--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/relpipe/xmlwriter/RelpipeXMLWriterException.h	Sat Jan 05 20:05:32 2019 +0100
@@ -0,0 +1,42 @@
+/**
+ * Relational pipes
+ * Copyright © 2018 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, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 <string>
+
+using namespace std;
+
+namespace relpipe {
+namespace xmlwriter {
+
+class RelpipeXMLWriterException {
+private:
+	wstring message;
+public:
+
+	RelpipeXMLWriterException(wstring message) : message(message) {
+	}
+
+	wstring getMessge() {
+		return message;
+	}
+
+};
+
+}
+}
\ No newline at end of file

--- a/include/relpipe/xmlwriter/XMLWriter.h	Sat Jan 05 19:03:47 2019 +0100
+++ b/include/relpipe/xmlwriter/XMLWriter.h	Sat Jan 05 20:05:32 2019 +0100
@@ -0,0 +1,72 @@
+/**
+ * Relational pipes
+ * Copyright © 2018 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, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 <iostream>
+#include <string>
+#include <vector>
+#include <codecvt>
+
+#include "RelpipeXMLWriterException.h"
+
+using namespace std;
+
+namespace relpipe {
+namespace xmlwriter {
+
+class XMLWriter {
+private:
+	std::ostream &output;
+
+public:
+
+	XMLWriter(std::ostream& output) : output(output) {
+	}
+
+	virtual ~XMLWriter() {
+		output.flush();
+	}
+
+	void writeStartElement(const wstring& name, const vector<wstring>& attributes) {
+		throw RelpipeXMLWriterException(L"not yet implemented");
+	}
+
+	void writeEndElement() {
+		throw RelpipeXMLWriterException(L"not yet implemented");
+	}
+
+	void writeEmptyElement(const wstring& name, const vector<wstring>& attributes) {
+		throw RelpipeXMLWriterException(L"not yet implemented");
+	}
+
+	void writeTextElement(const wstring& name, const vector<wstring>& attributes, const wstring& text) {
+		throw RelpipeXMLWriterException(L"not yet implemented");
+	}
+
+	void writeCharacters(const wstring& text) {
+		throw RelpipeXMLWriterException(L"not yet implemented");
+	}
+
+	void writeComment(const wstring& text) {
+		throw RelpipeXMLWriterException(L"not yet implemented");
+	}
+
+};
+
+}
+}
\ No newline at end of file