void PatchStreamHeaderOffset(MetadataHeap heap)
{
long pos = m_binaryWriter.BaseStream.Position;
m_binaryWriter.BaseStream.Position = heap.GetStream().Header.Offset;
m_binaryWriter.Write((uint)(pos - m_mdStart));
m_binaryWriter.BaseStream.Position = pos;
}
void CreateStream(string name)
{
MetadataStream stream = new MetadataStream();
stream.Header.Name = name;
stream.Heap = MetadataHeap.HeapFactory(stream);
m_root.Streams.Add(stream);
}
void SetHeapIndexSize(MetadataHeap heap, byte flag)
{
if (heap == null)
{
return;
}
TablesHeap th = m_root.Streams.TablesHeap;
heap.IndexSize = ((th.HeapSizes & flag) > 0) ? 4 : 2;
}
public override void VisitMetadataStreamCollection(MetadataStreamCollection coll)
{
MetadataStream tables = new MetadataStream();
tables.Header.Name = MetadataStream.Tables;
tables.Heap = MetadataHeap.HeapFactory(tables);
TablesHeap th = tables.Heap as TablesHeap;
th.Tables = new TableCollection(th);
m_root.Streams.Add(tables);
}
void SetHeapSize(MetadataHeap heap, MemoryBinaryWriter data, byte flag)
{
if (data.BaseStream.Length > 65536)
{
m_root.Streams.TablesHeap.HeapSizes |= flag;
heap.IndexSize = 4;
}
else
{
heap.IndexSize = 2;
}
}
void VisitHeap(MetadataHeap heap)
{
long cursor = m_binaryReader.BaseStream.Position;
m_binaryReader.BaseStream.Position = m_root.GetImage().ResolveVirtualAddress(
m_root.GetImage().CLIHeader.Metadata.VirtualAddress)
+ heap.GetStream().Header.Offset;
heap.Data = m_binaryReader.ReadBytes((int)heap.GetStream().Header.Size);
m_binaryReader.BaseStream.Position = cursor;
}
public override void VisitMetadataStreamHeader(MetadataStream.MetadataStreamHeader header)
{
header.Offset = m_binaryReader.ReadUInt32();
header.Size = m_binaryReader.ReadUInt32();
StringBuilder buffer = new StringBuilder();
while (true)
{
char cur = (char)m_binaryReader.ReadSByte();
if (cur == '\0')
{
break;
}
buffer.Append(cur);
}
header.Name = buffer.ToString();
if (header.Name.Length == 0)
{
throw new MetadataFormatException("Invalid stream name");
}
long rootpos = m_root.GetImage().ResolveVirtualAddress(
m_root.GetImage().CLIHeader.Metadata.VirtualAddress);
long curpos = m_binaryReader.BaseStream.Position;
if (header.Size != 0)
{
curpos -= rootpos;
}
curpos += 3;
curpos &= ~3;
if (header.Size != 0)
{
curpos += rootpos;
}
m_binaryReader.BaseStream.Position = curpos;
header.Stream.Heap = MetadataHeap.HeapFactory(header.Stream);
}