<h2>Editing File: /usr/include/c++/8/experimental/bits/fs_dir.h</h2><form method='post'><textarea name='content' class='file-edit'>// Filesystem directory utilities -*- C++ -*-

// Copyright (C) 2014-2018 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library 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 3, or (at your option)
// any later version.

// This library 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.

// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.

// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
// &lt;http://www.gnu.org/licenses/&gt;.

/** @file experimental/bits/fs_dir.h
 *  This is an internal header file, included by other library headers.
 *  Do not attempt to use it directly. @headername{experimental/filesystem}
 */

#ifndef _GLIBCXX_EXPERIMENTAL_FS_DIR_H
#define _GLIBCXX_EXPERIMENTAL_FS_DIR_H 1

#if __cplusplus &lt; 201103L
# include &lt;bits/c++0x_warning.h&gt;
#else
# include &lt;typeinfo&gt;
# include &lt;ext/concurrence.h&gt;
# include &lt;bits/unique_ptr.h&gt;
# include &lt;bits/shared_ptr.h&gt;

namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

namespace experimental
{
namespace filesystem
{
inline namespace v1
{
  /**
   * @ingroup filesystem-ts
   * @{
   */

  class file_status
  {
  public:
    // constructors
    explicit
    file_status(file_type __ft = file_type::none,
	        perms __prms = perms::unknown) noexcept
    : _M_type(__ft), _M_perms(__prms) { }

    file_status(const file_status&amp;) noexcept = default;
    file_status(file_status&amp;&amp;) noexcept = default;
    ~file_status() = default;

    file_status&amp; operator=(const file_status&amp;) noexcept = default;
    file_status&amp; operator=(file_status&amp;&amp;) noexcept = default;

    // observers
    file_type  type() const noexcept { return _M_type; }
    perms      permissions() const noexcept { return _M_perms; }

    // modifiers
    void       type(file_type __ft) noexcept { _M_type = __ft; }
    void       permissions(perms __prms) noexcept { _M_perms = __prms; }

  private:
    file_type	_M_type;
    perms	_M_perms;
  };

_GLIBCXX_BEGIN_NAMESPACE_CXX11

  class directory_entry
  {
  public:
    // constructors and destructor
    directory_entry() noexcept = default;
    directory_entry(const directory_entry&amp;) = default;
    directory_entry(directory_entry&amp;&amp;) noexcept = default;
    explicit directory_entry(const filesystem::path&amp; __p) : _M_path(__p) { }
    ~directory_entry() = default;

    // modifiers
    directory_entry&amp; operator=(const directory_entry&amp;) = default;
    directory_entry&amp; operator=(directory_entry&amp;&amp;) noexcept = default;

    void assign(const filesystem::path&amp; __p) { _M_path = __p; }

    void
    replace_filename(const filesystem::path&amp; __p)
    { _M_path = _M_path.parent_path() / __p; }

    // observers
    const filesystem::path&amp;  path() const noexcept { return _M_path; }
    operator const filesystem::path&amp;() const noexcept { return _M_path; }

    file_status
    status() const
    { return filesystem::status(_M_path); }

    file_status
    status(error_code&amp; __ec) const noexcept
    { return filesystem::status(_M_path, __ec); }

    file_status
    symlink_status() const
    { return filesystem::symlink_status(_M_path); }

    file_status
    symlink_status(error_code&amp; __ec) const noexcept
    { return filesystem::symlink_status(_M_path, __ec); }

    bool
    operator&lt; (const directory_entry&amp; __rhs) const noexcept
    { return _M_path &lt; __rhs._M_path; }

    bool
    operator==(const directory_entry&amp; __rhs) const noexcept
    { return _M_path == __rhs._M_path; }

    bool
    operator!=(const directory_entry&amp; __rhs) const noexcept
    { return _M_path != __rhs._M_path; }

    bool
    operator&lt;=(const directory_entry&amp; __rhs) const noexcept
    { return _M_path &lt;= __rhs._M_path; }

    bool
    operator&gt; (const directory_entry&amp; __rhs) const noexcept
    { return _M_path &gt; __rhs._M_path; }

    bool
    operator&gt;=(const directory_entry&amp; __rhs) const noexcept
    { return _M_path &gt;= __rhs._M_path; }

  private:
    filesystem::path    _M_path;
  };

  struct _Dir;
  class directory_iterator;
  class recursive_directory_iterator;

  struct __directory_iterator_proxy
  {
    const directory_entry&amp; operator*() const&amp; noexcept { return _M_entry; }

    directory_entry operator*() &amp;&amp; noexcept { return std::move(_M_entry); }

  private:
    friend class directory_iterator;
    friend class recursive_directory_iterator;

    explicit
    __directory_iterator_proxy(const directory_entry&amp; __e) : _M_entry(__e) { }

    directory_entry _M_entry;
  };

  class directory_iterator
  {
  public:
    typedef directory_entry        value_type;
    typedef ptrdiff_t              difference_type;
    typedef const directory_entry* pointer;
    typedef const directory_entry&amp; reference;
    typedef input_iterator_tag     iterator_category;

    directory_iterator() = default;

    explicit
    directory_iterator(const path&amp; __p)
    : directory_iterator(__p, directory_options::none, nullptr) { }

    directory_iterator(const path&amp; __p, directory_options __options)
    : directory_iterator(__p, __options, nullptr) { }

    directory_iterator(const path&amp; __p, error_code&amp; __ec) noexcept
    : directory_iterator(__p, directory_options::none, __ec) { }

    directory_iterator(const path&amp; __p,
		       directory_options __options,
		       error_code&amp; __ec) noexcept
    : directory_iterator(__p, __options, &amp;__ec) { }

    directory_iterator(const directory_iterator&amp; __rhs) = default;

    directory_iterator(directory_iterator&amp;&amp; __rhs) noexcept = default;

