Big f***ing cleanup part 1

include/Nazara/Core/StringExt.inl

@@ -0,0 +1,82 @@
+// Copyright (C) 2017 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Core module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Core/StringExt.hpp>
+#include <Nazara/Core/Debug.hpp>
+
+namespace Nz
+{
+	bool IsNumber(const char* str)
+	{
+		std::size_t size = std::strlen(str);
+		return IsNumber(std::string_view(str, size));
+	}
+
+	bool IsNumber(const std::string_view& str)
+	{
+		return !str.empty() && std::find_if(str.begin(), str.end(), [](unsigned char c) { return !std::isdigit(c); }) == str.end();
+	}
+
+	template<typename... Args> bool StartsWith(const std::string_view& str, const char* s, Args&&... args)
+	{
+		std::size_t size = std::strlen(s);
+		return StartsWith(str, std::string_view(s, size), std::forward<Args>(args)...);
+	}
+
+	bool StartsWith(const std::string_view& str, const std::string_view& s)
+	{
+		//FIXME: Replace with proper C++20 value once it's available
+#if __cplusplus > 201703L
+		// C++20
+		return str.starts_with(s);
+#else
+		return str.compare(0, s.size(), s.data()) == 0;
+#endif
+	}
+
+	inline std::string ToLower(const char* str)
+	{
+		std::size_t size = std::strlen(str);
+		return ToLower(std::string_view(str, size));
+	}
+
+	inline std::string ToLower(const char* str, UnicodeAware)
+	{
+		std::size_t size = std::strlen(str);
+		return ToLower(std::string_view(str, size), UnicodeAware{});
+	}
+
+	inline std::string ToUpper(const char* str)
+	{
+		std::size_t size = std::strlen(str);
+		return ToUpper(std::string_view(str, size));
+	}
+
+	inline std::string ToUpper(const char* str, UnicodeAware)
+	{
+		std::size_t size = std::strlen(str);
+		return ToUpper(std::string_view(str, size), UnicodeAware{});
+	}
+
+	inline std::u16string ToUtf16String(const char* str)
+	{
+		std::size_t size = std::strlen(str);
+		return ToUtf16String(std::string_view(str, size));
+	}
+
+	inline std::u32string ToUtf32String(const char* str)
+	{
+		std::size_t size = std::strlen(str);
+		return ToUtf32String(std::string_view(str, size));
+	}
+
+	inline std::wstring ToWideString(const char* str)
+	{
+		std::size_t size = std::strlen(str);
+		return ToWideString(std::string_view(str, size));
+	}
+
+}
+
+#include <Nazara/Core/DebugOff.hpp>