gistfile1.builder

  # 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
    commits = []
    log.each do |line|
      commits << [$1, first_commit_time = Time.parse($2)] if line =~ /^\w+? \| (\w+?) \| (.+?) \(.+?\) \| /
    end
    committers = Hash.new(0)
    commits.each do |commit|
      committers[commit[0]] += (commit[1] - first_commit_time) / 86400
    end
    committers.sort {|a,b| a[1] <=> b[1]}.last[0] rescue nil
  end