console.cpp

// #################################################################################################
//  ALib C++ Library
//
//  Copyright 2013-2024 A-Worx GmbH, Germany
//  Published under 'Boost Software License' (a free software license, see LICENSE.txt)
// #################################################################################################
#include "alib/alib_precompile.hpp"
 
#if !defined(ALIB_DOX)
#   if !defined(HPP_ALIB_LANG_CONSOLE)
       #include "alib/lang/system/console.hpp"
#   endif
 
#   if !defined(_GLIBCXX_CSTDLIB) && !defined(_CSTDLIB_)
#      include <cstdlib>
#   endif
 
#   if   defined( _WIN32 )
#   elif defined(__GLIBCXX__)  || defined(__ANDROID_NDK__)
#      include <sys/ioctl.h>
#      include <unistd.h>
#   elif defined(__APPLE__)
#      include <unistd.h>
#      include <sys/sysctl.h>
#   else
#      pragma message ("Unknown Platform in file: " __FILE__ )
#   endif
#endif // !defined(ALIB_DOX)
 
 
namespace   alib::lang::system {
 
 
// static instance representing current process
int    Console::lastReceivedWidth   = -1;
 
 
int Console::GetWidth( bool forceRedetect )
{
    if( Console::lastReceivedWidth >= 0  && !forceRedetect )
        return Console::lastReceivedWidth;
 
 
    #if defined (_WIN32)
 
    #elif defined(__GLIBC__) && defined(__unix__)  || defined(__ANDROID_NDK__)
 
        struct winsize w;
        if( ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != 0 )
            Console::lastReceivedWidth= -1;
        else
            Console::lastReceivedWidth= w.ws_col;
 
    #elif defined (__APPLE__)
 
    #else
        #pragma message ("Unknown Platform in file: " __FILE__ )
    #endif
 
    return Console::lastReceivedWidth;
}
 
} // namespace [  alib::lang::system]