Optimize some regex matching (#15528)

* Use Regex#match?

* Replace =~ too

* Avoid to call match? from Nil

* Keep value of Regexp.last_match

app/lib/extractor.rb

@@ -7,14 +7,14 @@ module Extractor
 
   # :yields: username, list_slug, start, end
   def extract_mentions_or_lists_with_indices(text)
-    return [] unless text =~ Twitter::Regex[:at_signs]
+    return [] unless Twitter::Regex[:at_signs].match?(text)
 
     possible_entries = []
 
     text.to_s.scan(Account::MENTION_RE) do |screen_name, _|
       match_data = $LAST_MATCH_INFO
       after = $'
-      unless after =~ Twitter::Regex[:end_mention_match]
+      unless Twitter::Regex[:end_mention_match].match?(after)
         start_position = match_data.char_begin(1) - 1
         end_position = match_data.char_end(1)
         possible_entries << {
@@ -33,7 +33,7 @@ module Extractor
   end
 
   def extract_hashtags_with_indices(text, **)
-    return [] unless text =~ /#/
+    return [] unless /#/.match?(text)
 
     tags = []
     text.scan(Tag::HASHTAG_RE) do |hash_text, _|
@@ -41,7 +41,7 @@ module Extractor
       start_position = match_data.char_begin(1) - 1
       end_position = match_data.char_end(1)
       after = $'
-      if after =~ %r{\A://}
+      if %r{\A://}.match?(after)
         hash_text.match(/(.+)(https?\Z)/) do |matched|
           hash_text = matched[1]
           end_position -= matched[2].char_length

app/lib/feed_manager.rb

@@ -396,8 +396,8 @@ class FeedManager
 
     active_filters.map! do |filter|
       if filter.whole_word
-        sb = filter.phrase =~ /\A[[:word:]]/ ? '\b' : ''
-        eb = filter.phrase =~ /[[:word:]]\z/ ? '\b' : ''
+        sb = /\A[[:word:]]/.match?(filter.phrase) ? '\b' : ''
+        eb = /[[:word:]]\z/.match?(filter.phrase) ? '\b' : ''
 
         /(?mix:#{sb}#{Regexp.escape(filter.phrase)}#{eb})/
       else
@@ -417,7 +417,7 @@ class FeedManager
       status.media_attachments.map(&:description).join("\n\n"),
     ].compact.join("\n\n")
 
-    !combined_regex.match(combined_text).nil?
+    combined_regex.match?(combined_text)
   end
 
   # Adds a status to an account's feed, returning true if a status was

app/lib/formatter.rb

@@ -222,7 +222,7 @@ class Formatter
 
     escaped = text.chars.map do |c|
       output = begin
-        if c.ord.to_s(16).length > 2 && UNICODE_ESCAPE_BLACKLIST_RE.match(c).nil?
+        if c.ord.to_s(16).length > 2 && !UNICODE_ESCAPE_BLACKLIST_RE.match?(c)
           CGI.escape(c)
         else
           c

app/lib/request.rb

@@ -145,7 +145,7 @@ class Request
   end
 
   def block_hidden_service?
-    !Rails.configuration.x.access_to_hidden_service && /\.(onion|i2p)$/.match(@url.host)
+    !Rails.configuration.x.access_to_hidden_service && /\.(onion|i2p)$/.match?(@url.host)
   end
 
   module ClientLimit

app/lib/sanitize_config.rb

@@ -28,9 +28,9 @@ class Sanitize
       return unless class_list
 
       class_list.keep_if do |e|
-        next true if e =~ /^(h|p|u|dt|e)-/ # microformats classes
-        next true if e =~ /^(mention|hashtag)$/ # semantic classes
-        next true if e =~ /^(ellipsis|invisible)$/ # link formatting classes
+        next true if /^(h|p|u|dt|e)-/.match?(e) # microformats classes
+        next true if /^(mention|hashtag)$/.match?(e) # semantic classes
+        next true if /^(ellipsis|invisible)$/.match?(e) # link formatting classes
       end
 
       node['class'] = class_list.join(' ')

app/models/concerns/omniauthable.rb

@@ -57,7 +57,7 @@ module Omniauthable
 
       user = User.new(user_params_from_auth(email, auth))
 
