static_assert( __cplusplus > 2020'99 );

#pragma once

#include <Alepha/Alepha.h>

#if   defined( __FreeBSD__ )
#	include <sys/types.h>
#	include <sys/sysctl.h>
#elif defined( _GNU_SOURCE )
#endif

#include <string>

namespace Alepha::Hydrogen::System  ::detail::  programName_m
{
	inline namespace exports
	{
		inline std::string
		programName()
		{
			#if   defined( __FreeBSD__ )
			int mib[]
			{
				CTL_KERN,
				KERN_PROC,
				KERN_PROC_PATHNAME,
				-1,
			};
			char buf[ 4096 ];
			std::size_t cb = sizeof( buf );
			::sysctl( mib, 4, buf, &cb, nullptr, 0);
			return buf;
			#elif defined( _GNU_SOURCE )
			return ::program_invocation_short_name;
			#else
			#error "Not supported."
			#endif
		}
	}
}

namespace Alepha::Hydrogen::System::inline exports::inline programName_m
{
	using namespace detail::programName_m::exports;
}