// clearscreen.cpp
 
#include <iostream>
#include <string>
 
#if defined(__WIN32__) || defined(__WIN32) || defined(_WIN32) || defined(WIN32) || defined(__TOS_WIN__) || defined(__WINDOWS__)
  #ifndef __WIN32__
    #define __WIN32__
  #endif
  #include <windows.h>
#else
  #include <unistd.h>
  #ifdef _POSIX_VERSION
    #ifndef __UNIX__
      #define __UNIX__
    #endif
    #include <term.h>
  #endif
#endif
 
#if !defined(__WIN32__) && !defined(__UNIX__)
  #warning Works best on a Windows or POSIX platform.
#endif
 
void clearscreen()
  {
  #if defined(__WIN32__)
 
    HANDLE                     hStdOut;
    CONSOLE_SCREEN_BUFFER_INFO csbi;
    DWORD                      count;
    DWORD                      cellCount;
    COORD                      homeCoords = { 0, 0 };
 
    hStdOut = GetStdHandle( STD_OUTPUT_HANDLE );
    if (hStdOut == INVALID_HANDLE_VALUE) return;
 
    /* Get the number of cells in the current buffer */
    if (!GetConsoleScreenBufferInfo( hStdOut, &csbi )) return;
    cellCount = csbi.dwSize.X *csbi.dwSize.Y;
 
    /* Fill the entire buffer with spaces */
    if (!FillConsoleOutputCharacter(
      hStdOut,
      (TCHAR) ' ',
      cellCount,
      homeCoords,
      &count
      )) return;
 
    /* Fill the entire buffer with the current colors and attributes */
    if (!FillConsoleOutputAttribute(
      hStdOut,
      csbi.wAttributes,
      cellCount,
      homeCoords,
      &count
      )) return;
 
    /* Move the cursor home */
    SetConsoleCursorPosition( hStdOut, homeCoords );
 
  #elif defined(__UNIX__)
 
    static char* console_clearscreen = 0;
    if (!console_clearscreen)
      {
      int result;
      setupterm( NULL, STDOUT_FILENO, &result );
      if (result > 0)
        console_clearscreen = tigetstr( "clear" );
      }
    if (console_clearscreen)
      putp( console_clearscreen );
 
  #else
    std::cout << std::string( 100, '\n' );
  #endif
  }
 
// end clearscreen.cpp

// clearscreen.hpp
 
#ifndef CLEARSCREEN_HPP
#define CLEARSCREEN_HPP
 
void clearscreen();
 
#endif
 
// end clearscreen.hpp