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(SQL Server) Unzip Selected Files from a Zip ArchiveDemonstrates how to iterate over the files contained within a .zip and unzip specific files. Note: This example requires Chilkat v11.0.0 or greater.
-- 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 -- This example requires the Chilkat API to have been previously unlocked. -- See Global Unlock Sample for sample code. DECLARE @zip int EXEC @hr = sp_OACreate 'Chilkat.Zip', @zip OUT IF @hr <> 0 BEGIN PRINT 'Failed to create ActiveX component' RETURN END EXEC sp_OAMethod @zip, 'OpenZip', @success OUT, 'my_files.zip' IF @success = 0 BEGIN EXEC sp_OAGetProperty @zip, 'LastErrorText', @sTmp0 OUT PRINT @sTmp0 EXEC @hr = sp_OADestroy @zip RETURN END DECLARE @unzipDir nvarchar(4000) SELECT @unzipDir = '/temp/unzipDir' -- Get the number of files and directories in the .zip DECLARE @n int EXEC sp_OAGetProperty @zip, 'NumEntries', @n OUT DECLARE @entry int EXEC @hr = sp_OACreate 'Chilkat.ZipEntry', @entry OUT DECLARE @i int SELECT @i = 0 WHILE @i < @n BEGIN EXEC sp_OAMethod @zip, 'EntryAt', @success OUT, @i, @entry EXEC sp_OAGetProperty @entry, 'IsDirectory', @iTmp0 OUT IF @iTmp0 = 0 BEGIN -- (the filename may include a path) EXEC sp_OAGetProperty @entry, 'FileName', @sTmp0 OUT PRINT @sTmp0 -- Your application may choose to unzip this entry -- based on the filename. -- If the entry should be unzipped, then call Extract(unzipDir) EXEC sp_OAMethod @entry, 'Extract', @success OUT, @unzipDir IF @success = 0 BEGIN EXEC sp_OAGetProperty @entry, 'LastErrorText', @sTmp0 OUT PRINT @sTmp0 EXEC @hr = sp_OADestroy @zip EXEC @hr = sp_OADestroy @entry RETURN END END SELECT @i = @i + 1 END EXEC @hr = sp_OADestroy @zip EXEC @hr = sp_OADestroy @entry END GO |
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