public override UnprocessedChunk Unprocess(int chunkid)
{
byte[] data = new byte [Length];
BitConv.ToInt16(data, 0, Magic);
BitConv.ToInt16(data, 2, Type);
BitConv.ToInt32(data, 4, chunkid);
BitConv.ToInt32(data, 8, entries.Count);
// Checksum is here, but calculated later
int offset = 20 + entries.Count * 4;
for (int i = 0; i < entries.Count; i++)
{
UnprocessedEntry entry = entries[i].Unprocess();
byte[] entrydata = entry.Save();
offset += entry.HeaderLength;
Aligner.Align(ref offset, Alignment);
offset -= entry.HeaderLength;
if (offset + entrydata.Length > Length)
{
throw new PackingException();
}
BitConv.ToInt32(data, 16 + i * 4, offset);
entrydata.CopyTo(data, offset);
offset += entrydata.Length;
}
BitConv.ToInt32(data, 16 + entries.Count * 4, offset);
int checksum = CalculateChecksum(data);
BitConv.ToInt32(data, 12, checksum);
return(new UnprocessedChunk(data));
}
public override byte[] Save()
{
int length = 20 + Items.Count * 4;
Aligner.Align(ref length, 4);
foreach (byte[] item in Items)
{
length += item.Length;
Aligner.Align(ref length, 4);
}
byte[] data = new byte [length];
BitConv.ToInt32(data, 0, Magic);
BitConv.ToInt32(data, 4, EID);
BitConv.ToInt32(data, 8, Type);
BitConv.ToInt32(data, 12, Items.Count);
int offset = 20 + Items.Count * 4;
Aligner.Align(ref offset, 4);
BitConv.ToInt32(data, 16, offset);
for (int i = 0; i < Items.Count; i++)
{
Items[i].CopyTo(data, offset);
offset += Items[i].Length;
Aligner.Align(ref offset, 4);
BitConv.ToInt32(data, 20 + i * 4, offset);
}
return(data);
}
public override byte[] Save()
{
if (rows.Count == 0)
{
return(new byte [0]);
}
int length;
if (IsSparse)
{
length = rows.Count * 2;
}
else
{
length = 2;
}
if (HasMetaValues)
{
length += rows.Count * 2;
}
Aligner.Align(ref length, 4);
foreach (EntityPropertyRow <T> row in rows)
{
length += row.Values.Count * ElementSize;
}
Aligner.Align(ref length, 4);
byte[] data = new byte [length];
int offset = 0;
if (IsSparse)
{
foreach (EntityPropertyRow <T> row in rows)
{
BitConv.ToInt16(data, offset, (short)row.Values.Count);
offset += 2;
}
}
else
{
BitConv.ToInt16(data, offset, (short)rows[0].Values.Count);
offset += 2;
}
if (HasMetaValues)
{
foreach (EntityPropertyRow <T> row in rows)
{
if (!row.MetaValue.HasValue)
{
throw new InvalidOperationException("EntityPropertyRow MetaValues must be consistently present or non-present.");
}
BitConv.ToInt16(data, offset, row.MetaValue.Value);
offset += 2;
}
}
Aligner.Align(ref offset, 4);
byte[] elementdata = new byte [ElementSize];
foreach (EntityPropertyRow <T> row in rows)
{
foreach (T value in row.Values)
{
SaveElement(elementdata, value);
elementdata.CopyTo(data, offset);
offset += ElementSize;
}
}
return(data);
}
public sealed override EntityProperty Load(byte elementsize, short unknown, bool issparse, bool hasmetavalues, byte[] data)
{
if (elementsize != ElementSize)
{
ErrorManager.SignalError("EntityProperty: Element size is wrong");
}
if (unknown < 0)
{
ErrorManager.SignalError("EntityProperty: Unknown value is invalid");
}
List <EntityPropertyRow <T> > rows = new List <EntityPropertyRow <T> >();
for (int i = 0; i < unknown; i++)
{
rows.Add(new EntityPropertyRow <T>());
}
int offset = 0;
if (issparse)
{
if (offset + 2 * unknown > data.Length)
{
ErrorManager.SignalError("EntityProperty: Not enough data");
}
foreach (EntityPropertyRow <T> row in rows)
{
int valuecount = (ushort)BitConv.FromInt16(data, offset);
offset += 2;
for (int i = 0; i < valuecount; i++)
{
row.Values.Add(new T());
}
}
}
else
{
if (offset + 2 > data.Length)
{
ErrorManager.SignalError("EntityProperty: Not enough data");
}
int valuecount = (ushort)BitConv.FromInt16(data, offset);
offset += 2;
foreach (EntityPropertyRow <T> row in rows)
{
for (int i = 0; i < valuecount; i++)
{
row.Values.Add(new T());
}
}
}
if (hasmetavalues)
{
if (offset + 2 * unknown > data.Length)
{
ErrorManager.SignalError("EntityProperty: Not enough data");
}
foreach (EntityPropertyRow <T> row in rows)
{
short metavalue = BitConv.FromInt16(data, offset);
offset += 2;
row.MetaValue = metavalue;
}
}
Aligner.Align(ref offset, 4);
byte[] elementdata = new byte [elementsize];
foreach (EntityPropertyRow <T> row in rows)
{
if (offset + row.Values.Count * elementsize > data.Length)
{
ErrorManager.SignalError("EntityProperty: Not enough data");
}
for (int i = 0; i < row.Values.Count; i++)
{
Array.Copy(data, offset, elementdata, 0, elementsize);
offset += elementsize;
row.Values[i] = LoadElement(elementdata);
}
}
Aligner.Align(ref offset, 4);
if (offset != data.Length)
{
ErrorManager.SignalIgnorableError("EntityProperty: More data than expected");
}
return(Load(rows));
}
