2014-04-14 09:49:19 +00:00
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/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef LATINIME_JNI_DATA_UTILS_H
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#define LATINIME_JNI_DATA_UTILS_H
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#include <vector>
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#include "defines.h"
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#include "jni.h"
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2014-04-21 23:41:39 +00:00
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#include "suggest/core/policy/dictionary_header_structure_policy.h"
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#include "suggest/policyimpl/dictionary/header/header_read_write_utils.h"
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2014-05-14 11:05:10 +00:00
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#include "utils/char_utils.h"
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2014-04-14 09:49:19 +00:00
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namespace latinime {
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class JniDataUtils {
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public:
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static void jintarrayToVector(JNIEnv *env, jintArray array, std::vector<int> *const outVector) {
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if (!array) {
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outVector->clear();
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return;
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}
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const jsize arrayLength = env->GetArrayLength(array);
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outVector->resize(arrayLength);
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env->GetIntArrayRegion(array, 0 /* start */, arrayLength, outVector->data());
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}
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2014-04-21 23:41:39 +00:00
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static DictionaryHeaderStructurePolicy::AttributeMap constructAttributeMap(JNIEnv *env,
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jobjectArray attributeKeyStringArray, jobjectArray attributeValueStringArray) {
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DictionaryHeaderStructurePolicy::AttributeMap attributeMap;
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const int keyCount = env->GetArrayLength(attributeKeyStringArray);
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for (int i = 0; i < keyCount; i++) {
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jstring keyString = static_cast<jstring>(
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env->GetObjectArrayElement(attributeKeyStringArray, i));
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const jsize keyUtf8Length = env->GetStringUTFLength(keyString);
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char keyChars[keyUtf8Length + 1];
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env->GetStringUTFRegion(keyString, 0, env->GetStringLength(keyString), keyChars);
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keyChars[keyUtf8Length] = '\0';
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DictionaryHeaderStructurePolicy::AttributeMap::key_type key;
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HeaderReadWriteUtils::insertCharactersIntoVector(keyChars, &key);
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jstring valueString = static_cast<jstring>(
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env->GetObjectArrayElement(attributeValueStringArray, i));
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const jsize valueUtf8Length = env->GetStringUTFLength(valueString);
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char valueChars[valueUtf8Length + 1];
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env->GetStringUTFRegion(valueString, 0, env->GetStringLength(valueString), valueChars);
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valueChars[valueUtf8Length] = '\0';
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DictionaryHeaderStructurePolicy::AttributeMap::mapped_type value;
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HeaderReadWriteUtils::insertCharactersIntoVector(valueChars, &value);
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attributeMap[key] = value;
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}
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return attributeMap;
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}
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2014-05-14 08:42:47 +00:00
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static void outputCodePoints(JNIEnv *env, jintArray intArrayToOutputCodePoints, const int start,
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const int maxLength, const int *const codePoints, const int codePointCount,
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const bool needsNullTermination) {
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const int outputCodePointCount = std::min(maxLength, codePointCount);
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2014-05-14 11:05:10 +00:00
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int outputCodePonts[outputCodePointCount];
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for (int i = 0; i < outputCodePointCount; ++i) {
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const int codePoint = codePoints[i];
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if (!CharUtils::isInUnicodeSpace(codePoint)) {
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outputCodePonts[i] = CODE_POINT_REPLACEMENT_CHARACTER;
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} else if (codePoint >= 0x01 && codePoint <= 0x1F) {
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// Control code.
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outputCodePonts[i] = CODE_POINT_REPLACEMENT_CHARACTER;
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} else {
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outputCodePonts[i] = codePoint;
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}
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}
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env->SetIntArrayRegion(intArrayToOutputCodePoints, start, outputCodePointCount,
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outputCodePonts);
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2014-05-14 08:42:47 +00:00
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if (needsNullTermination && outputCodePointCount < maxLength) {
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env->SetIntArrayRegion(intArrayToOutputCodePoints, start + outputCodePointCount,
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2014-05-14 11:05:10 +00:00
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1 /* len */, &CODE_POINT_NULL);
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2014-05-14 08:42:47 +00:00
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}
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}
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2014-05-14 10:47:03 +00:00
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static void putIntToArray(JNIEnv *env, jintArray array, const int index, const int value) {
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env->SetIntArrayRegion(array, index, 1 /* len */, &value);
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}
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static void putFloatToArray(JNIEnv *env, jfloatArray array, const int index,
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const float value) {
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env->SetFloatArrayRegion(array, index, 1 /* len */, &value);
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}
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2014-04-14 09:49:19 +00:00
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private:
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DISALLOW_IMPLICIT_CONSTRUCTORS(JniDataUtils);
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2014-05-14 11:05:10 +00:00
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static const int CODE_POINT_REPLACEMENT_CHARACTER;
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static const int CODE_POINT_NULL;
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2014-04-14 09:49:19 +00:00
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};
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} // namespace latinime
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#endif // LATINIME_JNI_DATA_UTILS_H
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