FormatInteger (unsigned)

Source/utils/format_int.cpp

@@ -44,4 +44,36 @@ std::string FormatInteger(int n)
 	return out;
 }
 
+std::string FormatInteger(uint32_t n)
+{
+	constexpr size_t GroupSize = 3;
+
+	char buf[40];
+	char *begin = buf;
+	const char *end = BufCopy(buf, n);
+	const size_t len = end - begin;
+
+	std::string out;
+	const size_t numLen = len;
+	if (numLen <= GroupSize) {
+		out.append(begin, len);
+		return out;
+	}
+
+	const std::string_view separator = _(/* TRANSLATORS: Thousands separator */ ",");
+	out.reserve(len + separator.size() * (numLen - 1) / GroupSize);
+
+	size_t mlen = numLen % GroupSize;
+	if (mlen == 0)
+		mlen = GroupSize;
+	out.append(begin, mlen);
+	begin += mlen;
+	for (; begin != end; begin += GroupSize) {
+		out.append(separator);
+		out.append(begin, GroupSize);
+	}
+
+	return out;
+}
+
 } // namespace devilution

Source/utils/format_int.hpp

@@ -8,5 +8,6 @@ namespace devilution {
  * @brief Formats integer with thousands separator.
  */
 std::string FormatInteger(int n);
+std::string FormatInteger(uint32_t n);
 
 } // namespace devilution