Project: vpim

# gem install vpim (may require root privilege)

require 'vpim/icalendar'

cal = Vpim::Icalendar.create2

cal.add_event do |e|
  e.dtstart       Date.new(2005, 04, 28)
  e.dtend         Date.new(2005, 04, 29)
  e.summary       "Monthly meet-the-CEO day"
  e.description <<'---'
Unlike last one, this meeting will change your life because
we are going to discuss your likely demotion if your work isn't
done soon.
---
  e.categories    [ 'APPOINTMENT' ]
  e.categories do |c| c.push 'EDUCATION' end
  e.url           'http://www.example.com'
  e.sequence      0
  e.access_class  "PRIVATE"
  e.transparency  'OPAQUE'

  now = Time.now
  e.created       now
  e.lastmod       now

  e.organizer do |o|
    o.cn = "Example Organizer, Mr."
    o.uri = "mailto:organizer@example.com"
  end

  attendee = Vpim::Icalendar::Address.create("mailto:attendee@example.com")
  attendee.rsvp = true
  e.add_attendee attendee
end

icsfile = cal.encode

puts '--- Encode:'

puts icsfile

puts '--- Decode:'

cal = Vpim::Icalendar.decode(icsfile).first

cal.components do |e|
  puts e.summary
  puts e.description
  puts e.dtstart.to_s
  puts e.dtend.to_s
end

--- Encode:
BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Ensemble Independent//vPim 0.357//EN
CALSCALE:Gregorian
BEGIN:VEVENT
DTSTART;VALUE=DATE:20050428
DTEND;VALUE=DATE:20050429
SUMMARY:Monthly meet-the-CEO day
DESCRIPTION:Unlike last one, this meeting will change your life because\nwe
  are going to discuss your likely demotion if your work isn't\ndone soon.\n
CATEGORIES:APPOINTMENT,EDUCATION
URL:http://www.example.com
SEQUENCE:0
CLASS:PRIVATE
CREATED:20060402T231755
LAST-MODIFIED:20060402T231755
ORGANIZER;CN="Example Organizer, Mr.":mailto:organizer@example.com
ATTENDEE;RSVP=true:mailto:attendee@example.com
END:VEVENT
END:VCALENDAR
--- Decode:
Monthly meet-the-CEO day
Unlike last one, this meeting will change your life because
we are going to discuss your likely demotion if your work isn't
done soon.
Thu Apr 28 00:00:00 UTC 2005
Fri Apr 29 00:00:00 UTC 2005

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