1 #pragma once

     2 

     3 #include <cstdlib>

     4 #include <iostream>

     5 #include <string>

     6 #include <vector>

     7 #include <algorithm>

     8 

     9 

    10 namespace relpipe {

    11 namespace in {

    12 namespace cli {

    13 

    14 class Command {

    15 public:

    16 	virtual ~Command() = default;

    17 

    18 	/**

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

    20 	 * 

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

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

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

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

    25 	 */

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

    27 

    28 };

    29 

    30 }

    31 }

    32 }