diff --git a/app/models/glitch/keyword_mute.rb b/app/models/glitch/keyword_mute.rb index 823e252d3..20fd89d9b 100644 --- a/app/models/glitch/keyword_mute.rb +++ b/app/models/glitch/keyword_mute.rb @@ -19,35 +19,49 @@ class Glitch::KeywordMute < ApplicationRecord after_commit :invalidate_cached_matcher def self.matcher_for(account_id) - Rails.cache.fetch("keyword_mutes:matcher:#{account_id}") { Matcher.new(account_id) } + Matcher.new(account_id) end private def invalidate_cached_matcher - Rails.cache.delete("keyword_mutes:matcher:#{account_id}") + Rails.cache.delete("keyword_mutes:regex:#{account_id}") end class Matcher + attr_reader :account_id attr_reader :regex def initialize(account_id) - re = [].tap do |arr| - Glitch::KeywordMute.where(account_id: account_id).select(:keyword, :id, :whole_word).find_each do |m| - boundary = m.whole_word ? '\b' : '' - arr << "#{boundary}#{Regexp.escape(m.keyword.strip)}#{boundary}" + @account_id = account_id + @regex = Rails.cache.fetch("keyword_mutes:regex:#{account_id}") { regex_for_account } + end + + def keywords + Glitch::KeywordMute. + where(account_id: account_id). + select(:keyword, :id, :whole_word) + end + + def regex_for_account + re_text = [].tap do |arr| + keywords.find_each do |kw| + arr << (kw.whole_word ? boundary_regex_for_keyword(kw.keyword) : Regexp.escape(kw.keyword)) end end.join('|') - @regex = /#{re}/i unless re.empty? + /#{re_text}/i unless re_text.empty? end - def =~(str) - regex ? regex =~ str : false + def boundary_regex_for_keyword(keyword) + sb = keyword =~ /\A[[:word:]]/ ? '\b' : '' + eb = keyword =~ /[[:word:]]\Z/ ? '\b' : '' + + "#{sb}#{Regexp.escape(keyword)}#{eb}" end - def matches?(str) - !!(regex =~ str) + def =~(str) + regex ? regex =~ str : false end end end diff --git a/spec/models/glitch/keyword_mute_spec.rb b/spec/models/glitch/keyword_mute_spec.rb index 108cdafec..95e59defc 100644 --- a/spec/models/glitch/keyword_mute_spec.rb +++ b/spec/models/glitch/keyword_mute_spec.rb @@ -7,7 +7,7 @@ RSpec.describe Glitch::KeywordMute, type: :model do describe '.matcher_for' do let(:matcher) { Glitch::KeywordMute.matcher_for(alice) } - describe 'with no Glitch::KeywordMutes for an account' do + describe 'with no mutes' do before do Glitch::KeywordMute.delete_all end @@ -17,7 +17,7 @@ RSpec.describe Glitch::KeywordMute, type: :model do end end - describe 'with Glitch::KeywordMutes for an account' do + describe 'with mutes' do it 'does not match keywords set by a different account' do Glitch::KeywordMute.create!(account: bob, keyword: 'take') @@ -63,7 +63,13 @@ RSpec.describe Glitch::KeywordMute, type: :model do it 'matches keywords surrounded by non-alphanumeric ornamentation' do Glitch::KeywordMute.create!(account: alice, keyword: 'hot') - expect(matcher =~ 'This is a ~*HOT*~ take').to be_truthy + expect(matcher =~ '(hot take)').to be_truthy + end + + it 'escapes metacharacters in keywords' do + Glitch::KeywordMute.create!(account: alice, keyword: '(hot take)') + + expect(matcher =~ '(hot take)').to be_truthy end it 'uses case-folding rules appropriate for more than just English' do