object IHandler.Read(Stream input, Endian endian, PropertySetSchemaProvider schemaProvider)
{
var resource = new DataFormats.PropertySet();
resource.Deserialize(input, endian);
return(PropertySet.Read(input, resource, endian, schemaProvider));
}
public void Write(
Stream data,
Endian endian,
DataFormats.PropertySet resource,
long ownerOffset,
PropertySetSchemaProvider schemaProvider)
{
Write(data, this, endian, resource, ownerOffset, schemaProvider);
}
public void Write(Stream output, object value, Endian endian, long ownerOffset, PropertySetSchemaProvider schemaProvider)
{
var startPosition = output.Position;
var resource = new DataFormats.PropertySet();
output.Position += resource.Size;
((PropertySet)value).Write(output, endian, resource, startPosition, schemaProvider);
var endPosition = output.Position;
output.Position = startPosition;
resource.OwnerOffset = ownerOffset;
resource.Serialize(output, endian);
output.Position = endPosition;
}
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);
}
public static void Write(
Stream output,
PropertySet instance,
Endian endian,
DataFormats.PropertySet resource,
long ownerOffset,
PropertySetSchemaProvider schemaProvider)
{
resource.Flags = instance._Flags;
resource.Name = instance._Name;
resource.ReferenceCount = instance._ReferenceCount;
resource.ParentCount = (ushort)instance._Parents.Count;
resource.ParentMask = 0xFFFFFFFFu;
resource.SchemaName = instance._SchemaName;
resource.PropertyMask = 0xFFFFFFFFu;
if (resource.ParentCount == 0)
{
resource.ParentsOffset = 0;
}
else
{
resource.ParentsOffset = output.Position;
foreach (var parentHandle in instance._Parents)
{
parentHandle.Write(output, endian);
}
}
bool writeSchema;
PropertySetSchema schema;
if (resource.SchemaName == Symbol.Invalid || resource.SchemaName == resource.Name)
{
if ((resource.Flags & PropertyCollectionFlags.InheritSchema) != 0)
{
throw new InvalidOperationException();
}
/*
* var properties = new List<PropertySchema>();
* uint runningOffset = 0;
* foreach (var kv in instance.Properties)
* {
* var propertyValue = kv.Value;
* if (propertyValue == null)
* {
* throw new InvalidOperationException();
* }
* var handler = HandlerFactory.Get(propertyValue.GetType());
*
* runningOffset = runningOffset.Align((uint)handler.Alignment);
*
* var propertyId = kv.Key;
* var propertyType = handler.Id;
* var propertyOffset = runningOffset;
*
* properties.Add(new PropertySchema(propertyId, propertyType, propertyOffset));
*
* if (handler.UsesPointer == false)
* {
* runningOffset += (uint)handler.ByteSize;
* }
* else
* {
* runningOffset += 8;
* }
* }
*
* if (runningOffset > ushort.MaxValue)
* {
* throw new InvalidOperationException();
* }
*/
schema = instance._DefinedSchema;
writeSchema = true;
if (resource.Name != Symbol.Invalid && resource.SchemaName == resource.Name)
{
schemaProvider.Add(resource.Name.Id, schema);
}
resource.PropertyCount = (ushort)instance._Properties.Count;
resource.DataSize = schema.DataSize;
}
else
{
if (resource.PropertyCount != 0)
{
throw new NotSupportedException();
}
schema = schemaProvider.Get(resource.SchemaName.Id);
writeSchema = false;
resource.PropertyCount = 0;
resource.DataSize = 0;
}
if (schema.Count == 0)
{
resource.PropertiesOffset = 0;
resource.DefaultBitsOffset = 0;
resource.DataOffset = 0;
}
else
{
if (writeSchema == true)
{
resource.PropertiesOffset = output.Position;
resource.DefaultBitsOffset = resource.PropertiesOffset + (8 * schema.Count);
}
else
{
resource.PropertiesOffset = 0;
resource.DefaultBitsOffset = output.Position;
}
resource.DataOffset = resource.DefaultBitsOffset + (((schema.Count + 31) >> 5) * 4);
var defaultBits = new uint[(schema.Count + 31) >> 5];
output.Position = (resource.DataOffset + schema.DataSize).Align(16);
using (var data = new MemoryStream(schema.DataSize))
{
for (int i = 0; i < schema.Count; i++)
{
var property = schema[i];
if (instance.Properties.ContainsKey(property.Id) == false)
{
throw new InvalidOperationException();
}
var value = instance.Properties[property.Id];
var handler = HandlerFactory.Get(property.Type);
if (instance.DefaultProperties.Contains(property.Id) == true)
{
defaultBits[i >> 5] |= 1u << (i % 32);
}
data.Position = property.Offset;
if (handler.UsesPointer == false)
{
handler.Write(data, value, endian, ownerOffset, schemaProvider);
}
else
{
output.Position = output.Position.Align(handler.Alignment);
var pointerOffset = output.Position - resource.DataOffset;
handler.Write(output, value, endian, ownerOffset, schemaProvider);
data.WriteOffset(pointerOffset, endian);
}
}
data.Flush();
if (data.Length != schema.DataSize)
{
throw new InvalidOperationException();
}
var endPosition = output.Position;
if (writeSchema == true)
{
output.Position = resource.PropertiesOffset;
for (int i = 0; i < schema.Count; i++)
{
var property = schema[i];
property.Write(output, endian);
}
}
output.Position = resource.DefaultBitsOffset;
foreach (var defaultBit in defaultBits)
{
output.WriteValueU32(defaultBit, endian);
}
output.Position = resource.DataOffset;
data.Position = 0;
output.WriteFromStream(data, schema.DataSize);
output.Position = endPosition;
}
}
}
