System.Globalization.CultureTable.GetDataItemFromCultureName C# (CSharp) Method

        unsafe internal int GetDataItemFromCultureName(String name, out int culture, out String actualName) {
            BCLDebug.Assert(name!=null,"CultureTable.GetDataItemFromCultureName(): name!=null");
            culture = -1;
            actualName = "";

            CultureTableItem cti  = (CultureTableItem)hashByName[name];
            if(null != cti &&
               0 != cti.culture) {
                culture = cti.culture;
                actualName = cti.name;
                return (cti.dataItem);
            }

            int left = 0;
            int right = m_pCultureHeader->numCultureNames - 1;

            while (left <= right) {
                int mid = (left+right)/2;

                int result = CompareStringToStringPoolStringBinary(name, m_pCultureNameIndex[mid].strOffset);

                if (result == 0) {
                    cti = new CultureTableItem();
                    int index = cti.dataItem = m_pCultureNameIndex[mid].dataItemIndex;
                    culture = cti.culture = m_pCultureNameIndex[mid].actualCultureID;
                    actualName = cti.name = GetStringPoolString(m_pCultureNameIndex[mid].strOffset);

                    // m_pCultureNameIndex[i].dateItemIndex is the record number for
                    // the information of a culture.
                    // The trick that we play to remove es-ES-Ts is to put a duplicate entry
                    // in the name offset table for es-ES, so that es-ES-Ts is not in the name offset table
                    // Therefore, es-ES-Ts becomes an invalid name.
                    // However, the data item for es-ES-Ts is still there.  It is just that
                    // you can not find it by calling GetDataItemFromName.
                    hashByName[name] = cti;
                    return (index);
                }
                if (result < 0) {
                    right = mid - 1;
                } else {
                    left = mid + 1;
                }
            }

            culture = -1;
            return (-1);
        }