65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
/*
|
|
* Copyright (C) 2011 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#ifdef __cplusplus
|
|
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include "JNIHelp.h"
|
|
#include "ScopedLocalRef.h"
|
|
|
|
template <typename StringVisitor>
|
|
jobjectArray toStringArray(JNIEnv* env, size_t count, StringVisitor&& visitor) {
|
|
jclass stringClass = env->FindClass("java/lang/String");
|
|
ScopedLocalRef<jobjectArray> result(env, env->NewObjectArray(count, stringClass, NULL));
|
|
env->DeleteLocalRef(stringClass);
|
|
if (result == nullptr) {
|
|
return nullptr;
|
|
}
|
|
for (size_t i = 0; i < count; ++i) {
|
|
ScopedLocalRef<jstring> s(env, env->NewStringUTF(visitor(i)));
|
|
if (env->ExceptionCheck()) {
|
|
return nullptr;
|
|
}
|
|
env->SetObjectArrayElement(result.get(), i, s.get());
|
|
if (env->ExceptionCheck()) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
return result.release();
|
|
}
|
|
|
|
inline jobjectArray toStringArray(JNIEnv* env, const std::vector<std::string>& strings) {
|
|
return toStringArray(env, strings.size(), [&strings](size_t i) { return strings[i].c_str(); });
|
|
}
|
|
|
|
inline jobjectArray toStringArray(JNIEnv* env, const char* const* strings) {
|
|
size_t count = 0;
|
|
for (; strings[count] != nullptr; ++count) {}
|
|
return toStringArray(env, count, [&strings](size_t i) { return strings[i]; });
|
|
}
|
|
|
|
template <typename Counter, typename Getter>
|
|
jobjectArray toStringArray(JNIEnv* env, Counter* counter, Getter* getter) {
|
|
return toStringArray(env, counter(), [getter](size_t i) { return getter(i); });
|
|
}
|
|
|
|
#endif // __cplusplus
|
|
|