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<font size="7">Filesystem Deprecated Features</font>
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<h2><a name="Deprecated-names">Deprecated names</a> and features</h2>
<p style="font-size: 10pt">As the library evolves over time, names sometimes
change or old features are removed to make way for new features. To ease transition, Boost.Filesystem deprecates
the old names and features, but by default continues to provide many of them.
The deprecated names and other workarounds can be suppressed by defining macro <code>
BOOST_FILESYSTEM_NO_DEPRECATED</code>, and this is recommended for all new code.</p>
<p style="font-size: 10pt">In the table, &#10004; indicates a synonym or other
workaround is provided unless <code>
BOOST_FILESYSTEM_NO_DEPRECATED</code> is defined.</p>
<table border="1" cellpadding="5" cellspacing="1" style="border-collapse: collapse" bordercolor="#111111">
<tr>
<td style="font-size: 10pt" valign="top">
<b><i>Component or location</i></b></td>
<td style="font-size: 10pt" valign="top">
<p style="font-size: 10pt"><b><i>Old name, now deprecated</i></b></td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<p style="font-size: 10pt"><b><i>New name</i></b></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top"><code>class path</code></td>
<td style="font-size: 10pt" valign="top"><code>branch_path()</code></td>
<td style="font-size: 10pt" valign="top">&#10004;</td>
<td style="font-size: 10pt" valign="top"><code>parent_path()</code></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>class path</code></td>
<td style="font-size: 10pt" valign="top">
<code>canonize()</code></td>
<td style="font-size: 10pt" valign="top">
&nbsp;</td>
<td style="font-size: 10pt" valign="top">
<i>Function removed</i></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>class path</code></td>
<td style="font-size: 10pt" valign="top">
<code>default_name_check()</code></td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<i>Function removed</i></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>class path</code></td>
<td style="font-size: 10pt" valign="top">
<code>default_name_check(name_check)</code></td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<i>Function removed</i></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>class path</code></td>
<td style="font-size: 10pt" valign="top">
<code>default_name_check_writable()</code></td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<i>Function removed</i></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top"><code>class path</code></td>
<td style="font-size: 10pt" valign="top"><code>directory_string()</code></td>
<td style="font-size: 10pt" valign="top">&#10004;</td>
<td style="font-size: 10pt" valign="top"><code>string</code></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top"><code>class path</code></td>
<td style="font-size: 10pt" valign="top"><code>external_directory_string()</code></td>
<td style="font-size: 10pt" valign="top">&#10004;</td>
<td style="font-size: 10pt" valign="top"><code>native()</code></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top"><code>class path</code></td>
<td style="font-size: 10pt" valign="top"><code>external_file_string()</code></td>
<td style="font-size: 10pt" valign="top">&#10004;</td>
<td style="font-size: 10pt" valign="top"><code>native()</code></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top"><code>class path</code></td>
<td style="font-size: 10pt" valign="top"><code>file_string()</code></td>
<td style="font-size: 10pt" valign="top">&#10004;</td>
<td style="font-size: 10pt" valign="top"><code>string()</code></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top"><code>class path</code></td>
<td style="font-size: 10pt" valign="top"><code>has_branch_path()</code></td>
<td style="font-size: 10pt" valign="top">&#10004;</td>
<td style="font-size: 10pt" valign="top"><code>has_parent_path()</code></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top"><code>class path</code></td>
<td style="font-size: 10pt" valign="top"><code>has_leaf()</code></td>
<td style="font-size: 10pt" valign="top">&#10004;</td>
<td style="font-size: 10pt" valign="top"><code>has_filename()</code></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top"><code>class path</code></td>
<td style="font-size: 10pt" valign="top"><code>is_complete()</code></td>
<td style="font-size: 10pt" valign="top">&#10004;</td>
<td style="font-size: 10pt" valign="top"><code>is_absolute()</code></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top"><code>class path</code></td>
<td style="font-size: 10pt" valign="top"><code>leaf()</code></td>
<td style="font-size: 10pt" valign="top">&#10004;</td>
<td style="font-size: 10pt" valign="top"><code>filename()</code></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>class path</code></td>
<td style="font-size: 10pt" valign="top">
<code>native_directory_string()</code></td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<code>string()</code></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>class path</code></td>
<td style="font-size: 10pt" valign="top">
<code>native_file_string()</code></td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<code>string()</code></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>class path</code></td>
<td style="font-size: 10pt" valign="top">
<code>normalize()</code></td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<i>Function removed</i></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>class path</code></td>
<td style="font-size: 10pt" valign="top">
<code>path(const string_type&amp; str, name_check)</code></td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<i>Function removed. Workaround ignores </i><code>name_check</code><i>
argument.</i></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>class path</code></td>
<td style="font-size: 10pt" valign="top">
<code>path(const string_type::value_type* s,&nbsp; name_check)</code></td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<i>Function removed. Workaround ignores </i><code>name_check</code><i>
argument.</i></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>class path</code></td>
<td style="font-size: 10pt" valign="top">
<p style="font-size: 10pt"><code>remove_leaf()</code></td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<p style="font-size: 10pt"><code>remove_filename()</code></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>path.hpp</code></td>
<td style="font-size: 10pt" valign="top">
<code>template&lt;class String, class Traits&gt;<br>
&nbsp; class basic_path;</code></td>
<td style="font-size: 10pt" valign="top">
&nbsp;</td>
<td style="font-size: 10pt" valign="top">
Class template <code>basic_path</code> is replaced by class <code>path</code>.
