libcommon/tempfile.cpp


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#include "tempfile.h"

#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include <iostream>

namespace fs = std::filesystem;
using namespace std::string_literals;

fs::path Tempfile::GetPath() const
{
 return m_path;
}

Tempfile::Tempfile(const std::filesystem::path& extension)
{
 try {
  fs::path path { fs::temp_directory_path() / "tempfileXXXXXX"};
  if (!extension.empty())
   path += extension;

  fs::path::string_type name{path.native()};
  int fd = mkstemps(name.data(), extension.native().size());
  if (fd == -1)
   std::runtime_error("mkstemps: "s + strerror(errno));
  close(fd);
  m_path = std::string{name};
 } catch (const std::exception& ex) {
  throw std::runtime_error("Tempfile error: "s + ex.what());
 }
}

Tempfile::~Tempfile()
{
 try {
  fs::remove_all(m_path);
 } catch (const std::exception& ex) {
  std::cerr << "Warning: Couldn't remove temporary file " << m_path << std::endl;
 }
}