Terminal.hpp

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#pragma once
 
#ifdef _WIN32
#include <windows.h>
#else
#include <termios.h>
#include <unistd.h>
#endif
 
#include <csignal>
#include <cstdio>
#include <cstdlib>
 
class Terminal {
public:
  Terminal() {
#ifndef _WIN32
    (void)tcgetattr(STDIN_FILENO, &m_original);
    s_original = m_original;
 
    struct termios raw = m_original;
    raw.c_lflag &=
        ~(static_cast<tcflag_t>(ICANON) | static_cast<tcflag_t>(ECHO));
    (void)tcsetattr(STDIN_FILENO, TCSANOW, &raw);
#endif
    (void)std::fputs("\033[?25l", stdout); // Hide cursor
    (void)std::fflush(stdout);
 
    // Hook signals so Ctrl+C / kill always restores the terminal
    (void)std::signal(SIGINT, signalHandler);
    (void)std::signal(SIGTERM, signalHandler);
  }
 
  ~Terminal() { restore(); }
 
  Terminal(const Terminal &) = delete;            
  Terminal &operator=(const Terminal &) = delete; 
  Terminal(Terminal &&) = delete;                 
  Terminal &operator=(Terminal &&) = delete;      
 
private:
  static void restore() {
#ifndef _WIN32
    (void)tcsetattr(STDIN_FILENO, TCSANOW, &s_original);
#endif
    (void)std::fputs("\033[?25h", stdout); // Show cursor
    (void)std::fflush(stdout);
  }
 
  static void signalHandler(int /*sig*/) {
    restore();
    std::_Exit(130);
  }
 
#ifndef _WIN32
  struct termios m_original{}; 
  static inline struct termios
      s_original{}; 
#endif
};