C# BlobBuilder.WriteContentTo方法代碼示例

        private static void WriteNameTable(Stream peStream)
        {
            var writer = new BlobBuilder(SizeOfNameTable);
            foreach (char ch in CorEntryPointDll)
            {
                writer.WriteByte((byte)ch);
            }

            writer.WriteByte(0);
            writer.WriteUInt16(0);
            Debug.Assert(writer.Count == SizeOfNameTable);

            writer.WriteContentTo(peStream);
        }

        private static void WriteCorHeader(Stream peStream, CorHeader corHeader)
        {
            var writer = new BlobBuilder(CorHeaderSize);
            writer.WriteUInt32(CorHeaderSize);
            writer.WriteUInt16(corHeader.MajorRuntimeVersion);
            writer.WriteUInt16(corHeader.MinorRuntimeVersion); 
            writer.WriteUInt32((uint)corHeader.MetadataDirectory.RelativeVirtualAddress); 
            writer.WriteUInt32((uint)corHeader.MetadataDirectory.Size);
            writer.WriteUInt32((uint)corHeader.Flags);
            writer.WriteUInt32((uint)corHeader.EntryPointTokenOrRelativeVirtualAddress);
            writer.WriteUInt32((uint)(corHeader.ResourcesDirectory.Size == 0 ? 0 : corHeader.ResourcesDirectory.RelativeVirtualAddress)); // 28
            writer.WriteUInt32((uint)corHeader.ResourcesDirectory.Size);
            writer.WriteUInt32((uint)(corHeader.StrongNameSignatureDirectory.Size == 0 ? 0 : corHeader.StrongNameSignatureDirectory.RelativeVirtualAddress)); // 36
            writer.WriteUInt32((uint)corHeader.StrongNameSignatureDirectory.Size);
            writer.WriteUInt32((uint)corHeader.CodeManagerTableDirectory.RelativeVirtualAddress); 
            writer.WriteUInt32((uint)corHeader.CodeManagerTableDirectory.Size); 
            writer.WriteUInt32((uint)corHeader.VtableFixupsDirectory.RelativeVirtualAddress); 
            writer.WriteUInt32((uint)corHeader.VtableFixupsDirectory.Size); 
            writer.WriteUInt32((uint)corHeader.ExportAddressTableJumpsDirectory.RelativeVirtualAddress);
            writer.WriteUInt32((uint)corHeader.ExportAddressTableJumpsDirectory.Size);
            writer.WriteUInt64(0);
            Debug.Assert(writer.Count == CorHeaderSize);
            Debug.Assert(writer.Count % 4 == 0);

            writer.WriteContentTo(peStream);
        }

        private void WriteImportAddressTable(Stream peStream, int importTableRva)
        {
            var writer = new BlobBuilder(SizeOfImportAddressTable);
            int ilRVA = importTableRva + 40;
            int hintRva = ilRVA + (_is32bit ? 12 : 16);

            // Import Address Table
            if (_is32bit)
            {
                writer.WriteUInt32((uint)hintRva); // 4
                writer.WriteUInt32(0); // 8
            }
            else
            {
                writer.WriteUInt64((uint)hintRva); // 8
                writer.WriteUInt64(0); // 16
            }

            Debug.Assert(writer.Count == SizeOfImportAddressTable);
            writer.WriteContentTo(peStream);
        }

        private void WriteImportTable(Stream peStream, int importTableRva, int importAddressTableRva)
        {
            var writer = new BlobBuilder(SizeOfImportTable);
            int ilRVA = importTableRva + 40;
            int hintRva = ilRVA + (_is32bit ? 12 : 16);
            int nameRva = hintRva + 12 + 2;

            // Import table
            writer.WriteUInt32((uint)ilRVA); // 4
            writer.WriteUInt32(0); // 8
            writer.WriteUInt32(0); // 12
            writer.WriteUInt32((uint)nameRva); // 16
            writer.WriteUInt32((uint)importAddressTableRva); // 20
            writer.WriteBytes(0, 20); // 40

            // Import Lookup table
            if (_is32bit)
            {
                writer.WriteUInt32((uint)hintRva); // 44
                writer.WriteUInt32(0); // 48
                writer.WriteUInt32(0); // 52
            }
            else
            {
                writer.WriteUInt64((uint)hintRva); // 48
                writer.WriteUInt64(0); // 56
            }

