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