modestacker class, stacks modes and returns a string list of up to MAXMODES modes

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@5389 e03df62e-2008-0410-955e-edbf42e46eb7

include/hashcomp.h

@@ -123,6 +123,17 @@ namespace irc
 	        bool operator()(const insp_inaddr &s1, const insp_inaddr &s2) const;
 	};
 
+	class modestacker
+	{
+	 private:
+		std::deque<std::string> sequence;
+		bool adding;
+	 public:
+		modestacker(bool add);
+		void Push(char modeletter, const std::string &parameter);
+		std::deque<std::string> GetStackedLine();
+	};
+
 	/** irc::tokenstream reads a string formatted as per RFC1459 and RFC2812.
 	 * It will split the string into 'tokens' each containing one parameter
 	 * from the string.

src/hashcomp.cpp

@@ -309,3 +309,31 @@ const char* irc::Spacify(char* n)
 }
 
 
+irc::modestacker::modestacker(bool add) : adding(add)
+{
+	sequence.clear();
+	sequence.push_back("");
+}
+
+void irc::modestacker::Push(char modeletter, const std::string &parameter)
+{
+	*(sequence.begin()) += modeletter;
+	sequence.push_back(parameter);
+}
+
+std::deque<std::string> irc::modestacker::GetStackedLine()
+{
+	std::deque<std::string> result;
+	result.push_back("");
+
+	while (!sequence[0].empty() && (sequence.size() > 1))
+	{
+		result[0] += *(sequence[0].begin());
+		result.push_back(sequence[1]);
+		sequence[0].erase(sequence[0].begin());
+		sequence.erase(sequence.begin() + 1);
+	}
+
+	return result;
+}
+