C# CodedInputStream.ReadString方法代码示例

 /// <summary>
 /// Decode a value of the given type.
 /// Should not be called directly. This interface is used by service client stubs.
 /// </summary>
 public static object Decode(ByteString value, Type type, Connection client)
 {
     var stream = new CodedInputStream (value.ToByteArray ());
     if (type == typeof(double))
         return stream.ReadDouble ();
     else if (type == typeof(float))
         return stream.ReadFloat ();
     else if (type == typeof(int))
         return stream.ReadInt32 ();
     else if (type == typeof(long))
         return stream.ReadInt64 ();
     else if (type == typeof(uint))
         return stream.ReadUInt32 ();
     else if (type == typeof(ulong))
         return stream.ReadUInt64 ();
     else if (type == typeof(bool))
         return stream.ReadBool ();
     else if (type == typeof(string))
         return stream.ReadString ();
     else if (type == typeof(byte[]))
         return stream.ReadBytes ().ToByteArray ();
     else if (type.IsEnum)
         return stream.ReadInt32 ();
     else if (typeof(RemoteObject).IsAssignableFrom (type)) {
         if (client == null)
             throw new ArgumentException ("Client not passed when decoding remote object");
         var id = stream.ReadUInt64 ();
         if (id == 0)
             return null;
         return (RemoteObject)Activator.CreateInstance (type, client, id);
     } else if (typeof(IMessage).IsAssignableFrom (type)) {
         IMessage message = (IMessage)Activator.CreateInstance (type);
         message.MergeFrom (stream);
         return message;
     } else if (type.IsGenericType && type.GetGenericTypeDefinition () == typeof(IList<>))
         return DecodeList (value, type, client);
     else if (type.IsGenericType && type.GetGenericTypeDefinition () == typeof(IDictionary<,>))
         return DecodeDictionary (value, type, client);
     else if (type.IsGenericType && type.GetGenericTypeDefinition () == typeof(ISet<>))
         return DecodeSet (value, type, client);
     else if (type.IsGenericType &&
              (type.GetGenericTypeDefinition () == typeof(Tuple<>) ||
              type.GetGenericTypeDefinition () == typeof(Tuple<,>) ||
              type.GetGenericTypeDefinition () == typeof(Tuple<,,>) ||
              type.GetGenericTypeDefinition () == typeof(Tuple<,,,>) ||
              type.GetGenericTypeDefinition () == typeof(Tuple<,,,,>) ||
              type.GetGenericTypeDefinition () == typeof(Tuple<,,,,,>)))
         return DecodeTuple (value, type, client); // TODO: ugly handing of tuple types
     throw new ArgumentException (type + " is not a serializable type");
 }

        public void SkipGroup_WrongEndGroupTag()
        {
            // Create an output stream with:
            // Field 1: string "field 1"
            // Start group 2
            //   Field 3: fixed int32
            // End group 4 (should give an error)
            var stream = new MemoryStream();
            var output = new CodedOutputStream(stream);
            output.WriteTag(1, WireFormat.WireType.LengthDelimited);
            output.WriteString("field 1");

            // The outer group...
            output.WriteTag(2, WireFormat.WireType.StartGroup);
            output.WriteTag(3, WireFormat.WireType.Fixed32);
            output.WriteFixed32(100);
            output.WriteTag(4, WireFormat.WireType.EndGroup);
            output.Flush();
            stream.Position = 0;

            // Now act like a generated client
            var input = new CodedInputStream(stream);
            Assert.AreEqual(WireFormat.MakeTag(1, WireFormat.WireType.LengthDelimited), input.ReadTag());
            Assert.AreEqual("field 1", input.ReadString());
            Assert.AreEqual(WireFormat.MakeTag(2, WireFormat.WireType.StartGroup), input.ReadTag());
            Assert.Throws<InvalidProtocolBufferException>(input.SkipLastField);
        }

        public void SkipGroup()
        {
            // Create an output stream with a group in:
            // Field 1: string "field 1"
            // Field 2: group containing:
            //   Field 1: fixed int32 value 100
            //   Field 2: string "ignore me"
            //   Field 3: nested group containing
            //      Field 1: fixed int64 value 1000
            // Field 3: string "field 3"
            var stream = new MemoryStream();
            var output = new CodedOutputStream(stream);
            output.WriteTag(1, WireFormat.WireType.LengthDelimited);
            output.WriteString("field 1");

            // The outer group...
            output.WriteTag(2, WireFormat.WireType.StartGroup);
            output.WriteTag(1, WireFormat.WireType.Fixed32);
            output.WriteFixed32(100);
            output.WriteTag(2, WireFormat.WireType.LengthDelimited);
            output.WriteString("ignore me");
            // The nested group...
            output.WriteTag(3, WireFormat.WireType.StartGroup);
            output.WriteTag(1, WireFormat.WireType.Fixed64);
            output.WriteFixed64(1000);
            // Note: Not sure the field number is relevant for end group...
            output.WriteTag(3, WireFormat.WireType.EndGroup);

            // End the outer group
            output.WriteTag(2, WireFormat.WireType.EndGroup);

            output.WriteTag(3, WireFormat.WireType.LengthDelimited);
            output.WriteString("field 3");
            output.Flush();
            stream.Position = 0;

            // Now act like a generated client
            var input = new CodedInputStream(stream);
            Assert.AreEqual(WireFormat.MakeTag(1, WireFormat.WireType.LengthDelimited), input.ReadTag());
            Assert.AreEqual("field 1", input.ReadString());
            Assert.AreEqual(WireFormat.MakeTag(2, WireFormat.WireType.StartGroup), input.ReadTag());
            input.SkipLastField(); // Should consume the whole group, including the nested one.
            Assert.AreEqual(WireFormat.MakeTag(3, WireFormat.WireType.LengthDelimited), input.ReadTag());
            Assert.AreEqual("field 3", input.ReadString());
        }

        public void ReadInvalidUtf8()
        {
            MemoryStream ms = new MemoryStream();
            CodedOutputStream output = new CodedOutputStream(ms);

            uint tag = WireFormat.MakeTag(1, WireFormat.WireType.LengthDelimited);
            output.WriteRawVarint32(tag);
            output.WriteRawVarint32(1);
            output.WriteRawBytes(new byte[] {0x80});
            output.Flush();
            ms.Position = 0;

            CodedInputStream input = new CodedInputStream(ms);

            Assert.AreEqual(tag, input.ReadTag());
            string text = input.ReadString();
            Assert.AreEqual('\ufffd', text[0]);
        }

 /// <summary>
 /// Convert a Protocol Buffer value type, encoded as a byte string, to a C# value.
 /// </summary>
 public static object ReadValue(ByteString value, Type type)
 {
     if (value.Length == 0)
         throw new ArgumentException ("Value is empty");
     var stream = new CodedInputStream (value.ToByteArray ());
     if (type == typeof(double)) {
         return stream.ReadDouble ();
     } else if (type == typeof(float)) {
         return stream.ReadFloat ();
     } else if (type == typeof(int)) {
         return stream.ReadInt32 ();
     } else if (type == typeof(long)) {
         return stream.ReadInt64 ();
     } else if (type == typeof(uint)) {
         return stream.ReadUInt32 ();
     } else if (type == typeof(ulong)) {
         return stream.ReadUInt64 ();
     } else if (type == typeof(bool)) {
         return stream.ReadBool ();
     } else if (type == typeof(string)) {
         return stream.ReadString ();
     } else if (type == typeof(byte[])) {
         return stream.ReadBytes ().ToByteArray();
     }
     throw new ArgumentException (type + " is not a Protocol Buffer value type");
 }