unsafe override public void FromRawData(byte[] rawData)
{
strings = new SortedList();
strings.Add(0, String.Empty);
if (rawData == null)
{
return;
}
int len = rawData.Length;
dataLen = len;
// the first entry in the string heap is always EmptyString
if (len < 1 || rawData [0] != 0)
{
throw new BadMetaDataException("Invalid #Strings heap.");
}
int idx = 1;
for (int i = 1; i < len; i++)
{
if (rawData [i] == 0)
{
fixed(void *p = &rawData[idx])
{
string s = PEUtils.GetString((sbyte *)p, 0, i - idx, Encoding.UTF8);
strings.Add(idx, s);
}
idx = i + 1;
}
}
}
unsafe public void Read(BinaryReader reader)
{
filePos = reader.BaseStream.Position;
sig = reader.ReadUInt32();
if (sig != Sig)
{
throw new BadImageException("Invalid MetaData Signature.");
}
majVer = reader.ReadInt16();
minVer = reader.ReadInt16();
reserved = reader.ReadUInt32();
// Length of version string.
len = reader.ReadInt32();
// Read version string.
if (len != 0)
{
sbyte *pVer = stackalloc sbyte [len];
sbyte *p = pVer;
long pos = reader.BaseStream.Position;
int i;
for (i = len; --i >= 0;)
{
sbyte c = reader.ReadSByte();
if (c == 0)
{
break;
}
*p++ = c;
}
verStr = PEUtils.GetString(pVer, 0, len - i - 1, Encoding.UTF8);
// Round up to dword boundary, relative to header start.
pos += len;
pos -= filePos;
pos += 3;
pos &= ~3;
pos += filePos;
// Advance file pointer.
reader.BaseStream.Position = pos;
}
else
{
VersionString = String.Empty;
}
flags = reader.ReadInt16();
nStreams = reader.ReadInt16();
streams = new Hashtable(nStreams);
// load all streams into memory
for (int i = nStreams; --i >= 0;)
{
MDStream s = new MDStream(this);
s.Read(reader);
// TODO: check for duplicated streams,
// use Add instead of indexer.
streams[s.Name] = s;
}
MDStream tabs = Streams["#~"] as MDStream;
// Try uncompressed stream.
if (tabs == null)
{
tabs = Streams["#-"] as MDStream;
}
if (tabs == null)
{
throw new BadMetaDataException("Missing #~ stream.");
}
TablesHeap tabsHeap = tabs.Heap as TablesHeap;
// cache index sizes
strIdx = tabsHeap.StringsIndexSize;
guidIdx = tabsHeap.GUIDIndexSize;
blobIdx = tabsHeap.BlobIndexSize;
}