            // Hint table
            writer.WriteUInt16(0); // Hint 54|58

            foreach (char ch in CorEntryPointName)
            {
                writer.WriteByte((byte)ch); // 65|69
            }

            writer.WriteByte(0); // 66|70
            Debug.Assert(writer.Count == SizeOfImportTable);

            writer.WriteContentTo(peStream);
        }

//.........這裏部分代碼省略.........
                    nativePdbWriterOpt.AssertAllDefinitionsHaveTokens(mdWriter.Module.GetSymbolToLocationMap());
#endif
                }
            }

            Stream peStream = getPeStream();
            if (peStream == null)
            {
                return false;
            }

            ContentId nativePdbContentId = nativePdbWriterOpt?.GetContentId() ?? default(ContentId);

            // the writer shall not be used after this point for writing:
            nativePdbWriterOpt = null;

            var metadataSerializer = mdWriter.GetTypeSystemMetadataSerializer();

            var peBuilder = new PEBuilder(
                machine: properties.Machine,
                sectionAlignment: properties.SectionAlignment,
                fileAlignment: properties.FileAlignment,
                imageBase: properties.BaseAddress,
                majorLinkerVersion: properties.LinkerMajorVersion,
                minorLinkerVersion: properties.LinkerMinorVersion,
                majorOperatingSystemVersion: 4,
                minorOperatingSystemVersion: 0,
                majorImageVersion: 0,
                minorImageVersion: 0,
                majorSubsystemVersion: properties.MajorSubsystemVersion,
                minorSubsystemVersion: properties.MinorSubsystemVersion,
                subsystem: properties.Subsystem,
                dllCharacteristics: properties.DllCharacteristics,
                imageCharacteristics: properties.ImageCharacteristics,
                sizeOfStackReserve: properties.SizeOfStackReserve,
                sizeOfStackCommit: properties.SizeOfStackCommit,
                sizeOfHeapReserve: properties.SizeOfHeapReserve,
                sizeOfHeapCommit: properties.SizeOfHeapCommit,
                deterministicIdProvider: isDeterministic ? new Func<BlobBuilder, ContentId>(content => ContentId.FromHash(CryptographicHashProvider.ComputeSha1(content))) : null);

            ContentId portablePdbContentId;
            if (mdWriter.EmitStandaloneDebugMetadata)
            {
                Debug.Assert(getPortablePdbStreamOpt != null);

                var debugMetadataBuilder = new BlobBuilder();
                var debugMetadataSerializer = mdWriter.GetStandaloneDebugMetadataSerializer(metadataSerializer.MetadataSizes, debugEntryPointHandle);
                debugMetadataSerializer.SerializeMetadata(debugMetadataBuilder, peBuilder.IdProvider, out portablePdbContentId);

                // write to Portable PDB stream:
                Stream portablePdbStream = getPortablePdbStreamOpt();
                if (portablePdbStream != null)
                {
                    debugMetadataBuilder.WriteContentTo(portablePdbStream);
                }
            }
            else
            {
                portablePdbContentId = default(ContentId);
            }

            var peDirectoriesBuilder = new PEDirectoriesBuilder();

            peBuilder.AddManagedSections(
                peDirectoriesBuilder,
                metadataSerializer,
                ilBuilder,
                mappedFieldDataBuilder,
                managedResourceBuilder,
                CreateNativeResourceSectionSerializer(context.Module),
                CalculateStrongNameSignatureSize(context.Module),
                entryPointHandle,
                pdbPathOpt,
                nativePdbContentId,
                portablePdbContentId,
                properties.CorFlags);

            var peBlob = new BlobBuilder();
            ContentId peContentId;
            peBuilder.Serialize(peBlob, peDirectoriesBuilder, out peContentId);

