1 /**

     2  * Relational pipes

     3  * Copyright © 2018 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, either version 3 of the License, or

     8  * (at your option) any later version.

     9  *

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

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

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

    13  * GNU General Public License for more details.

    14  *

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

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

    17  */

    18 #pragma once

    19 

    20 #include <cstdlib>

    21 #include <iostream>

    22 #include <string>

    23 #include <vector>

    24 #include <algorithm>

    25 

    26 

    27 namespace relpipe {

    28 namespace in {

    29 namespace cli {

    30 

    31 class Command {

    32 public:

    33 	virtual ~Command() = default;

    34 

    35 	/**

    36 	 * Processes the inputs (stream + arguments) and generates output in the relational pipes format.

    37 	 * 

    38 	 * @param input usually STDIN, may not be used if all data are passed as CLI arguments

    39 	 * @param output usually STDOUT, relational data is passed here

    40 	 * @param command command name, usualy not needed, may be significant if the same Command instance is used for several commands

    41 	 * @param arguments CLI arguments containing data or parameters (format is specific to each command)

    42 	 */

    43 	virtual void process(std::istream& input, std::ostream& output, const relpipe::writer::string_t& command, const std::vector<relpipe::writer::string_t> &arguments) = 0;

    44 

    45 };

    46 

    47 }

    48 }

    49 }