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<title>Documenting code in Apache 2.4 - Apache HTTP Server Version 2.4</title>
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<p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p>
<p class="apache">Apache HTTP Server Version 2.4</p>
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<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="../">Version 2.4</a> > <a href="./">Developer Documentation</a></div><div id="page-content"><div id="preamble"><h1>Documenting code in Apache 2.4</h1>
<div class="toplang">
<p><span>Available Languages: </span><a href="../en/developer/documenting.html" title="English"> en </a> |
<a href="../zh-cn/developer/documenting.html" hreflang="zh-cn" rel="alternate" title="Simplified Chinese"> zh-cn </a></p>
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<p>Apache 2.4 uses <a href="http://www.doxygen.org/">Doxygen</a> to
document the APIs and global variables in the code. This will explain
the basics of how to document using Doxygen.</p>
</div>
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<div class="section">
<h2><a name="brief" id="brief">Brief Description</a></h2>
<p>To start a documentation block, use <code>/**</code><br />
To end a documentation block, use <code>*/</code></p>
<p>In the middle of the block, there are multiple tags we can
use:</p>
<div class="example"><p><code>
Description of this functions purpose<br />
@param parameter_name description<br />
@return description<br />
@deffunc signature of the function<br />
</code></p></div>
<p>The <code>deffunc</code> is not always necessary. DoxyGen does not
have a full parser in it, so any prototype that use a macro in the
return type declaration is too complex for scandoc. Those functions
require a <code>deffunc</code>. An example (using &gt; rather
than >):</p>
<div class="example"><p><code>
/**<br />
* return the final element of the pathname<br />
* @param pathname The path to get the final element of<br />
* @return the final element of the path<br />
* @tip Examples:<br />
* <pre><br />
* "/foo/bar/gum" -&gt; "gum"<br />
* "/foo/bar/gum/" -&gt; ""<br />
* "gum" -&gt; "gum"<br />
* "wi\\n32\\stuff" -&gt; "stuff"<br />
* </pre><br />
* @deffunc const char * ap_filename_of_pathname(const char *pathname)<br />
*/
</code></p></div>
<p>At the top of the header file, always include:</p>
<div class="example"><p><code>
/**<br />
* @package Name of library header<br />
*/
</code></p></div>
<p>Doxygen uses a new HTML file for each package. The HTML files are named
{Name_of_library_header}.html, so try to be concise with your names.</p>
<p>For a further discussion of the possibilities please refer to
<a href="http://www.doxygen.org/">the Doxygen site</a>.</p>
</div></div>
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</div><div class="top"><a href="#page-header"><img src="../images/up.gif" alt="top" /></a></div><div class="section"><h2><a id="comments_section" name="comments_section">Comments</a></h2><div class="warning"><strong>Notice:</strong><br />This is not a Q&A section. Comments placed here should be pointed towards suggestions on improving the documentation or server, and may be removed again by our moderators if they are either implemented or considered invalid/off-topic. Questions on how to manage the Apache HTTP Server should be directed at either our IRC channel, #httpd, on Freenode, or sent to our <a href="http://httpd.apache.org/lists.html">mailing lists</a>.</div>
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