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/*
* Copyright (C) 2013, 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_HEADER_READ_WRITE_UTILS_H
#define LATINIME_HEADER_READ_WRITE_UTILS_H
#include <cstdint>
#include "defines.h"
#include "dictionary/interface/dictionary_header_structure_policy.h"
#include "dictionary/utils/format_utils.h"
namespace latinime {
class BufferWithExtendableBuffer;
class HeaderReadWriteUtils {
public:
typedef uint16_t DictionaryFlags;
static int getHeaderSize(const uint8_t *const dictBuf);
static DictionaryFlags getFlags(const uint8_t *const dictBuf);
static AK_FORCE_INLINE int getHeaderOptionsPosition() {
return HEADER_MAGIC_NUMBER_SIZE + HEADER_DICTIONARY_VERSION_SIZE + HEADER_FLAG_SIZE
+ HEADER_SIZE_FIELD_SIZE;
}
static DictionaryFlags createAndGetDictionaryFlagsUsingAttributeMap(
const DictionaryHeaderStructurePolicy::AttributeMap *const attributeMap);
static void fetchAllHeaderAttributes(const uint8_t *const dictBuf,
DictionaryHeaderStructurePolicy::AttributeMap *const headerAttributes);
static const int *readCodePointTable(
DictionaryHeaderStructurePolicy::AttributeMap *const headerAttributes);
static bool writeDictionaryVersion(BufferWithExtendableBuffer *const buffer,
const FormatUtils::FORMAT_VERSION version, int *const writingPos);
static bool writeDictionaryFlags(BufferWithExtendableBuffer *const buffer,
const DictionaryFlags flags, int *const writingPos);
static bool writeDictionaryHeaderSize(BufferWithExtendableBuffer *const buffer,
const int size, int *const writingPos);
static bool writeHeaderAttributes(BufferWithExtendableBuffer *const buffer,
const DictionaryHeaderStructurePolicy::AttributeMap *const headerAttributes,
int *const writingPos);
/**
* Methods for header attributes.
*/
static void setCodePointVectorAttribute(
DictionaryHeaderStructurePolicy::AttributeMap *const headerAttributes,
const char *const key, const std::vector<int> &value);
static void setBoolAttribute(
DictionaryHeaderStructurePolicy::AttributeMap *const headerAttributes,
const char *const key, const bool value);
static void setIntAttribute(
DictionaryHeaderStructurePolicy::AttributeMap *const headerAttributes,
const char *const key, const int value);
static const std::vector<int> readCodePointVectorAttributeValue(
const DictionaryHeaderStructurePolicy::AttributeMap *const headerAttributes,
const char *const key);
static bool readBoolAttributeValue(
const DictionaryHeaderStructurePolicy::AttributeMap *const headerAttributes,
const char *const key, const bool defaultValue);
static int readIntAttributeValue(
const DictionaryHeaderStructurePolicy::AttributeMap *const headerAttributes,
const char *const key, const int defaultValue);
static void insertCharactersIntoVector(const char *const characters,
DictionaryHeaderStructurePolicy::AttributeMap::key_type *const key);
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(HeaderReadWriteUtils);
static const int LARGEST_INT_DIGIT_COUNT;
static const int MAX_ATTRIBUTE_KEY_LENGTH;
static const int MAX_ATTRIBUTE_VALUE_LENGTH;
static const int HEADER_MAGIC_NUMBER_SIZE;
static const int HEADER_DICTIONARY_VERSION_SIZE;
static const int HEADER_FLAG_SIZE;
static const int HEADER_SIZE_FIELD_SIZE;
static const char *const CODE_POINT_TABLE_KEY;
// Value for the "flags" field. It's unused at the moment.
static const DictionaryFlags NO_FLAGS;
static void setIntAttributeInner(
DictionaryHeaderStructurePolicy::AttributeMap *const headerAttributes,
const DictionaryHeaderStructurePolicy::AttributeMap::key_type *const key,
const int value);
static int readIntAttributeValueInner(
const DictionaryHeaderStructurePolicy::AttributeMap *const headerAttributes,
const DictionaryHeaderStructurePolicy::AttributeMap::key_type *const key,
const int defaultValue);
};
}
#endif /* LATINIME_HEADER_READ_WRITE_UTILS_H */
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