# Try to determine the terminal with.
# If it is not possible to to so, it returns the default_width.
# <tt>default_width</tt> Defaults to 81
def terminal_width(default_width = 81)
  
  begin
    tiocgwinsz = 0x5413
    data = [0, 0, 0, 0].pack("SSSS")
    if !RUBY_PLATFORM.include?('java') && @out.ioctl(tiocgwinsz, data) >= 0 # JRuby crashes on ioctl
      rows, cols, xpixels, ypixels = data.unpack("SSSS")
      raise unless cols > 0
      cols
    else
      raise
    end
  rescue 
    begin
      IO.popen('stty -a 2>&1') do |pipe|
        column_line = pipe.detect { |line| /(\d+) columns/ =~ line }
        raise unless column_line
        $1.to_i
      end
    rescue
      default_width
    end
  end
end

# Copies request-log-analyzer analyzer rake tasks into the /lib/tasks folder of a project, for easy access and
# environment integration.
# <tt>install_type</tt> Type of project to install into. Defaults to :rails.
# Raises if it cannot find the project folder or if the install_type is now known.
def install_rake_tasks(install_type = :rails)
  if install_type.to_sym == :rails
    require 'ftools'
    if File.directory?('./lib/tasks/')
      task_file = File.expand_path('../../tasks/request_log_analyzer.rake', File.dirname(__FILE__))
      File.copy(task_file, './lib/tasks/request_log_analyze.rake')
      puts "Installed rake tasks."
      puts "To use, run: rake rla:report"
    else
      puts "Cannot find /lib/tasks folder. Are you in your Rails directory?"
      puts "Installation aborted."
    end
  else
    raise "Cannot perform this install type! (#{install_type.to_s})"
  end
end