internal MetadataStream(IMetadata metadata, StreamHeader header)
{
if (metadata is null)
{
throw new ArgumentNullException(nameof(metadata));
}
if (header is null)
{
throw new ArgumentNullException(nameof(header));
}
_peImage = metadata.PEImage;
_offset = (uint)metadata.StorageSignature.FOA + header.Offset;
_rawData = (byte *)_peImage.RawData + _offset;
_length = header.Size;
}
public Metadata(IPEImage peImage)
{
if (peImage is null)
{
throw new ArgumentNullException(nameof(peImage));
}
if (!peImage.IsDotNetImage)
{
throw new InvalidOperationException();
}
bool?isCompressed;
_peImage = peImage;
_cor20Header = new Cor20Header(this);
_storageSignature = new StorageSignature(this);
_storageHeader = new StorageHeader(this);
_streamHeaders = new StreamHeader[_storageHeader.StreamCount];
for (int i = 0; i < _streamHeaders.Length; i++)
{
_streamHeaders[i] = new StreamHeader(this, (uint)i);
}
isCompressed = null;
foreach (StreamHeader header in _streamHeaders)
{
string name;
name = header.DisplayName;
if (isCompressed is null)
{
if (name == "#~")
{
isCompressed = true;
}
else if (name == "#-")
{
isCompressed = false;
}
}
if (name == "#Schema")
{
isCompressed = false;
}
}
if (isCompressed is null)
{
throw new BadImageFormatException("Metadata table (#~ / #-) not found");
}
if (isCompressed.Value)
{
for (int i = _streamHeaders.Length - 1; i >= 0; i--)
{
switch (_streamHeaders[i].DisplayName)
{
case "#~":
if (_tableStream is null)
{
_tableStream = new TableStream(this, i, true);
}
break;
case "#Strings":
if (_stringHeap is null)
{
_stringHeap = new StringHeap(this, i);
}
break;
case "#US":
if (_userStringHeap is null)
{
_userStringHeap = new UserStringHeap(this, i);
}
break;
case "#GUID":
if (_guidHeap is null)
{
_guidHeap = new GuidHeap(this, i);
}
break;
case "#Blob":
if (_blobHeap is null)
{
_blobHeap = new BlobHeap(this, i);
}
break;
}
}
}
else
{
for (int i = 0; i < _streamHeaders.Length; i++)
{
switch (_streamHeaders[i].DisplayName.ToUpperInvariant())
{
case "#~":
case "#-":
if (_tableStream is null)
{
_tableStream = new TableStream(this, i, false);
}
break;
case "#STRINGS":
if (_stringHeap is null)
{
_stringHeap = new StringHeap(this, i);
}
break;
case "#US":
if (_userStringHeap is null)
{
_userStringHeap = new UserStringHeap(this, i);
}
break;
case "#GUID":
if (_guidHeap is null)
{
_guidHeap = new GuidHeap(this, i);
}
break;
case "#BLOB":
if (_blobHeap is null)
{
_blobHeap = new BlobHeap(this, i);
}
break;
}
}
}
}
