Function DSC_string_length

src/common/dsc.cpp:1536–1569

int DSC_string_length(const dsc* desc)
{
/**************************************
 *
 *	D S C _ s t r i n g _ l e n g t h
 *
 **************************************
 *
 * Functional description
 *	Estimate length of string (in bytes) based on descriptor.
 *	Estimated length assumes representing string in
 *	narrow-char ASCII format.
 *
 *	Note that this strips off the short at the
 *	start of dtype_varying, and the NULL for dtype_cstring.
 *
 **************************************/

	switch (desc->dsc_dtype)
	{
	case dtype_text:
		return desc->dsc_length;
	case dtype_cstring:
		return desc->dsc_length - 1;
	case dtype_varying:
		return desc->dsc_length - sizeof(USHORT);
	default:
 		if (!DTYPE_IS_EXACT(desc->dsc_dtype) || desc->dsc_scale == 0)
 			return (int) _DSC_convert_to_text_length[desc->dsc_dtype];
 		if (desc->dsc_scale < 0)
			return (int) _DSC_convert_to_text_length[desc->dsc_dtype] + 1;
		return (int) _DSC_convert_to_text_length[desc->dsc_dtype] + desc->dsc_scale;
	}
}


const TEXT *DSC_dtype_tostring(UCHAR dtype)