I have been looking into automating some of my development tasks in Cocoa/Xcode environment.  For the longest time I was using Subversion which would integrate quite well with Xcode. Recently, however, I have been exploring other version control systems.  Especially git.  Since it’s a much newer (D)VCS it does not have as much integration into systems as subversion.

I have managed to find some interesting solutions to include Git version number in Xcode project however the only actual solutions I have found are written in languages I don’t care for anymore.  Yes I can program in them but why would I want to.

So here is a quick solution written in MacRuby.

#!/usr/local/bin/macruby

git_output = `git show --abbrev-commit`
commit_version = git_output.split("\n").grep(/^commit/).first
version = commit_version.gsub(/^commit\s+(.*)\.{3}/, "\\1")
if version
  list = NSMutableDictionary.dictionaryWithContentsOfFile("Info.plist")
  list["CFBundleVersion"] = version
  list.writeToFile('Info.plist', :atomically => true)
end

In my final solution I intend to have an output in following format:

major.minor.revision (build)

where the “build” is going to correspond with the git commit version
and the other parts will reflect the marketing version numbers.