exiv2/samples/metacopy.hpp

// ***************************************************************** -*- C++ -*-
/*
 * Copyright (C) 2004-2021 Exiv2 authors
 * This program is part of the Exiv2 distribution.
 *
 * 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; either version 2
 * of the License, or (at your option) any later version.
 *
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA.
 */
#ifndef METACOPY_HPP_
#define METACOPY_HPP_

class Params : public Util::Getopt {
private:
    std::string optstring_;
    bool first_{true};

public:
    bool help_{false};             //!< Help option flag.
    bool iptc_{false};             //!< Iptc option flag.
    bool exif_{false};             //!< Exif option flag.
    bool comment_{false};          //!< JPEG comment option flag.
    bool xmp_{false};              //!< XMP option flag.
    bool preserve_{false};         //!< Preserve existing metadata option flag.
    std::string read_;             //!< Source file
    std::string write_;            //!< Destination file

public:
    /*!
      @brief Default constructor. Note that optstring_ is initialized here.
     */
    Params() : optstring_(":iecxaph")
    {
    }

    /*!
      @brief Call Getopt::getopt() with optstring, to initiate command line
             argument parsing, perform consistency checks after all command line
             arguments are parsed.

      @param argc Argument count as passed to main() on program invocation.
      @param argv Argument array as passed to main() on program invocation.

      @return 0 if successful, >0 in case of errors.
     */
    int getopt(int argc, char* const argv[]);

    //! Handle options and their arguments.
    virtual int option(int opt, const std::string& optarg, int optopt);

    //! Handle non-option parameters.
    virtual int nonoption(const std::string& argv);

    //! Print a minimal usage note to an output stream.
    void usage(std::ostream& os =std::cout) const;

    //! Print further usage explanations to an output stream.
    void help(std::ostream& os =std::cout) const;

}; // class Params

#endif // METACOPY_HPP_