mirror of
https://github.com/kidfromjupiter/nearby.git
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65 lines
1.9 KiB
C++
65 lines
1.9 KiB
C++
// Copyright 2020 Google LLC
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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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// https://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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#ifndef PLATFORM_IMPL_SHARED_FILE_H_
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#define PLATFORM_IMPL_SHARED_FILE_H_
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#include <cstddef>
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#include <cstdint>
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#include <fstream>
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#include <memory>
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#include <string>
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#include "absl/strings/string_view.h"
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#include "absl/time/time.h"
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#include "internal/platform/exception.h"
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#include "internal/platform/implementation/input_file.h"
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#include "internal/platform/implementation/output_file.h"
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namespace nearby {
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namespace shared {
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class IOFile final : public api::InputFile, public api::OutputFile {
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public:
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static std::unique_ptr<IOFile> CreateInputFile(absl::string_view file_path);
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static std::unique_ptr<IOFile> CreateOutputFile(absl::string_view path);
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ExceptionOr<ByteArray> Read(std::int64_t size) override;
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std::string GetFilePath() const override { return path_; }
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std::int64_t GetTotalSize() const override { return total_size_; }
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Exception Close() override;
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Exception Write(const ByteArray& data) override;
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absl::Time GetLastModifiedTime() const override;
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void SetLastModifiedTime(absl::Time last_modified_time) override;
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private:
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explicit IOFile(absl::string_view file_path) : path_(file_path) {};
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void OpenForRead();
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void OpenForWrite();
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const std::string path_;
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std::fstream file_;
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std::int64_t total_size_ = 0;
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};
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} // namespace shared
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} // namespace nearby
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#endif // PLATFORM_IMPL_SHARED_FILE_H_
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