Remove CStr::FromUInt

There is `std::to_string` which does the same. For most uses it's better
to use `fmt::format`.

source/graphics/PreprocessorWrapper.cpp

@@ -1,4 +1,4 @@
-/* Copyright (C) 2025 Wildfire Games.
+/* Copyright (C) 2026 Wildfire Games.
  * This file is part of 0 A.D.
  *
  * 0 A.D. is free software: you can redistribute it and/or modify
@@ -156,7 +156,8 @@ bool ResolveIncludesImpl(
 			it = includeCache.emplace(path, std::move(includeContent)).first;
 		}
 		// We need to insert #line directives to have correct line numbers in errors.
-		chunks.emplace_back(lineDirective + "1\n" + it->second + "\n" + lineDirective + CStr::FromUInt(line + 1) + "\n");
+		chunks.emplace_back(fmt::format("{}1\n{}\n{}{}\n", lineDirective, it->second, lineDirective,
+			line + 1));
 		processedParts.emplace_back(currentPart.substr(0, lineStart));
 		if (!ResolveIncludesImpl(chunks.back(), includeCache, includeCallback, chunks, processedParts))
 			return false;

source/gui/CGUI.cpp

@@ -755,7 +755,7 @@ void CGUI::Xeromyces_ReadObject(const XMBData& xmb, XMBElement element, IGUIObje
 	// Check if name isn't set, generate an internal name in that case.
 	if (!NameSet)
 	{
-		object->SetName("__internal(" + CStr::FromInt(m_InternalNameNumber) + ")");
+		object->SetName(fmt::format("__internal({})", m_InternalNameNumber));
 		++m_InternalNameNumber;
 	}
 
@@ -977,7 +977,7 @@ void CGUI::Xeromyces_ReadRepeat(const XMBData& xmb, XMBElement element, IGUIObje
 
 	for (int n = 0; n < count; ++n)
 	{
-		NameSubst.emplace_back(var, "[" + CStr::FromInt(n) + "]");
+		NameSubst.emplace_back(var, fmt::format("[{}]", n));
 
 		XERO_ITER_EL(element, child)
 		{

source/network/NetServer.cpp

@@ -54,6 +54,7 @@
 
 #include <algorithm>
 #include <cstring>
+#include <fmt/format.h>
 #include <functional>
 #include <iterator>
 #include <memory>
@@ -70,6 +71,10 @@
 #include <miniupnpc/upnperrors.h>
 #endif
 
+#if FMT_VERSION >= 80000
+#include <fmt/xchar.h>
+#endif
+
 /**
  * Number of peers to allocate for the enet host.
  * Limited by ENET_PROTOCOL_MAXIMUM_PEER_ID (4096).
@@ -1641,7 +1646,7 @@ CStrW CNetServerWorker::DeduplicatePlayerName(const CStrW& original)
 		if (unique)
 			return name;
 
-		name = original + L" (" + CStrW::FromUInt(id++) + L")";
+		name = fmt::format(L"{}({})", original, id++);
 	}
 }
 

source/network/NetStats.cpp

@@ -19,6 +19,7 @@
 
 #include "NetStats.h"
 
+#include <fmt/format.h>
 #include <string>
 
 enum
@@ -77,7 +78,7 @@ const std::vector<ProfileColumn>& CNetStatsTable::GetColumns()
 		std::lock_guard<std::mutex> lock(m_Mutex);
 
 		for (size_t i = 0; i < m_LatchedData.size(); ++i)
-			m_ColumnDescriptions.push_back(ProfileColumn("Peer "+CStr::FromUInt(i), 80));
+			m_ColumnDescriptions.push_back(ProfileColumn(fmt::format("Peer {}", i), 80));
 	}
 
 	return m_ColumnDescriptions;
@@ -95,7 +96,7 @@ CStr CNetStatsTable::GetCellText(size_t row, size_t col)
 	#define ROW(id, title, member) \
 	case id: \
 		if (col == 0) return title; \
-		if (m_Peer) return CStr::FromUInt(m_Peer->member); \
+		if (m_Peer) return std::to_string(m_Peer->member); \
 		return "???"
 
 	switch(row)
@@ -129,7 +130,7 @@ void CNetStatsTable::LatchHostState(const ENetHost& host)
 	std::lock_guard<std::mutex> lock(m_Mutex);
 
 #define ROW(id, title, member) \
-	m_LatchedData[i].push_back(CStr::FromUInt(host.peers[i].member));
+	m_LatchedData[i].push_back(std::to_string(host.peers[i].member));
 
 	m_LatchedData.clear();
 	m_LatchedData.resize(host.peerCount);

source/network/StringConverters.h

@@ -1,4 +1,4 @@
-/* Copyright (C) 2025 Wildfire Games.
+/* Copyright (C) 2026 Wildfire Games.
  * This file is part of 0 A.D.
  *
  * 0 A.D. is free software: you can redistribute it and/or modify
@@ -25,7 +25,7 @@
 
 static inline CStr NetMessageStringConvert(u32 arg)
 {
-	return CStr::FromUInt(arg);
+	return std::to_string(arg);
 }
 
 static inline CStr NetMessageStringConvert(const CStr8& arg)

source/ps/CStr.cpp

@@ -202,13 +202,6 @@ CStr CStr::Repeat(const CStr& str, size_t reps)
 
 // Construction from numbers:
 
-CStr CStr::FromUInt(unsigned int n)
-{
-	tstringstream<StrBase> ss;
-	ss << n;
-	return ss.str();
-}
-
 CStr CStr::FromInt64(i64 n)
 {
 	tstringstream<StrBase> ss;

source/ps/CStr.h

@@ -95,7 +95,6 @@ public:
 
 	// Conversions:
 
-	static CStr FromUInt(unsigned int n);
 	static CStr FromInt64(i64 n);
 	static CStr FromDouble(double n);
 

source/scriptinterface/Stats.cpp

@@ -90,21 +90,21 @@ CStr CScriptStatsTable::GetCellText(size_t row, size_t col)
 		if (col == 0)
 			return "max nominal heap bytes";
 		uint32_t n = JS_GetGCParameter(m_ScriptInterfaces.at(col-1).first->GetGeneralJSContext(), JSGC_MAX_BYTES);
-		return CStr::FromUInt(n);
+		return std::to_string(n);
 	}
 	case Row_Bytes:
 	{
 		if (col == 0)
 			return "allocated bytes";
 		uint32_t n = JS_GetGCParameter(m_ScriptInterfaces.at(col-1).first->GetGeneralJSContext(), JSGC_BYTES);
-		return CStr::FromUInt(n);
+		return std::to_string(n);
 	}
 	case Row_NumberGC:
 	{
 		if (col == 0)
 			return "number of GCs";
 		uint32_t n = JS_GetGCParameter(m_ScriptInterfaces.at(col-1).first->GetGeneralJSContext(), JSGC_NUMBER);
-		return CStr::FromUInt(n);
+		return std::to_string(n);
 	}
 	default:
 		return "???";
@@ -116,4 +116,4 @@ AbstractProfileTable* CScriptStatsTable::GetChild(size_t /*row*/)
 	return 0;
 }
 
-} // namespace Script
+} // namespace Script