1 /*
2 * Copyright (C) 2010 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 #define LOG_TAG "NativePluralRules"
18
19 #include "IcuUtilities.h"
20 #include "JNIHelp.h"
21 #include "JniConstants.h"
22 #include "JniException.h"
23 #include "ScopedUtfChars.h"
24 #include "unicode/plurrule.h"
25
26 #include <string>
27
toPluralRules(jlong address)28 static icu::PluralRules* toPluralRules(jlong address) {
29 return reinterpret_cast<icu::PluralRules*>(static_cast<uintptr_t>(address));
30 }
31
NativePluralRules_finalizeImpl(JNIEnv *,jclass,jlong address)32 static void NativePluralRules_finalizeImpl(JNIEnv*, jclass, jlong address) {
33 delete toPluralRules(address);
34 }
35
NativePluralRules_forLocaleImpl(JNIEnv * env,jclass,jstring javaLocaleName)36 static jlong NativePluralRules_forLocaleImpl(JNIEnv* env, jclass, jstring javaLocaleName) {
37 // The icu4c PluralRules returns a "other: n" default rule for the deprecated locales Java uses.
38 // Work around this by translating back to the current language codes.
39 std::string localeName(ScopedUtfChars(env, javaLocaleName).c_str());
40 if (localeName[0] == 'i' && localeName[1] == 'w') {
41 localeName[0] = 'h';
42 localeName[1] = 'e';
43 } else if (localeName[0] == 'i' && localeName[1] == 'n') {
44 localeName[0] = 'i';
45 localeName[1] = 'd';
46 } else if (localeName[0] == 'j' && localeName[1] == 'i') {
47 localeName[0] = 'y';
48 localeName[1] = 'i';
49 }
50
51 icu::Locale locale = icu::Locale::createFromName(localeName.c_str());
52 UErrorCode status = U_ZERO_ERROR;
53 icu::PluralRules* result = icu::PluralRules::forLocale(locale, status);
54 maybeThrowIcuException(env, "PluralRules::forLocale", status);
55 return reinterpret_cast<uintptr_t>(result);
56 }
57
NativePluralRules_quantityForIntImpl(JNIEnv *,jclass,jlong address,jint value)58 static jint NativePluralRules_quantityForIntImpl(JNIEnv*, jclass, jlong address, jint value) {
59 icu::UnicodeString keyword = toPluralRules(address)->select(value);
60 if (keyword == "zero") {
61 return 0;
62 } else if (keyword == "one") {
63 return 1;
64 } else if (keyword == "two") {
65 return 2;
66 } else if (keyword == "few") {
67 return 3;
68 } else if (keyword == "many") {
69 return 4;
70 } else {
71 return 5;
72 }
73 }
74
75 static JNINativeMethod gMethods[] = {
76 NATIVE_METHOD(NativePluralRules, finalizeImpl, "(J)V"),
77 NATIVE_METHOD(NativePluralRules, forLocaleImpl, "(Ljava/lang/String;)J"),
78 NATIVE_METHOD(NativePluralRules, quantityForIntImpl, "(JI)I"),
79 };
register_libcore_icu_NativePluralRules(JNIEnv * env)80 void register_libcore_icu_NativePluralRules(JNIEnv* env) {
81 jniRegisterNativeMethods(env, "libcore/icu/NativePluralRules", gMethods, NELEM(gMethods));
82 }
83