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+<title>Listing built-in functionality: Raptor RDF Syntax Library Manual</title>
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+<div class="chapter">
+<div class="titlepage"><div><div><h2 class="title">
+<a name="tutorial-querying-functionality"></a>Listing built-in functionality</h2></div></div></div>
+<p>
+Raptor can be configured and compiled with support for different
+lists of parsers and serializers. The list built into the
+library can be found by means of
+<span class="emphasis"><em>description</em></span> functions. These take as input an
+<code class="literal">int</code> counter and return descriptions of the object
+at that offset in the list. The return value is a pointer to a
+shared, read-only description of the object, or NULL if the counter
+has gone too far into the list.
+</p>
+<div class="variablelist">
+<p class="title"><b>Listing Functionality with Descriptions</b></p>
+<table border="0" class="variablelist">
+<colgroup>
+<col align="left" valign="top">
+<col>
+</colgroup>
+<tbody>
+<tr>
+<td><p><span class="term">Get descriptions of the parser syntaxes</span></p></td>
+<td><pre class="programlisting">
+ const raptor_syntax_description*
+ raptor_world_get_parser_description(raptor_world* world,
+ unsigned int counter);
+</pre></td>
+</tr>
+<tr>
+<td><p><span class="term">Get descriptions of the serializer syntaxes</span></p></td>
+<td><pre class="programlisting">
+ const raptor_syntax_description*
+ raptor_world_get_serializer_description(raptor_world* world,
+ unsigned int counter);
+</pre></td>
+</tr>
+<tr>
+<td><p><span class="term">Get descriptions of options</span></p></td>
+<td>
+<pre class="programlisting">
+ raptor_option_description*
+ raptor_world_get_option_description(raptor_world* world,
+ const raptor_domain domain,
+ const raptor_option option);
+</pre>
+<p>
+Call with the appropriate domains for the class such as
+<a class="link" href="raptor2-section-general.html#RAPTOR-DOMAIN-PARSER:CAPS"><code class="literal">RAPTOR_DOMAIN_PARSER</code></a>,
+<a class="link" href="raptor2-section-general.html#RAPTOR-DOMAIN-SERIALIZER:CAPS"><code class="literal">RAPTOR_DOMAIN_SERIALIZER</code></a>
+ etc. See the
+<a class="link" href="raptor2-section-general.html#raptor-domain" title="enum raptor_domain"><code class="literal">raptor_domain</code></a>
+description for the full list.
+</p>
+</td>
+</tr>
+</tbody>
+</table>
+</div>
+<p>These functions can be called directly after creating a
+raptor world object with
+<a class="link" href="raptor2-section-world.html#raptor-new-world" title="raptor_new_world"><code class="function">raptor_new_world()</code></a>.
+This is one way to find a parser (name) by it's MIME Type, the other
+is to use the mime_type parameter of the
+<a class="link" href="raptor2-section-parser.html#raptor-new-parser-for-content" title="raptor_new_parser_for_content ()"><code class="function">raptor_new_parser_for_content()</code></a>.</p>
+<div class="example">
+<a name="raptor-example-list-all-parser-options"></a><p class="title"><b>Example 1. List all parser options using option description</b></p>
+<div class="example-contents">
+<pre class="programlisting">
+ unsigned int i;
+ for(i = 0; i &lt; raptor_option_get_count(); i++) {
+ raptor_option_description* od;
+
+ od = raptor_world_get_option_description(world, RAPTOR_DOMAIN_PARSER, i);
+
+ if(od) {
+ /* do something with od fields such as od-&gt;name, od-&gt;label */
+ }
+ }
+</pre>
+<p>There are more examples of this usage in the source for the
+<code class="literal">rapper</code> utility in <code class="filename">util/rapper.c</code>.
+</p>
+</div>
+</div>
+<br class="example-break">
+</div>
+<div class="footer">
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