First

include/tl/format.h

@@ -0,0 +1,61 @@
+#pragma once
+
+#include <format>
+
+#include "tl/detail/prologue.h"
+#include <tl/fixed_vector.h>
+#include "tl/string.h"
+#include "string.h"
+
+namespace tl
+{
+
+template <typename DST>
+constexpr DST format() noexcept
+{
+	return DST();
+}
+
+template <typename DST, typename... Args>
+constexpr DST format(std::format_string<Args...> format_str, Args&&... args) noexcept
+{
+	DST buffer;
+	std::format_to(std::back_inserter(buffer), format_str, std::forward<Args>(args)...);
+	return buffer;
+}
+
+template <typename DST, typename... Args>
+constexpr DST& format_append(DST& dst, std::format_string<Args...> format_str, Args&&... args) noexcept
+{
+	std::format_to(std::back_inserter(dst), format_str, std::forward<Args>(args)...);
+	return dst;
+}
+
+//template <typename DST, typename S>
+//constexpr DST format(const S& format_str) noexcept
+//{
+//	return DST(format_str);
+//}
+
+
+
+template <typename... Args>
+tl::string format(std::format_string<Args...> format_str, Args&&... args) noexcept
+{
+	tl::fixed_vector<char, 1024> buffer;
+	std::format_to(std::back_inserter(buffer), format_str, std::forward<Args>(args)...);
+	return tl::string(buffer.data(), buffer.size());
+}
+
+template <typename... Args>
+tl::string& format_append(tl::string& dst, std::format_string<Args...> format_str, Args&&... args) noexcept
+{
+	tl::fixed_vector<char, 1024> buffer(dst.size());
+	if (!dst.empty())
+		memcpy(buffer.data(), dst.data(), dst.size());
+	std::format_to(std::back_inserter(buffer), format_str, std::forward<Args>(args)...);
+	dst = tl::string(buffer.data(), buffer.size());
+	return dst;
+}
+
+}