(SQL Server) Controlling Paths of Files Added to Zip

When appending files to a .zip, it can be difficult to get the paths exactly as you want them. This example describes a way that you can control the path information when adding a single file at a time to a .zip.

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

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

    -- Intialize the zip object by calling NewZip.
    DECLARE @success int
    EXEC sp_OAMethod @zip, 'NewZip', @success OUT, 'myZip.zip'

    -- Add a reference to a file on disk to the zip object.
    -- (When appending files to a zip, the files are not actually
    -- read into memory.  References to the file(s) are added.
    -- When WriteZip is called, the referenced files are streamed in
    -- and compressed to the .zip.)
    DECLARE @saveExtraPath int
    SELECT @saveExtraPath = 0
    EXEC sp_OAMethod @zip, 'AppendOneFileOrDir', @success OUT, '/temp/a/hamlet.xml', @saveExtraPath
    -- For brevity, this example will not check the return status...

    -- The saveExtraPath argument, if set, will cause the path information
    -- passed in the 1st argument to be saved in the .zip.

    -- To add "a/hamlet.xml", do this:
    EXEC sp_OASetProperty @zip, 'AppendFromDir', '/temp'
    --  The saveExtraPath argument, if set, will cause the path information
    --  passed in the 1st argument to be saved in the .zip.     But the path in AppendFromDir is
    --  not added to that path saved in the .zip.     If there is a path in AppendFromDir then the
    --  path in the 1st argument must be relative, not preceded by a drive or \.
    SELECT @saveExtraPath = 1
    EXEC sp_OAMethod @zip, 'AppendOneFileOrDir', @success OUT, 'a/hamlet.xml', @saveExtraPath

    -- To add "temp/a/hamlet.xml", do this:
    EXEC sp_OASetProperty @zip, 'AppendFromDir', '/'
    SELECT @saveExtraPath = 1
    EXEC sp_OAMethod @zip, 'AppendOneFileOrDir', @success OUT, 'temp/a/hamlet.xml', @saveExtraPath

    -- The zip written here will contain hamlet.xml three times,
    -- each with a different relative path.
    EXEC sp_OAMethod @zip, 'WriteZipAndClose', @success OUT

    EXEC @hr = sp_OADestroy @zip


END
GO