blob: 2010e279c8c9731442d230bcc9a767509bd20e2e [file] [log] [blame]
// Copyright 2018 The Cobalt Authors. All Rights Reserved.
//
// 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 "starboard/common/storage.h"
#include <algorithm>
#include <vector>
#include "starboard/common/log.h"
#include "starboard/common/string.h"
#include "starboard/configuration_constants.h"
#include "starboard/file.h"
#include "starboard/shared/starboard/file_storage/storage_internal.h"
const char kTempFileSuffix[] = ".temp";
bool SbStorageWriteRecord(SbStorageRecord record,
const char* data,
int64_t data_size) {
if (!SbStorageIsValidRecord(record) || !data || data_size < 0) {
return false;
}
const char* name = record->name.c_str();
std::vector<char> original_file_path(kSbFileMaxPath);
if (!starboard::shared::starboard::GetUserStorageFilePath(
record->user, name, original_file_path.data(), kSbFileMaxPath)) {
return false;
}
std::vector<char> temp_file_path(kSbFileMaxPath + 1, 0);
starboard::strlcpy(temp_file_path.data(), original_file_path.data(),
kSbFileMaxPath);
starboard::strlcat(temp_file_path.data(), kTempFileSuffix, kSbFileMaxPath);
SbFileError error;
SbFile temp_file = SbFileOpen(
temp_file_path.data(), kSbFileCreateAlways | kSbFileWrite | kSbFileRead,
NULL, &error);
if (error != kSbFileOk) {
return false;
}
SbFileTruncate(temp_file, 0);
const char* source = data;
int64_t to_write = data_size;
while (to_write > 0) {
int to_write_max =
static_cast<int>(std::min(to_write, static_cast<int64_t>(kSbInt32Max)));
int bytes_written = SbFileWrite(temp_file, source, to_write_max);
if (bytes_written < 0) {
SbFileClose(temp_file);
SbFileDelete(temp_file_path.data());
return false;
}
source += bytes_written;
to_write -= bytes_written;
}
SbFileFlush(temp_file);
if (SbFileIsValid(record->file) && !SbFileClose(record->file)) {
SbFileClose(temp_file);
SbFileDelete(temp_file_path.data());
return false;
}
record->file = kSbFileInvalid;
if ((!SbFileDelete(original_file_path.data())) ||
(rename(temp_file_path.data(), original_file_path.data()) != 0)) {
SbFileClose(temp_file);
SbFileDelete(temp_file_path.data());
return false;
}
SbFileFlush(temp_file);
record->file = temp_file;
return true;
}