Query range, parse numeric from/to values

    boolean isCorrectNumRange(str _rangeValue)
    {
        boolean ret = false;
        if (match("^[0-9. -=<>]+$", _rangeValue))
        {
            ret = true;
        }
        return ret;
    }

    container getRangeValue(str _rangeValue)
    {
        container   tmp;
        int         len, rangeLen = strLen(_rangeValue);
        InventQty   qtyFrom = 0, qtyTo = 0, qtyTmp;
        boolean     fromSet = false, toSet = false;
        str         val;
        _rangeValue = strLRTrim(_rangeValue);
        if (1 == strFind(_rangeValue, '>', 1, 1))
        {
            if (2 == strFind(_rangeValue, '=', 2, 1))
            {
                tmp = [subStr(_rangeValue, 3, rangeLen - 1), ''];
            }
            else
            {
                tmp = [int2str(str2int(subStr(_rangeValue, 2, rangeLen - 1))+1), ''];
            }
        }
        else if (1 == strFind(_rangeValue, '<', 1, 1))
        {
            if (2 == strFind(_rangeValue, '=', 2, 1))
            {
                tmp = ['', subStr(_rangeValue, 3, rangeLen - 1)];
            }
            else
            {
                tmp = ['', int2str(str2int(subStr(_rangeValue, 2, rangeLen - 1))-1)];
            }
            
        }
        else
        {
            tmp = str2con(_rangeValue, '..');
        }
        len     = conLen(tmp);
        val     = strLRTrim(conPeek(tmp, 1));
        if (val)
        {
            fromSet = true;
        }
        qtyFrom = str2int(val);
        if (len > 1)
        {
            val     = strLRTrim(conPeek(tmp, 2));
            if (val)
            {
                toSet = true;
            }
            qtyTo   = str2int(val);
        }
        else
        {
            qtyTo = qtyFrom;
            toSet = true;
        }
        if (fromSet && toSet && qtyFrom > qtyTo)
        {
            qtyTmp  = qtyFrom;
            qtyFrom = qtyTo;
            qtyTo   = qtyTmp;
        }
        return [qtyFrom, qtyTo, fromSet, toSet];
    }