safe_filesystem_entry.hpp

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// -----------------------------------------------------------------------------------------------------
// Copyright (c) 2006-2020, Knut Reinert & Freie Universität Berlin
// Copyright (c) 2016-2020, Knut Reinert & MPI für molekulare Genetik
// This file may be used, modified and/or redistributed under the terms of the 3-clause BSD-License
// shipped with this file and also available at: https://github.com/seqan/seqan3/blob/master/LICENSE.md
// -----------------------------------------------------------------------------------------------------
 
#pragma once
 
#include <cassert>
#include <system_error>
 
#include <seqan3/core/platform.hpp>
#include <seqan3/std/filesystem>
 
namespace seqan3::detail
{
 
class safe_filesystem_entry
{
public:
    safe_filesystem_entry() = delete;                                             
    safe_filesystem_entry(safe_filesystem_entry const &) = delete;                
    safe_filesystem_entry(safe_filesystem_entry &&) = default;                    
    safe_filesystem_entry & operator=(safe_filesystem_entry const &) = delete;    
    safe_filesystem_entry & operator=(safe_filesystem_entry &&) = default;        
 
    safe_filesystem_entry(std::filesystem::path p) : entry(std::move(p))
    {}
 
    ~safe_filesystem_entry()
    {
        std::error_code ec;
        std::filesystem::remove_all(entry, ec);
 
        assert(!static_cast<bool>(ec));
    }
 
    bool remove()
    {
        return std::filesystem::remove(entry);
    }
 
    bool remove_no_throw() const noexcept
    {
        std::error_code ec;
        return std::filesystem::remove(entry, ec);
    }
 
    std::uintmax_t remove_all()
    {
        return std::filesystem::remove_all(entry);
    }
 
private:
 
    std::filesystem::path entry;
};
 
} // namespace seqan3::detail