android_icu4j/libcore_bridge/src/native/com_android_icu_util_LocaleNative.cpp

/*
 * Copyright (C) 2008 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <nativehelper/JNIHelp.h>
#include <nativehelper/jni_macros.h>

#include "ScopedIcuLocale.h"

#include "unicode/locid.h"

static jstring LocaleNative_getDisplayCountryNative(JNIEnv* env, jclass, jstring javaTargetLanguageTag, jstring javaLanguageTag) {
  ScopedIcuLocale icuLocale(env, javaLanguageTag);
  if (!icuLocale.valid()) {
    return NULL;
  }
  ScopedIcuLocale icuTargetLocale(env, javaTargetLanguageTag);
  if (!icuTargetLocale.valid()) {
    return NULL;
  }

  icu::UnicodeString str;
  icuTargetLocale.locale().getDisplayCountry(icuLocale.locale(), str);
  return jniCreateString(env, str.getBuffer(), str.length());
}

static jstring LocaleNative_getDisplayLanguageNative(JNIEnv* env, jclass, jstring javaTargetLanguageTag, jstring javaLanguageTag) {
  ScopedIcuLocale icuLocale(env, javaLanguageTag);
  if (!icuLocale.valid()) {
    return NULL;
  }
  ScopedIcuLocale icuTargetLocale(env, javaTargetLanguageTag);
  if (!icuTargetLocale.valid()) {
    return NULL;
  }

  icu::UnicodeString str;
  icuTargetLocale.locale().getDisplayLanguage(icuLocale.locale(), str);
  return jniCreateString(env, str.getBuffer(), str.length());
}

static jstring LocaleNative_getDisplayScriptNative(JNIEnv* env, jclass, jstring javaTargetLanguageTag, jstring javaLanguageTag) {
  ScopedIcuLocale icuLocale(env, javaLanguageTag);
  if (!icuLocale.valid()) {
    return NULL;
  }
  ScopedIcuLocale icuTargetLocale(env, javaTargetLanguageTag);
  if (!icuTargetLocale.valid()) {
    return NULL;
  }

  icu::UnicodeString str;
  icuTargetLocale.locale().getDisplayScript(icuLocale.locale(), str);
  return jniCreateString(env, str.getBuffer(), str.length());
}

static jstring LocaleNative_getDisplayVariantNative(JNIEnv* env, jclass, jstring javaTargetLanguageTag, jstring javaLanguageTag) {
  ScopedIcuLocale icuLocale(env, javaLanguageTag);
  if (!icuLocale.valid()) {
    return NULL;
  }
  ScopedIcuLocale icuTargetLocale(env, javaTargetLanguageTag);
  if (!icuTargetLocale.valid()) {
    return NULL;
  }

  icu::UnicodeString str;
  icuTargetLocale.locale().getDisplayVariant(icuLocale.locale(), str);
  return jniCreateString(env, str.getBuffer(), str.length());
}

static JNINativeMethod gMethods[] = {
    NATIVE_METHOD(LocaleNative, getDisplayCountryNative, "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;"),
    NATIVE_METHOD(LocaleNative, getDisplayLanguageNative, "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;"),
    NATIVE_METHOD(LocaleNative, getDisplayScriptNative, "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;"),
    NATIVE_METHOD(LocaleNative, getDisplayVariantNative, "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;"),
};

void register_com_android_icu_util_LocaleNative(JNIEnv* env) {
  jniRegisterNativeMethods(env, "com/android/icu/util/LocaleNative", gMethods, NELEM(gMethods));
}