migrate ALMOST everything from source tree into client

source/client/common/Util.hpp

@@ -0,0 +1,73 @@
+/********************************************************************
+	Minecraft: Pocket Edition - Decompilation Project
+	Copyright (C) 2023 iProgramInCpp
+	
+	The following code is licensed under the BSD 1 clause license.
+	SPDX-License-Identifier: BSD-1-Clause
+ ********************************************************************/
+
+#pragma once
+
+#include <cstring>
+#include <algorithm>
+#include <string>
+#include <vector>
+#include "LongHack.hpp"
+
+class Util
+{
+public:
+	static std::string stringTrim(const std::string &, const std::string &, bool, bool);
+	static std::string stringTrim(const std::string &);
+
+	template<typename T>
+	static bool remove(std::vector<T>& vec, const T& t)
+	{
+		auto iter = std::find(vec.begin(), vec.end(), t);
+		if (iter == vec.end())
+			return false;
+
+		vec.erase(iter);
+		return true;
+	}
+
+	template<typename T>
+	static int removeAll(std::vector<T>& vec, const std::vector<T>& toRemove)
+	{
+		int removed = 0;
+
+		for (auto rem : toRemove)
+		{
+			if (remove(vec, rem))
+				removed++;
+		}
+
+		return removed;
+	}
+
+	// @TODO: reverse the actual thing? This is something different, but I'm lazy. It uses std::string::replace
+	static void stringReplace(std::string& in, const std::string& what, const std::string& with)
+	{
+		//snippet from Zahlman's post on gamedev:  http://www.gamedev.net/community/forums/topic.asp?topic_id=372125
+		size_t pos = 0;
+		size_t whatLen = what.length();
+		size_t withLen = with.length();
+		while ((pos = in.find(what, pos)) != std::string::npos)
+		{
+			in.replace(pos, whatLen, with);
+			pos += withLen;
+		}
+	}
+
+	static TLong hashCode(const std::string& str)
+	{
+		TLong result = 0;
+
+		for (auto chr : str)
+		{
+			result = result * 31 + chr;
+		}
+
+		return result;
+	}
+};