public static DwgObjectCache Parse(BitReader reader, DwgVersionId version)
{
var objectCache = new DwgObjectCache(version);
var lastHandle = 0;
var lastLocation = 0;
reader.StartCrcCheck();
var sectionSize = reader.ReadShortBigEndian();
while (sectionSize != 2)
{
var sectionStart = reader.Offset;
var sectionEnd = sectionStart + sectionSize - 2;
while (reader.Offset < sectionEnd)
{
// read data
var handleOffset = reader.Read_MC(allowNegation: false);
var locationOffset = reader.Read_MC();
var handle = lastHandle + handleOffset;
var location = lastLocation + locationOffset;
objectCache._handleToOffset.Add(handle, location);
lastHandle = handle;
lastLocation = location;
}
reader.ValidateCrc(initialValue: DwgHeaderVariables.InitialCrcValue, readCrcAsMsb: true);
reader.StartCrcCheck();
sectionSize = reader.ReadShortBigEndian();
}
reader.ValidateCrc(initialValue: DwgHeaderVariables.InitialCrcValue, readCrcAsMsb: true);
return(objectCache);
}
