gistfile1.builder

  def get_owner_or_init_from_svn
    unless self.owner
      owner_name = Source.get_owner_from_svn_log(self.path)
      if owner_name
        self.owner = Owner.find_or_create_by_name(owner_name)
        self.save!
      end
    end
    return self.owner
  end


  # call-seq
  #   get_owner_from_svn_log(Pathname("path/to/source.java")) => owner_name
  #
  # if 'pathname' doesn't exist or there is no commit history then returns nil
  def self.get_owner_from_svn_log(pathname)
    log = `svn log #{pathname}`
    first_commit_time = nil
    committers = Hash.new(0)
    log.reverse_each do |line|
      if line =~ /^\w+? \| (\w+?) \| (.+?) \(.+?\) \| /
        first_commit_time ||= Time.parse($2)
        committers[$1] += (Time.parse($2) - first_commit_time) / 86400
      end
    end
    committers.sort {|a,b| a[1] <=> b[1]}.last[0] rescue nil
  end