diff -r 000000000000 -r ea26b3359fed src/CLIParser.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/CLIParser.h	Sat Jan 16 16:36:39 2021 +0100
@@ -0,0 +1,149 @@
+/**
+ * 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>
+
+#include <relpipe/writer/typedefs.h>
+#include <relpipe/cli/CLI.h>
+#include <relpipe/cli/RelpipeCLIException.h>
+
+#include "Configuration.h"
+
+namespace relpipe {
+namespace in {
+namespace xmltable {
+
+class CLIParser {
+private:
+
+	string_t readNext(std::vector<string_t> arguments, int& i) {
+		if (i < arguments.size()) return arguments[i++];
+		else throw relpipe::cli::RelpipeCLIException(L"Missing CLI argument" + (i > 0 ? (L" after " + arguments[i - 1]) : L""), relpipe::cli::CLI::EXIT_CODE_BAD_CLI_ARGUMENTS);
+	}
+
+	/**
+	 * TODO: use a common method
+	 */
+	bool parseBoolean(const string_t& value) {
+		if (value == L"true") return true;
+		else if (value == L"false") return false;
+		else throw relpipe::cli::RelpipeCLIException(L"Unable to parse boolean value: " + value + L" (expecting true or false)", relpipe::cli::CLI::EXIT_CODE_BAD_CLI_ARGUMENTS);
+	}
+
+	void addRelation(Configuration& c, RelationConfiguration& currentRelation) {
+		if (currentRelation.relation.size()) {
+			c.relationConfigurations.push_back(currentRelation);
+			currentRelation = RelationConfiguration();
+		}
+	}
+
+	relpipe::writer::TypeId parseTypeId(const string_t& value) {
+		using t = relpipe::writer::TypeId;
+		if (value == L"string") return t::STRING;
+		else if (value == L"integer") return t::INTEGER;
+		else if (value == L"boolean") return t::BOOLEAN;
+		else throw relpipe::cli::RelpipeCLIException(L"Unable to parse TypeId: " + value, relpipe::cli::CLI::EXIT_CODE_BAD_CLI_ARGUMENTS);
+	}
+
+public:
+
+	static const string_t OPTION_NAMESPACE;
+	static const string_t OPTION_PARSER_OPTION;
+	static const string_t OPTION_RELATION;
+	static const string_t OPTION_NAME_IS_XPATH;
+	static const string_t OPTION_RECORDS;
+	static const string_t OPTION_ATTRIBUTE;
+	static const string_t OPTION_XINCLUDE;
+	static const string_t OPTION_MODE;
+	static const string_t OPTION_RAW_XML_NODELIST_WRAPPER;
+	static const string_t OPTION_RAW_XML_ATTRIBUTE_WRAPPER;
+
+	Configuration parse(const std::vector<string_t>& arguments) {
+		Configuration c;
+		RelationConfiguration currentRelation;
+
+		for (int i = 0; i < arguments.size();) {
+			string_t option = readNext(arguments, i);
+
+			if (option == OPTION_NAMESPACE) {
+				c.namespaceMappings.push_back(readNext(arguments, i));
+				c.namespaceMappings.push_back(readNext(arguments, i));
+			} else if (option == OPTION_PARSER_OPTION) {
+				c.parserOptions.push_back({readNext(arguments, i), readNext(arguments, i)});
+			} else if (option == OPTION_XINCLUDE) {
+				c.xinclude = parseBoolean(readNext(arguments, i));
+			} else if (option == OPTION_RELATION) {
+				addRelation(c, currentRelation); // previous relation
+				currentRelation.relation = readNext(arguments, i);
+			} else if (option == OPTION_NAME_IS_XPATH) {
+				currentRelation.nameIsXPath = true;
+			} else if (option == OPTION_RECORDS) {
+				currentRelation.xpath = readNext(arguments, i);
+			} else if (option == OPTION_ATTRIBUTE) {
+				AttributeRecipe attribute;
+				attribute.mode = currentRelation.mode;
+				attribute.rawXmlNodeListWrapper = currentRelation.rawXmlNodeListWrapper;
+				attribute.rawXmlAttributeWrapper = currentRelation.rawXmlAttributeWrapper;
+				attribute.name = readNext(arguments, i);
+				attribute.type = parseTypeId(readNext(arguments, i));
+				attribute.xpath = readNext(arguments, i);
+				currentRelation.attributes.push_back(attribute);
+			} else if (option == OPTION_MODE) {
+				string_t modeName = readNext(arguments, i);
+				Mode mode;
+				if (modeName == L"string") mode = Mode::STRING;
+				else if (modeName == L"boolean") mode = Mode::BOOLEAN;
+				else if (modeName == L"raw-xml") mode = Mode::RAW_XML;
+				else if (modeName == L"line-number") mode = Mode::LINE_NUMBER;
+				else if (modeName == L"xpath") mode = Mode::XPATH;
+				else throw relpipe::cli::RelpipeCLIException(L"Unsupported mode: " + modeName, relpipe::cli::CLI::EXIT_CODE_BAD_CLI_ARGUMENTS);
+				if (currentRelation.attributes.size()) currentRelation.attributes.back().mode = mode;
+				else currentRelation.mode = mode;
+			} else if (option == OPTION_RAW_XML_NODELIST_WRAPPER) {
+				XmlElementSkeleton w = {readNext(arguments, i), readNext(arguments, i), readNext(arguments, i)};
+				if (currentRelation.attributes.size()) currentRelation.attributes.back().rawXmlNodeListWrapper = w;
+				else currentRelation.rawXmlNodeListWrapper = w;
+			} else if (option == OPTION_RAW_XML_ATTRIBUTE_WRAPPER) {
+				XmlElementSkeleton w = {readNext(arguments, i), readNext(arguments, i), readNext(arguments, i)};
+				if (currentRelation.attributes.size()) currentRelation.attributes.back().rawXmlAttributeWrapper = w;
+				else currentRelation.rawXmlAttributeWrapper = w;
+			} else throw relpipe::cli::RelpipeCLIException(L"Unsupported CLI option: " + option, relpipe::cli::CLI::EXIT_CODE_BAD_CLI_ARGUMENTS);
+		}
+		addRelation(c, currentRelation); // last relation
+
+		return c;
+	}
+
+	virtual ~CLIParser() {
+	}
+};
+
+const string_t CLIParser::OPTION_NAMESPACE = L"--namespace";
+const string_t CLIParser::OPTION_PARSER_OPTION = L"--parser-option";
+const string_t CLIParser::OPTION_RELATION = L"--relation";
+const string_t CLIParser::OPTION_NAME_IS_XPATH = L"--name-is-xpath";
+const string_t CLIParser::OPTION_RECORDS = L"--records";
+const string_t CLIParser::OPTION_ATTRIBUTE = L"--attribute";
+const string_t CLIParser::OPTION_XINCLUDE = L"--xinclude";
+const string_t CLIParser::OPTION_MODE = L"--mode";
+const string_t CLIParser::OPTION_RAW_XML_NODELIST_WRAPPER = L"--raw-xml-nodelist-wrapper";
+const string_t CLIParser::OPTION_RAW_XML_ATTRIBUTE_WRAPPER = L"--raw-xml-attribute-wrapper";
+
+}
+}
+}