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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.
*/
#define LOG_TAG "LatinIME: jni: BinaryDictionaryUtils"
#include "com_android_inputmethod_latin_BinaryDictionaryUtils.h"
#include "defines.h"
#include "jni.h"
#include "jni_common.h"
#include "suggest/policyimpl/dictionary/utils/dict_file_writing_utils.h"
#include "utils/autocorrection_threshold_utils.h"
#include "utils/char_utils.h"
#include "utils/time_keeper.h"
namespace latinime {
static jboolean latinime_BinaryDictionaryUtils_createEmptyDictFile(JNIEnv *env, jclass clazz,
jstring filePath, jlong dictVersion, jstring locale, jobjectArray attributeKeyStringArray,
jobjectArray attributeValueStringArray) {
const jsize filePathUtf8Length = env->GetStringUTFLength(filePath);
char filePathChars[filePathUtf8Length + 1];
env->GetStringUTFRegion(filePath, 0, env->GetStringLength(filePath), filePathChars);
filePathChars[filePathUtf8Length] = '\0';
jsize localeLength = env->GetStringLength(locale);
jchar localeCodePoints[localeLength];
env->GetStringRegion(locale, 0, localeLength, localeCodePoints);
const int keyCount = env->GetArrayLength(attributeKeyStringArray);
const int valueCount = env->GetArrayLength(attributeValueStringArray);
if (keyCount != valueCount) {
return false;
}
DictionaryHeaderStructurePolicy::AttributeMap attributeMap;
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 DictFileWritingUtils::createEmptyDictFile(filePathChars, static_cast<int>(dictVersion),
CharUtils::convertShortArrayToIntVector(localeCodePoints, localeLength), &attributeMap);
}
static jfloat latinime_BinaryDictionaryUtils_calcNormalizedScore(JNIEnv *env, jclass clazz,
jintArray before, jintArray after, jint score) {
jsize beforeLength = env->GetArrayLength(before);
jsize afterLength = env->GetArrayLength(after);
int beforeCodePoints[beforeLength];
int afterCodePoints[afterLength];
env->GetIntArrayRegion(before, 0, beforeLength, beforeCodePoints);
env->GetIntArrayRegion(after, 0, afterLength, afterCodePoints);
return AutocorrectionThresholdUtils::calcNormalizedScore(beforeCodePoints, beforeLength,
afterCodePoints, afterLength, score);
}
static jint latinime_BinaryDictionaryUtils_editDistance(JNIEnv *env, jclass clazz, jintArray before,
jintArray after) {
jsize beforeLength = env->GetArrayLength(before);
jsize afterLength = env->GetArrayLength(after);
int beforeCodePoints[beforeLength];
int afterCodePoints[afterLength];
env->GetIntArrayRegion(before, 0, beforeLength, beforeCodePoints);
env->GetIntArrayRegion(after, 0, afterLength, afterCodePoints);
return AutocorrectionThresholdUtils::editDistance(beforeCodePoints, beforeLength,
afterCodePoints, afterLength);
}
static int latinime_BinaryDictionaryUtils_setCurrentTimeForTest(JNIEnv *env, jclass clazz,
jint currentTime) {
if (currentTime >= 0) {
TimeKeeper::startTestModeWithForceCurrentTime(currentTime);
} else {
TimeKeeper::stopTestMode();
}
TimeKeeper::setCurrentTime();
return TimeKeeper::peekCurrentTime();
}
static const JNINativeMethod sMethods[] = {
{
const_cast<char *>("createEmptyDictFileNative"),
const_cast<char *>(
"(Ljava/lang/String;JLjava/lang/String;[Ljava/lang/String;[Ljava/lang/String;)Z"),
reinterpret_cast<void *>(latinime_BinaryDictionaryUtils_createEmptyDictFile)
},
{
const_cast<char *>("calcNormalizedScoreNative"),
const_cast<char *>("([I[II)F"),
reinterpret_cast<void *>(latinime_BinaryDictionaryUtils_calcNormalizedScore)
},
{
const_cast<char *>("editDistanceNative"),
const_cast<char *>("([I[I)I"),
reinterpret_cast<void *>(latinime_BinaryDictionaryUtils_editDistance)
},
{
const_cast<char *>("setCurrentTimeForTestNative"),
const_cast<char *>("(I)I"),
reinterpret_cast<void *>(latinime_BinaryDictionaryUtils_setCurrentTimeForTest)
}
};
int register_BinaryDictionaryUtils(JNIEnv *env) {
const char *const kClassPathName = "com/android/inputmethod/latin/utils/BinaryDictionaryUtils";
return registerNativeMethods(env, kClassPathName, sMethods, NELEMS(sMethods));
}
} // namespace latinime
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