SQL Server

Base64 Encode a File

_LANGUAGE_ to Base64 encode the contents of a file. SQL Server

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

    -- Get the contents of a file into a base64 encoded string:
    DECLARE @fac int
    EXEC @hr = sp_OACreate 'Chilkat.FileAccess', @fac OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @strBase64 nvarchar(4000)
    EXEC sp_OAMethod @fac, 'ReadBinaryToEncoded', @strBase64 OUT, 'c:/data/something.pdf', 'base64'
    EXEC sp_OAGetProperty @fac, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 <> 1
      BEGIN
        EXEC sp_OAGetProperty @fac, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @fac
        RETURN
      END

    -- Now write the string to a file:
    EXEC sp_OAMethod @fac, 'WriteEntireTextFile', @success OUT, 'c:/data/something_pdf_base64.txt', @strBase64, 'us-ascii', 0
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @fac, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @fac
        RETURN
      END


    PRINT 'Success!'

    EXEC @hr = sp_OADestroy @fac


END
GO