ReadLength() public method

Reads a length for length-delimited data.
This is internally just reading a varint, but this method exists to make the calling code clearer.
public ReadLength ( ) : int
return int
コード例 #1
0
ファイル: FieldCodec.cs プロジェクト: adozenlines/protobuf
            internal static T Read <T>(CodedInputStream input, FieldCodec <T> codec)
            {
                int length   = input.ReadLength();
                int oldLimit = input.PushLimit(length);

                uint tag;
                T    value = codec.DefaultValue;

                while (input.ReadTag(out tag))
                {
                    if (tag == 0)
                    {
                        throw InvalidProtocolBufferException.InvalidTag();
                    }
                    if (tag == codec.Tag)
                    {
                        value = codec.Read(input);
                    }
                    if (WireFormat.IsEndGroupTag(tag))
                    {
                        break;
                    }
                }
                input.CheckLastTagWas(0);
                input.PopLimit(oldLimit);

                return(value);
            }
コード例 #2
0
            internal static T Read <T>(CodedInputStream input, FieldCodec <T> codec)
            {
                int length   = input.ReadLength();
                int oldLimit = input.PushLimit(length);

                uint tag;
                T    value = codec.DefaultValue;

                while ((tag = input.ReadTag()) != 0)
                {
                    if (tag == codec.Tag)
                    {
                        value = codec.Read(input);
                    }
                    else
                    {
                        input.SkipLastField();
                    }
                }
                input.CheckReadEndOfStreamTag();
                input.PopLimit(oldLimit);

                return(value);
            }
コード例 #3
0
        public void TestCodedInputOutputPosition()
        {
            byte[] content = new byte[110];
            for (int i = 0; i < content.Length; i++)
            {
                content[i] = (byte)i;
            }

            byte[] child = new byte[120];
            {
                MemoryStream      ms   = new MemoryStream(child);
                CodedOutputStream cout = new CodedOutputStream(ms, 20);
                // Field 11: numeric value: 500
                cout.WriteTag(11, WireFormat.WireType.Varint);
                Assert.AreEqual(1, cout.Position);
                cout.WriteInt32(500);
                Assert.AreEqual(3, cout.Position);
                //Field 12: length delimited 120 bytes
                cout.WriteTag(12, WireFormat.WireType.LengthDelimited);
                Assert.AreEqual(4, cout.Position);
                cout.WriteBytes(ByteString.CopyFrom(content));
                Assert.AreEqual(115, cout.Position);
                // Field 13: fixed numeric value: 501
                cout.WriteTag(13, WireFormat.WireType.Fixed32);
                Assert.AreEqual(116, cout.Position);
                cout.WriteSFixed32(501);
                Assert.AreEqual(120, cout.Position);
                cout.Flush();
            }

