Regex to parse package name and version number from nuget package filenames

I have a directory of nuget packages that I've downloaded from nuget.org. I'm trying to create a regex that will parse out the package name and version number from the filename. It doesn't seem difficult at first glance; the filenames have a clear pattern:

{PackageName}.{VersionNumber}.nupkg

Edge cases make it challenging though.

• Package names can have dashes, underscores, and numbers
• Package names can have effectively unlimited parts separated by dots
• Version numbers consist of 3-4 groups of numbers, separated by dots
• Version numbers sometimes are suffixed with pre-release tags (-alpha, -beta, etc)

Here's a sample list of nuget package filenames:

knockoutjs.3.4.2.nupkglog4net.2.0.8.nupkgruntime.tizen.4.0.0-armel.microsoft.netcore.jit.2.0.0.nupkgnuget.core.2.7.0-alpha.nupkgmicrosoft.identitymodel.6.1.7600.16394.nupkg

I want to be able to do a search/replace in a Serious Text Editor where the search is a regex with two groups, one for the package name and one for the version number. The output should be "Package: \1 Version: \2". With the 5 packages above, the output should be:

Package: knockoutjs Version: 3.4.2Package: log4net Version: 2.0.8Package: runtime.tizen.4.0.0-armel.microsoft.netcore.jit Version: 2.0.0Package: nuget.core Version: 2.7.0-alphaPackage: microsoft.identitymodel Version: 6.1.7600.16394

The closest relatively concise regex I've come up with is:

^([^\s]*)\.((?:[0-9]+\.){3,})nupkg$

...which results in the following output:

Package: knockoutjs Version: 3.4.2.Package: log4net Version: 2.0.8.Package: runtime.tizen.4.0.0-armel.microsoft.netcore.jit Version: 2.0.0.nuget.core.2.7.0-alpha.nupkgPackage: microsoft.identitymodel.6 Version: 1.7600.16394.

It handles the first three decently, although I don't want that trailing dot. It doesn't even match on the fourth one, and the fifth one has the first part of the version number lumped in with the package name.

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