-      user.account.avatar_remote_url = auth.info.image if auth.info.image =~ /\A#{URI::DEFAULT_PARSER.make_regexp(%w(http https))}\z/
+      user.account.avatar_remote_url = auth.info.image if /\A#{URI::DEFAULT_PARSER.make_regexp(%w(http https))}\z/.match?(auth.info.image)
       user.skip_confirmation!
       user.save!
       user

app/services/account_search_service.rb

@@ -175,7 +175,7 @@ class AccountSearchService < BaseService
   end
 
   def username_complete?
-    query.include?('@') && "@#{query}" =~ /\A#{Account::MENTION_RE}\Z/
+    query.include?('@') && "@#{query}".match?(/\A#{Account::MENTION_RE}\Z/)
   end
 
   def likely_acct?

app/services/search_service.rb

@@ -72,7 +72,7 @@ class SearchService < BaseService
   end
 
   def url_query?
-    @resolve && @query =~ /\Ahttps?:\/\//
+    @resolve && /\Ahttps?:\/\//.match?(@query)
   end
 
   def url_resource_results

app/validators/blacklisted_email_validator.rb

@@ -22,7 +22,7 @@ class BlacklistedEmailValidator < ActiveModel::Validator
     domains = Rails.configuration.x.email_domains_blacklist.gsub('.', '\.')
     regexp  = Regexp.new("@(.+\\.)?(#{domains})", true)
 
-    @email =~ regexp
+    regexp.match?(@email)
   end
 
   def not_on_whitelist?

app/validators/html_validator.rb

@@ -15,6 +15,6 @@ class HtmlValidator < ActiveModel::EachValidator
 
   def html_errors(str)
     fragment = Nokogiri::HTML.fragment(options[:wrap_with] ? "<#{options[:wrap_with]}>#{str}</#{options[:wrap_with]}>" : str)
-    fragment.errors.select { |error| ERROR_RE =~ error.message }
+    fragment.errors.select { |error| ERROR_RE.match?(error.message) }
   end
 end

config/initializers/open_uri_redirection.rb

@@ -3,6 +3,6 @@ require 'open-uri'
 module OpenURI
   def self.redirectable?(uri1, uri2) # :nodoc:
     uri1.scheme.casecmp(uri2.scheme).zero? ||
-      (/\A(?:http|https|ftp)\z/i =~ uri1.scheme && /\A(?:http|https|ftp)\z/i =~ uri2.scheme)
+      (/\A(?:http|https|ftp)\z/i.match?(uri1.scheme) && /\A(?:http|https|ftp)\z/i.match?(uri2.scheme))
   end
 end

config/initializers/rack_attack.rb

@@ -78,7 +78,7 @@ class Rack::Attack
   API_DELETE_STATUS_REGEX = /\A\/api\/v1\/statuses\/[\d]+/.freeze
 
   throttle('throttle_api_delete', limit: 30, period: 30.minutes) do |req|
-    req.authenticated_user_id if (req.post? && req.path =~ API_DELETE_REBLOG_REGEX) || (req.delete? && req.path =~ API_DELETE_STATUS_REGEX)
+    req.authenticated_user_id if (req.post? && req.path.match?(API_DELETE_REBLOG_REGEX)) || (req.delete? && req.path.match?(API_DELETE_STATUS_REGEX))
   end
 
   throttle('throttle_sign_up_attempts/ip', limit: 25, period: 5.minutes) do |req|

lib/mastodon/domains_cli.rb

@@ -93,7 +93,7 @@ module Mastodon
 
       work_unit = ->(domain) do
         next if stats.key?(domain)
-        next if options[:exclude_suspended] && domain.match(blocked_domains)
+        next if options[:exclude_suspended] && domain.match?(blocked_domains)
 
         stats[domain] = nil