mirror of
https://github.com/kidfromjupiter/nearby.git
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97 lines
3.6 KiB
C++
97 lines
3.6 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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#include "internal/platform/file.h"
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#include <cstddef>
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#include <cstdint>
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#include <string>
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#include "absl/time/time.h"
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namespace nearby {
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InputFile::InputFile(PayloadId id, std::int64_t size)
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: impl_(Platform::CreateInputFile(id, size)) {}
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InputFile::InputFile(std::string file_path, std::int64_t size)
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: impl_(Platform::CreateInputFile(file_path, size)) {}
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InputFile::~InputFile() = default;
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InputFile::InputFile(InputFile&& other) noexcept = default;
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InputFile& InputFile::operator=(InputFile&& other) = default;
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// Reads up to size bytes and returns as a ByteArray object wrapped by
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// ExceptionOr.
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// Returns Exception::kIo on error, or end of file.
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ExceptionOr<ByteArray> InputFile::Read(std::int64_t size) {
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return impl_->Read(size);
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}
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// Returns a string that uniqely identifies this file.
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std::string InputFile::GetFilePath() const { return impl_->GetFilePath(); }
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// Returns total size of this file in bytes.
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std::int64_t InputFile::GetTotalSize() const { return impl_->GetTotalSize(); }
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absl::Time InputFile::GetLastModifiedTime() const {
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return impl_->GetLastModifiedTime();
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}
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ExceptionOr<size_t> InputFile::Skip(size_t offset) {
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return impl_->Skip(offset);
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}
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// Disallows further reads from the file and frees system resources,
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// associated with it.
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Exception InputFile::Close() { return impl_->Close(); }
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// Returns a handle to the underlying input stream.
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//
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// Returned handle will remain valid even if InputFile is moved, for as long
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// as original InputFile lifetime continues.
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// Side effects of any non-const operation invoked for InputFile (such as
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// Read, or Close will be observable through InputStream& handle, and vice
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// versa.
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InputStream& InputFile::GetInputStream() { return *impl_; }
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OutputFile::OutputFile(std::string file_path)
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: impl_(Platform::CreateOutputFile(file_path)) {}
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OutputFile::OutputFile(PayloadId id) : impl_(Platform::CreateOutputFile(id)) {}
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OutputFile::~OutputFile() = default;
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OutputFile::OutputFile(OutputFile&&) noexcept = default;
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OutputFile& OutputFile::operator=(OutputFile&&) = default;
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bool OutputFile::IsValid() const { return impl_ != nullptr; }
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// Writes all data from ByteArray object to the underlying stream.
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// Returns Exception::kIo on error, Exception::kSuccess otherwise.
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Exception OutputFile::Write(const ByteArray& data) {
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return impl_->Write(data);
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}
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// Disallows further writes to the file and frees system resources,
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// associated with it.
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Exception OutputFile::Close() { return impl_->Close(); }
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// Returns a handle to the underlying output stream.
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//
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// Returned handle will remain valid even if OutputFile is moved, for as long
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// as original OutputFile lifetime continues.
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// Side effects of any non-const operation invoked for OutputFile (such as
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// Write, or Close will be observable through OutputStream& handle, and vice
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// versa.
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OutputStream& OutputFile::GetOutputStream() { return *impl_; }
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void OutputFile::SetLastModifiedTime(absl::Time last_modified_time) {
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impl_->SetLastModifiedTime(last_modified_time);
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}
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} // namespace nearby
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