src/detail/WrappedFileHandle.cpp

0001 // This file is part of the ACTS project.
0002 //
0003 // Copyright (C) 2016 CERN for the benefit of the ACTS project
0004 //
0005 // This Source Code Form is subject to the terms of the Mozilla Public
0006 // License, v. 2.0. If a copy of the MPL was not distributed with this
0007 // file, You can obtain one at https://mozilla.org/MPL/2.0/.
0008
0009 #include "WrappedFileHandle.hpp"
0010
0011 #include <cstdio>
0012 #include <utility>
0013
0014 namespace ActsPlugins::detail {
0015
0016 /// @brief helper to wrap a file handle
0017 WrappedFileHandle::WrappedFileHandle(const std::filesystem::path& outf)
0018     : m_path(outf) {
0019   if (!outf.empty()) {
0020     m_handle = std::fopen(outf.c_str(), "w");
0021   }
0022 }
0023
0024 WrappedFileHandle::~WrappedFileHandle() {
0025   if (m_handle != nullptr) {
0026     std::fclose(m_handle);
0027   }
0028 }
0029
0030 WrappedFileHandle::WrappedFileHandle(WrappedFileHandle&& other) noexcept
0031     : m_handle(std::exchange(other.m_handle, nullptr)),
0032       m_path(std::move(other.m_path)) {}
0033
0034 WrappedFileHandle& WrappedFileHandle::operator=(
0035     WrappedFileHandle&& other) noexcept {
0036   if (this != &other) {
0037     if (m_handle != nullptr) {
0038       std::fclose(m_handle);
0039     }
0040     m_handle = std::exchange(other.m_handle, nullptr);
0041     m_path = std::move(other.m_path);
0042   }
0043
0044   return *this;
0045 }
0046 FILE* WrappedFileHandle::operator()() const {
0047   return m_handle;
0048 }
0049 bool WrappedFileHandle::isRedirected() const {
0050   return m_handle != nullptr;
0051 }
0052 const std::filesystem::path& WrappedFileHandle::path() const {
0053   return m_path;
0054 }
0055
0056 }  // namespace ActsPlugins::detail