2012-11-27 04:28:14 +00:00
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require 'rdoc'
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require 'time'
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require 'webrick'
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class RDoc::Servlet < WEBrick::HTTPServlet::AbstractServlet
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@server_stores = Hash.new { |hash, server| hash[server] = {} }
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@cache = Hash.new { |hash, store| hash[store] = {} }
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attr_reader :asset_dirs
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attr_reader :options
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def self.get_instance server, *options
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stores = @server_stores[server]
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new server, stores, @cache, *options
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end
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2012-11-28 07:41:19 +00:00
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def initialize server, stores, cache, mount_path = nil
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2012-11-27 04:28:14 +00:00
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super server
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2012-11-28 07:41:19 +00:00
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@cache = cache
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@mount_path = mount_path
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@stores = stores
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2012-11-27 04:28:14 +00:00
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@options = RDoc::Options.new
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@options.op_dir = '.'
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darkfish_dir = nil
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# HACK dup
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$LOAD_PATH.each do |path|
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darkfish_dir = File.join path, 'rdoc/generator/template/darkfish/'
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next unless File.directory? darkfish_dir
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@options.template_dir = darkfish_dir
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break
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end
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@asset_dirs = {
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:darkfish => darkfish_dir,
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:json_index =>
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File.expand_path('../generator/template/json_index/', __FILE__),
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}
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end
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def asset generator_name, req, res
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asset_dir = @asset_dirs[generator_name]
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asset_path = File.join asset_dir, req.path
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if_modified_since req, res, asset_path
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res.body = File.read asset_path
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res.content_type = case req.path
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when /css$/ then 'text/css'
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when /js$/ then 'application/javascript'
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else 'application/octet-stream'
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end
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end
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def do_GET req, res
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2012-11-28 07:41:19 +00:00
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req.path.sub!(/^#{Regexp.escape @mount_path}/o, '') if @mount_path
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2012-11-27 04:28:14 +00:00
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case req.path
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when '/' then
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root req, res
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when '/rdoc.css', '/js/darkfish.js', '/js/jquery.js', '/js/search.js',
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%r%^/images/% then
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asset :darkfish, req, res
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when '/js/navigation.js', '/js/searcher.js' then
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asset :json_index, req, res
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when '/js/search_index.js' then
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root_search req, res
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else
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show_documentation req, res
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end
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rescue WEBrick::HTTPStatus::Status
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raise
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rescue => e
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error e, req, res
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end
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def documentation_page store, generator, path, req, res
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name = path.sub(/.html$/, '').gsub '/', '::'
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if klass = store.find_class_or_module(name) then
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res.body = generator.generate_class klass
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elsif page = store.find_text_page(name.sub(/_([^_]*)$/, '.\1')) then
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res.body = generator.generate_page page
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else
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not_found generator, req, res
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end
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end
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def documentation_search store, generator, req, res
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json_index = @cache[store].fetch :json_index do
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@cache[store][:json_index] =
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JSON.dump generator.json_index.build_index
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end
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res.content_type = 'application/javascript'
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res.body = "var search_data = #{json_index}"
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end
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def documentation_source path
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_, source_name, path = path.split '/', 3
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store = @stores[source_name]
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return store, path if store
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store = store_for source_name
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store.load_all
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@stores[source_name] = store
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return store, path
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end
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def error e, req, res
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backtrace = e.backtrace.join "\n"
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res.content_type = 'text/html'
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res.status = 500
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res.body = <<-BODY
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<!DOCTYPE html>
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<html>
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<head>
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<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
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<title>Error - #{ERB::Util.html_escape e.class}</title>
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2012-11-29 23:34:29 +00:00
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<link type="text/css" media="screen" href="#{@mount_path}/rdoc.css" rel="stylesheet">
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2012-11-27 04:28:14 +00:00
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</head>
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<body>
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<h1>Error</h1>
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<p>While processing <code>#{ERB::Util.html_escape req.request_uri}</code> the
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RDoc server has encountered a <code>#{ERB::Util.html_escape e.class}</code>
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exception:
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<pre>#{ERB::Util.html_escape e.message}</pre>
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<p>Backtrace:
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<pre>#{ERB::Util.html_escape backtrace}</pre>
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</body>
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</html>
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BODY
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end
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def generator_for store
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generator = RDoc::Generator::Darkfish.new store, @options
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generator.file_output = false
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generator.asset_rel_path = '..'
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rdoc = RDoc::RDoc.new
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rdoc.store = store
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rdoc.generator = generator
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rdoc.options = @options
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@options.main_page = store.main
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@options.title = store.title
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generator
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end
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def if_modified_since req, res, path = nil
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last_modified = File.stat(path).mtime if path
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res['last-modified'] = last_modified.httpdate
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return unless ims = req['if-modified-since']
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ims = Time.parse ims
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unless ims < last_modified then
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res.body = ''
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raise WEBrick::HTTPStatus::NotModified
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end
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end
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def installed_docs
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ri_paths.map do |path, type|
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store = RDoc::Store.new path, type
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exists = File.exist? store.cache_path
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case type
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when :gem then
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gem_path = path[%r%/([^/]*)/ri$%, 1]
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[gem_path, "#{gem_path}/", exists, type, path]
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when :system then
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['Ruby Documentation', 'ruby/', exists, type, path]
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when :site then
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['Site Documentation', 'site/', exists, type, path]
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when :home then
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['Home Documentation', 'home/', exists, type, path]
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end
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end
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end
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def not_found generator, req, res
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res.body = generator.generate_servlet_not_found req.path
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res.status = 404
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end
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def ri_paths &block
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RDoc::RI::Paths.each true, true, true, :all, &block
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end
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def root req, res
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generator = RDoc::Generator::Darkfish.new nil, @options
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res.body = generator.generate_servlet_root installed_docs
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res.content_type = 'text/html'
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end
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def root_search req, res
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search_index = []
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info = []
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installed_docs.map do |name, href, exists, type, path|
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next unless exists
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search_index << name
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comment = case type
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when :gem
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gemspec = path.gsub(%r%/doc/([^/]*?)/ri$%,
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'/specifications/\1.gemspec')
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spec = Gem::Specification.load gemspec
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spec.summary
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when :system then
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'Documentation for the Ruby standard library'
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when :site then
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'Documentation for non-gem libraries'
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when :home then
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'Documentation from your home directory'
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end
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info << [name, '', path, '', comment]
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end
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index = {
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:index => {
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:searchIndex => search_index,
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:longSearchIndex => search_index,
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:info => info,
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}
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}
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res.body = "var search_data = #{JSON.dump index};"
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res.content_type = 'application/javascript'
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end
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def show_documentation req, res
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store, path = documentation_source req.path
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if_modified_since req, res, store.cache_path
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generator = generator_for store
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case path
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when nil, '', 'index.html' then
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res.body = generator.generate_index
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when 'table_of_contents.html' then
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res.body = generator.generate_table_of_contents
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when 'js/search_index.js' then
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documentation_search store, generator, req, res
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else
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documentation_page store, generator, path, req, res
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end
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ensure
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res.content_type ||= 'text/html'
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end
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def store_for source_name
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case source_name
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when 'ruby' then
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RDoc::Store.new RDoc::RI::Paths.system_dir, :system
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else
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ri_dir, type = ri_paths.find do |dir, dir_type|
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next unless dir_type == :gem
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source_name == dir[%r%/([^/]*)/ri$%, 1]
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end
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raise "could not find ri documentation for #{source_name}" unless
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ri_dir
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RDoc::Store.new ri_dir, type
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end
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end
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end
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