source: trunk/src/lua/lua_flags.cc @ 212

// Copyright (C) 2012-2013 ChaosForge / Kornel Kisielewicz
// http://chaosforge.org/
//
// This file is part of NV Libraries.
// For conditions of distribution and use, see copyright notice in nv.hh

#include "nv/lua/lua_flags.hh"

#include "nv/lua/lua_raw.hh"
#include "nv/string.hh"


void nv::lua::detail::read_flags( lua_State* L, int index, uint8* data, uint32 count )
{
        nlua_toflags( L, index, data, count );
}

void nv::lua::detail::push_flags( lua_State* L, uint8* data, uint32 count )
{
        // TODO : this can be optimized
        lua_createtable( L, 0, 0 );
        for ( uint32 c = 0; c < count; ++c )
        {
                uint32 idx = c / 8;
                uint32 pos = c % 8;
                if ( ( data[ idx ] & ( 1 << static_cast< uint8 >( pos ) ) ) != 0 )
                {
                        lua_pushboolean( L, true );
                        lua_rawseti( L, -2, c );
                }
        }
}