1 /*
2 * Copyright (C) 2011 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 #include <nativehelper/toStringArray.h>
18
19 #include "JniConstants.h"
20
21 namespace {
22
23 struct ArrayCounter {
24 const char* const* strings;
ArrayCounter__anon6b8846f60111::ArrayCounter25 explicit ArrayCounter(const char* const* strings) : strings(strings) {}
operator ()__anon6b8846f60111::ArrayCounter26 size_t operator()() {
27 size_t count = 0;
28 while (strings[count] != nullptr) {
29 ++count;
30 }
31 return count;
32 }
33 };
34
35 struct ArrayGetter {
36 const char* const* strings;
ArrayGetter__anon6b8846f60111::ArrayGetter37 explicit ArrayGetter(const char* const* strings) : strings(strings) {}
operator ()__anon6b8846f60111::ArrayGetter38 const char* operator()(size_t i) {
39 return strings[i];
40 }
41 };
42
43 } // namespace
44
newStringArray(JNIEnv * env,size_t count)45 jobjectArray newStringArray(JNIEnv* env, size_t count) {
46 return env->NewObjectArray(count, JniConstants::GetStringClass(env), nullptr);
47 }
48
toStringArray(JNIEnv * env,const char * const * strings)49 jobjectArray toStringArray(JNIEnv* env, const char* const* strings) {
50 ArrayCounter counter(strings);
51 ArrayGetter getter(strings);
52 return toStringArray(env, &counter, &getter);
53 }
54