file.rb in rack-2.1.0

- old
+ new
@@ -1,176 +1,8 @@
-require 'time'
-require 'rack/utils'
-require 'rack/mime'
-require 'rack/request'
-require 'rack/head'
+# frozen_string_literal: true
 
-module Rack
-  # Rack::File serves files below the +root+ directory given, according to the
-  # path info of the Rack request.
-  # e.g. when Rack::File.new("/etc") is used, you can access 'passwd' file
-  # as http://localhost:9292/passwd
-  #
-  # Handlers can detect if bodies are a Rack::File, and use mechanisms
-  # like sendfile on the +path+.
+require 'rack/files'
 
-  class File
-    ALLOWED_VERBS = %w[GET HEAD OPTIONS]
-    ALLOW_HEADER = ALLOWED_VERBS.join(', ')
-
-    attr_reader :root
-
-    def initialize(root, headers={}, default_mime = 'text/plain')
-      @root = root
-      @headers = headers
-      @default_mime = default_mime
-      @head = Rack::Head.new(lambda { |env| get env })
-    end
-
-    def call(env)
-      # HEAD requests drop the response body, including 4xx error messages.
-      @head.call env
-    end
-
-    def get(env)
-      request = Rack::Request.new env
-      unless ALLOWED_VERBS.include? request.request_method
-        return fail(405, "Method Not Allowed", {'Allow' => ALLOW_HEADER})
-      end
-
-      path_info = Utils.unescape_path request.path_info
-      return fail(400, "Bad Request") unless Utils.valid_path?(path_info)
-
-      clean_path_info = Utils.clean_path_info(path_info)
-      path = ::File.join(@root, clean_path_info)
-
-      available = begin
-        ::File.file?(path) && ::File.readable?(path)
-      rescue SystemCallError
-        false
-      end
-
-      if available
-        serving(request, path)
-      else
-        fail(404, "File not found: #{path_info}")
-      end
-    end
-
-    def serving(request, path)
-      if request.options?
-        return [200, {'Allow' => ALLOW_HEADER, CONTENT_LENGTH => '0'}, []]
-      end
-      last_modified = ::File.mtime(path).httpdate
-      return [304, {}, []] if request.get_header('HTTP_IF_MODIFIED_SINCE') == last_modified
-
-      headers = { "Last-Modified" => last_modified }
-      mime_type = mime_type path, @default_mime
-      headers[CONTENT_TYPE] = mime_type if mime_type
-
-      # Set custom headers
-      @headers.each { |field, content| headers[field] = content } if @headers
-
-      response = [ 200, headers ]
-
-      size = filesize path
-
-      range = nil
-      ranges = Rack::Utils.get_byte_ranges(request.get_header('HTTP_RANGE'), size)
-      if ranges.nil? || ranges.length > 1
-        # No ranges, or multiple ranges (which we don't support):
-        # TODO: Support multiple byte-ranges
-        response[0] = 200
-        range = 0..size-1
-      elsif ranges.empty?
-        # Unsatisfiable. Return error, and file size:
-        response = fail(416, "Byte range unsatisfiable")
-        response[1]["Content-Range"] = "bytes */#{size}"
-        return response
-      else
-        # Partial content:
-        range = ranges[0]
-        response[0] = 206
-        response[1]["Content-Range"] = "bytes #{range.begin}-#{range.end}/#{size}"
-        size = range.end - range.begin + 1
-      end
-
-      response[2] = [response_body] unless response_body.nil?
-
-      response[1][CONTENT_LENGTH] = size.to_s
-      response[2] = make_body request, path, range
-      response
-    end
-
-    class Iterator
-      attr_reader :path, :range
-      alias :to_path :path
-
-      def initialize path, range
-        @path  = path
-        @range = range
-      end
-
-      def each
-        ::File.open(path, "rb") do |file|
-          file.seek(range.begin)
-          remaining_len = range.end-range.begin+1
-          while remaining_len > 0
-            part = file.read([8192, remaining_len].min)
-            break unless part
-            remaining_len -= part.length
-
-            yield part
-          end
-        end
-      end
-
-      def close; end
-    end
-
-    private
-
-    def make_body request, path, range
-      if request.head?
-        []
-      else
-        Iterator.new path, range
-      end
-    end
-
-    def fail(status, body, headers = {})
-      body += "\n"
-
-      [
-        status,
-        {
-          CONTENT_TYPE   => "text/plain",
-          CONTENT_LENGTH => body.size.to_s,
-          "X-Cascade" => "pass"
-        }.merge!(headers),
-        [body]
-      ]
-    end
-
-    # The MIME type for the contents of the file located at @path
-    def mime_type path, default_mime
-      Mime.mime_type(::File.extname(path), default_mime)
-    end
-
-    def filesize path
-      # If response_body is present, use its size.
-      return response_body.bytesize if response_body
-
-      #   We check via File::size? whether this file provides size info
-      #   via stat (e.g. /proc files often don't), otherwise we have to
-      #   figure it out by reading the whole file into memory.
-      ::File.size?(path) || ::File.read(path).bytesize
-    end
-
-    # By default, the response body for file requests is nil.
-    # In this case, the response body will be generated later
-    # from the file at @path
-    def response_body
-      nil
-    end
-  end
+module Rack
+  warn "Rack::File is deprecated, please use Rack::Files instead."
+  File = Files
 end