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# coding: utf-8
require 'date'
require 'erb'
require 'set'
require 'config'
require 'license'
require 'page'
require 'pandoc'
require 'person'
class LocalPage < Page
def initialize(infile)
@infile = infile
end
# Some of this code looks a little weird because it is
# super-aggressively lazy-evaluated and cached.
def _infile ; @infile ; end
def _input ; @input ||= File::read(_infile) ; end
def _pandoc
if @pandoc.nil?
types = {
'md' => 'markdown'
}
ext = File::extname(_infile).gsub(/^[.]/, '')
type = types[ext] || ext
@pandoc = Pandoc::load(type, _input)
if @pandoc['pandoc_format']
@pandoc = Pandoc::load(@pandoc['pandoc_format'], _input)
end
end
@pandoc
end
# Query simple document metadata
def title ; @title ||= _pandoc['title'] || _input.split("\n",2).first ; end
def author ; @author ||= Person::new( _pandoc['author'] || Config::get.default_author) ; end
def license ; @license ||= License::new(_pandoc['license'] || Config::get.default_license); end
def head ; @head ||= _pandoc['html_head_extra'] ; end
def class ; @class ||= _pandoc['class'] ; end
def _tags ; @_tags ||= _pandoc['tags'] || [] ; end
def content
if @content.nil?
@content = ''
# Only insert the title if it came from Pandoc metadata;
# if the title was inferred from the the body content,
# then it is already in the page.
unless _pandoc['title'].nil?
@content += "<h1 class=title>#{title}</h1>\n"
end
# Insert the body
@content = _pandoc.to('html5 '+(_pandoc['pandoc_flags']||''))
end
@content
end
def rights
# TODO: simplify year spans
@rights ||= "<p>The content of this page is Copyright © #{years.sort.join(', ')} #{author.html}.</p>\n" +
"<p>This page is licensed under the #{license.html} license.</p>"
end
def _gitdates
@gitdates ||= `git log --format='%cI' -- #{_infile}`.split('\n').select{|s|!s.empty?}.map{|s|DateTime::iso8601(s)}
end
def _published
if @_published.nil?
raw = _pandoc['published']
@_published = Datetime::parse(raw) unless raw.nil?
end
if @_published.nil?
@_published = _gitdates.sort.first
end
@_published
end
def _updated
if @_updated.nil?
raw = _pandoc['updated']
@_updated = DateTime::parse(raw) unless raw.nil?
end
if @_updated.nil?
@updated = _gitdates.sort.last
end
@_updated
end
def _years
@years ||= Set[*_gitdates.map{|dt|dt.year}]
end
def abssrcpath
@srcpath ||= _infile.sub(/^(src|out)\//, '/')
end
def absoutpath
@outpath ||= abssrcpath.sub(/\.[^\/.]*$/, '.html').sub(/\/index[.]html$/, '')
end
def url
@url ||= Config::get.url + absoutpath
end
def srcurl
@srcurl ||= Config::get.url + abssrcpath
end
end
ERB::new(File::read("tmpl/page.html.erb")).def_method(LocalPage, 'html()', "tmpl/page.html.erb")
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