mirror of
https://github.com/kidfromjupiter/nearby.git
synced 2026-09-15 07:06:11 -04:00
83 lines
2.3 KiB
C++
83 lines
2.3 KiB
C++
// Copyright 2023 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.
|
|
|
|
#include <sys/socket.h>
|
|
#include <unistd.h>
|
|
#include <array>
|
|
#include <cerrno>
|
|
#include <cstdint>
|
|
|
|
#include "internal/platform/byte_array.h"
|
|
#include "internal/platform/exception.h"
|
|
#include "internal/platform/implementation/linux/stream.h"
|
|
#include "internal/platform/logging.h"
|
|
|
|
namespace nearby {
|
|
namespace linux {
|
|
|
|
ExceptionOr<ByteArray> InputStream::Read(std::int64_t size) {
|
|
if (!fd_.isValid()) return {Exception::kIo};
|
|
|
|
std::string buffer;
|
|
buffer.resize(size);
|
|
ssize_t ret = recv(fd_.get(), buffer.data(), buffer.size(), MSG_WAITALL);
|
|
if (ret == 0) {
|
|
return ExceptionOr(ByteArray());
|
|
}
|
|
if (ret < 0) {
|
|
LOG(ERROR) << __func__
|
|
<< ": error reading from fd: " << std::strerror(errno);
|
|
return {Exception::kIo};
|
|
}
|
|
buffer.resize(ret);
|
|
|
|
return ExceptionOr(ByteArray(std::move(buffer)));
|
|
}
|
|
|
|
Exception InputStream::Close() {
|
|
if (!fd_.isValid()) return Exception{Exception::kIo};
|
|
fd_.reset();
|
|
return {};
|
|
}
|
|
|
|
Exception OutputStream::Write(const ByteArray &data) {
|
|
if (!fd_.isValid()) return Exception{Exception::kIo};
|
|
|
|
size_t written = 0;
|
|
while (written < data.size()) {
|
|
ssize_t ret = write(fd_.get(), data.data(), data.size());
|
|
if (ret < 0) {
|
|
LOG(ERROR) << __func__
|
|
<< ": error writing to fd: " << std::strerror(errno);
|
|
return Exception{Exception::kIo};
|
|
}
|
|
written += ret;
|
|
}
|
|
return Exception{Exception::kSuccess};
|
|
}
|
|
|
|
Exception OutputStream::Flush() { return Exception{Exception::kSuccess}; }
|
|
|
|
Exception OutputStream::Close() {
|
|
if (!fd_.isValid()) return Exception{Exception::kIo};
|
|
|
|
auto ret = close(fd_.get()) < 0 ? Exception{Exception::kIo}
|
|
: Exception{Exception::kSuccess};
|
|
fd_.reset();
|
|
return ret;
|
|
}
|
|
|
|
} // namespace linux
|
|
} // namespace nearby
|