public static SymbolReader TryCreateEmbeddedPortablePdbReader(PdbReaderContext pdbContext, Metadata metadata)
{
if (metadata == null)
{
return(null);
}
try {
if (!pdbContext.HasDebugInfo)
{
return(null);
}
var embeddedDir = pdbContext.TryGetDebugDirectoryEntry(ImageDebugType.EmbeddedPortablePdb);
if (embeddedDir == null)
{
return(null);
}
var reader = pdbContext.CreateReader(embeddedDir.PointerToRawData, embeddedDir.SizeOfData);
if (reader.Length < 8)
{
return(null);
}
// "MPDB" = 0x4244504D
if (reader.ReadUInt32() != 0x4244504D)
{
return(null);
}
uint uncompressedSize = reader.ReadUInt32();
// If this fails, see the (hopefully) updated spec:
// https://github.com/dotnet/corefx/blob/master/src/System.Reflection.Metadata/specs/PE-COFF.md#embedded-portable-pdb-debug-directory-entry-type-17
bool newVersion = (uncompressedSize & 0x80000000) != 0;
Debug.Assert(!newVersion);
if (newVersion)
{
return(null);
}
var decompressedBytes = new byte[uncompressedSize];
using (var deflateStream = new DeflateStream(reader.AsStream(), CompressionMode.Decompress)) {
int pos = 0;
while (pos < decompressedBytes.Length)
{
int read = deflateStream.Read(decompressedBytes, pos, decompressedBytes.Length - pos);
if (read == 0)
{
break;
}
pos += read;
}
if (pos != decompressedBytes.Length)
{
return(null);
}
var stream = ByteArrayDataReaderFactory.Create(decompressedBytes, filename: null);
return(TryCreate(pdbContext, stream, isEmbeddedPortablePdb: true));
}
}
catch (IOException) {
}
return(null);
}
public static SymbolReader Create(PdbReaderOptions options, Metadata metadata, byte[] pdbData)
{
var pdbContext = new PdbReaderContext(metadata.PEImage, options);
if (!pdbContext.HasDebugInfo)
{
return(null);
}
return(CreateCore(pdbContext, metadata, ByteArrayDataReaderFactory.Create(pdbData, filename: null)));
}
public static DataReaderFactory TryCreateDataReaderFactory(string filename)
{
try {
if (!File.Exists(filename))
{
return(null);
}
// Don't use memory mapped I/O
return(ByteArrayDataReaderFactory.Create(File.ReadAllBytes(filename), filename));
}
catch (IOException) {
}
catch (UnauthorizedAccessException) {
}
catch (SecurityException) {
}
return(null);
}