            // Patch MVID
            if (!mvidFixup.IsDefault)
            {
                var mvidWriter = new BlobWriter(mvidFixup);
                mvidWriter.WriteBytes(peContentId.Guid);
                Debug.Assert(mvidWriter.RemainingBytes == 0);
            }

            try
            {
                peBlob.WriteContentTo(peStream);
            }
            catch (Exception e) when (!(e is OperationCanceledException))
            {
                throw new PeWritingException(e);
            }

            return true;
        }

        private void WriteTextSection(
            Stream peStream,
            SectionHeader textSection,
            int importTableRva,
            int importAddressTableRva,
            int entryPointToken,
            BlobBuilder metadataWriter,
            BlobBuilder ilWriter,
            BlobBuilder mappedFieldDataWriter,
            BlobBuilder managedResourceWriter,
            MetadataSizes metadataSizes,
            ContentId nativePdbContentId,
            ContentId portablePdbContentId,
            out long metadataPosition)
        {
            // TODO: zero out all bytes:
            peStream.Position = textSection.PointerToRawData;

            if (_properties.RequiresStartupStub)
            {
                WriteImportAddressTable(peStream, importTableRva);
            }

            var corHeader = CreateCorHeader(metadataSizes, textSection.RelativeVirtualAddress, entryPointToken);
            WriteCorHeader(peStream, corHeader);

            // IL:
            ilWriter.Align(4);
            ilWriter.WriteContentTo(peStream);

            // metadata:
            metadataPosition = peStream.Position;
            Debug.Assert(metadataWriter.Count % 4 == 0);
            metadataWriter.WriteContentTo(peStream);

            // managed resources:
            Debug.Assert(managedResourceWriter.Count % 4 == 0);
            managedResourceWriter.WriteContentTo(peStream);

            // strong name signature:
            WriteSpaceForHash(peStream, metadataSizes.StrongNameSignatureSize);

            if (EmitPdb)
            {
                WriteDebugTable(peStream, textSection, nativePdbContentId, portablePdbContentId, metadataSizes);
            }

            if (_properties.RequiresStartupStub)
            {
                WriteImportTable(peStream, importTableRva, importAddressTableRva);
                WriteNameTable(peStream);
                WriteRuntimeStartupStub(peStream, importAddressTableRva);
            }

            // mapped field data:            
            mappedFieldDataWriter.WriteContentTo(peStream);

            // TODO: zero out all bytes:
            int alignedPosition = textSection.PointerToRawData + textSection.SizeOfRawData;
            if (peStream.Position != alignedPosition)
            {
                peStream.Position = alignedPosition - 1;
                peStream.WriteByte(0);
            }
        }

        public unsafe void Write_Errors()
        {
            var builder = new BlobBuilder(16);
            Assert.Throws<ArgumentNullException>(() => builder.WriteUTF16((char[])null));
            Assert.Throws<ArgumentNullException>(() => builder.WriteUTF16((string)null));
            Assert.Throws<ArgumentNullException>(() => builder.WriteUTF8(null, allowUnpairedSurrogates: true));
            Assert.Throws<ArgumentNullException>(() => builder.WriteUTF8(null, allowUnpairedSurrogates: true));
            Assert.Throws<ArgumentNullException>(() => builder.TryWriteBytes((Stream)null, 0));
            Assert.Throws<ArgumentNullException>(() => builder.WriteBytes(null));
            Assert.Throws<ArgumentNullException>(() => builder.WriteBytes(null, 0, 0));
            Assert.Throws<ArgumentNullException>(() => builder.WriteBytes((byte*)null, 0));
            Assert.Throws<ArgumentNullException>(() => builder.WriteBytes(default(ImmutableArray<byte>)));
            Assert.Throws<ArgumentNullException>(() => builder.WriteBytes(default(ImmutableArray<byte>), 0, 0));

            var bw = default(BlobWriter);
            Assert.Throws<ArgumentNullException>(() => builder.WriteContentTo(ref bw));
            Assert.Throws<ArgumentNullException>(() => builder.WriteContentTo((Stream)null));
            Assert.Throws<ArgumentNullException>(() => builder.WriteContentTo((BlobBuilder)null));

            Assert.Throws<ArgumentOutOfRangeException>(() => builder.TryWriteBytes(new MemoryStream(), -1));
            Assert.Throws<ArgumentOutOfRangeException>(() => builder.WriteBytes(0, -1));
            Assert.Throws<ArgumentOutOfRangeException>(() => builder.WriteBytes(new byte[] { }, 1, 0));
            Assert.Throws<ArgumentOutOfRangeException>(() => builder.WriteBytes(new byte[] { }, 0, 1));
            Assert.Throws<ArgumentOutOfRangeException>(() => builder.WriteBytes(new byte[] { }, 0, -1));
            Assert.Throws<ArgumentOutOfRangeException>(() => builder.WriteBytes(ImmutableArray<byte>.Empty, 1, 0));
            Assert.Throws<ArgumentOutOfRangeException>(() => builder.WriteBytes(ImmutableArray<byte>.Empty, 0, 1));
            Assert.Throws<ArgumentOutOfRangeException>(() => builder.WriteBytes(ImmutableArray<byte>.Empty, 1, -1));
        }

