Class: WebSocket::Extensions::Parser
- Inherits:
-
Object
- Object
- WebSocket::Extensions::Parser
- Defined in:
- lib/websocket/extensions/parser.rb
Constant Summary collapse
- TOKEN =
/([!#\$%&'\*\+\-\.\^_`\|~0-9A-Za-z]+)/
- NOTOKEN =
/([^!#\$%&'\*\+\-\.\^_`\|~0-9A-Za-z])/
- QUOTED =
/"((?:\\[\x00-\x7f]|[^\x00-\x08\x0a-\x1f\x7f"])*)"/
- PARAM =
%r{#{TOKEN.source}(?:=(?:#{TOKEN.source}|#{QUOTED.source}))?}
- EXT =
%r{#{TOKEN.source}(?: *; *#{PARAM.source})*}
- EXT_LIST =
%r{^#{EXT.source}(?: *, *#{EXT.source})*$}
- NUMBER =
/^-?(0|[1-9][0-9]*)(\.[0-9]+)?$/
- ParseError =
Class.new(ArgumentError)
Class Method Summary collapse
Class Method Details
.parse_header(header) ⇒ Object
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# File 'lib/websocket/extensions/parser.rb', line 17 def self.parse_header(header) offers = Offers.new return offers if header == '' or header.nil? unless header =~ EXT_LIST raise ParseError, "Invalid Sec-WebSocket-Extensions header: #{header}" end scanner = StringScanner.new(header) value = scanner.scan(EXT) until value.nil? params = value.scan(PARAM) name = params.shift.first offer = {} params.each do |key, unquoted, quoted| if unquoted data = unquoted elsif quoted data = quoted.gsub(/\\/, '') else data = true end if data != true and data =~ NUMBER data = data =~ /\./ ? data.to_f : data.to_i(10) end if offer.has_key?(key) offer[key] = [*offer[key]] + [data] else offer[key] = data end end offers.push(name, offer) scanner.scan(/ *, */) value = scanner.scan(EXT) end offers end |
.serialize_params(name, params) ⇒ Object
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# File 'lib/websocket/extensions/parser.rb', line 60 def self.serialize_params(name, params) values = [] print = lambda do |key, value| case value when Array then value.each { |v| print[key, v] } when true then values.push(key) when Numeric then values.push(key + '=' + value.to_s) else if value =~ NOTOKEN values.push(key + '="' + value.gsub(/"/, '\"') + '"') else values.push(key + '=' + value) end end end params.keys.sort.each { |key| print[key, params[key]] } ([name] + values).join('; ') end |