parsing_svn_url.rb

class Array
  def empty?
    count == 0
  end
end

class Subversion
  def initialize
    svn_dirs = ENV['PATH'].split(';').select do |path|
      Dir.new(path).entries.include? 'svn.exe' if File.directory? path
    end

    raise StandardError.new 'svn.exe was not found in your path' if svn_dirs.empty?

    @svn = Pathname.new svn_dirs.first + '/svn.exe'
  end

  def info(*args)
    open("|#{@svn} info #{args.join ' '}").read
  end
end

task : do
  svn_info = Subversion.new.info('--xml')
  doc = Hpricot.XML(svn_info)
  puts (doc/:info/:entry/:url).inner_html
end