No workaround for an explicitly coded <code>basic_path</code> is provided,
but see the next row - <code>path</code>.</td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>path.hpp</code></td>
<td style="font-size: 10pt" valign="top">
<code>typedef basic_path&lt;std::string, path_traits&gt; path</code></td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<code>class path</code></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>path.hpp</code></td>
<td style="font-size: 10pt" valign="top">
<code>typedef basic_path&lt;std::wstring, wpath_traits&gt; wpath</code></td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<i>Removed; use </i><code>class path</code><i> instead. Workaround provides
</i><code>typedef path wpath</code></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>operations.hpp</code></td>
<td style="font-size: 10pt" valign="top">
<code>initial_path()</code></td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<i>Function removed</i></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>operations.hpp</code></td>
<td style="font-size: 10pt" valign="top">
<p dir="ltr"><code>template &lt;class Path&gt;<br>
Path complete(const Path&amp; p,<br>
&nbsp;const Path&amp; base=<br>
&nbsp;&nbsp; initial_path&lt;Path&gt;())</code></td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<p dir="ltr"><code>path absolute(const path&amp; p, const path&amp; base=<br>
&nbsp; current_path())</code></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>operations.hpp</code></td>
<td style="font-size: 10pt" valign="top">
<code>is_regular(file_status f)</code></td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<p dir="ltr">
<code>is_regular_file(file_status f)</code></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>operations.hpp</code></td>
<td style="font-size: 10pt" valign="top">
<code>symbolic_link_exists(const path&amp; ph)</code></td>
<td style="font-size: 10pt" valign="top">
&nbsp;</td>
<td style="font-size: 10pt" valign="top">
<i>Function removed</i></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>operations.hpp</code></td>
<td style="font-size: 10pt" valign="top">
<code>copy_directory(const path&amp; from, const path&amp; to)</code></td>
<td style="font-size: 10pt" valign="top">
&nbsp;</td>
<td style="font-size: 10pt" valign="top">
<i>Function removed, use <code>create_directory(const path&amp; to, const path&amp; from)</code> instead (note the reversed order of arguments)</i></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>class directory_entry</code></td>
<td style="font-size: 10pt" valign="top">
<code>filename()</code></td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<i>Function removed, use </i><code>path().filename()</code><i> instead.</i></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>class directory_entry</code></td>
<td style="font-size: 10pt" valign="top">
<code>leaf()</code></td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<i>Function removed, use </i><code>path().filename()</code><i> instead.</i></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>class directory_entry</code></td>
<td style="font-size: 10pt" valign="top">
<code>string()</code></td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<i>Function removed, use </i><code>path().string()</code><i> instead.</i></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top"><code>class recursive_directory_iterator</code></td>
<td style="font-size: 10pt" valign="top"><code>level()</code></td>
<td style="font-size: 10pt" valign="top">&#10004;</td>
<td style="font-size: 10pt" valign="top"><code>depth()</code></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top"><code>class recursive_directory_iterator</code></td>
<td style="font-size: 10pt" valign="top"><code>no_push_pending()</code></td>
<td style="font-size: 10pt" valign="top">&#10004;</td>
<td style="font-size: 10pt" valign="top"><code>!recursion_pending()</code></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top"><code>class recursive_directory_iterator</code></td>
<td style="font-size: 10pt" valign="top"><code>no_push()</code></td>
<td style="font-size: 10pt" valign="top">&#10004;</td>
<td style="font-size: 10pt" valign="top"><code>disable_recursion_pending()</code></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top"><code>directory.hpp</code></td>
<td style="font-size: 10pt" valign="top"><code>enum class symlink_option</code></td>
<td style="font-size: 10pt" valign="top">&#10004;</td>
<td style="font-size: 10pt" valign="top"><i>Removed; use corresponding values of </i><code>enum class directory_options</code><i> instead.</i></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>directory.hpp</code></td>
<td style="font-size: 10pt" valign="top">
<code>wrecursive_directory_iterator</code> typedef</td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<i>Removed; use </i><code>class recursive_directory_iterator</code><i> instead. Workaround provides
</i><code>typedef recursive_directory_iterator wrecursive_directory_iterator</code></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>operations.hpp</code></td>
<td style="font-size: 10pt" valign="top">
The header provides <code>filesystem_error</code>, <code>file_status</code>, <code>directory_entry</code>, <code>directory_iterator</code>, <code>recursive_directory_iterator</code> and associated enums and functions.</td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<i>These components were moved to separate headers </i><code>exception.hpp</code><i>, </i><code>file_status.hpp</code><i> and </i><code>directory.hpp</code><i>.
