# File actionpack/lib/action_controller/mime_type.rb, line 51
51:       def lookup(string)
52:         LOOKUP[string]
53:       end

    # File actionpack/lib/action_controller/mime_type.rb, line 55
55:       def lookup_by_extension(extension)
56:         EXTENSION_LOOKUP[extension]
57:       end

     # File actionpack/lib/action_controller/mime_type.rb, line 129
129:     def initialize(string, symbol = nil, synonyms = [])
130:       @symbol, @synonyms = symbol, synonyms
131:       @string = string
132:     end

     # File actionpack/lib/action_controller/mime_type.rb, line 74
 74:       def parse(accept_header)
 75:         # keep track of creation order to keep the subsequent sort stable
 76:         list = []
 77:         accept_header.split(/,/).each_with_index do |header, index| 
 78:           params, q = header.split(/;\s*q=/)       
 79:           if params
 80:             params.strip!          
 81:             list << AcceptItem.new(index, params, q) unless params.empty?
 82:           end
 83:         end
 84:         list.sort!
 85: 
 86:         # Take care of the broken text/xml entry by renaming or deleting it
 87:         text_xml = list.index("text/xml")
 88:         app_xml = list.index(Mime::XML.to_s)
 89: 
 90:         if text_xml && app_xml
 91:           # set the q value to the max of the two
 92:           list[app_xml].q = [list[text_xml].q, list[app_xml].q].max
 93: 
 94:           # make sure app_xml is ahead of text_xml in the list
 95:           if app_xml > text_xml
 96:             list[app_xml], list[text_xml] = list[text_xml], list[app_xml]
 97:             app_xml, text_xml = text_xml, app_xml
 98:           end
 99: 
100:           # delete text_xml from the list
101:           list.delete_at(text_xml)
102: 
103:         elsif text_xml
104:           list[text_xml].name = Mime::XML.to_s
105:         end
106: 
107:         # Look for more specific XML-based types and sort them ahead of app/xml
108: 
109:         if app_xml
110:           idx = app_xml
111:           app_xml_type = list[app_xml]
112: 
113:           while(idx < list.length)
114:             type = list[idx]
115:             break if type.q < app_xml_type.q
116:             if type.name =~ /\+xml$/
117:               list[app_xml], list[idx] = list[idx], list[app_xml]
118:               app_xml = idx
119:             end
120:             idx += 1
121:           end
122:         end
123: 
124:         list.map! { |i| Mime::Type.lookup(i.name) }.uniq!
125:         list
126:       end

    # File actionpack/lib/action_controller/mime_type.rb, line 65
65:       def register(string, symbol, mime_type_synonyms = [], extension_synonyms = [], skip_lookup = false)
66:         Mime.instance_eval { const_set symbol.to_s.upcase, Type.new(string, symbol, mime_type_synonyms) }
67: 
68:         SET << Mime.const_get(symbol.to_s.upcase)
69: 
70:         ([string] + mime_type_synonyms).each { |string| LOOKUP[string] = SET.last } unless skip_lookup
71:         ([symbol.to_s] + extension_synonyms).each { |ext| EXTENSION_LOOKUP[ext] = SET.last }
72:       end

    # File actionpack/lib/action_controller/mime_type.rb, line 61
61:       def register_alias(string, symbol, extension_synonyms = [])
62:         register(string, symbol, [], extension_synonyms, true)
63:       end

     # File actionpack/lib/action_controller/mime_type.rb, line 154
154:     def ==(mime_type)
155:       return false if mime_type.blank?
156:       (@synonyms + [ self ]).any? do |synonym| 
157:         synonym.to_s == mime_type.to_s || synonym.to_sym == mime_type.to_sym 
158:       end
159:     end

     # File actionpack/lib/action_controller/mime_type.rb, line 146
146:     def ===(list)
147:       if list.is_a?(Array)
148:         (@synonyms + [ self ]).any? { |synonym| list.include?(synonym) }
149:       else
150:         super
151:       end
152:     end

     # File actionpack/lib/action_controller/mime_type.rb, line 167
167:     def html?
168:       @@html_types.include?(to_sym) || @string =~ /html/
169:     end

     # File actionpack/lib/action_controller/mime_type.rb, line 134
134:     def to_s
135:       @string
136:     end

     # File actionpack/lib/action_controller/mime_type.rb, line 138
138:     def to_str
139:       to_s
140:     end

     # File actionpack/lib/action_controller/mime_type.rb, line 142
142:     def to_sym
143:       @symbol || @string.to_sym
144:     end

     # File actionpack/lib/action_controller/mime_type.rb, line 163
163:     def verify_request?
164:       !@@unverifiable_types.include?(to_sym)
165:     end