filesystem.cc

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// -----------------------------------------------------------------------------
//
// Copyright (C) 2021 CERN & University of Surrey for the benefit of the
// BioDynaMo collaboration. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
//
// See the LICENSE file distributed with this work for details.
// See the NOTICE file distributed with this work for additional information
// regarding copyright ownership.
//
// -----------------------------------------------------------------------------
 
#include "core/util/filesystem.h"
#include <filesystem>
#include <string>
 
namespace bdm {
 
uint64_t RemoveDirectoryContents(const std::string& directory) {
  std::filesystem::path dir = directory;
  if (!std::filesystem::is_directory(dir) || std::filesystem::is_empty(dir)) {
    return 0;
  }
  auto files_removed = std::filesystem::remove_all(directory);
  std::filesystem::create_directory(directory);
  // subtract 1 because we don't count the removal of `directory`
  // itself.
  return files_removed - 1;
}
 
}  // namespace bdm