/// <returns>short PropertyID used to store the property</returns>
public PropertyID AddToMap(PropertyLongID propertyLongID, Guid propertySetGuid)
{
PSTNode node = m_file.GetNode((uint)InternalNodeName.NID_NAME_TO_ID_MAP);
int wGuid = GetPropertySetGuidIndexHint(propertySetGuid);
if (wGuid == -1)
{
wGuid = 3 + AddPropertySetGuid(node, propertySetGuid);
}
byte[] oldBuffer = node.PC.GetBytesProperty(PropertyID.PidTagNameidStreamEntry);
int propertyIndex = oldBuffer.Length / 8;
NameID nameID = new NameID(propertyLongID, (ushort)wGuid, (ushort)propertyIndex);
byte[] newBuffer = new byte[oldBuffer.Length + 8];
Array.Copy(oldBuffer, newBuffer, oldBuffer.Length);
nameID.WriteBytes(newBuffer, oldBuffer.Length);
node.PC.SetBytesProperty(PropertyID.PidTagNameidStreamEntry, newBuffer);
AddPropertyToHashBucket(node, nameID);
node.SaveChanges();
PropertyID propertyID = (PropertyID)(nameID.PropertyShortID);
m_map.Add(new PropertyName(propertyLongID, propertySetGuid), (ushort)propertyID);
return(propertyID);
}
// Note: Changes must be saved by the caller method
private void AddPropertyToHashBucket(Node node, NameID nameID)
{
int bucketCount = node.PC.GetInt32Property(PropertyID.PidTagNameidBucketCount).Value;
uint firstBucketPropertyID = (uint)PropertyID.PidTagNameidBucketBase;
uint arg0 = nameID.dwPropertyID;
uint arg1 = Convert.ToUInt32(nameID.IdentifierType) + nameID.wGuid << 1;
ushort bucketIndex = (ushort)((arg0 ^ arg1) % bucketCount);
if (nameID.IsStringIdentifier)
{
throw new NotImplementedException("Named property with string identifier is not supported");
}
PropertyID bucketPropertyID = (PropertyID)(firstBucketPropertyID + bucketIndex);
byte[] oldBuffer = node.PC.GetBytesProperty(bucketPropertyID);
if (oldBuffer == null)
{
oldBuffer = new byte[0];
}
byte[] newBuffer = new byte[oldBuffer.Length + NameID.Length];
Array.Copy(oldBuffer, newBuffer, oldBuffer.Length);
nameID.WriteBytes(newBuffer, oldBuffer.Length);
node.PC.SetBytesProperty(bucketPropertyID, newBuffer);
}
