Function INTL_string_to_key

src/jrd/intl.cpp:1160–1250

USHORT INTL_string_to_key(thread_db* tdbb,
						USHORT idxType,
						const dsc* pString,
						DSC* pByte,
						USHORT key_type)
{
/**************************************
 *
 *      I N T L _ s t r i n g _ t o _ k e y
 *
 **************************************
 *
 * Functional description
 *      Given an input string, convert it to a byte string
 *      that will collate naturally (byte order).
 *
 *      Return the length of the resulting byte string.
 *
 **************************************/

	SET_TDBB(tdbb);

	fb_assert(idxType >= idx_first_intl_string || idxType == idx_string ||
			  idxType == idx_byte_array || idxType == idx_metadata);
	fb_assert(pString != NULL);
	fb_assert(pByte != NULL);
	fb_assert(pString->dsc_address != NULL);
	fb_assert(pByte->dsc_address != NULL);
	fb_assert(pByte->dsc_dtype == dtype_text);

	UCHAR pad_char;
	USHORT ttype;

	switch (idxType)
	{
	case idx_string:
		pad_char = ' ';
		ttype = ttype_none;
		break;
	case idx_byte_array:
		pad_char = 0;
		ttype = ttype_binary;
		break;
	case idx_metadata:
		pad_char = ' ';
		ttype = ttype_metadata;
		break;
	default:
		pad_char = 0;
		ttype = INTL_INDEX_TO_TEXT(idxType);
		break;
	}

	// Make a string into the proper type of text

	MoveBuffer temp;
	UCHAR* src;
	USHORT len = MOV_make_string2(tdbb, pString, ttype, &src, temp);