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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "base/android/locale_utils.h" | |
| 6 | |
| 7 #include "base/android/jni_android.h" | |
| 8 #include "base/android/jni_string.h" | |
| 9 #include "base/android/scoped_java_ref.h" | |
| 10 #include "base/logging.h" | |
| 11 #include "base/string_util.h" | |
| 12 #include "jni/locale_utils_jni.h" | |
| 13 #include "unicode/uloc.h" | |
| 14 | |
| 15 namespace base { | |
| 16 namespace android { | |
| 17 | |
| 18 std::string GetDefaultLocale() { | |
| 19 JNIEnv* env = AttachCurrentThread(); | |
| 20 ScopedJavaLocalRef<jstring> locale = Java_LocaleUtils_getDefaultLocale(env); | |
| 21 return ConvertJavaStringToUTF8(locale); | |
| 22 } | |
| 23 | |
| 24 namespace { | |
| 25 | |
| 26 // Common prototype of ICU uloc_getXXX() functions. | |
| 27 typedef int32_t (*UlocGetComponentFunc)(const char*, char*, int32_t, | |
| 28 UErrorCode*); | |
| 29 | |
| 30 std::string GetLocaleComponent(const std::string& locale, | |
| 31 UlocGetComponentFunc uloc_func, | |
| 32 int32_t max_capacity) { | |
| 33 std::string result; | |
| 34 UErrorCode error = U_ZERO_ERROR; | |
| 35 int32_t actual_length = uloc_func(locale.c_str(), | |
| 36 WriteInto(&result, max_capacity), | |
| 37 max_capacity, | |
| 38 &error); | |
| 39 DCHECK(U_SUCCESS(error)); | |
| 40 DCHECK(actual_length < max_capacity); | |
| 41 result.resize(actual_length); | |
| 42 return result; | |
| 43 } | |
| 44 | |
| 45 ScopedJavaLocalRef<jobject> NewJavaLocale( | |
| 46 JNIEnv* env, | |
| 47 ScopedJavaLocalRef<jclass> locale_class, | |
| 48 jmethodID constructor_id, | |
| 49 const std::string& locale) { | |
| 50 // TODO(wangxianzhu): Use new Locale API once Android supports scripts. | |
| 51 std::string language = GetLocaleComponent( | |
| 52 locale, uloc_getLanguage, ULOC_LANG_CAPACITY); | |
| 53 std::string country = GetLocaleComponent( | |
| 54 locale, uloc_getCountry, ULOC_COUNTRY_CAPACITY); | |
| 55 std::string variant = GetLocaleComponent( | |
| 56 locale, uloc_getVariant, ULOC_FULLNAME_CAPACITY); | |
| 57 return ScopedJavaLocalRef<jobject>( | |
| 58 env, env->NewObject( | |
| 59 locale_class.obj(), constructor_id, | |
| 60 ConvertUTF8ToJavaString(env, language).obj(), | |
| 61 ConvertUTF8ToJavaString(env, country).obj(), | |
| 62 ConvertUTF8ToJavaString(env, variant).obj())); | |
| 63 } | |
| 64 | |
| 65 } // namespace | |
| 66 | |
| 67 string16 GetDisplayNameForLocale(const std::string& locale, | |
| 68 const std::string& display_locale) { | |
| 69 JNIEnv* env = AttachCurrentThread(); | |
| 70 | |
| 71 ScopedJavaLocalRef<jclass> locale_class = GetClass(env, "java/util/Locale"); | |
| 72 jmethodID constructor_id = GetMethodID( | |
| 73 env, locale_class, "<init>", | |
| 74 "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V"); | |
| 75 ScopedJavaLocalRef<jobject> java_locale = NewJavaLocale( | |
| 76 env, locale_class, constructor_id, locale); | |
| 77 ScopedJavaLocalRef<jobject> java_display_locale = NewJavaLocale( | |
| 78 env, locale_class, constructor_id, display_locale); | |
| 79 | |
| 80 jmethodID method_id = GetMethodID(env, locale_class, "getDisplayName", | |
| 81 "(Ljava/util/Locale;)Ljava/lang/String;"); | |
| 82 ScopedJavaLocalRef<jstring> java_result( | |
| 83 env, | |
| 84 static_cast<jstring>(env->CallObjectMethod(java_locale.obj(), method_id, | |
| 85 java_display_locale.obj()))); | |
| 86 return ConvertJavaStringToUTF16(java_result); | |
| 87 } | |
| 88 | |
| 89 bool RegisterLocaleUtils(JNIEnv* env) { | |
| 90 return RegisterNativesImpl(env); | |
| 91 } | |
| 92 | |
| 93 } // namespace android | |
| 94 } // namespace base | |
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Chromium Code Reviews
Issue 10380018:
Revert 135484 - Use Android API for GetDisplayNameForLocale(). (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src/