schedule.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'hpricot'
require 'open-uri'
require 'cgi'
require 'pp'
require 'ostruct'
require 'optparse'

SCHEDULE_URI = 'http://events.ccc.de/congress/2008/Fahrplan/schedule.en.xml'

class Event
  attr_accessor :start, :duration, :title, :room
  def initialize
    if block_given?
      yield self
    end
  end

  def to_s
    "(#{@room}) #{@start}: #{title} [Duration: #{@duration}h]"
  end
end

class Day
  attr_accessor :index, :date, :events

  def initialize(index, date, events)
    @index = index
    @date = date
    @events = events
  end

  def inspect
    "#<Day> @date=#{@date} @events=(#{@events.size})"
  end
end

def getdays
  doc = Hpricot.XML(open(SCHEDULE_URI))
  days = (doc/"day").map do |day|
    events = (day/"//event").map do |event|
      Event.new do |ev|
        ev.start = (event/'start').inner_html
        ev.duration = (event/'duration').inner_html
        ev.title = CGI.unescapeHTML((event/'title').inner_html)
        ev.room = (event/'room').inner_html
      end
    end
    Day.new(day.attributes['index'], day.attributes['date'], events)
  end
end

$options = OpenStruct.new
ARGV.options do |o|
  o.banner = 'usage: schedule.rb [option]'
  o.separator('')

  o.on('-t', '--time TIME', 'find by time (regular expression)') do |t|
    $options.time = t
  end
  
  o.on('-d', '--day DAY', 'only day (1..4)') do |d|
    if (1..4).to_a.include? d.to_i
      $options.day = d
    end
  end

  o.on('-n', '--title TITLE', 'find by title (regular expression)') do |t|
    $options.title = t
  end
end
ARGV.parse!

days = getdays
searchdays = $options.day ? [days[$options.day.to_i-1]] : days
searchdays.each do |d|
  puts "Tag #{d.index} (#{d.date})"
  events = d.events.sort_by{|e| e.start }
  
  if $options.time
    events = events.select{|ev| ev.start =~ /^#{$options.time}/i }
  end

  if $options.title
    events = events.select{|ev| ev.title =~ /#{$options.title}/i }
  end

  puts events
end