--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/CLIParser.h	Sat Apr 23 11:52:41 2022 +0200
@@ -0,0 +1,66 @@
+/**
+ * Relational pipes
+ * Copyright © 2022 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 <iostream>
+
+#include <relpipe/common/type/typedefs.h>
+#include <relpipe/cli/CLI.h>
+#include <relpipe/cli/RelpipeCLIException.h>
+
+#include "Configuration.h"
+
+namespace relpipe {
+namespace out {
+namespace nullbyte {
+
+class CLIParser {
+private:
+
+	relpipe::common::type::StringX readNext(const std::vector<relpipe::common::type::StringX>& 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);
+	}
+
+public:
+
+	static const relpipe::common::type::StringX OPTION_NULL_BYTE_REPLACEMENT;
+
+	Configuration parse(const std::vector<relpipe::common::type::StringX>& arguments) {
+		Configuration c;
+
+		for (int i = 0; i < arguments.size();) {
+			relpipe::common::type::StringX option = readNext(arguments, i);
+
+			if (option == OPTION_NULL_BYTE_REPLACEMENT) {
+				c.nullByteReplacement = readNext(arguments, i);
+			} else throw relpipe::cli::RelpipeCLIException(L"Unsupported CLI option: " + option, relpipe::cli::CLI::EXIT_CODE_BAD_CLI_ARGUMENTS);
+		}
+
+		return c;
+	}
+
+	virtual ~CLIParser() {
+	}
+};
+
+const relpipe::common::type::StringX CLIParser::OPTION_NULL_BYTE_REPLACEMENT = L"--null-byte-replacement";
+
+}
+}
+}