Method ValueToInteger

cpp/src/command_classes/CommandClass.cpp:657–729

----------------------------------------------------------------------------- Convert a decimal string to an integer and report the precision and number of bytes required to store the value. -----------------------------------------------------------------------------

// number of bytes required to store the value.
//-----------------------------------------------------------------------------
int32 CommandClass::ValueToInteger
(
		string const& _value,
		uint8* o_precision,
		uint8* o_size
)const
{
	int32 val;
	uint8 precision;

	// Find the decimal point
	size_t pos = _value.find_first_of( "." );
	if( pos == string::npos )
		pos = _value.find_first_of( "," );

	if( pos == string::npos )
	{
		// No decimal point
		precision = 0;

		// Convert the string to an integer
		val = atol( _value.c_str() );
	}
	else
	{
		// Remove the decimal point and convert to an integer
		precision = (uint8) ((_value.size()-pos)-1);

		string str = _value.substr( 0, pos ) + _value.substr( pos+1 );
		val = atol( str.c_str() );
	}

	uint8_t orp = m_com.GetFlagByte(COMPAT_FLAG_OVERRIDEPRECISION);
	if ( orp > 0 )
	{
		while ( precision < orp ) {
			precision++;
			val *= 10;
		}
	}

	if ( o_precision ) *o_precision = precision;

	if( o_size )
	{
		// Work out the size as either 1, 2 or 4 bytes
		*o_size = 4;
		if( val < 0 )
		{
			if( ( val & 0xffffff80 ) == 0xffffff80 )
			{
				*o_size = 1;
			}
			else if( ( val & 0xffff8000 ) == 0xffff8000 )
			{
				*o_size = 2;
			}
		}