/// <summary>Create instance of BLOB heap class</summary>
/// <param name="meta">MetaData directory</param>
/// <param name="header">.NET stream header</param>
/// <exception cref="T:InvalidOperationException">Blob heap can read only UnicodeString and Blob heaps</exception>
public BlobHeap(MetaData meta, Cor.STREAM_HEADER header)
: base(meta, header)
{
if (base.Header.Type != Cor.StreamHeaderType.UnicodeSting && base.Header.Type != Cor.StreamHeaderType.Blob)
{
throw new InvalidOperationException();
}
}
/// <summary>Create instance of Guid heap class</summary>
/// <param name="meta">MetaData directory</param>
/// <param name="header">.NET stream header</param>
/// <exception cref="T:InvalidOperationException">GuidHeap can only read Guid heaps</exception>
public GuidHeap(MetaData meta, Cor.STREAM_HEADER header)
: base(meta, header)
{
if (base.Header.Type != Cor.StreamHeaderType.Guid)
{
throw new InvalidOperationException();
}
}
/// <summary>Create instance of stream tables class</summary>
/// <param name="meta">MetaData directory</param>
/// <param name="header">stream header</param>
/// <exception cref="T:InvalidOperationException">StreamTable can only read optimized or unoptimized stream tables</exception>
public StreamTables(MetaData meta, Cor.STREAM_HEADER header)
: base(meta, header)
{
if (header.Type != Cor.StreamHeaderType.StreamTable && header.Type != Cor.StreamHeaderType.StreamTableUnoptimized)
{
throw new InvalidOperationException();
}
}
private IEnumerable <StreamHeader> GetStreams()
{
var meta = this.Header;
if (meta.HasValue)
{
UInt32 position = base.Directory.VirtualAddress +
MetaData.SizeOfCor20Metadata1 +
meta.Value.Length +
MetaData.SizeOfCor20MetaData2;
for (Int32 loop = 0; loop < meta.Value.Streams; loop++)
{
Cor.STREAM_HEADER header = base.Parent.Parent.Header.PtrToStructure <Cor.STREAM_HEADER>(position);
switch (header.Type)
{
case Cor.StreamHeaderType.StreamTable:
case Cor.StreamHeaderType.StreamTableUnoptimized: //TODO: Не проверено. Пока ещё не нашёл ни одного файла с таким заголовком
yield return(new StreamTables(this, header));
break;
case Cor.StreamHeaderType.Guid:
yield return(new GuidHeap(this, header));
break;
case Cor.StreamHeaderType.Blob:
yield return(new BlobHeap(this, header));
break;
case Cor.StreamHeaderType.String:
yield return(new StringHeap(this, header));
break;
case Cor.StreamHeaderType.UnicodeSting:
yield return(new USHeap(this, header));
break;
default:
yield return(new StreamHeader(this, header));
break;
}
Int32 length = header.Name.Length + 1;
Int32 padding = ((length % 4) != 0) ? (4 - (length % 4)) : 0;
position += sizeof(UInt32) * 2 + (UInt32)length + (UInt32)padding;
}
}
}
/// <summary>Create instance of the typed stream header</summary>
/// <param name="loader">MetaData</param>
/// <param name="header">Stream header</param>
public StreamHeaderTyped(MetaData loader, Cor.STREAM_HEADER header)
: base(loader, header)
{
}
/// <summary>Create instance of stream header class</summary>
/// <param name="loader">MetaData</param>
/// <param name="header">Stream header</param>
public StreamHeader(MetaData loader, Cor.STREAM_HEADER header)
{
this._meta = loader;
this._header = header;
}
// TODO: Неизвестно как правильно обращаться к элементам массива. См. комментарий к методу DataString
//private SortedList<Int32, String> _data;
/// <summary>Create instance of user strings heap class</summary>
/// <param name="meta">MetaData directory</param>
/// <param name="header">.NET stream header</param>
public USHeap(MetaData meta, Cor.STREAM_HEADER header)
: base(meta, header)
{
}