blob: 414d43ccb844916587697d078e84702338f6e3e8 [file] [log] [blame]
/*
* 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.
*/
#include "JniConstants.h"
#include "toStringArray.h"
#include <string>
#include <vector>
jobjectArray newStringArray(JNIEnv* env, size_t count) {
return env->NewObjectArray(count, JniConstants::stringClass, NULL);
}
struct VectorCounter {
const std::vector<std::string>& strings;
VectorCounter(const std::vector<std::string>& strings) : strings(strings) {}
size_t operator()() {
return strings.size();
}
};
struct VectorGetter {
const std::vector<std::string>& strings;
VectorGetter(const std::vector<std::string>& strings) : strings(strings) {}
const char* operator()(size_t i) {
return strings[i].c_str();
}
};
jobjectArray toStringArray(JNIEnv* env, const std::vector<std::string>& strings) {
VectorCounter counter(strings);
VectorGetter getter(strings);
return toStringArray<VectorCounter, VectorGetter>(env, &counter, &getter);
}
struct ArrayCounter {
const char* const* strings;
ArrayCounter(const char* const* strings) : strings(strings) {}
size_t operator()() {
size_t count = 0;
while (strings[count] != NULL) {
++count;
}
return count;
}
};
struct ArrayGetter {
const char* const* strings;
ArrayGetter(const char* const* strings) : strings(strings) {}
const char* operator()(size_t i) {
return strings[i];
}
};
jobjectArray toStringArray(JNIEnv* env, const char* const* strings) {
ArrayCounter counter(strings);
ArrayGetter getter(strings);
return toStringArray(env, &counter, &getter);
}