example.cpp

/* vim:set ts=2 sw=2 sts=2 et: */
/**
 * \author     Marcus Holland-Moritz (github@mhxnet.de)
 * \copyright  Copyright (c) Marcus Holland-Moritz
 *
 * This file is part of dwarfs.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the “Software”), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * SPDX-License-Identifier: MIT
 */

#include <filesystem>
#include <iostream>

#include <dwarfs/logger.h>
#include <dwarfs/os_access_generic.h>
#include <dwarfs/reader/filesystem_v2.h>
#include <dwarfs/reader/fsinfo_options.h>
#include <dwarfs/utility/filesystem_extractor.h>

int main(int argc, char** argv) {
  using namespace dwarfs;

  if (argc < 3) {
    std::cerr << "Usage: " << argv[0] << " info|extract <image>\n";
    return 1;
  }

  try {
    os_access_generic os;
    stream_logger lgr(os);

    reader::filesystem_v2 fs(lgr, os, argv[2]);

    if (std::string_view(argv[1]) == "info") {
      fs.dump(std::cout, {.features = reader::fsinfo_features::for_level(2)});
    } else if (std::string_view(argv[1]) == "extract") {
      utility::filesystem_extractor ex(lgr, os);
      ex.open_disk(std::filesystem::current_path());
      ex.extract(fs);
    } else {
      std::cerr << "Unknown command: " << argv[1] << "\n";
      return 1;
    }
  } catch (std::exception const& e) {
    std::cerr << "Error: " << e.what() << "\n";
    return 1;
  }

  return 0;
}