 public ExceptionRegionEncoder WriteInstructions(BlobBuilder codeBuilder, out int bodyOffset)
 {
     bodyOffset = WriteHeader(codeBuilder.Count);
     codeBuilder.WriteContentTo(Builder);
     return CreateExceptionEncoder();
 }

        public void WriteContentToStream_Errors()
        {
            var builder = new BlobBuilder(16);
            builder.WriteByte(1);

            Assert.Throws<ArgumentNullException>(() => builder.WriteContentTo((Stream)null));
            Assert.Throws<NotSupportedException>(() => builder.WriteContentTo(new MemoryStream(new byte[] { 1 }, writable: false)));
        }

        public void WriteContentToBlobBuilder()
        {
            var builder1 = new BlobBuilder(16);
            for (int i = 0; i < 20; i++)
            {
                builder1.WriteByte((byte)i);
            }

            var builder2 = new BlobBuilder(256);
            builder1.WriteContentTo(builder2);
            AssertEx.Equal(new byte[]
            {
                0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13
            }, builder2.ToArray());

            builder1.WriteByte(0xff);

            builder1.WriteContentTo(builder2);
            AssertEx.Equal(new byte[]
            {
                0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13,
                0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13,
                0xff,
            }, builder2.ToArray());
        }

        public void WriteContentToStream()
        {
            var builder = new BlobBuilder(16);
            for (int i = 0; i < 20; i++)
            {
                builder.WriteByte((byte)i);
            }

            var stream = new MemoryStream();
            builder.WriteContentTo(stream);
            AssertEx.Equal(new byte[]
            {
                0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13
            }, stream.ToArray());

            builder.WriteByte(0xff);

            builder.WriteContentTo(stream);
            AssertEx.Equal(new byte[]
            {
                0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13,
                0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13,
                0xff,
            }, stream.ToArray());
        }

//.........這裏部分代碼省略.........
                majorLinkerVersion: properties.LinkerMajorVersion,
                minorLinkerVersion: properties.LinkerMinorVersion,
                majorOperatingSystemVersion: 4,
                minorOperatingSystemVersion: 0,
                majorImageVersion: 0,
                minorImageVersion: 0,
                majorSubsystemVersion: properties.MajorSubsystemVersion,
                minorSubsystemVersion: properties.MinorSubsystemVersion,
                subsystem: properties.Subsystem,
                dllCharacteristics: properties.DllCharacteristics,
                imageCharacteristics: properties.ImageCharacteristics,
                sizeOfStackReserve: properties.SizeOfStackReserve,
                sizeOfStackCommit: properties.SizeOfStackCommit,
                sizeOfHeapReserve: properties.SizeOfHeapReserve,
                sizeOfHeapCommit: properties.SizeOfHeapCommit);

            var deterministicIdProvider = isDeterministic ?
                new Func<IEnumerable<Blob>, BlobContentId>(content => BlobContentId.FromHash(CryptographicHashProvider.ComputeSha1(content))) :
                null;

            BlobBuilder portablePdbToEmbed = null;
            if (mdWriter.EmitStandaloneDebugMetadata)
            {
                mdWriter.AddRemainingEmbeddedDocuments(mdWriter.Module.DebugDocumentsBuilder.EmbeddedDocuments);

                var portablePdbBlob = new BlobBuilder();
                var portablePdbBuilder = mdWriter.GetPortablePdbBuilder(metadataRootBuilder.Sizes, debugEntryPointHandle, deterministicIdProvider);
                pdbContentId = portablePdbBuilder.Serialize(portablePdbBlob);
                portablePdbVersion = portablePdbBuilder.FormatVersion;

                if (getPortablePdbStreamOpt == null)
                {
                    // embed to debug directory:
                    portablePdbToEmbed = portablePdbBlob;
                }
                else
                {
                    // write to Portable PDB stream:
                    Stream portablePdbStream = getPortablePdbStreamOpt();
                    if (portablePdbStream != null)
                    {
                        portablePdbBlob.WriteContentTo(portablePdbStream);
                    }
                }
            }

