From a66d56aece307431337fba99acdbe27602430eb6 Mon Sep 17 00:00:00 2001
From: JosJuice <josjuice@gmail.com>
Date: Sun, 1 Apr 2018 12:26:50 +0200
Subject: [PATCH] Use configured locale in UICommon::FormatSize

StringFromFormat always uses the C locale, so we can't use it if we want
the decimal separator to be locale aware, but we can use a stringstream.
---
 Source/Core/UICommon/UICommon.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Source/Core/UICommon/UICommon.cpp b/Source/Core/UICommon/UICommon.cpp
index 783a3c94eb..f761313add 100644
--- a/Source/Core/UICommon/UICommon.cpp
+++ b/Source/Core/UICommon/UICommon.cpp
@@ -5,8 +5,10 @@
 #include <algorithm>
 #include <clocale>
 #include <cmath>
+#include <iomanip>
 #include <locale>
 #include <memory>
+#include <sstream>
 #ifdef _WIN32
 #include <shlobj.h>  // for SHGetFolderPath
 #endif
@@ -406,7 +408,10 @@ std::string FormatSize(u64 bytes)
 
   // Don't need exact values, only 5 most significant digits
   const double unit_size = std::pow(2, unit * 10);
-  return StringFromFormat("%.2f %s", bytes / unit_size, GetStringT(unit_symbols[unit]).c_str());
+  std::stringstream ss;
+  ss << std::fixed << std::setprecision(2);
+  ss << bytes / unit_size << ' ' << GetStringT(unit_symbols[unit]);
+  return ss.str();
 }
 
 }  // namespace UICommon