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// Copyright 2021 The Pigweed Authors
//
// 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.
#pragma once
#include <fstream>
#include "pw_stream/stream.h"
namespace pw::stream {
// Wraps an std::ifstream with the Reader interface.
class StdFileReader final : public stream::SeekableReader {
public:
StdFileReader(const char* path) : stream_(path, std::ios::binary) {}
void Close() { stream_.close(); }
private:
StatusWithSize DoRead(ByteSpan dest) override;
Status DoSeek(ptrdiff_t offset, Whence origin) override;
size_t DoTell() override;
size_t ConservativeLimit(LimitType limit) const override;
std::ifstream stream_;
};
// Wraps an std::ofstream with the Writer interface.
class StdFileWriter final : public stream::SeekableWriter {
public:
StdFileWriter(const char* path)
: stream_(path, std::ios::binary | std::ios::trunc) {}
void Close() { stream_.close(); }
private:
Status DoWrite(ConstByteSpan data) override;
Status DoSeek(ptrdiff_t offset, Whence origin) override;
size_t DoTell() override;
std::ofstream stream_;
};
} // namespace pw::stream