+++ /dev/null
-require 'set'
-
-module Mime
- SET = []
- EXTENSION_LOOKUP = Hash.new { |h, k| h[k] = Type.new(k) unless k.blank? }
- LOOKUP = Hash.new { |h, k| h[k] = Type.new(k) unless k.blank? }
-
- # Encapsulates the notion of a mime type. Can be used at render time, for example, with:
- #
- # class PostsController < ActionController::Base
- # def show
- # @post = Post.find(params[:id])
- #
- # respond_to do |format|
- # format.html
- # format.ics { render :text => post.to_ics, :mime_type => Mime::Type["text/calendar"] }
- # format.xml { render :xml => @people.to_xml }
- # end
- # end
- # end
- class Type
- @@html_types = Set.new [:html, :all]
- cattr_reader :html_types
-
- # These are the content types which browsers can generate without using ajax, flash, etc
- # i.e. following a link, getting an image or posting a form. CSRF protection
- # only needs to protect against these types.
- @@browser_generated_types = Set.new [:html, :url_encoded_form, :multipart_form, :text]
- cattr_reader :browser_generated_types
-
-
- @@unverifiable_types = Set.new [:text, :json, :csv, :xml, :rss, :atom, :yaml]
- def self.unverifiable_types
- ActiveSupport::Deprecation.warn("unverifiable_types is deprecated and has no effect", caller)
- @@unverifiable_types
- end
-
- # A simple helper class used in parsing the accept header
- class AcceptItem #:nodoc:
- attr_accessor :order, :name, :q
-
- def initialize(order, name, q=nil)
- @order = order
- @name = name.strip
- q ||= 0.0 if @name == Mime::ALL # default wilcard match to end of list
- @q = ((q || 1.0).to_f * 100).to_i
- end
-
- def to_s
- @name
- end
-
- def <=>(item)
- result = item.q <=> q
- result = order <=> item.order if result == 0
- result
- end
-
- def ==(item)
- name == (item.respond_to?(:name) ? item.name : item)
- end
- end
-
- class << self
- def lookup(string)
- LOOKUP[string]
- end
-
- def lookup_by_extension(extension)
- EXTENSION_LOOKUP[extension]
- end
-
- # Registers an alias that's not used on mime type lookup, but can be referenced directly. Especially useful for
- # rendering different HTML versions depending on the user agent, like an iPhone.
- def register_alias(string, symbol, extension_synonyms = [])
- register(string, symbol, [], extension_synonyms, true)
- end
-
- def register(string, symbol, mime_type_synonyms = [], extension_synonyms = [], skip_lookup = false)
- Mime.instance_eval { const_set symbol.to_s.upcase, Type.new(string, symbol, mime_type_synonyms) }
-
- SET << Mime.const_get(symbol.to_s.upcase)
-
- ([string] + mime_type_synonyms).each { |string| LOOKUP[string] = SET.last } unless skip_lookup
- ([symbol.to_s] + extension_synonyms).each { |ext| EXTENSION_LOOKUP[ext] = SET.last }
- end
-
- def parse(accept_header)
- if accept_header !~ /,/
- [Mime::Type.lookup(accept_header)]
- else
- # keep track of creation order to keep the subsequent sort stable
- list = []
- accept_header.split(/,/).each_with_index do |header, index|
- params, q = header.split(/;\s*q=/)
- if params
- params.strip!
- list << AcceptItem.new(index, params, q) unless params.empty?
- end
- end
- list.sort!
-
- # Take care of the broken text/xml entry by renaming or deleting it
- text_xml = list.index("text/xml")
- app_xml = list.index(Mime::XML.to_s)
-
- if text_xml && app_xml
- # set the q value to the max of the two
- list[app_xml].q = [list[text_xml].q, list[app_xml].q].max
-
- # make sure app_xml is ahead of text_xml in the list
- if app_xml > text_xml
- list[app_xml], list[text_xml] = list[text_xml], list[app_xml]
- app_xml, text_xml = text_xml, app_xml
- end
-
- # delete text_xml from the list
- list.delete_at(text_xml)
-
- elsif text_xml
- list[text_xml].name = Mime::XML.to_s
- end
-
- # Look for more specific XML-based types and sort them ahead of app/xml
-
- if app_xml
- idx = app_xml
- app_xml_type = list[app_xml]
-
- while(idx < list.length)
- type = list[idx]
- break if type.q < app_xml_type.q
- if type.name =~ /\+xml$/
- list[app_xml], list[idx] = list[idx], list[app_xml]
- app_xml = idx
- end
- idx += 1
- end
- end
-
- list.map! { |i| Mime::Type.lookup(i.name) }.uniq!
- list
- end
- end
- end
-
- def initialize(string, symbol = nil, synonyms = [])
- @symbol, @synonyms = symbol, synonyms
- @string = string
- end
-
- def to_s
- @string
- end
-
- def to_str
- to_s
- end
-
- def to_sym
- @symbol || @string.to_sym
- end
-
- def ===(list)
- if list.is_a?(Array)
- (@synonyms + [ self ]).any? { |synonym| list.include?(synonym) }
- else
- super
- end
- end
-
- def ==(mime_type)
- return false if mime_type.blank?
- (@synonyms + [ self ]).any? do |synonym|
- synonym.to_s == mime_type.to_s || synonym.to_sym == mime_type.to_sym
- end
- end
-
- def =~(mime_type)
- return false if mime_type.blank?
- regexp = Regexp.new(Regexp.quote(mime_type.to_s))
- (@synonyms + [ self ]).any? do |synonym|
- synonym.to_s =~ regexp
- end
- end
-
- # Returns true if Action Pack should check requests using this Mime Type for possible request forgery. See
- # ActionController::RequestForgeryProtection.
- def verify_request?
- browser_generated?
- end
-
- def html?
- @@html_types.include?(to_sym) || @string =~ /html/
- end
-
- def browser_generated?
- @@browser_generated_types.include?(to_sym)
- end
-
- private
- def method_missing(method, *args)
- if method.to_s =~ /(\w+)\?$/
- $1.downcase.to_sym == to_sym
- else
- super
- end
- end
- end
-end
-
-require 'action_controller/mime_types'
projects / feedcatcher.git / blobdiff