1 files changed, 198 insertions, 0 deletions
diff --git a/include/numericbuilder.h b/include/numericbuilder.h
new file mode 100644
index 000000000..17aa9e0c8
--- /dev/null
+++ b/include/numericbuilder.h
@@ -0,0 +1,198 @@
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ *   Copyright (C) 2015-2016 Attila Molnar <attilamolnar@hush.com>
+ *
+ * This file is part of InspIRCd.  InspIRCd is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation, version 2.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#pragma once
+
+namespace Numeric
+{
+	class WriteNumericSink;
+	class WriteRemoteNumericSink;
+
+	template <char Sep, bool SendEmpty, typename Sink>
+	class GenericBuilder;
+
+	template <char Sep = ',', bool SendEmpty = false>
+	class Builder;
+
+	template <unsigned int NumStaticParams, bool SendEmpty, typename Sink>
+	class GenericParamBuilder;
+
+	template <unsigned int NumStaticParams, bool SendEmpty = false>
+	class ParamBuilder;
+}
+
+class Numeric::WriteNumericSink
+{
+	LocalUser* const user;
+
+ public:
+	WriteNumericSink(LocalUser* u)
+		: user(u)
+	{
+	}
+
+	void operator()(Numeric& numeric) const
+	{
+		user->WriteNumeric(numeric);
+	}
+};
+
+class Numeric::WriteRemoteNumericSink
+{
+	User* const user;
+
+ public:
+	WriteRemoteNumericSink(User* u)
+		: user(u)
+	{
+	}
+
+	void operator()(Numeric& numeric) const
+	{
+		user->WriteRemoteNumeric(numeric);
+	}
+};
+
+template <char Sep, bool SendEmpty, typename Sink>
+class Numeric::GenericBuilder
+{
+	Sink sink;
+	Numeric numeric;
+	const std::string::size_type max;
+
+	bool HasRoom(const std::string::size_type additional) const
+	{
+		return (numeric.GetParams().back().size() + additional <= max);
+	}
+
+ public:
+	GenericBuilder(Sink s, unsigned int num, bool addparam = true, size_t additionalsize = 0)
+		: sink(s)
+		, numeric(num)
+		, max(ServerInstance->Config->Limits.MaxLine - ServerInstance->Config->ServerName.size() - additionalsize - 10)
+	{
+		if (addparam)
+			numeric.push(std::string());
+	}
+
+	Numeric& GetNumeric() { return numeric; }
+
+	void Add(const std::string& entry)
+	{
+		if (!HasRoom(entry.size()))
+			Flush();
+		numeric.GetParams().back().append(entry).push_back(Sep);
+	}
+
+	void Add(const std::string& entry1, const std::string& entry2)
+	{
+		if (!HasRoom(entry1.size() + entry2.size()))
+			Flush();
+		numeric.GetParams().back().append(entry1).append(entry2).push_back(Sep);
+	}
+
+	void Flush()
+	{
+		std::string& data = numeric.GetParams().back();
+		if (IsEmpty())
+		{
+			if (!SendEmpty)
+				return;
+		}
+		else
+		{
+			data.erase(data.size()-1);
+		}
+
+		sink(numeric);
+		data.clear();
+	}
+
+	bool IsEmpty() const { return (numeric.GetParams().back().empty()); }
+};
+
+template <char Sep, bool SendEmpty>
+class Numeric::Builder : public GenericBuilder<Sep, SendEmpty, WriteNumericSink>
+{
+ public:
+	Builder(LocalUser* user, unsigned int num, bool addparam = true, size_t additionalsize = 0)
+		: ::Numeric::GenericBuilder<Sep, SendEmpty, WriteNumericSink>(WriteNumericSink(user), num, addparam, additionalsize + user->nick.size())
+	{
+	}
+};
+
+template <unsigned int NumStaticParams, bool SendEmpty, typename Sink>
+class Numeric::GenericParamBuilder
+{
+	Sink sink;
+	Numeric numeric;
+	std::string::size_type currlen;
+	std::string::size_type max;
+
+	bool HasRoom(const std::string::size_type additional) const
+	{
+		return (currlen + additional <= max);
+	}
+
+ public:
+	GenericParamBuilder(Sink s, unsigned int num, size_t additionalsize)
+		: sink(s)
+		, numeric(num)
+		, currlen(0)
+		, max(ServerInstance->Config->Limits.MaxLine - ServerInstance->Config->ServerName.size() - additionalsize - 10)
+	{
+	}
+
+	void AddStatic(const std::string& entry)
+	{
+		max -= (entry.length() + 1);
+		numeric.GetParams().push_back(entry);
+	}
+
+	void Add(const std::string& entry)
+	{
+		if (!HasRoom(entry.size()))
+			Flush();
+
+		currlen += entry.size() + 1;
+		numeric.GetParams().push_back(entry);
+	}
+
+	void Flush()
+	{
+		if ((!SendEmpty) && (IsEmpty()))
+			return;
+
+		sink(numeric);
+		currlen = 0;
+		numeric.GetParams().erase(numeric.GetParams().begin() + NumStaticParams, numeric.GetParams().end());
+	}
+
+	bool IsEmpty() const { return (numeric.GetParams().size() <= NumStaticParams); }
+};
+
+template <unsigned int NumStaticParams, bool SendEmpty>
+class Numeric::ParamBuilder : public GenericParamBuilder<NumStaticParams, SendEmpty, WriteNumericSink>
+{
+ public:
+	ParamBuilder(LocalUser* user, unsigned int num)
+		: ::Numeric::GenericParamBuilder<NumStaticParams, SendEmpty, WriteNumericSink>(WriteNumericSink(user), num, user->nick.size())
+	{
+	}
+};