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      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 LIBTEXTCLASSIFIER_UTILS_CALENDAR_CALENDAR_JAVAICU_H_
     18 #define LIBTEXTCLASSIFIER_UTILS_CALENDAR_CALENDAR_JAVAICU_H_
     19 
     20 #include <jni.h>
     21 #include <memory>
     22 #include <string>
     23 
     24 #include "annotator/types.h"
     25 #include "utils/base/integral_types.h"
     26 #include "utils/calendar/calendar-common.h"
     27 #include "utils/java/jni-cache.h"
     28 #include "utils/java/scoped_local_ref.h"
     29 
     30 namespace libtextclassifier3 {
     31 
     32 class Calendar {
     33  public:
     34   explicit Calendar(JniCache* jni_cache);
     35   bool Initialize(const std::string& time_zone, const std::string& locale,
     36                   int64 time_ms_utc);
     37   bool AddSecond(int value) const;
     38   bool AddMinute(int value) const;
     39   bool AddHourOfDay(int value) const;
     40   bool AddDayOfMonth(int value) const;
     41   bool AddYear(int value) const;
     42   bool AddMonth(int value) const;
     43   bool GetDayOfWeek(int* value) const;
     44   bool GetFirstDayOfWeek(int* value) const;
     45   bool GetTimeInMillis(int64* value) const;
     46   bool SetZoneOffset(int value) const;
     47   bool SetDstOffset(int value) const;
     48   bool SetYear(int value) const;
     49   bool SetMonth(int value) const;
     50   bool SetDayOfYear(int value) const;
     51   bool SetDayOfMonth(int value) const;
     52   bool SetDayOfWeek(int value) const;
     53   bool SetHourOfDay(int value) const;
     54   bool SetMinute(int value) const;
     55   bool SetSecond(int value) const;
     56   bool SetMillisecond(int value) const;
     57 
     58  private:
     59   JniCache* jni_cache_;
     60   JNIEnv* jenv_;
     61   ScopedLocalRef<jobject> calendar_;
     62 };
     63 
     64 class CalendarLib {
     65  public:
     66   CalendarLib();
     67   explicit CalendarLib(const std::shared_ptr<JniCache>& jni_cache);
     68 
     69   // Returns false (dummy version).
     70   bool InterpretParseData(const DateParseData& parse_data,
     71                           int64 reference_time_ms_utc,
     72                           const std::string& reference_timezone,
     73                           const std::string& reference_locale,
     74                           int64* interpreted_time_ms_utc,
     75                           DatetimeGranularity* granularity) const {
     76     Calendar calendar(jni_cache_.get());
     77     if (!impl_.InterpretParseData(parse_data, reference_time_ms_utc,
     78                                   reference_timezone, reference_locale,
     79                                   &calendar, granularity)) {
     80       return false;
     81     }
     82     return calendar.GetTimeInMillis(interpreted_time_ms_utc);
     83   }
     84 
     85   DatetimeGranularity GetGranularity(const DateParseData& data) const {
     86     return impl_.GetGranularity(data);
     87   }
     88 
     89  private:
     90   std::shared_ptr<JniCache> jni_cache_;
     91   calendar::CalendarLibTempl<Calendar> impl_;
     92 };
     93 
     94 }  // namespace libtextclassifier3
     95 
     96 #endif  // LIBTEXTCLASSIFIER_UTILS_CALENDAR_CALENDAR_JAVAICU_H_
     97