From c082a7aae4a41b52e58c7dea43e7e9c6c41d11ad Mon Sep 17 00:00:00 2001 From: Aaron Patterson Date: Thu, 28 Jan 2016 16:08:03 -0800 Subject: speed up accept header parsing a bit. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Accept header is taken from what Safari on El Capitan sends: ```ruby require 'benchmark/ips' require 'action_dispatch/http/mime_type' require 'active_support/all' accept = 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8' Benchmark.ips do |x| x.report "omg" do Mime::Type.parse(accept) end end ``` Before: ``` [aaron@TC actionpack (master)]$ be ruby ../x.rb Calculating ------------------------------------- omg 3.181k i/100ms ------------------------------------------------- omg 35.062k (±12.8%) i/s - 174.955k [aaron@TC actionpack (master)]$ be ruby ../x.rb Calculating ------------------------------------- omg 3.153k i/100ms ------------------------------------------------- omg 33.724k (±12.4%) i/s - 167.109k [aaron@TC actionpack (master)]$ be ruby ../x.rb Calculating ------------------------------------- omg 3.575k i/100ms ------------------------------------------------- omg 37.251k (±10.4%) i/s - 185.900k ``` After: ``` [aaron@TC actionpack (master)]$ be ruby ../x.rb Calculating ------------------------------------- omg 3.365k i/100ms ------------------------------------------------- omg 40.069k (±16.1%) i/s - 198.535k [aaron@TC actionpack (master)]$ be ruby ../x.rb Calculating ------------------------------------- omg 4.168k i/100ms ------------------------------------------------- omg 47.596k (± 7.7%) i/s - 237.576k [aaron@TC actionpack (master)]$ be ruby ../x.rb Calculating ------------------------------------- omg 4.282k i/100ms ------------------------------------------------- omg 43.626k (±17.7%) i/s - 209.818k ``` --- actionpack/lib/action_dispatch/http/mime_type.rb | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) (limited to 'actionpack/lib/action_dispatch/http/mime_type.rb') diff --git a/actionpack/lib/action_dispatch/http/mime_type.rb b/actionpack/lib/action_dispatch/http/mime_type.rb index 065d7dd355..4672ea7199 100644 --- a/actionpack/lib/action_dispatch/http/mime_type.rb +++ b/actionpack/lib/action_dispatch/http/mime_type.rb @@ -1,3 +1,5 @@ +# -*- frozen-string-literal: true -*- + require 'singleton' require 'active_support/core_ext/module/attribute_accessors' require 'active_support/core_ext/string/starts_ends_with' @@ -157,7 +159,7 @@ module Mime end class << self - TRAILING_STAR_REGEXP = /(text|application)\/\*/ + TRAILING_STAR_REGEXP = /^(text|application)\/\*/ PARAMETER_SEPARATOR_REGEXP = /;\s*\w+="?\w+"?/ def register_callback(&block) @@ -200,15 +202,16 @@ module Mime list, index = [], 0 accept_header.split(',').each do |header| params, q = header.split(PARAMETER_SEPARATOR_REGEXP) - if params.present? - params.strip! - params = parse_trailing_star(params) || [params] + next unless params + params.strip! + next if params.empty? + + params = parse_trailing_star(params) || [params] - params.each do |m| - list << AcceptItem.new(index, m.to_s, q) - index += 1 - end + params.each do |m| + list << AcceptItem.new(index, m.to_s, q) + index += 1 end end AcceptList.sort! list -- cgit v1.2.3