public static void Write(Stream output, PropertySchema instance, Endian endian)
{
var typeAndOffset = instance.Offset & 0x00FFFFFFu | (uint)instance.Type << 24;
output.WriteValueU32(typeAndOffset, endian);
output.WriteValueU32(instance.Id, endian);
}
public static PropertySet Read(
Stream input,
DataFormats.PropertySet resource,
Endian endian,
PropertySetSchemaProvider schemaProvider)
{
var instance = new PropertySet();
instance._Name = resource.Name;
instance._ReferenceCount = resource.ReferenceCount;
instance._SchemaName = resource.SchemaName;
instance._Flags = resource.Flags;
var parentHandles = new ResourceHandle[resource.ParentCount];
if (resource.ParentCount > 0)
{
input.Position = resource.ParentsOffset;
for (uint i = 0; i < resource.ParentCount; i++)
{
parentHandles[i] = ResourceHandle.Read(input, endian);
}
}
instance._Parents.Clear();
instance._Parents.AddRange(parentHandles);
PropertySetSchema schema;
if (resource.SchemaName == Symbol.Invalid || resource.SchemaName == resource.Name)
{
if ((resource.Flags & PropertyCollectionFlags.InheritSchema) != 0)
{
throw new InvalidOperationException();
}
var properties = new PropertySchema[resource.PropertyCount];
if (resource.PropertyCount > 0)
{
input.Position = resource.PropertiesOffset;
for (uint i = 0; i < resource.PropertyCount; i++)
{
properties[i] = PropertySchema.Read(input, endian);
}
}
schema = new PropertySetSchema(properties, resource.DataSize);
if (resource.Name != Symbol.Invalid && resource.SchemaName == resource.Name)
{
schemaProvider.Add(resource.Name.Id, schema);
}
instance._DefinedSchema = schema;
}
else
{
if (resource.PropertyCount != 0)
{
throw new NotSupportedException();
}
schema = schemaProvider.Get(resource.SchemaName.Id);
}
instance._Properties.Clear();
instance._DefaultProperties.Clear();
if (schema.Count > 0)
{
if (resource.DataOffset == 0)
{
throw new InvalidOperationException();
}
input.Position = resource.DefaultBitsOffset;
var defaultBits = new uint[(schema.Count + 31) >> 5];
for (int i = 0; i < defaultBits.Length; i++)
{
defaultBits[i] = input.ReadValueU32(endian);
}
input.Position = resource.DataOffset;
using (var data = input.ReadToMemoryStream(schema.DataSize))
{
for (int i = 0; i < schema.Count; i++)
{
var property = schema[i];
var isDefault = (defaultBits[i >> 5] & (1u << (i % 32))) != 0;
var handler = HandlerFactory.Get(property.Type);
data.Position = property.Offset;
object value;
if (handler.UsesPointer == false)
{
value = handler.Read(data, endian, schemaProvider);
}
else
{
var pointerOffset = data.ReadOffset(endian);
if (pointerOffset == 0)
{
throw new InvalidOperationException();
}
input.Position = resource.DataOffset + pointerOffset;
value = handler.Read(input, endian, schemaProvider);
}
instance._Properties.Add(property.Id, value);
if (isDefault == true)
{
instance._DefaultProperties.Add(property.Id);
}
}
}
}
return(instance);
}