OpenURI::Meta#charset

charset() { || ... }

# File tmp/rubies/ruby-3.3.0/lib/open-uri.rb, line 549
def charset
  type, *parameters = content_type_parse
  if pair = parameters.assoc('charset')
    pair.last.downcase
  elsif block_given?
    yield
  elsif type && %r{\Atext/} =~ type
    "utf-8" # RFC6838 4.2.1
  else
    nil
  end
end

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 that case, “utf-8” is returned as defined by RFC6838 4.2.1

See also #content_encoding #content_type also in 4.1 · 4.0 · 3.4 · 3.2 · 3.1 · 3.0

next ›#content_encoding