The workaround is to include the new headers or </i><code>filesystem.hpp</code><i>. The new headers are still included by </i><code>operations.hpp</code><i> if
</i><code>BOOST_FILESYSTEM_NO_DEPRECATED</code><i> is not defined.</i></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
<code>string_file.hpp</code></td>
<td style="font-size: 10pt" valign="top">
The header provides utility functions for loading and saving a string to/from file.</td>
<td style="font-size: 10pt" valign="top">
&#10004;</td>
<td style="font-size: 10pt" valign="top">
<i>The header is deprecated, use a different implementation of these functions. Unavailable if </i><code>BOOST_FILESYSTEM_NO_DEPRECATED</code><i> is defined and will be permanently removed in a future release.</i></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
Macro definitions</td>
<td style="font-size: 10pt" valign="top">
<code>BOOST_WINDOW_API</code></td>
<td style="font-size: 10pt" valign="top">
&nbsp;</td>
<td style="font-size: 10pt" valign="top">
<i>No longer supported; API selection is always automatic.</i></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
Macro definitions</td>
<td style="font-size: 10pt" valign="top">
<code>BOOST_POSIX_API</code></td>
<td style="font-size: 10pt" valign="top">
&nbsp;</td>
<td style="font-size: 10pt" valign="top">
<i>No longer supported; API selection is always automatic.</i></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
Macro definitions</td>
<td style="font-size: 10pt" valign="top">
<code>BOOST_WINDOW_PATH</code></td>
<td style="font-size: 10pt" valign="top">
&nbsp;</td>
<td style="font-size: 10pt" valign="top">
<i>No longer supported; native path format selection is always automatic.</i></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
Macro definitions</td>
<td style="font-size: 10pt" valign="top">
<code>BOOST_POSIX_PATH</code></td>
<td style="font-size: 10pt" valign="top">
&nbsp;</td>
<td style="font-size: 10pt" valign="top">
<i>No longer supported; native path format selection is always automatic.</i></td>
</tr>
<tr>
<td style="font-size: 10pt" valign="top">
Build system</td>
<td style="font-size: 10pt" valign="top">
<code>Auto-linking on Windows</code></td>
<td style="font-size: 10pt" valign="top">
&nbsp;</td>
<td style="font-size: 10pt" valign="top">
<i>No longer supported. When users are linking against static library of Boost.Filesystem,
they are recommended to explicitly add Boost.Filesystem dependencies to their linker command
line. Shared library of Boost.Filesystem is not affected by this as it is already linked with
all its dependencies.</i></td>
</tr>
</table>
<h2>Deprecation rationale</h2>
<h3><code>initial_path</code> function</h3>
<p dir="ltr">Full implementation of <code>initial_path()</code> would require
support from the C++ runtime startup code, and that doesn't seem likely to
happen. Depending on the user to call <code>initial_path()</code> at the
beginning of <code>main()</code> is too error prone.&nbsp; An equivalent
function can trivially be provided by a user.</p>
<hr>
<p>&copy; Copyright Beman Dawes, 2002-2005, 2010</p>
<p>&copy; Copyright Andrey Semashev, 2019-2021</p>
<p> Use, modification, and distribution are subject to the Boost Software
License, Version 1.0. See <a href="http://www.boost.org/LICENSE_1_0.txt">
www.boost.org/LICENSE_1_0.txt</a></p>
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