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# frozen_string_literal: true
module Gitlab
module Search
class Query < SimpleDelegator
include EncodingHelper
QUOTES_REGEXP = %r{\A"|"\Z}.freeze
TOKEN_WITH_QUOTES_REGEXP = %r{\s(?=(?:[^"]|"[^"]*")*$)}.freeze
def initialize(query, filter_opts = {}, &block)
@raw_query = query.dup
@filters = []
@filter_options = { default_parser: :downcase.to_proc }.merge(filter_opts)
self.instance_eval(&block) if block_given?
@query = Gitlab::Search::ParsedQuery.new(*extract_filters)
# set the ParsedQuery as our default delegator thanks to SimpleDelegator
super(@query)
end
private
def filter(name, **attributes)
filter = {
parser: @filter_options[:default_parser],
name: name
}.merge(attributes)
@filters << filter
end
def filter_options(**options)
@filter_options.merge!(options)
end
def extract_filters
fragments = []
query_tokens = parse_raw_query
filters = @filters.each_with_object([]) do |filter, parsed_filters|
match = query_tokens.find { |part| part =~ /\A-?#{filter[:name]}:/ }
next unless match
input = match.split(':')[1..].join
next if input.empty?
filter[:negated] = match.start_with?("-")
filter[:value] = parse_filter(filter, input.gsub(QUOTES_REGEXP, ''))
filter[:regex_value] = Regexp.escape(filter[:value]).gsub('\*', '.*?')
fragments << match
parsed_filters << filter
end
query = (query_tokens - fragments).join(' ')
query = '*' if query.empty?
[query, filters]
end
def parse_filter(filter, input)
result = filter[:parser].call(input)
@filter_options[:encode_binary] ? encode_binary(result) : result
end
def parse_raw_query
# Positive lookahead for any non-quote char or even number of quotes
# for example '"search term" path:"foo bar.txt"' would break into
# ["search term", "path:\"foo bar.txt\""]
@raw_query.split(TOKEN_WITH_QUOTES_REGEXP).reject(&:empty?)
end
end
end
end
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