log2icalendar.rb

#!/usr/bin/env ruby 
# 
#  Git log to iCalendar 
# 
#  Written by Dmitry Chestnykh, 5 Aug 2008 
#  Public domain 
# 
#  Usage: 
# 
#  log2icalendar.rb path-to-git-repo > outfile.ics
# 
require 'date' 
puts "BEGIN:VCALENDAR" 
puts "VERSION:2.0" 
puts "PRODID:-//hacksw/handcal//NONSGML v1.0//EN" 
puts "X-WR-CALNAME:Podcasts"
event_started = false 
IO.popen("cd #{ARGV[0]}; git log","r").each do |line|
     if line =~ /Date:/ 
         date_str = line.scan(/Date:(.*)/)[0][0] 
         date = DateTime.parse(date_str, '%a %-d %b %Y %T %z') 
         # print event 
         puts "\nEND:VEVENT" if event_started 
         event_started = true 
         puts "BEGIN:VEVENT" 
         puts "DTSTART:" + date.strftime("%Y%m%dT%H%M%S") 
         puts "DTEND:" + date.strftime("%Y%m%dT%H%M%S") 
         print "SUMMARY:" 
     elsif line =~ /[ ]{4}/  # commit message after 4 spaces 
         print line.strip.gsub(/([;,\\\\])/, '\\\\\\1') 
     end 
end 
puts "\nEND:VEVENT" 
puts "END:VCALENDAR"