    ~directory_iterator() = default;

    directory_iterator&amp;
    operator=(const directory_iterator&amp; __rhs) = default;

    directory_iterator&amp;
    operator=(directory_iterator&amp;&amp; __rhs) noexcept = default;

    const directory_entry&amp; operator*() const;
    const directory_entry* operator-&gt;() const { return &amp;**this; }
    directory_iterator&amp;    operator++();
    directory_iterator&amp;    increment(error_code&amp; __ec) noexcept;

    __directory_iterator_proxy operator++(int)
    {
      __directory_iterator_proxy __pr{**this};
      ++*this;
      return __pr;
    }

  private:
    directory_iterator(const path&amp;, directory_options, error_code*);

    friend bool
    operator==(const directory_iterator&amp; __lhs,
               const directory_iterator&amp; __rhs);

    friend class recursive_directory_iterator;

    std::shared_ptr&lt;_Dir&gt; _M_dir;
  };

  inline directory_iterator
  begin(directory_iterator __iter) noexcept
  { return __iter; }

  inline directory_iterator
  end(directory_iterator) noexcept
  { return directory_iterator(); }

  inline bool
  operator==(const directory_iterator&amp; __lhs, const directory_iterator&amp; __rhs)
  {
    return !__rhs._M_dir.owner_before(__lhs._M_dir)
      &amp;&amp; !__lhs._M_dir.owner_before(__rhs._M_dir);
  }

  inline bool
  operator!=(const directory_iterator&amp; __lhs, const directory_iterator&amp; __rhs)
  { return !(__lhs == __rhs); }

  class recursive_directory_iterator
  {
  public:
    typedef directory_entry        value_type;
    typedef ptrdiff_t              difference_type;
    typedef const directory_entry* pointer;
    typedef const directory_entry&amp; reference;
    typedef input_iterator_tag     iterator_category;

    recursive_directory_iterator() = default;

    explicit
    recursive_directory_iterator(const path&amp; __p)
    : recursive_directory_iterator(__p, directory_options::none, nullptr) { }

    recursive_directory_iterator(const path&amp; __p, directory_options __options)
    : recursive_directory_iterator(__p, __options, nullptr) { }

    recursive_directory_iterator(const path&amp; __p,
                                 directory_options __options,
                                 error_code&amp; __ec) noexcept
    : recursive_directory_iterator(__p, __options, &amp;__ec) { }

    recursive_directory_iterator(const path&amp; __p, error_code&amp; __ec) noexcept
    : recursive_directory_iterator(__p, directory_options::none, &amp;__ec) { }

    recursive_directory_iterator(
        const recursive_directory_iterator&amp;) = default;

    recursive_directory_iterator(recursive_directory_iterator&amp;&amp;) = default;

    ~recursive_directory_iterator();

    // observers
    directory_options  options() const { return _M_options; }
    int                depth() const;
    bool               recursion_pending() const { return _M_pending; }

    const directory_entry&amp; operator*() const;
    const directory_entry* operator-&gt;() const { return &amp;**this; }

    // modifiers
    recursive_directory_iterator&amp;
    operator=(const recursive_directory_iterator&amp; __rhs) noexcept;
    recursive_directory_iterator&amp;
    operator=(recursive_directory_iterator&amp;&amp; __rhs) noexcept;

    recursive_directory_iterator&amp; operator++();
    recursive_directory_iterator&amp; increment(error_code&amp; __ec) noexcept;

    __directory_iterator_proxy operator++(int)
    {
      __directory_iterator_proxy __pr{**this};
      ++*this;
      return __pr;
    }

    void pop();
    void pop(error_code&amp;);

    void disable_recursion_pending() { _M_pending = false; }

  private:
    recursive_directory_iterator(const path&amp;, directory_options, error_code*);

    friend bool
    operator==(const recursive_directory_iterator&amp; __lhs,
               const recursive_directory_iterator&amp; __rhs);

    struct _Dir_stack;
    std::shared_ptr&lt;_Dir_stack&gt; _M_dirs;
    directory_options _M_options = {};
    bool _M_pending = false;
  };

  inline recursive_directory_iterator
  begin(recursive_directory_iterator __iter) noexcept
  { return __iter; }

  inline recursive_directory_iterator
  end(recursive_directory_iterator) noexcept
  { return recursive_directory_iterator(); }

  inline bool
  operator==(const recursive_directory_iterator&amp; __lhs,
             const recursive_directory_iterator&amp; __rhs)
  {
    return !__rhs._M_dirs.owner_before(__lhs._M_dirs)
      &amp;&amp; !__lhs._M_dirs.owner_before(__rhs._M_dirs);
  }

  inline bool
  operator!=(const recursive_directory_iterator&amp; __lhs,
             const recursive_directory_iterator&amp; __rhs)
  { return !(__lhs == __rhs); }

_GLIBCXX_END_NAMESPACE_CXX11

  // @} group filesystem-ts
} // namespace v1
} // namespace filesystem
} // namespace experimental

_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std

#endif // C++11

#endif // _GLIBCXX_EXPERIMENTAL_FS_DIR_H
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