An extension of Xcodeproj::Project to add frameworks directly to a project

Xcodeproj_add_framework.rb

require 'xcodeproj'

# Based on: http://blog.seiji.me/2012/02/10/create-xcodeproj-using-xcode-project/
# example usage
# project.add_system_framework("Foundation.framework")
# project.add_system_framework("libxml2.dylib")

module Xcodeproj
    class Project
        def add_system_framework(fname)
            name, path = nil, nil
            if (fname =~ /^lib/)
                name, path = fname, "usr/lib/#{fname}"
            else
                name, path = "#{fname}", "System/Library/Frameworks/#{fname}"
            end
                frameworks_group = self.frameworks_group
                frameworks_group.children.each do |framework|
                    if framework.name == name
                        return
                    end
                end
                
                framework = self.new_file(path, :sdk_root)
                framework.move(self.frameworks_group)
                
                end
        end
end