            DebugDirectoryBuilder debugDirectoryBuilder;
            if (pdbPathOpt != null || isDeterministic || portablePdbToEmbed != null)
            {
                debugDirectoryBuilder = new DebugDirectoryBuilder();
                if (pdbPathOpt != null)
                {
                    string paddedPath = isDeterministic ? pdbPathOpt : PadPdbPath(pdbPathOpt);
                    debugDirectoryBuilder.AddCodeViewEntry(paddedPath, pdbContentId, portablePdbVersion);
                }

                if (isDeterministic)
                {
                    debugDirectoryBuilder.AddReproducibleEntry();
                }

                if (portablePdbToEmbed != null)
                {
                    debugDirectoryBuilder.AddEmbeddedPortablePdbEntry(portablePdbToEmbed, portablePdbVersion);
                }
            }
            else
            {
                debugDirectoryBuilder = null;
            }

            var peBuilder = new ManagedPEBuilder(
                peHeaderBuilder,
                metadataRootBuilder,
                ilBuilder,
                mappedFieldDataBuilder,
                managedResourceBuilder,
                CreateNativeResourceSectionSerializer(context.Module),
                debugDirectoryBuilder,
                CalculateStrongNameSignatureSize(context.Module),
                entryPointHandle,
                properties.CorFlags,
                deterministicIdProvider);

            var peBlob = new BlobBuilder();
            var peContentId = peBuilder.Serialize(peBlob);

            PatchModuleVersionIds(mvidFixup, mvidStringFixup, peContentId.Guid);

            try
            {
                peBlob.WriteContentTo(peStream);
            }
            catch (Exception e) when (!(e is OperationCanceledException))
            {
                throw new PeWritingException(e);
            }

            return true;
        }

        /// <exception cref="ArgumentNullException"><paramref name="source"/> is null.</exception>
        public void WriteBytes(BlobBuilder source)
        {
            if (source == null)
            {
                throw new ArgumentNullException(nameof(source));
            }

            source.WriteContentTo(ref this);
        }

        private void WriteRuntimeStartupStub(Stream peStream, int importAddressTableRva)
        {
            var writer = new BlobBuilder(16);
            // entry point code, consisting of a jump indirect to _CorXXXMain
            if (_is32bit)
            {
                //emit 0's (nops) to pad the entry point code so that the target address is aligned on a 4 byte boundary.
                for (uint i = 0, n = (uint)(BitArithmeticUtilities.Align((uint)peStream.Position, 4) - peStream.Position); i < n; i++)
                {
                    writer.WriteByte(0);
                }

                writer.WriteUInt16(0);
                writer.WriteByte(0xff);
                writer.WriteByte(0x25); //4
                writer.WriteUInt32((uint)importAddressTableRva + (uint)_properties.BaseAddress); //8
            }
            else
            {
                //emit 0's (nops) to pad the entry point code so that the target address is aligned on a 8 byte boundary.
                for (uint i = 0, n = (uint)(BitArithmeticUtilities.Align((uint)peStream.Position, 8) - peStream.Position); i < n; i++)
                {
                    writer.WriteByte(0);
                }

                writer.WriteUInt32(0);
                writer.WriteUInt16(0);
                writer.WriteByte(0xff);
                writer.WriteByte(0x25); //8
                writer.WriteUInt64((ulong)importAddressTableRva + _properties.BaseAddress); //16
            }

            writer.WriteContentTo(peStream);
        }

        public PermissionSetEncoder AddPermission(string typeName, BlobBuilder encodedArguments)
        {
            if (typeName == null)
            {
                Throw.ArgumentNull(nameof(typeName));
            }

            if (encodedArguments == null)
            {
                Throw.ArgumentNull(nameof(encodedArguments));
            }

            if (encodedArguments.Count > BlobWriterImpl.MaxCompressedIntegerValue)
            {
                Throw.BlobTooLarge(nameof(encodedArguments));
            }

            Builder.WriteSerializedString(typeName);
            Builder.WriteCompressedInteger(encodedArguments.Count);
            encodedArguments.WriteContentTo(Builder);
            return new PermissionSetEncoder(Builder);
        }