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?? auth
?? backports
?? body_proxy.rb(958 B)
?? builder.rb(4.27 KB)
?? cascade.rb(1.34 KB)
?? chunked.rb(1.58 KB)
?? commonlogger.rb(2.28 KB)
?? conditionalget.rb(2.5 KB)
?? config.rb(379 B)
?? content_length.rb(840 B)
?? content_type.rb(670 B)
?? deflater.rb(4.57 KB)
?? directory.rb(4.2 KB)
?? etag.rb(2.11 KB)
?? file.rb(4.09 KB)
?? handler
?? handler.rb(3.24 KB)
?? head.rb(484 B)
?? lint.rb(29.26 KB)
?? lobster.rb(1.97 KB)
?? lock.rb(601 B)
?? logger.rb(357 B)
?? methodoverride.rb(972 B)
?? mime.rb(30.89 KB)
?? mock.rb(5.68 KB)
?? multipart
?? multipart.rb(1.14 KB)
?? nulllogger.rb(951 B)
?? recursive.rb(1.73 KB)
?? reloader.rb(2.97 KB)
?? request.rb(12.45 KB)
?? response.rb(4.33 KB)
?? rewindable_input.rb(3.19 KB)
?? runtime.rb(961 B)
?? sendfile.rb(5.18 KB)
?? server.rb(10.8 KB)
?? session
?? showexceptions.rb(11.7 KB)
?? showstatus.rb(3.46 KB)
?? static.rb(4.87 KB)
?? tempfile_reaper.rb(670 B)
?? urlmap.rb(2.46 KB)
?? utils
?? utils.rb(20.55 KB)

Editing: static.rb

module Rack

# The Rack::Static middleware intercepts requests for static files
  # (javascript files, images, stylesheets, etc) based on the url prefixes or
  # route mappings passed in the options, and serves them using a Rack::File
  # object. This allows a Rack stack to serve both static and dynamic content.
  #
  # Examples:
  #
  # Serve all requests beginning with /media from the "media" folder located
  # in the current directory (ie media/*):
  #
  #     use Rack::Static, :urls => ["/media"]
  #
  # Serve all requests beginning with /css or /images from the folder "public"
  # in the current directory (ie public/css/* and public/images/*):
  #
  #     use Rack::Static, :urls => ["/css", "/images"], :root => "public"
  #
  # Serve all requests to / with "index.html" from the folder "public" in the
  # current directory (ie public/index.html):
  #
  #     use Rack::Static, :urls => {"/" => 'index.html'}, :root => 'public'
  #
  # Serve all requests normally from the folder "public" in the current
  # directory but uses index.html as default route for "/"
  #
  #     use Rack::Static, :urls => [""], :root => 'public', :index =>
  #     'index.html'
  #
  # Set custom HTTP Headers for based on rules:
  #
  #     use Rack::Static, :root => 'public',
  #         :header_rules => [
  #           [rule, {header_field => content, header_field => content}],
  #           [rule, {header_field => content}]
  #         ]
  #
  #  Rules for selecting files:
  #
  #  1) All files
  #     Provide the :all symbol
  #     :all => Matches every file
  #
  #  2) Folders
  #     Provide the folder path as a string
  #     '/folder' or '/folder/subfolder' => Matches files in a certain folder
  #
  #  3) File Extensions
  #     Provide the file extensions as an array
  #     ['css', 'js'] or %w(css js) => Matches files ending in .css or .js
  #
  #  4) Regular Expressions / Regexp
  #     Provide a regular expression
  #     %r{\.(?:css|js)\z} => Matches files ending in .css or .js
  #     /\.(?:eot|ttf|otf|woff|svg)\z/ => Matches files ending in
  #       the most common web font formats (.eot, .ttf, .otf, .woff, .svg)
  #       Note: This Regexp is available as a shortcut, using the :fonts rule
  #
  #  5) Font Shortcut
  #     Provide the :fonts symbol
  #     :fonts => Uses the Regexp rule stated right above to match all common web font endings
  #
  #  Rule Ordering:
  #    Rules are applied in the order that they are provided.
  #    List rather general rules above special ones.
  #
  #  Complete example use case including HTTP header rules:
  #
  #     use Rack::Static, :root => 'public',
  #         :header_rules => [
  #           # Cache all static files in public caches (e.g. Rack::Cache)
  #           #  as well as in the browser
  #           [:all, {'Cache-Control' => 'public, max-age=31536000'}],
  #
  #           # Provide web fonts with cross-origin access-control-headers
  #           #  Firefox requires this when serving assets using a Content Delivery Network
  #           [:fonts, {'Access-Control-Allow-Origin' => '*'}]
  #         ]
  #
  class Static

def initialize(app, options={})
      @app = app
      @urls = options[:urls] || ["/favicon.ico"]
      @index = options[:index]
      root = options[:root] || Dir.pwd

# HTTP Headers
      @header_rules = options[:header_rules] || []
      # Allow for legacy :cache_control option while prioritizing global header_rules setting
      @header_rules.insert(0, [:all, {'Cache-Control' => options[:cache_control]}]) if options[:cache_control]

@file_server = Rack::File.new(root)
    end

def overwrite_file_path(path)
      @urls.kind_of?(Hash) && @urls.key?(path) || @index && path =~ /\/$/
    end

def route_file(path)
      @urls.kind_of?(Array) && @urls.any? { |url| path.index(url) == 0 }
    end

def can_serve(path)
      route_file(path) || overwrite_file_path(path)
    end

def call(env)
      path = env[PATH_INFO]

if can_serve(path)
        env["PATH_INFO"] = (path =~ /\/$/ ? path + @index : @urls[path]) if overwrite_file_path(path)
        path = env["PATH_INFO"]
        response = @file_server.call(env)

headers = response[1]
        applicable_rules(path).each do |rule, new_headers|
          new_headers.each { |field, content| headers[field] = content }
        end

response
      else
        @app.call(env)
      end
    end

# Convert HTTP header rules to HTTP headers
    def applicable_rules(path)
      @header_rules.find_all do |rule, new_headers|
        case rule
        when :all
          true
        when :fonts
          path =~ /\.(?:ttf|otf|eot|woff|svg)\z/
        when String
          path = ::Rack::Utils.unescape(path)
          path.start_with?(rule) || path.start_with?('/' + rule)
        when Array
          path =~ /\.(#{rule.join('|')})\z/
        when Regexp
          path =~ rule
        else
          false
        end
      end
    end

end
end

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