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/*
* Copyright (C) 2014 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.
*/
#ifndef LATINIME_JNI_DATA_UTILS_H
#define LATINIME_JNI_DATA_UTILS_H
#include <vector>
#include "defines.h"
#include "jni.h"
#include "suggest/core/policy/dictionary_header_structure_policy.h"
#include "suggest/policyimpl/dictionary/header/header_read_write_utils.h"
namespace latinime {
class JniDataUtils {
public:
static void jintarrayToVector(JNIEnv *env, jintArray array, std::vector<int> *const outVector) {
if (!array) {
outVector->clear();
return;
}
const jsize arrayLength = env->GetArrayLength(array);
outVector->resize(arrayLength);
env->GetIntArrayRegion(array, 0 /* start */, arrayLength, outVector->data());
}
static DictionaryHeaderStructurePolicy::AttributeMap constructAttributeMap(JNIEnv *env,
jobjectArray attributeKeyStringArray, jobjectArray attributeValueStringArray) {
DictionaryHeaderStructurePolicy::AttributeMap attributeMap;
const int keyCount = env->GetArrayLength(attributeKeyStringArray);
for (int i = 0; i < keyCount; i++) {
jstring keyString = static_cast<jstring>(
env->GetObjectArrayElement(attributeKeyStringArray, i));
const jsize keyUtf8Length = env->GetStringUTFLength(keyString);
char keyChars[keyUtf8Length + 1];
env->GetStringUTFRegion(keyString, 0, env->GetStringLength(keyString), keyChars);
keyChars[keyUtf8Length] = '\0';
DictionaryHeaderStructurePolicy::AttributeMap::key_type key;
HeaderReadWriteUtils::insertCharactersIntoVector(keyChars, &key);
jstring valueString = static_cast<jstring>(
env->GetObjectArrayElement(attributeValueStringArray, i));
const jsize valueUtf8Length = env->GetStringUTFLength(valueString);
char valueChars[valueUtf8Length + 1];
env->GetStringUTFRegion(valueString, 0, env->GetStringLength(valueString), valueChars);
valueChars[valueUtf8Length] = '\0';
DictionaryHeaderStructurePolicy::AttributeMap::mapped_type value;
HeaderReadWriteUtils::insertCharactersIntoVector(valueChars, &value);
attributeMap[key] = value;
}
return attributeMap;
}
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(JniDataUtils);
};
} // namespace latinime
#endif // LATINIME_JNI_DATA_UTILS_H
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