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nearby/internal/platform/implementation/windows/file.h
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2023-01-06 02:53:57 -08:00

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// Copyright 2020 Google LLC
//
// 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
//
// https://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 PLATFORM_IMPL_WINDOWS_FILE_H_
#define PLATFORM_IMPL_WINDOWS_FILE_H_
#include <cstdint>
#include <fstream>
#include <memory>
#include <string>
#include "absl/strings/string_view.h"
#include "internal/platform/exception.h"
#include "internal/platform/implementation/input_file.h"
#include "internal/platform/implementation/output_file.h"
namespace nearby {
namespace windows {
class IOFile final : public api::InputFile, public api::OutputFile {
public:
static std::unique_ptr<IOFile> CreateInputFile(
const absl::string_view file_path, size_t size);
static std::unique_ptr<IOFile> CreateOutputFile(const absl::string_view path);
ExceptionOr<ByteArray> Read(std::int64_t size) override;
std::string GetFilePath() const override { return path_; }
std::int64_t GetTotalSize() const override { return total_size_; }
Exception Close() override;
Exception Write(const ByteArray& data) override;
Exception Flush() override;
private:
explicit IOFile(const absl::string_view file_path, size_t size);
explicit IOFile(const absl::string_view file_path);
std::fstream file_;
std::string path_;
std::int64_t total_size_;
};
} // namespace windows
} // namespace nearby
#endif // PLATFORM_IMPL_WINDOWS_FILE_H_