            byte[] bytes = new byte[130];
            {
                CodedOutputStream cout = new CodedOutputStream(bytes);
                // Field 1: numeric value: 500
                cout.WriteTag(1, WireFormat.WireType.Varint);
                Assert.AreEqual(1, cout.Position);
                cout.WriteInt32(500);
                Assert.AreEqual(3, cout.Position);
                //Field 2: length delimited 120 bytes
                cout.WriteTag(2, WireFormat.WireType.LengthDelimited);
                Assert.AreEqual(4, cout.Position);
                cout.WriteBytes(ByteString.CopyFrom(child));
                Assert.AreEqual(125, cout.Position);
                // Field 3: fixed numeric value: 500
                cout.WriteTag(3, WireFormat.WireType.Fixed32);
                Assert.AreEqual(126, cout.Position);
                cout.WriteSFixed32(501);
                Assert.AreEqual(130, cout.Position);
                cout.Flush();
            }
            // Now test Input stream:
            {
                CodedInputStream cin = new CodedInputStream(new MemoryStream(bytes), new byte[50], 0, 0);
                Assert.AreEqual(0, cin.Position);
                // Field 1:
                uint tag = cin.ReadTag();
                Assert.AreEqual(1, tag >> 3);
                Assert.AreEqual(1, cin.Position);
                Assert.AreEqual(500, cin.ReadInt32());
                Assert.AreEqual(3, cin.Position);
                //Field 2:
                tag = cin.ReadTag();
                Assert.AreEqual(2, tag >> 3);
                Assert.AreEqual(4, cin.Position);
                int childlen = cin.ReadLength();
                Assert.AreEqual(120, childlen);
                Assert.AreEqual(5, cin.Position);
                int oldlimit = cin.PushLimit((int)childlen);
                Assert.AreEqual(5, cin.Position);
                // Now we are reading child message
                {
                    // Field 11: numeric value: 500
                    tag = cin.ReadTag();
                    Assert.AreEqual(11, tag >> 3);
                    Assert.AreEqual(6, cin.Position);
                    Assert.AreEqual(500, cin.ReadInt32());
                    Assert.AreEqual(8, cin.Position);
                    //Field 12: length delimited 120 bytes
                    tag = cin.ReadTag();
                    Assert.AreEqual(12, tag >> 3);
                    Assert.AreEqual(9, cin.Position);
                    ByteString bstr = cin.ReadBytes();
                    Assert.AreEqual(110, bstr.Length);
                    Assert.AreEqual((byte)109, bstr[109]);
                    Assert.AreEqual(120, cin.Position);
                    // Field 13: fixed numeric value: 501
                    tag = cin.ReadTag();
                    Assert.AreEqual(13, tag >> 3);
                    // ROK - Previously broken here, this returned 126 failing to account for bufferSizeAfterLimit
                    Assert.AreEqual(121, cin.Position);
                    Assert.AreEqual(501, cin.ReadSFixed32());
                    Assert.AreEqual(125, cin.Position);
                    Assert.IsTrue(cin.IsAtEnd);
                }
                cin.PopLimit(oldlimit);
                Assert.AreEqual(125, cin.Position);
                // Field 3: fixed numeric value: 501
                tag = cin.ReadTag();
                Assert.AreEqual(3, tag >> 3);
                Assert.AreEqual(126, cin.Position);
                Assert.AreEqual(501, cin.ReadSFixed32());
                Assert.AreEqual(130, cin.Position);
                Assert.IsTrue(cin.IsAtEnd);
            }
        }
コード例 #4
0
        public void TestCodedInputOutputPosition()
        {
            byte[] content = new byte[110];
            for (int i = 0; i < content.Length; i++)
                content[i] = (byte)i;

            byte[] child = new byte[120];
            {
                MemoryStream ms = new MemoryStream(child);
                CodedOutputStream cout = new CodedOutputStream(ms, 20);
                // Field 11: numeric value: 500
                cout.WriteTag(11, WireFormat.WireType.Varint);
                Assert.AreEqual(1, cout.Position);
                cout.WriteInt32(500);
                Assert.AreEqual(3, cout.Position);
                //Field 12: length delimited 120 bytes
                cout.WriteTag(12, WireFormat.WireType.LengthDelimited);
                Assert.AreEqual(4, cout.Position);
                cout.WriteBytes(ByteString.CopyFrom(content));
                Assert.AreEqual(115, cout.Position);
                // Field 13: fixed numeric value: 501
                cout.WriteTag(13, WireFormat.WireType.Fixed32);
                Assert.AreEqual(116, cout.Position);
                cout.WriteSFixed32(501);
                Assert.AreEqual(120, cout.Position);
                cout.Flush();
            }

