Mixin for holding meta-information.
returns a charset parameter in Content-Type field. It is downcased for canonicalization.
If charset parameter is not given but a block is given, the block is called and its result is returned. It can be used to guess charset.
If charset parameter and block is not given, nil is returned except text type in HTTP. In that case, “iso-8859-1” is returned as defined by RFC2616 3.7.1.
# File open-uri.rb, line 495 def charset type, *parameters = content_type_parse if pair = parameters.assoc('charset') pair.last.downcase elsif block_given? yield elsif type && %r{\Atext/} =~ type && @base_uri && /\Ahttp\z/i =~ @base_uri.scheme "iso-8859-1" # RFC2616 3.7.1 else nil end end
returns a list of encodings in Content-Encoding field as an Array of String. The encodings are downcased for canonicalization.
# File open-uri.rb, line 512 def content_encoding v = @meta['content-encoding'] if v && %r{\A#{RE_LWS}?#{RE_TOKEN}#{RE_LWS}?(?:,#{RE_LWS}?#{RE_TOKEN}#{RE_LWS}?)*}o =~ v v.scan(RE_TOKEN).map {|content_coding| content_coding.downcase} else [] end end