperty @ftp, 'Port', 21
    EXEC sp_OASetProperty @ftp, 'AuthTls', 1

    DECLARE @success int
    EXEC sp_OAMethod @ftp, 'Connect', @success OUT
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @ftp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @ftp
        RETURN
      END

    -- Change to the "images" sub-directory located under our FTP account's home directory.
    EXEC sp_OAMethod @ftp, 'ChangeRemoteDir', @success OUT, 'images'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @ftp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @ftp
        RETURN
      END

    EXEC sp_OASetProperty @ftp, 'ListPattern', '*.png'

    -- Fetch the current remote directory contents by calling GetDirCount
    DECLARE @n int
    EXEC sp_OAMethod @ftp, 'GetDirCount', @n OUT
    IF @n < 0
      BEGIN
        EXEC sp_OAGetProperty @ftp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @ftp
        RETURN
      END

    DECLARE @i int
    SELECT @i = 0
    DECLARE @filename nvarchar(4000)

    DECLARE @sbLocalPath int
    -- Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbLocalPath OUT

    WHILE @i < @n
      BEGIN
        EXEC sp_OAMethod @ftp, 'GetFilename', @filename OUT, @i

        PRINT @filename

        -- Download this file.
        EXEC sp_OAMethod @sbLocalPath, 'SetString', @success OUT, 'qa_output/'
        EXEC sp_OAMethod @sbLocalPath, 'Append', @success OUT, @filename
        EXEC sp_OAMethod @sbLocalPath, 'GetAsString', @sTmp0 OUT
        EXEC sp_OAMethod @ftp, 'GetFile', @success OUT, @filename, @sTmp0
        IF @success <> 1
          BEGIN
            EXEC sp_OAGetProperty @ftp, 'LastErrorText', @sTmp0 OUT
            PRINT @sTmp0
            EXEC @hr = sp_OADestroy @ftp
            EXEC @hr = sp_OADestroy @sbLocalPath
            RETURN
          END

        SELECT @i = @i + 1
      END

    EXEC @hr = sp_OADestroy @ftp
    EXEC @hr = sp_OADestroy @sbLocalPath


END
GO