Big f***ing cleanup part 1

include/Nazara/Core/StringExt.hpp

@@ -0,0 +1,61 @@
+// 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
+
+#pragma once
+
+#ifndef NAZARA_CORE_STRING_EXT_HPP
+#define NAZARA_CORE_STRING_EXT_HPP
+
+#include <Nazara/Prerequisites.hpp>
+#include <Nazara/Core/Unicode.hpp>
+#include <string>
+
+namespace Nz
+{
+	struct CaseIndependent {};
+	struct UnicodeAware {};
+
+	// std::string is assumed to contains UTF-8
+	NAZARA_CORE_API std::string FromUtf16String(const char16_t* u16str);
+	NAZARA_CORE_API std::string FromUtf16String(const std::u16string_view& u16str);
+
+	NAZARA_CORE_API std::string FromUtf32String(const char32_t* u32str);
+	NAZARA_CORE_API std::string FromUtf32String(const std::u32string_view& u32str);
+
+	NAZARA_CORE_API std::string FromWideString(const wchar_t* wstr);
+	NAZARA_CORE_API std::string FromWideString(const std::wstring_view& str);
+
+	inline bool IsNumber(const char* str);
+	inline bool IsNumber(const std::string_view& str);
+
+	template<typename... Args> bool StartsWith(const std::string_view& str, const char* s, Args&&... args);
+	inline bool StartsWith(const std::string_view& str, const std::string_view& s);
+	NAZARA_CORE_API bool StartsWith(const std::string_view& str, const std::string_view& s, CaseIndependent);
+	NAZARA_CORE_API bool StartsWith(const std::string_view& str, const std::string_view& s, CaseIndependent, UnicodeAware);
+
+	inline std::string ToLower(const char* str);
+	NAZARA_CORE_API std::string ToLower(const std::string_view& str);
+
+	inline std::string ToLower(const char* str, UnicodeAware);
+	NAZARA_CORE_API std::string ToLower(const std::string_view& str, UnicodeAware);
+
+	inline std::string ToUpper(const char* str);
+	NAZARA_CORE_API std::string ToUpper(const std::string_view& str);
+
+	inline std::string ToUpper(const char* str, UnicodeAware);
+	NAZARA_CORE_API std::string ToUpper(const std::string_view& str, UnicodeAware);
+
+	inline std::u16string ToUtf16String(const char* str);
+	NAZARA_CORE_API std::u16string ToUtf16String(const std::string_view& str);
+
+	inline std::u32string ToUtf32String(const char* str);
+	NAZARA_CORE_API std::u32string ToUtf32String(const std::string_view& str);
+
+	inline std::wstring ToWideString(const char* str);
+	NAZARA_CORE_API std::wstring ToWideString(const std::string_view& str);
+}
+
+#include <Nazara/Core/StringExt.inl>
+
+#endif // NAZARA_ALGORITHM_CORE_HPP