5 files changed, 25 insertions, 11 deletions
diff --git a/src/JsonUtils.cpp b/src/JsonUtils.cpp
index 6c70e70d3..2c6c8efbc 100644
--- a/src/JsonUtils.cpp
+++ b/src/JsonUtils.cpp
@@ -40,4 +40,16 @@ bool ParseString(const AString & a_JsonStr, Json::Value & a_Root, AString * a_Er
 	return Reader->parse(Doc, Doc + a_JsonStr.size(), &a_Root, a_ErrorMsg);
 }
 
+
+
+
+
+AString SerializeSingleValueJsonObject(
+	const AString & a_Key, const AString & a_Value)
+{
+	Json::Value root;
+	root[a_Key] = a_Value;
+	return JsonUtils::WriteFastString(root);
+}
+
 }  // namespace JsonUtils
diff --git a/src/JsonUtils.h b/src/JsonUtils.h
index d315dbed8..fc35e9f0a 100644
--- a/src/JsonUtils.h
+++ b/src/JsonUtils.h
@@ -14,4 +14,7 @@ AString WriteStyledString(const Json::Value & a_Root);
 
 bool ParseString(const AString & a_JsonStr, Json::Value & a_Root, AString * a_ErrorMsg = nullptr);
 
+/** Creates a Json string representing an object with the specified single value. */
+extern AString SerializeSingleValueJsonObject(const AString & a_Key, const AString & a_Value);
+
 }
diff --git a/src/Protocol/ProtocolRecognizer.cpp b/src/Protocol/ProtocolRecognizer.cpp
index 8bfc18330..fa106342f 100644
--- a/src/Protocol/ProtocolRecognizer.cpp
+++ b/src/Protocol/ProtocolRecognizer.cpp
@@ -229,7 +229,7 @@ void cMultiVersionProtocol::SendDisconnect(cClientHandle & a_Client, const AStri
 		return;
 	}
 
-	const AString Message = fmt::format(FMT_STRING("{{\"text\":\"{}\"}}"), EscapeString(a_Reason));
+	const AString Message = JsonUtils::SerializeSingleValueJsonObject("text", a_Reason);
 	const auto PacketID = GetPacketID(cProtocol::ePacketType::pktDisconnectDuringLogin);
 	cByteBuffer Out(
 		cByteBuffer::GetVarIntSize(PacketID) +
diff --git a/src/Protocol/Protocol_1_14.cpp b/src/Protocol/Protocol_1_14.cpp
index 09ae54cce..31393120e 100644
--- a/src/Protocol/Protocol_1_14.cpp
+++ b/src/Protocol/Protocol_1_14.cpp
@@ -9,6 +9,7 @@ Implements the 1.14 protocol classes:
 #include "Globals.h"
 #include "Protocol_1_14.h"
 #include "Packetizer.h"
+#include "JsonUtils.h"
 #include "../Root.h"
 #include "../Server.h"
 #include "../World.h"
@@ -440,7 +441,7 @@ void cProtocol_1_14::SendWindowOpen(const cWindow & a_Window)
 			}
 		}
 
-		Pkt.WriteString(fmt::format(FMT_STRING("{{\"text\":\"{}\"}}"), a_Window.GetWindowTitle()));
+		Pkt.WriteString(JsonUtils::SerializeSingleValueJsonObject("text", a_Window.GetWindowTitle()));
 	}
 }
 
diff --git a/src/Protocol/Protocol_1_8.cpp b/src/Protocol/Protocol_1_8.cpp
index 2e4e900fc..d7aa6a4e2 100644
--- a/src/Protocol/Protocol_1_8.cpp
+++ b/src/Protocol/Protocol_1_8.cpp
@@ -313,7 +313,7 @@ void cProtocol_1_8_0::SendChat(const AString & a_Message, eChatType a_Type)
 {
 	ASSERT(m_State == 3);  // In game mode?
 
-	SendChatRaw(fmt::format(FMT_STRING("{{\"text\":\"{}\"}}"), EscapeString(a_Message)), a_Type);
+	SendChatRaw(JsonUtils::SerializeSingleValueJsonObject("text", a_Message), a_Type);
 }
 
 
@@ -433,13 +433,13 @@ void cProtocol_1_8_0::SendDisconnect(const AString & a_Reason)
 		case State::Login:
 		{
 			cPacketizer Pkt(*this, pktDisconnectDuringLogin);
-			Pkt.WriteString(fmt::format(FMT_STRING("{{\"text\":\"{}\"}}"), EscapeString(a_Reason)));
+			Pkt.WriteString(JsonUtils::SerializeSingleValueJsonObject("text", a_Reason));
 			break;
 		}
 		case State::Game:
 		{
 			cPacketizer Pkt(*this, pktDisconnectDuringGame);
-			Pkt.WriteString(fmt::format(FMT_STRING("{{\"text\":\"{}\"}}"), EscapeString(a_Reason)));
+			Pkt.WriteString(JsonUtils::SerializeSingleValueJsonObject("text", a_Reason));
 			break;
 		}
 		default:
@@ -1103,7 +1103,7 @@ void cProtocol_1_8_0::SendPlayerListUpdateDisplayName(const cPlayer & a_Player,
 	else
 	{
 		Pkt.WriteBool(true);
-		Pkt.WriteString(fmt::format(FMT_STRING("{{\"text\":\"{}\"}}"), a_CustomName));
+		Pkt.WriteString(JsonUtils::SerializeSingleValueJsonObject("text", a_CustomName));
 	}
 }
 
@@ -1659,9 +1659,7 @@ void cProtocol_1_8_0::SendUpdateSign(Vector3i a_BlockPos, const AString & a_Line
 	AString Lines[] = { a_Line1, a_Line2, a_Line3, a_Line4 };
 	for (size_t i = 0; i < ARRAYCOUNT(Lines); i++)
 	{
-		Json::Value RootValue;
-		RootValue["text"] = Lines[i];
-		Pkt.WriteString(JsonUtils::WriteFastString(RootValue));
+		Pkt.WriteString(JsonUtils::SerializeSingleValueJsonObject("text", Lines[i]));
 	}
 }
 
@@ -1750,7 +1748,7 @@ void cProtocol_1_8_0::SendWindowOpen(const cWindow & a_Window)
 	cPacketizer Pkt(*this, pktWindowOpen);
 	Pkt.WriteBEUInt8(static_cast<UInt8>(a_Window.GetWindowID()));
 	Pkt.WriteString(a_Window.GetWindowTypeName());
-	Pkt.WriteString(fmt::format(FMT_STRING("{{\"text\":\"{}\"}}"), a_Window.GetWindowTitle()));
+	Pkt.WriteString(JsonUtils::SerializeSingleValueJsonObject("text", a_Window.GetWindowTitle()));
 
 	switch (a_Window.GetWindowType())
 	{
@@ -3138,7 +3136,7 @@ void cProtocol_1_8_0::WriteBlockEntity(cFastNBTWriter & a_Writer, const cBlockEn
 			a_Writer.AddString("CustomName", "@");
 			if (!CommandBlockEntity.GetLastOutput().empty())
 			{
-				a_Writer.AddString("LastOutput", fmt::format(FMT_STRING("{{\"text\":\"{}\"}}"), CommandBlockEntity.GetLastOutput()));
+				a_Writer.AddString("LastOutput", JsonUtils::SerializeSingleValueJsonObject("text", CommandBlockEntity.GetLastOutput()));
 			}
 			break;
 		}