Fix unmatched quotes and prefixes causing search to fail (#26701)

pull/2392/head
Eugen Rochko 2023-09-01 09:43:12 +02:00 committed by GitHub
parent 872145d1c2
commit e754083e8a
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4 changed files with 200 additions and 60 deletions

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@ -6,10 +6,10 @@ class SearchQueryParser < Parslet::Parser
rule(:colon) { str(':') }
rule(:space) { match('\s').repeat(1) }
rule(:operator) { (str('+') | str('-')).as(:operator) }
rule(:prefix) { (term >> colon).as(:prefix) }
rule(:prefix) { term >> colon }
rule(:shortcode) { (colon >> term >> colon.maybe).as(:shortcode) }
rule(:phrase) { (quote >> (term >> space.maybe).repeat >> quote).as(:phrase) }
rule(:clause) { (operator.maybe >> prefix.maybe >> (phrase | term | shortcode)).as(:clause) }
rule(:clause) { (operator.maybe >> prefix.maybe.as(:prefix) >> (phrase | term | shortcode)).as(:clause) | prefix.as(:clause) | quote.as(:junk) }
rule(:query) { (clause >> space.maybe).repeat.as(:query) }
root(:query)
end

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@ -1,50 +1,32 @@
# frozen_string_literal: true
class SearchQueryTransformer < Parslet::Transform
SUPPORTED_PREFIXES = %w(
has
is
language
from
before
after
during
).freeze
class Query
attr_reader :should_clauses, :must_not_clauses, :must_clauses, :filter_clauses
attr_reader :must_not_clauses, :must_clauses, :filter_clauses
def initialize(clauses)
grouped = clauses.chunk(&:operator).to_h
@should_clauses = grouped.fetch(:should, [])
grouped = clauses.compact.chunk(&:operator).to_h
@must_not_clauses = grouped.fetch(:must_not, [])
@must_clauses = grouped.fetch(:must, [])
@filter_clauses = grouped.fetch(:filter, [])
end
def apply(search)
should_clauses.each { |clause| search = search.query.should(clause_to_query(clause)) }
must_clauses.each { |clause| search = search.query.must(clause_to_query(clause)) }
must_not_clauses.each { |clause| search = search.query.must_not(clause_to_query(clause)) }
filter_clauses.each { |clause| search = search.filter(**clause_to_filter(clause)) }
must_clauses.each { |clause| search = search.query.must(clause.to_query) }
must_not_clauses.each { |clause| search = search.query.must_not(clause.to_query) }
filter_clauses.each { |clause| search = search.filter(**clause.to_query) }
search.query.minimum_should_match(1)
end
private
def clause_to_query(clause)
case clause
when TermClause
{ multi_match: { type: 'most_fields', query: clause.term, fields: ['text', 'text.stemmed'], operator: 'and' } }
when PhraseClause
{ match_phrase: { text: { query: clause.phrase } } }
else
raise "Unexpected clause type: #{clause}"
end
end
def clause_to_filter(clause)
case clause
when PrefixClause
if clause.negated?
{ bool: { must_not: { clause.type => { clause.filter => clause.term } } } }
else
{ clause.type => { clause.filter => clause.term } }
end
else
raise "Unexpected clause type: #{clause}"
end
end
end
class Operator
@ -63,31 +45,38 @@ class SearchQueryTransformer < Parslet::Transform
end
class TermClause
attr_reader :prefix, :operator, :term
attr_reader :operator, :term
def initialize(prefix, operator, term)
@prefix = prefix
def initialize(operator, term)
@operator = Operator.symbol(operator)
@term = term
end
def to_query
{ multi_match: { type: 'most_fields', query: @term, fields: ['text', 'text.stemmed'], operator: 'and' } }
end
end
class PhraseClause
attr_reader :prefix, :operator, :phrase
attr_reader :operator, :phrase
def initialize(prefix, operator, phrase)
@prefix = prefix
def initialize(operator, phrase)
@operator = Operator.symbol(operator)
@phrase = phrase
end
def to_query
{ match_phrase: { text: { query: @phrase } } }
end
end
class PrefixClause
attr_reader :type, :filter, :operator, :term
attr_reader :operator, :prefix, :term
def initialize(prefix, operator, term, options = {})
@negated = operator == '-'
@options = options
@prefix = prefix
@negated = operator == '-'
@options = options
@operator = :filter
case prefix
@ -116,12 +105,16 @@ class SearchQueryTransformer < Parslet::Transform
@type = :range
@term = { gte: term, lte: term, time_zone: @options[:current_account]&.user_time_zone || 'UTC' }
else
raise Mastodon::SyntaxError
raise "Unknown prefix: #{prefix}"
end
end
def negated?
@negated
def to_query
if @negated
{ bool: { must_not: { @type => { @filter => @term } } } }
else
{ @type => { @filter => @term } }
end
end
private
@ -159,18 +152,26 @@ class SearchQueryTransformer < Parslet::Transform
prefix = clause[:prefix][:term].to_s if clause[:prefix]
operator = clause[:operator]&.to_s
if clause[:prefix]
if clause[:prefix] && SUPPORTED_PREFIXES.include?(prefix)
PrefixClause.new(prefix, operator, clause[:term].to_s, current_account: current_account)
elsif clause[:prefix]
TermClause.new(operator, "#{prefix} #{clause[:term]}")
elsif clause[:term]
TermClause.new(prefix, operator, clause[:term].to_s)
TermClause.new(operator, clause[:term].to_s)
elsif clause[:shortcode]
TermClause.new(prefix, operator, ":#{clause[:term]}:")
TermClause.new(operator, ":#{clause[:term]}:")
elsif clause[:phrase]
PhraseClause.new(prefix, operator, clause[:phrase].is_a?(Array) ? clause[:phrase].map { |p| p[:term].to_s }.join(' ') : clause[:phrase].to_s)
PhraseClause.new(operator, clause[:phrase].is_a?(Array) ? clause[:phrase].map { |p| p[:term].to_s }.join(' ') : clause[:phrase].to_s)
else
raise "Unexpected clause type: #{clause}"
end
end
rule(query: sequence(:clauses)) { Query.new(clauses) }
rule(junk: subtree(:junk)) do
nil
end
rule(query: sequence(:clauses)) do
Query.new(clauses)
end
end

