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require 'rack/request'
module Rack::Accept
# A container class for convenience methods when Rack::Accept is used on the
# request level as Rack middleware. Instances of this class also manage a
# lightweight cache of various header instances to speed up execution.
class Request < Rack::Request
attr_reader :env
def initialize(env)
@env = env
end
# Provides access to the Rack::Accept::MediaType instance for this request.
def media_type
@media_type ||= MediaType.new(env['HTTP_ACCEPT'])
end
# Provides access to the Rack::Accept::Charset instance for this request.
def charset
@charset ||= Charset.new(env['HTTP_ACCEPT_CHARSET'])
end
# Provides access to the Rack::Accept::Encoding instance for this request.
def encoding
@encoding ||= Encoding.new(env['HTTP_ACCEPT_ENCODING'])
end
# Provides access to the Rack::Accept::Language instance for this request.
def language
@language ||= Language.new(env['HTTP_ACCEPT_LANGUAGE'])
end
# Returns true if the +Accept+ request header indicates the given media
# type is acceptable, false otherwise.
def media_type?(value)
media_type.accept?(value)
end
# Returns true if the +Accept-Charset+ request header indicates the given
# character set is acceptable, false otherwise.
def charset?(value)
charset.accept?(value)
end
# Returns true if the +Accept-Encoding+ request header indicates the given
# encoding is acceptable, false otherwise.
def encoding?(value)
encoding.accept?(value)
end
# Returns true if the +Accept-Language+ request header indicates the given
# language is acceptable, false otherwise.
def language?(value)
language.accept?(value)
end
# Determines the best media type to use in a response from the given media
# types, if any is acceptable. For more information on how this value is
# determined, see the documentation for
# Rack::Accept::Header::PublicInstanceMethods#sort.
def best_media_type(values)
media_type.best_of(values)
end
# Determines the best character set to use in a response from the given
# character sets, if any is acceptable. For more information on how this
# value is determined, see the documentation for
# Rack::Accept::Header::PublicInstanceMethods#sort.
def best_charset(values)
charset.best_of(values)
end
# Determines the best encoding to use in a response from the given
# encodings, if any is acceptable. For more information on how this value
# is determined, see the documentation for
# Rack::Accept::Header::PublicInstanceMethods#sort.
def best_encoding(values)
encoding.best_of(values)
end
# Determines the best language to use in a response from the given
# languages, if any is acceptable. For more information on how this value
# is determined, see the documentation for
# Rack::Accept::Header::PublicInstanceMethods#sort.
def best_language(values)
language.best_of(values)
end
end
end
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