[Win32utils-devel] Interest in win32-installer
Daniel.Berger at qwest.com
Wed May 28 15:35:52 EDT 2008
> -----Original Message-----
> From: win32utils-devel-bounces at rubyforge.org
> [mailto:win32utils-devel-bounces at rubyforge.org] On Behalf Of
> Paul Nasrat
> Sent: Monday, May 26, 2008 10:37 AM
> To: win32utils-devel at rubyforge.org
> Subject: [Win32utils-devel] Interest in win32-installer
> I was wondering if people would be interested in wrapping
> msi.dll functionality,
> I've started writing a small library to enable enumeration of
> products installed via Windows Installer using win32api (I
> know I can also query via win32ole to win32_product but I
> don't seem to get all the properties that are in msi.h).
I'm curious which properties you don't get. I did notice that there are
actually a few product related WMI classes.
> It's a little messy, and I've not got far as I'm pretty new
> at ruby and win32 programming coming from mostly a
> python/*nix background, so I thought I'd try to get some
> early feedback. It's inspired by psmsi
> (http://www.codeplex.com/psmsi/) but I want to be able to get
> installer information (and eventually information from an
> msi) in ruby as it'd help towards getting a windows installer
> puppet package provider.
If you want to use the Windows API directly, you could wrap the MSI
functions you need and call them. For example:
# Warning: untested code
MsiGetProductInfo = API.new('MsiGetProductInfo', 'PPPP', 'I', 'msi)
buf = 0.chr * 512 # Or whatever you need, depending on the property
buf_val = [buf.size].pack('L')
MsiGetProductInfo.call(some_product, some_property, buf, buf_val)
> I'm trying to think how best to test the code - based upon
> looking at the tests in psmsi I was wondering if there is a
> ruby library that would allow me to set up temporary keys in
> the registry so I can actually set expectations/assertions on
> known values for installed software - this should be possible
> by abusing RegOverridePredefKey.
Ruby comes with a win32-registry library. I think you could use that.
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