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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.
*/
#include "dictionary/utils/dict_file_writing_utils.h"
#include <cstdio>
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "dictionary/header/header_policy.h"
#include "dictionary/structure/backward/v402/ver4_dict_buffers.h"
#include "dictionary/structure/pt_common/dynamic_pt_writing_utils.h"
#include "dictionary/structure/v4/ver4_dict_buffers.h"
#include "dictionary/utils/buffer_with_extendable_buffer.h"
#include "dictionary/utils/entry_counters.h"
#include "dictionary/utils/file_utils.h"
#include "dictionary/utils/format_utils.h"
#include "utils/time_keeper.h"
namespace latinime {
const char *const DictFileWritingUtils::TEMP_FILE_SUFFIX_FOR_WRITING_DICT_FILE = ".tmp";
// Enough size to describe buffer size.
const int DictFileWritingUtils::SIZE_OF_BUFFER_SIZE_FIELD = 4;
/* static */ bool DictFileWritingUtils::createEmptyDictFile(const char *const filePath,
const int dictVersion, const std::vector<int> localeAsCodePointVector,
const DictionaryHeaderStructurePolicy::AttributeMap *const attributeMap) {
TimeKeeper::setCurrentTime();
const FormatUtils::FORMAT_VERSION formatVersion = FormatUtils::getFormatVersion(dictVersion);
switch (formatVersion) {
case FormatUtils::VERSION_402:
return createEmptyV4DictFile<backward::v402::Ver4DictConstants,
backward::v402::Ver4DictBuffers,
backward::v402::Ver4DictBuffers::Ver4DictBuffersPtr>(
filePath, localeAsCodePointVector, attributeMap, formatVersion);
case FormatUtils::VERSION_4_ONLY_FOR_TESTING:
case FormatUtils::VERSION_403:
return createEmptyV4DictFile<Ver4DictConstants, Ver4DictBuffers,
Ver4DictBuffers::Ver4DictBuffersPtr>(
filePath, localeAsCodePointVector, attributeMap, formatVersion);
default:
AKLOGE("Cannot create dictionary %s because format version %d is not supported.",
filePath, dictVersion);
return false;
}
}
template<class DictConstants, class DictBuffers, class DictBuffersPtr>
/* static */ bool DictFileWritingUtils::createEmptyV4DictFile(const char *const dirPath,
const std::vector<int> localeAsCodePointVector,
const DictionaryHeaderStructurePolicy::AttributeMap *const attributeMap,
const FormatUtils::FORMAT_VERSION formatVersion) {
HeaderPolicy headerPolicy(formatVersion, localeAsCodePointVector, attributeMap);
DictBuffersPtr dictBuffers = DictBuffers::createVer4DictBuffers(&headerPolicy,
DictConstants::MAX_DICT_EXTENDED_REGION_SIZE);
headerPolicy.fillInAndWriteHeaderToBuffer(true /* updatesLastDecayedTime */,
EntryCounts(), 0 /* extendedRegionSize */, dictBuffers->getWritableHeaderBuffer());
if (!DynamicPtWritingUtils::writeEmptyDictionary(
dictBuffers->getWritableTrieBuffer(), 0 /* rootPos */)) {
AKLOGE("Empty ver4 dictionary structure cannot be created on memory.");
return false;
}
return dictBuffers->flush(dirPath);
}
/* static */ bool DictFileWritingUtils::flushBufferToFileWithSuffix(const char *const basePath,
const char *const suffix, const BufferWithExtendableBuffer *const buffer) {
const int filePathBufSize = FileUtils::getFilePathWithSuffixBufSize(basePath, suffix);
char filePath[filePathBufSize];
FileUtils::getFilePathWithSuffix(basePath, suffix, filePathBufSize, filePath);
return flushBufferToFile(filePath, buffer);
}
/* static */ bool DictFileWritingUtils::writeBufferToFileTail(FILE *const file,
const BufferWithExtendableBuffer *const buffer) {
uint8_t bufferSize[SIZE_OF_BUFFER_SIZE_FIELD];
int writingPos = 0;
ByteArrayUtils::writeUintAndAdvancePosition(bufferSize, buffer->getTailPosition(),
SIZE_OF_BUFFER_SIZE_FIELD, &writingPos);
if (fwrite(bufferSize, SIZE_OF_BUFFER_SIZE_FIELD, 1 /* count */, file) < 1) {
return false;
}
return writeBufferToFile(file, buffer);
}
/* static */ bool DictFileWritingUtils::flushBufferToFile(const char *const filePath,
const BufferWithExtendableBuffer *const buffer) {
const int fd = open(filePath, O_WRONLY | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR);
if (fd == -1) {
AKLOGE("File %s cannot be opened. errno: %d", filePath, errno);
ASSERT(false);
return false;
}
FILE *const file = fdopen(fd, "wb");
if (!file) {
AKLOGE("fdopen failed for the file %s. errno: %d", filePath, errno);
ASSERT(false);
return false;
}
if (!writeBufferToFile(file, buffer)) {
fclose(file);
remove(filePath);
AKLOGE("Buffer cannot be written to the file %s. size: %d", filePath,
buffer->getTailPosition());
ASSERT(false);
return false;
}
fclose(file);
return true;
}
// Returns whether the writing was succeeded or not.
/* static */ bool DictFileWritingUtils::writeBufferToFile(FILE *const file,
const BufferWithExtendableBuffer *const buffer) {
const int originalBufSize = buffer->getOriginalBufferSize();
if (originalBufSize > 0 && fwrite(buffer->getBuffer(false /* usesAdditionalBuffer */),
originalBufSize, 1, file) < 1) {
return false;
}
const int additionalBufSize = buffer->getUsedAdditionalBufferSize();
if (additionalBufSize > 0 && fwrite(buffer->getBuffer(true /* usesAdditionalBuffer */),
additionalBufSize, 1, file) < 1) {
return false;
}
return true;
}
} // namespace latinime
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