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 #pragma once
18
19 #include <nativehelper/JNIHelp.h>
20 #include <nativehelper/ScopedUtfChars.h>
21
22 #include "unicode/uloc.h"
23
24
getLocale(const char * localeName,std::string & locale,UErrorCode * status)25 static void getLocale(const char* localeName, std::string& locale, UErrorCode* status) {
26 int length;
27 {
28 // Most common locale name should fit the max capacity.
29 char buffer[ULOC_FULLNAME_CAPACITY];
30 UErrorCode err = U_ZERO_ERROR;
31
32 length = uloc_getName(localeName, buffer, ULOC_FULLNAME_CAPACITY, &err);
33 if (U_SUCCESS(err)) {
34 locale = buffer;
35 *status = err;
36 return;
37 } else if (err != U_BUFFER_OVERFLOW_ERROR) {
38 *status = err;
39 return;
40 }
41 }
42
43 // Case U_BUFFER_OVERFLOW_ERROR
44 std::unique_ptr<char[]> buffer(new char[length+1]);
45 UErrorCode err = U_ZERO_ERROR;
46 uloc_getName(localeName, buffer.get(), length+1, &err);
47 if (U_SUCCESS(err)) {
48 locale = buffer.get();
49 }
50 *status = err;
51 return;
52 }
53
54 class ScopedIcuULoc {
55 public:
ScopedIcuULoc(JNIEnv * env,jstring javaLocaleName)56 ScopedIcuULoc(JNIEnv* env, jstring javaLocaleName) {
57 isValid = false;
58
59 if (javaLocaleName == NULL) {
60 jniThrowNullPointerException(env, "javaLocaleName == null");
61 return;
62 }
63
64 const ScopedUtfChars localeName(env, javaLocaleName);
65 if (localeName.c_str() == NULL) {
66 return;
67 }
68
69 UErrorCode status = U_ZERO_ERROR;
70 getLocale(localeName.c_str(), mLocale, &status);
71 isValid = U_SUCCESS(status);
72 }
73
~ScopedIcuULoc()74 ~ScopedIcuULoc() {
75 }
76
valid()77 bool valid() const {
78 return isValid;
79 }
80
locale()81 const char* locale() const {
82 return mLocale.c_str();
83 }
84
locale_length()85 int32_t locale_length() const {
86 return mLocale.length();
87 }
88
89 private:
90 bool isValid;
91 std::string mLocale;
92
93 // Disallow copy and assignment.
94 ScopedIcuULoc(const ScopedIcuULoc&);
95 void operator=(const ScopedIcuULoc&);
96 };
97