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# coding: utf-8
require 'erb'
require 'set'
require 'category'
require 'sitegen'
class Page
# Page is an abstract class.
#
# Implementors must implement several methods:
#
# def url => URI
# def atom_title => String
# def atom_author => Person
# def atom_content => html | nil
# def atom_rights => html | nil
#
# def page_categories => String | Enumerable<String>
#
# def page_published => Time | nil
# def page_updated => Time | nil
# def page_years => Enumerable<Fixnum>
def initialize
Sitegen::add(self)
end
def atom_categories # => Enumerable<Category>
if @categories.nil?
raw = page_categories
if raw.is_a?(String)
raw = raw.split
end
@categories = raw.map{|abbr|Category.new(abbr)}
end
@categories
end
def atom_published # => Time | nil
if @published.nil?
unless page_published.nil?
@published = page_published
else
unless page_updated.nil?
@published = page_updated
end
end
# sanity check
unless page_published.nil? or page_updated.nil?
if page_updated < page_published
@published = page_updated
end
end
end
@published
end
def atom_updated # => Time | nil
if @updated.nil?
unless page_updated.nil?
@updated = page_updated
else
unless page_published.nil?
@updated = page_published
end
end
end
@updated
end
def years # => Enumerable<Fixnum>
if @years.nil?
if atom_published.nil? || atom_updated.nil?
@years = Set[]
else
first = atom_published.year
last = atom_updated.year
years = page_years
years.add(first)
years.add(last)
@years = Set[*years.select{|i|i >= first && i <= last}]
end
end
@years
end
def index_class
return ''
end
def index_link(cururl, depth)
# FIXME: This code is super gross.
ret = " * <span><a class=\"#{index_class}\" href=\"#{cururl.route_to(url)}\" title=\"Published on #{atom_published.strftime('%Y-%m-%d')}"
if atom_updated != atom_published
ret += " (updated on #{atom_updated.strftime('%Y-%m-%d')})"
end
ret += "\">#{atom_title}</a></span><span>"
atom_categories.each do |t|
ret += t.html
end
ret += "</span>\n"
end
end
ERB::new(File::read("tmpl/page.atom.erb")).def_method(Page, 'atom()', "tmpl/page.atom.erb")
ERB::new(File::read("tmpl/page.html.erb")).def_method(Page, 'html()', "tmpl/page.html.erb")
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