1 /**

     2  * Relational pipes

     3  * Copyright © 2021 František Kučera (Frantovo.cz, GlobalCode.info)

     4  *

     5  * This program is free software: you can redistribute it and/or modify

     6  * it under the terms of the GNU General Public License as published by

     7  * the Free Software Foundation, version 3 of the License.

     8  *

     9  * This program is distributed in the hope that it will be useful,

    10  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

    12  * GNU General Public License for more details.

    13  *

    14  * You should have received a copy of the GNU General Public License

    15  * along with this program. If not, see <http://www.gnu.org/licenses/>.

    16  */

    17 #pragma once

    18 

    19 #include <vector>

    20 #include <iostream>

    21 

    22 #include <relpipe/reader/typedefs.h>

    23 #include <relpipe/cli/CLI.h>

    24 #include <relpipe/cli/RelpipeCLIException.h>

    25 

    26 #include "Configuration.h"

    27 

    28 namespace relpipe {

    29 namespace out {

    30 namespace x11 {

    31 

    32 class CLIParser {

    33 private:

    34 

    35 	relpipe::reader::string_t readNext(const std::vector<relpipe::reader::string_t>& arguments, int& i) {

    36 		if (i < arguments.size()) return arguments[i++];

    37 		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);

    38 	}

    39 

    40 	/**

    41 	 * TODO: use a common method

    42 	 */

    43 	bool parseBoolean(const relpipe::reader::string_t& value) {

    44 		if (value == L"true") return true;

    45 		else if (value == L"false") return false;

    46 		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);

    47 	}

    48 

    49 public:

    50 

    51 	static const relpipe::reader::string_t OPTION_WRITE_HEADER;

    52 

    53 	Configuration parse(const std::vector<relpipe::reader::string_t>& arguments) {

    54 		Configuration c;

    55 

    56 		for (int i = 0; i < arguments.size();) {

    57 			relpipe::reader::string_t option = readNext(arguments, i);

    58 

    59 			if (option == OPTION_WRITE_HEADER) {

    60 				c.writeHeader = parseBoolean(readNext(arguments, i));

    61 			} else throw relpipe::cli::RelpipeCLIException(L"Unsupported CLI option: " + option, relpipe::cli::CLI::EXIT_CODE_BAD_CLI_ARGUMENTS);

    62 		}

    63 

    64 		return c;

    65 	}

    66 

    67 	virtual ~CLIParser() {

    68 	}

    69 };

    70 

    71 const relpipe::reader::string_t CLIParser::OPTION_WRITE_HEADER = L"--write-header";

    72 

    73 }

    74 }

    75 }