1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef NLP_SAFT_COMPONENTS_LANG_ID_MOBILE_SCRIPT_SCRIPT_DETECTOR_H_ 18 #define NLP_SAFT_COMPONENTS_LANG_ID_MOBILE_SCRIPT_SCRIPT_DETECTOR_H_ 19 20 #include "lang_id/common/registry.h" 21 22 namespace libtextclassifier3 { 23 namespace mobile { 24 25 // Base class for Unicode script detectors. Individual detectors may differ in 26 // code size, speed, precision, etc. You can use the registration mechanism to 27 // get the ScriptDetector that's most appropriate to your application. 28 class ScriptDetector : public RegisterableClass<ScriptDetector> { 29 public: 30 virtual ~ScriptDetector() = default; 31 32 // Returns a number between 0 and GetMaxScript() (inclusive on both ends) that 33 // indicates the script of the UTF8 character that starts at address |s| and 34 // has |num_bytes|. 35 virtual int GetScript(const char *s, int num_bytes) const = 0; 36 37 // Returns max result that can be returned by GetScript(). 38 virtual int GetMaxScript() const = 0; 39 }; 40 41 SAFTM_DECLARE_CLASS_REGISTRY_NAME(ScriptDetector); 42 43 } // namespace mobile 44 } // namespace nlp_saft 45 46 #endif // NLP_SAFT_COMPONENTS_LANG_ID_MOBILE_SCRIPT_SCRIPT_DETECTOR_H_ 47
