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      1 /*
      2  * Copyright (C) 2014 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 SCOPED_ICU_LOCALE_H_included
     18 #define SCOPED_ICU_LOCALE_H_included
     19 
     20 #include <nativehelper/JNIHelp.h>
     21 #include <nativehelper/ScopedUtfChars.h>
     22 #include "unicode/locid.h"
     23 
     24 class ScopedIcuLocale {
     25  public:
     26   ScopedIcuLocale(JNIEnv* env, jstring javaLocaleName) : mEnv(env) {
     27     mLocale.setToBogus();
     28 
     29     if (javaLocaleName == NULL) {
     30       jniThrowNullPointerException(mEnv, "javaLocaleName == null");
     31       return;
     32     }
     33 
     34     const ScopedUtfChars localeName(env, javaLocaleName);
     35     if (localeName.c_str() == NULL) {
     36       return;
     37     }
     38 
     39     mLocale = icu::Locale::createFromName(localeName.c_str());
     40   }
     41 
     42   ~ScopedIcuLocale() {
     43   }
     44 
     45   bool valid() const {
     46     return !mLocale.isBogus();
     47   }
     48 
     49   icu::Locale& locale() {
     50     return mLocale;
     51   }
     52 
     53  private:
     54   JNIEnv* const mEnv;
     55   icu::Locale mLocale;
     56 
     57   // Disallow copy and assignment.
     58   ScopedIcuLocale(const ScopedIcuLocale&);
     59   void operator=(const ScopedIcuLocale&);
     60 };
     61 
     62 #endif  // SCOPED_ICU_LOCALE_H_included
     63