Created
November 3, 2010 00:30
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A ruby DSL for making timelines.
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require 'date' | |
module Chronograph | |
class Timeline | |
include Enumerable | |
class Event < Struct.new(:name, :date, :desc) | |
attr_accessor :name, :date, :desc | |
def initialize(name, date, desc) | |
raise TypeError.new("date must be a date") unless date.is_a? Date | |
raise TypeError.new("name has to be a name or symbol") unless name.is_a?(String) || name.is_a?(Symbol) | |
raise TypeError.new("desc must be a string") unless desc.is_a? String | |
@name = name | |
@date = date | |
@desc = desc | |
end | |
end | |
class Person < Struct.new(:name, :birth, :death, :desc, :events) | |
attr_reader :name, :birth, :death, :desc, :events | |
def initialize(name, birth, death, desc, *events) | |
raise TypeError.new("name has to be a name or symbol") unless name.is_a?(String) || name.is_a?(Symbol) | |
raise TypeError.new("birth and death must be a date") unless birth.is_a?(Date) && death.is_a?(Date) | |
raise TypeError.new("desc must be a string") unless desc.is_a? String | |
@name = name | |
@birth = birth | |
@death = death | |
@desc = desc | |
@events = events | |
end | |
def events | |
[begining_event, ending_event, @events].flatten | |
end | |
def begining_event | |
Event.new("Birth of #{name}", birth, "#{name} is born") | |
end | |
def ending_event | |
Event.new("Death of #{name}", death, "#{name} dies") | |
end | |
end | |
class LongEvent < Person | |
def begining_event | |
Event.new("Begining of #{name}", birth, "#{name} begins") | |
end | |
def ending_event | |
Event.new("End of #{name}", death, "#{name} ends") | |
end | |
end | |
class War < LongEvent; end | |
def initialize(&block) | |
@people = [] | |
@events = [] | |
instance_eval(&block) | |
end | |
def each(&block) | |
consolidate.each(&block) | |
end | |
def person(name, birth, death, desc, &block) | |
@life_events = [] | |
def life_event(name, date, desc) | |
@life_events << Event.new(name, date, desc) | |
end | |
instance_eval(&block) if block != nil | |
@people << Person.new(name, birth, death, desc, *@life_events) | |
end | |
def long_event(name, birth, death, desc, &block) | |
@long_events = [] | |
def le_event(name, date, desc) | |
@long_events << Event.new(name, date, desc) | |
end | |
instance_eval(&block) if block != nil | |
@people << LongEvent.new(name, birth, death, desc, *@long_events) | |
end | |
def event(name, date, desc) | |
@events << Event.new(name, date, desc) | |
end | |
def today | |
event "Today", Date.today, "this day" | |
end | |
def consolidate | |
t = [] | |
t << @events << @people.map { |x| x.events } | |
return t.flatten.sort { |a, b| a.date <=> b.date } | |
end | |
def get_text | |
consolidate.map { |x| "#{x.date}: #{x.name}, #{x.desc}" }.join("\n") | |
end | |
def get_html_table | |
r = "<table>" | |
consolidate.each do |x| | |
r += "<tr>" | |
r += [x.date, x.name, x.desc].map { |x| "<td>" + x.to_s + "</td>"}.join | |
r += "</tr>" | |
end | |
r += "</table>" | |
end | |
end | |
end | |
if $0 == __FILE__ | |
t = Chronograph::Timeline.new do | |
person "Mr. Ruby", Date.new(1654), Date.new(2010), "He was awesome" do | |
life_event "Mr. Ruby leaves Japan", Date.new(2000), "It was easy" | |
long_event "War against Java", Date.new(2005), Date.new(2007), "It was needed" do | |
le_event "Battle of the MRI", Date.new(2005, 5, 6), "Mr. Ruby almost lost" | |
le_event "Battle of the JVM", Date.new(2005, 10, 31), "This was one scary halloween for Javaland" | |
end | |
end | |
event "Javaland founded", Date.new(1990), "1000s die" | |
today | |
end | |
#t.each { |x| puts x.inspect } | |
puts t.get_text | |
end |
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