            byte[] bytes = new byte[130];
            {
                CodedOutputStream cout = new CodedOutputStream(bytes);
                // Field 1: numeric value: 500
                cout.WriteTag(1, WireFormat.WireType.Varint);
                Assert.AreEqual(1, cout.Position);
                cout.WriteInt32(500);
                Assert.AreEqual(3, cout.Position);
                //Field 2: length delimited 120 bytes
                cout.WriteTag(2, WireFormat.WireType.LengthDelimited);
                Assert.AreEqual(4, cout.Position);
                cout.WriteBytes(ByteString.CopyFrom(child));
                Assert.AreEqual(125, cout.Position);
                // Field 3: fixed numeric value: 500
                cout.WriteTag(3, WireFormat.WireType.Fixed32);
                Assert.AreEqual(126, cout.Position);
                cout.WriteSFixed32(501);
                Assert.AreEqual(130, cout.Position);
                cout.Flush();
            }
            // Now test Input stream:
            {
                CodedInputStream cin = new CodedInputStream(new MemoryStream(bytes), new byte[50], 0, 0);
                Assert.AreEqual(0, cin.Position);
                // Field 1:
                uint tag = cin.ReadTag();
                Assert.AreEqual(1, tag >> 3);
                Assert.AreEqual(1, cin.Position);
                Assert.AreEqual(500, cin.ReadInt32());
                Assert.AreEqual(3, cin.Position);
                //Field 2:
                tag = cin.ReadTag();
                Assert.AreEqual(2, tag >> 3);
                Assert.AreEqual(4, cin.Position);
                int childlen = cin.ReadLength();
                Assert.AreEqual(120, childlen);
                Assert.AreEqual(5, cin.Position);
                int oldlimit = cin.PushLimit((int)childlen);
                Assert.AreEqual(5, cin.Position);
                // Now we are reading child message
                {
                    // Field 11: numeric value: 500
                    tag = cin.ReadTag();
                    Assert.AreEqual(11, tag >> 3);
                    Assert.AreEqual(6, cin.Position);
                    Assert.AreEqual(500, cin.ReadInt32());
                    Assert.AreEqual(8, cin.Position);
                    //Field 12: length delimited 120 bytes
                    tag = cin.ReadTag();
                    Assert.AreEqual(12, tag >> 3);
                    Assert.AreEqual(9, cin.Position);
                    ByteString bstr = cin.ReadBytes();
                    Assert.AreEqual(110, bstr.Length);
                    Assert.AreEqual((byte) 109, bstr[109]);
                    Assert.AreEqual(120, cin.Position);
                    // Field 13: fixed numeric value: 501
                    tag = cin.ReadTag();
                    Assert.AreEqual(13, tag >> 3);
                    // ROK - Previously broken here, this returned 126 failing to account for bufferSizeAfterLimit
                    Assert.AreEqual(121, cin.Position);
                    Assert.AreEqual(501, cin.ReadSFixed32());
                    Assert.AreEqual(125, cin.Position);
                    Assert.IsTrue(cin.IsAtEnd);
                }
                cin.PopLimit(oldlimit);
                Assert.AreEqual(125, cin.Position);
                // Field 3: fixed numeric value: 501
                tag = cin.ReadTag();
                Assert.AreEqual(3, tag >> 3);
                Assert.AreEqual(126, cin.Position);
                Assert.AreEqual(501, cin.ReadSFixed32());
                Assert.AreEqual(130, cin.Position);
                Assert.IsTrue(cin.IsAtEnd);
            }
        }
コード例 #5
0
ファイル: FieldCodec.cs プロジェクト: drolean/Arctium-RE
            internal static T Read <T>(CodedInputStream input, FieldCodec <T> codec)
            {
                int byteLimit = input.ReadLength();
                T   result;

                while (true)
                {
IL_FA:
                    uint arg_C8_0 = 1476935752u;
                    while (true)
                    {
                        uint num;
                        switch ((num = (arg_C8_0 ^ 2018772964u)) % 9u)
                        {
                        case 0u:
                            input.SkipLastField();
                            arg_C8_0 = 1768391466u;
                            continue;

                        case 1u:
                        {
                            uint num2;
                            arg_C8_0 = (((num2 = input.ReadTag()) == 0u) ? 789788880u : 1000495088u);
                            continue;
                        }

                        case 3u:
                            arg_C8_0 = (num * 422428889u ^ 15908708u);
                            continue;

                        case 4u:
                            result   = codec.Read(input);
                            arg_C8_0 = (num * 2015424451u ^ 1456283564u);
                            continue;

                        case 5u:
                        {
                            uint num2;
                            arg_C8_0 = ((num2 == codec.Tag) ? 627669222u : 345821031u);
                            continue;
                        }

                        case 6u:
                        {
                            input.CheckReadEndOfStreamTag();
                            int oldLimit;
                            input.PopLimit(oldLimit);
                            arg_C8_0 = (num * 1368242210u ^ 1133084529u);
                            continue;
                        }

                        case 7u:
                        {
                            int oldLimit = input.PushLimit(byteLimit);
                            result   = codec.DefaultValue;
                            arg_C8_0 = (num * 2466023856u ^ 3651674u);
                            continue;
                        }

                        case 8u:
                            goto IL_FA;
                        }
                        return(result);
                    }
                }
                return(result);
            }
コード例 #6
0
        void Read(CodedInputStream stream)
        {
            byte code = (byte) stream.ReadTag();
            byte digestSize = (byte) stream.ReadLength();

            Algorithm = HashingAlgorithm.Codes[code];
            if (Algorithm == null)
            {
                Algorithm = HashingAlgorithm.Register("ipfs-" + code, code, digestSize);
                RaiseUnknownHashingAlgorithm(Algorithm);
            }
            else if (digestSize != Algorithm.DigestSize)
            {
                throw new InvalidDataException(string.Format("The digest size {0} is wrong for {1}; it should be {2}.", digestSize, Algorithm.Name, Algorithm.DigestSize));
            }

            Digest = stream.ReadSomeBytes(digestSize);
        }