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 "jni.h"
18#include "ScopedLocalRef.h"
19
20#include <string>
21#include <vector>
22
23template <typename Counter, typename Getter>
24jobjectArray toStringArray(JNIEnv* env, Counter* counter, Getter* getter) {
25    size_t count = (*counter)();
26    jobjectArray result = env->NewObjectArray(count, JniConstants::stringClass, NULL);
27    if (result == NULL) {
28        return NULL;
29    }
30    for (size_t i = 0; i < count; ++i) {
31        ScopedLocalRef<jstring> s(env, env->NewStringUTF((*getter)(i)));
32        if (env->ExceptionCheck()) {
33            return NULL;
34        }
35        env->SetObjectArrayElement(result, i, s.get());
36        if (env->ExceptionCheck()) {
37            return NULL;
38        }
39    }
40    return result;
41}
42
43template <typename Counter, typename Getter>
44jobjectArray toStringArray16(JNIEnv* env, Counter* counter, Getter* getter) {
45    size_t count = (*counter)();
46    jobjectArray result = env->NewObjectArray(count, JniConstants::stringClass, NULL);
47    if (result == NULL) {
48        return NULL;
49    }
50    for (size_t i = 0; i < count; ++i) {
51        int32_t charCount;
52        const jchar* chars = (*getter)(&charCount);
53        ScopedLocalRef<jstring> s(env, env->NewString(chars, charCount));
54        if (env->ExceptionCheck()) {
55            return NULL;
56        }
57        env->SetObjectArrayElement(result, i, s.get());
58        if (env->ExceptionCheck()) {
59            return NULL;
60        }
61    }
62    return result;
63}
64
65jobjectArray toStringArray(JNIEnv* env, const std::vector<std::string>& strings);
66jobjectArray toStringArray(JNIEnv* env, const char* const* strings);
67