/** * Copyright (C) 2018-present MongoDB, Inc. * * This program is free software: you can redistribute it and/or modify * it under the terms of the Server Side Public License, version 1, * as published by MongoDB, Inc. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * Server Side Public License for more details. * * You should have received a copy of the Server Side Public License * along with this program. If not, see * . * * As a special exception, the copyright holders give permission to link the * code of portions of this program with the OpenSSL library under certain * conditions as described in each individual source file and distribute * linked combinations including the program with the OpenSSL library. You * must comply with the Server Side Public License in all respects for * all of the code used other than as permitted herein. If you modify file(s) * with this exception, you may extend this exception to your version of the * file(s), but you are not obligated to do so. If you do not wish to do so, * delete this exception statement from your version. If you delete this * exception statement from all source files in the program, then also delete * it in the license file. */ #pragma once #include "mongo/db/fts/fts_phrase_matcher.h" #include "mongo/db/fts/unicode/codepoints.h" namespace mongo { namespace fts { class FTSLanguage; /** * UnicodeFTSPhraseMatcher * * A phrase matcher that looks for exact substring matches that ignore diacritics, and with UTF-8 * aware case folding if the phrase match is not specified as case sensitive. Optionally, the phrase * matching can be diacritic sensitive if a parameter is passed to the constructor. Additionally, if * the language string passed to the phrase matcher's constructor is Turkish (uses the special I * case fold mapping), the phrase matcher will take that into account. */ class UnicodeFTSPhraseMatcher final : public FTSPhraseMatcher { UnicodeFTSPhraseMatcher(const UnicodeFTSPhraseMatcher&) = delete; UnicodeFTSPhraseMatcher& operator=(const UnicodeFTSPhraseMatcher&) = delete; public: UnicodeFTSPhraseMatcher(const std::string& language); bool phraseMatches(const std::string& phrase, const std::string& haystack, Options options) const override; private: unicode::CaseFoldMode _caseFoldMode; }; } // namespace fts } // namespace mongo