From: Jan Svitok <jan.svitok@...>
Date: 2006-10-04T00:17:38+09:00
Subject: Re: Finding the file version of a win32 dll in Ruby

On 10/3/06, Phil Wilson <canuckdba@gmail.com> wrote:
> Is there a way to determine the file version attribute in win32 using Ruby?
> I would like to report and compare file versions between 2 different windows
> computers using Ruby.  I am mainly concerned with dll, ocx and exe file
> types.
>
> Thanks for any help.
> Phil

I use filever.exe (download from [1] and/or win xp sp2 cd) and this:

module Win
	class Version
		class << self
			# returns version as array i.e. [1, 2, 12312, 5] or
			# empty array
			def get_version_array(path)
				(get_version(path) || '').split('.').collect {|i| i.to_i}
			end

			# return version as string ('1.2.12312.5') or nil
			def get_version(path)
				ver = short(path)
				ver.empty? ? nil : ver[14..30].strip
			end

			def short(path)
				`filever /B /A "#{Path.to_win(path)}" 2>&1`
			end

			def full(path)
				`filever.exe /V "#{Path.to_win(path)}" 2>&1`
			end
		end
	end
end

[1] http://www.microsoft.com/downloads/details.aspx?FamilyId=49AE8576-9BB9-4126-9761-BA8011FABF38&displaylang=en