264 lines
7.4 KiB
Ruby
264 lines
7.4 KiB
Ruby
# Built on Rack
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require 'rack'
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require 'rack/file'
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require 'rack/lint'
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require 'rack/head'
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require 'middleman-core/util'
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require 'middleman-core/template_renderer'
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module Middleman
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module CoreExtensions
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# Base helper to manipulate asset paths
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module Request
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# Extension registered
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class << self
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# @private
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def included(app)
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# CSSPIE HTC File
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::Rack::Mime::MIME_TYPES['.htc'] = 'text/x-component'
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# Let's serve all HTML as UTF-8
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::Rack::Mime::MIME_TYPES['.html'] = 'text/html; charset=utf-8'
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::Rack::Mime::MIME_TYPES['.htm'] = 'text/html; charset=utf-8'
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app.extend ClassMethods
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app.extend ServerMethods
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Middleman.extend CompatibleClassMethods
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# Include instance methods
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app.send :include, InstanceMethods
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end
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end
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module ClassMethods
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# Reset Rack setup
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#
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# @private
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def reset!
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@rack_app = nil
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end
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# Get the static instance
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#
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# @private
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# @return [Middleman::Application]
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def inst(&block)
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@inst ||= begin
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mm = new(&block)
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mm.run_hook :ready
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mm.config_context.execute_ready_callbacks
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mm
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end
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end
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# Set the shared instance
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#
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# @private
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attr_writer :inst
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# Return built Rack app
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#
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# @private
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# @return [Rack::Builder]
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def to_rack_app(&block)
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@rack_app ||= begin
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app = ::Rack::Builder.new
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app.use Rack::Lint
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app.use Rack::Head
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Array(@middleware).each do |klass, options, middleware_block|
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app.use(klass, *options, &middleware_block)
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end
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inner_app = inst(&block)
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app.map('/') { run inner_app }
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Array(@mappings).each do |path, map_block|
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app.map(path, &map_block)
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end
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app
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end
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end
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# Prototype app. Used in config.ru
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#
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# @private
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# @return [Rack::Builder]
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def prototype
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reset!
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to_rack_app
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end
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# Call prototype, use in config.ru
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#
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# @private
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def call(env)
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prototype.call(env)
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end
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# Use Rack middleware
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#
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# @param [Class] middleware Middleware module
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# @return [void]
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def use(middleware, *args, &block)
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@middleware ||= []
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@middleware << [middleware, args, block]
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end
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# Add Rack App mapped to specific path
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#
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# @param [String] map Path to map
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# @return [void]
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def map(map, &block)
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@mappings ||= []
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@mappings << [map, block]
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end
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end
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module ServerMethods
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# Create a new Class which is based on Middleman::Application
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# Used to create a safe sandbox into which extensions and
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# configuration can be included later without impacting
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# other classes and instances.
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#
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# rubocop:disable ClassVars
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# @return [Class]
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def server(&block)
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@@servercounter ||= 0
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@@servercounter += 1
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const_set("MiddlemanApplication#{@@servercounter}", Class.new(Middleman::Application, &block))
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end
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end
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module CompatibleClassMethods
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# Create a new Class which is based on Middleman::Application
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# Used to create a safe sandbox into which extensions and
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# configuration can be included later without impacting
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# other classes and instances.
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#
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# @return [Class]
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def server(&block)
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::Middleman::Application.server(&block)
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end
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end
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# Methods to be mixed-in to Middleman::Application
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module InstanceMethods
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delegate :use, to: :"self.class"
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delegate :map, to: :"self.class"
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def call(env)
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dup.call!(env)
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end
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# Rack Interface
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#
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# @param env Rack environment
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def call!(env)
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# Store environment, request and response for later
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req = ::Rack::Request.new(env)
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res = ::Rack::Response.new
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logger.debug "== Request: #{env['PATH_INFO']}"
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# Catch :halt exceptions and use that response if given
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catch(:halt) do
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process_request(env, req, res)
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res.status = 404
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res.finish
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end
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end
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# Halt the current request and return a response
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#
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# @param [String] response Response value
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def halt(response)
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throw :halt, response
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end
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# Core response method. We process the request, check with
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# the sitemap, and return the correct file, response or status
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# message.
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#
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# @param env
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# @param [Rack::Response] res
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def process_request(env, _, res)
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start_time = Time.now
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request_path = URI.decode(env['PATH_INFO'].dup)
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if request_path.respond_to? :force_encoding
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request_path.force_encoding('UTF-8')
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end
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request_path = ::Middleman::Util.full_path(request_path, self)
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# Run before callbacks
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run_hook :before
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# Get the resource object for this path
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resource = sitemap.find_resource_by_destination_path(request_path.gsub(' ', '%20'))
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# Return 404 if not in sitemap
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return not_found(res, request_path) unless resource && !resource.ignored?
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# If this path is a binary file, send it immediately
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return send_file(resource, env) if resource.binary?
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res['Content-Type'] = resource.content_type || 'text/plain'
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begin
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# Write out the contents of the page
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res.write resource.render
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# Valid content is a 200 status
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res.status = 200
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rescue Middleman::TemplateRenderer::TemplateNotFound => e
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res.write "Error: #{e.message}"
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res.status = 500
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end
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# End the request
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logger.debug "== Finishing Request: #{resource.destination_path} (#{(Time.now - start_time).round(2)}s)"
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halt res.finish
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end
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# Add a new mime-type for a specific extension
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#
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# @param [Symbol] type File extension
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# @param [String] value Mime type
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# @return [void]
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def mime_type(type, value)
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type = ".#{type}" unless type.to_s[0] == '.'
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::Rack::Mime::MIME_TYPES[type] = value
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end
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# Halt request and return 404
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def not_found(res, path)
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res.status = 404
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res.write "<html><body><h1>File Not Found</h1><p>#{path}</p></body>"
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res.finish
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end
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# Immediately send static file
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def send_file(resource, env)
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file = ::Rack::File.new nil
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file.path = resource.source_file
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response = file.serving(env)
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status = response[0]
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response[1]['Content-Encoding'] = 'gzip' if %w(.svgz .gz).include?(resource.ext)
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# Do not set Content-Type if status is 1xx, 204, 205 or 304, otherwise
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# Rack will throw an error (500)
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if !(100..199).include?(status) && ![204, 205, 304].include?(status)
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response[1]['Content-Type'] = resource.content_type || 'application/octet-stream'
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end
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halt response
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end
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end
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end
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end
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end
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