/**
 * Relational pipes
 * Copyright © 2021 František Kučera (Frantovo.cz, GlobalCode.info)
 *
 * This program 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 3 of the License.
 *
 * 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

#include <vector>

namespace relpipe {
namespace in {
namespace asn1 {
namespace lib {

class XMLContentHandler {
public:

	virtual ~XMLContentHandler() = default;

	// FIXME: namespaces, check names

	virtual void writeStartElement(const std::string& name, const std::vector<std::string>& attributes = {}) = 0;
	virtual void writeEndElement() = 0;
	virtual void writeCharacters(const std::string& value) = 0;
	virtual void writeComment(const std::string& value, bool addSpaces = true) = 0;

};

class XMLContentHandlerProxy : XMLContentHandler {
private:
	std::vector<std::shared_ptr<XMLContentHandler>> handlers;
public:

	void addHandler(std::shared_ptr<XMLContentHandler> handler) {
		handlers.push_back(handler);
	}

#define handler for (auto ___h : handlers) ___h

	void writeStartElement(const std::string& name, const std::vector<std::string>& attributes = {}) override {
		handler->writeStartElement(name, attributes);
	}

	void writeEndElement() override {
		handler->writeEndElement();
	}

	void writeCharacters(const std::string& value) override {
		handler->writeCharacters(value);
	}

	void writeComment(const std::string& value, bool addSpaces = true) override {
		handler->writeComment(value, addSpaces);
	}

#undef handler

};

}
}
}
}