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module Gitlab
module Nanoc
def self.config
@config ||= YAML.load(File.read('nanoc.yaml'))
end
def self.output_dir
config.fetch('output_dir')
end
end
class Page
attr_reader :file
def initialize(file)
@file = file
end
def exists?
File.exists?(@file)
end
def path
File.dirname(@file)
end
def document
raise ArgumentError unless exists?
@doc ||= Nokogiri::HTML(File.read(@file))
end
def links
@links ||= document.css(:a).map do |link|
Gitlab::Link.new(link, self)
end
end
def has_anchor?(name)
document.at_css(%Q{[id="#{name}"]})
end
end
class Link
attr_reader :link, :href, :page
def initialize(link, page)
@link = link
@href = link[:href]
@page = page
end
def path
@href.to_s.partition('#').first
end
def to_anchor?
@href.to_s.include?('#')
end
def anchor_name
raise ArguentError unless to_anchor?
@href.to_s.partition('#').last
end
def internal_anchor?
raise ArguentError unless to_anchor?
@href.to_s.partition('#').first.empty?
end
def internal?
@href.to_s.length > 0 && !@href.include?(':')
end
def destination_path
raise unless internal?
if @href.start_with?('/')
Gitlab::Nanoc.output_dir + path
else
::File.expand_path(path, @page.path)
end
end
def destination_file
if destination_path.end_with?('.html')
destination_path
else
File.join(destination_path, 'index.html')
end
end
def destination_page
if internal_anchor?
@page
else
Gitlab::Page.new(destination_file)
end
end
end
end
Nanoc::Check.define(:internal_anchors) do
@output_filenames.each do |file|
Gitlab::Page.new(file).links.each do |link|
next unless link.internal?
next unless link.to_anchor?
link.destination_page.yield_self do |page|
next if link.anchor_name == 'markdown-toc'
if !page.exists?
add_issue("Page `#{page.file}` linked from `#{link.page.file}` not found!")
elsif !page.has_anchor?(link.anchor_name)
add_issue("Broken anchor `##{link.anchor_name}` found in `#{link.page.file}` to `#{link.destination_file}`")
end
end
end
end
end
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