Esempio n. 1
0
        internal static TableIndex?ReadCodedTableIndex(System.IO.Stream stream, CodedTableIndexKind indexKind, IDictionary <CodedTableIndexKind, Boolean> tRefSizes, Byte[] tmpArray, Boolean throwOnNull = true)
        {
            var idx = tRefSizes[indexKind] ? stream.ReadU32(tmpArray) : stream.ReadU16(tmpArray);

            TableIndex?retVal;

            if (CheckRowIndex(indexKind, throwOnNull, idx))
            {
                var possibleTables = GetTablesForCodedIndex(indexKind);
                var rowIdx         = (idx >> possibleTables.Item3);
                if (CheckRowIndex(indexKind, throwOnNull, rowIdx))
                {
                    retVal = new TableIndex(possibleTables.Item1[possibleTables.Item2 & idx].Value, (Int32)rowIdx - 1);
                }
                else
                {
                    retVal = null;
                }
            }
            else
            {
                retVal = null;
            }

            return(retVal);
        }
Esempio n. 2
0
 // Zero-based
 internal static TableIndex ReadSimpleTableIndex(System.IO.Stream stream, Tables targetTable, UInt32[] tableSizes, Byte[] tmpArray)
 {
     return(new TableIndex(targetTable, ((Int32)(tableSizes[(Int32)targetTable] > UInt16.MaxValue ? stream.ReadU32(tmpArray) : stream.ReadU16(tmpArray))) - 1));
 }