(SQL Server) Create a Zip Entirely in Memory

Demonstrates how to create a .zip from in-memory byte data and strings, and to write the .zip to an in-memory image.

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 @crypt int
    -- Use "Chilkat_9_5_0.Crypt2" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Crypt2', @crypt OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

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

    DECLARE @success int
    EXEC sp_OAMethod @zip, 'NewZip', @success OUT, 'test.zip'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @zip, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @crypt
        EXEC @hr = sp_OADestroy @zip
        RETURN
      END

    -- Add the bytes 0x00 0x01 0x02 0x03 ... 0x0F as a file in the .zip

    EXEC sp_OAMethod @crypt, 'Decode', @binFileData OUT, '000102030405060708090A0B0C0D0E0F', 'hex'
    DECLARE @entry int
    EXEC sp_OAMethod @zip, 'AppendData', @entry OUT, 'binaryData.dat', @binFileData
    EXEC @hr = sp_OADestroy @entry

    -- Add the string "Hello World!" to the .zip
    EXEC sp_OAMethod @zip, 'AppendString2', @entry OUT, 'helloWorld.txt', 'Hello World!', 'utf-8'
    EXEC @hr = sp_OADestroy @entry

    EXEC sp_OAMethod @zip, 'WriteToMemory', @zipFileInMemory OUT

    -- We could save these files to a file, and it is a valid .zip
    DECLARE @fac int
    -- Use "Chilkat_9_5_0.FileAccess" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.FileAccess', @fac OUT

    EXEC sp_OAMethod @fac, 'WriteEntireFile', @success OUT, 'test.zip', @zipFileInMemory
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @fac, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @crypt
        EXEC @hr = sp_OADestroy @zip
        EXEC @hr = sp_OADestroy @fac
        RETURN
      END


    PRINT 'Zip Created!'

    EXEC @hr = sp_OADestroy @crypt
    EXEC @hr = sp_OADestroy @zip
    EXEC @hr = sp_OADestroy @fac


END
GO