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@ -0,0 +1,98 @@
# frozen_string_literal: true
require 'rails_helper'
require 'parslet/rig/rspec'
describe SearchQueryParser do
let(:parser) { described_class.new }
context 'with term' do
it 'consumes "hello"' do
expect(parser.term).to parse('hello')
end
end
context 'with prefix' do
it 'consumes "foo:"' do
expect(parser.prefix).to parse('foo:')
end
end
context 'with operator' do
it 'consumes "+"' do
expect(parser.operator).to parse('+')
end
it 'consumes "-"' do
expect(parser.operator).to parse('-')
end
end
context 'with shortcode' do
it 'consumes ":foo:"' do
expect(parser.shortcode).to parse(':foo:')
end
end
context 'with phrase' do
it 'consumes "hello world"' do
expect(parser.phrase).to parse('"hello world"')
end
end
context 'with clause' do
it 'consumes "foo"' do
expect(parser.clause).to parse('foo')
end
it 'consumes "-foo"' do
expect(parser.clause).to parse('-foo')
end
it 'consumes "foo:bar"' do
expect(parser.clause).to parse('foo:bar')
end
it 'consumes "-foo:bar"' do
expect(parser.clause).to parse('-foo:bar')
end
it 'consumes \'foo:"hello world"\'' do
expect(parser.clause).to parse('foo:"hello world"')
end
it 'consumes \'-foo:"hello world"\'' do
expect(parser.clause).to parse('-foo:"hello world"')
end
it 'consumes "foo:"' do
expect(parser.clause).to parse('foo:')
end
it 'consumes \'"\'' do
expect(parser.clause).to parse('"')
end
end
context 'with query' do
it 'consumes "hello -world"' do
expect(parser.query).to parse('hello -world')
end
it 'consumes \'foo "hello world"\'' do
expect(parser.query).to parse('foo "hello world"')
end
it 'consumes "foo:bar hello"' do
expect(parser.query).to parse('foo:bar hello')
end
it 'consumes \'"hello" world "\'' do
expect(parser.query).to parse('"hello" world "')
end
it 'consumes "foo:bar bar: hello"' do
expect(parser.query).to parse('foo:bar bar: hello')
end
end
end

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@ -3,16 +3,57 @@
require 'rails_helper'
describe SearchQueryTransformer do
describe 'initialization' do
let(:parser) { SearchQueryParser.new.parse('query') }
subject { described_class.new.apply(parser, current_account: nil) }
it 'sets attributes' do
transformer = described_class.new.apply(parser)
let(:parser) { SearchQueryParser.new.parse(query) }
expect(transformer.should_clauses.first).to be_nil
expect(transformer.must_clauses.first).to be_a(SearchQueryTransformer::TermClause)
expect(transformer.must_not_clauses.first).to be_nil
expect(transformer.filter_clauses.first).to be_nil
context 'with "hello world"' do
let(:query) { 'hello world' }
it 'transforms clauses' do
expect(subject.must_clauses.map(&:term)).to match_array %w(hello world)
expect(subject.must_not_clauses).to be_empty
expect(subject.filter_clauses).to be_empty
end
end
context 'with "hello -world"' do
let(:query) { 'hello -world' }
it 'transforms clauses' do
expect(subject.must_clauses.map(&:term)).to match_array %w(hello)
expect(subject.must_not_clauses.map(&:term)).to match_array %w(world)
expect(subject.filter_clauses).to be_empty
end
end
context 'with "hello is:reply"' do
let(:query) { 'hello is:reply' }
it 'transforms clauses' do
expect(subject.must_clauses.map(&:term)).to match_array %w(hello)
expect(subject.must_not_clauses).to be_empty
expect(subject.filter_clauses.map(&:term)).to match_array %w(reply)
end
end
context 'with "foo: bar"' do
let(:query) { 'foo: bar' }
it 'transforms clauses' do
expect(subject.must_clauses.map(&:term)).to match_array %w(foo bar)
expect(subject.must_not_clauses).to be_empty
expect(subject.filter_clauses).to be_empty
end
end
context 'with "foo:bar"' do
let(:query) { 'foo:bar' }
it 'transforms clauses' do
expect(subject.must_clauses.map(&:term)).to contain_exactly('foo bar')
expect(subject.must_not_clauses).to be_empty
expect(subject.filter_clauses).to be_empty
end
end
end