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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>Database - Variant: liblangtag Documentation</title>
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<a href="#liblangtag-Database---Variant.description" class="shortcut">Description</a></span>
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<div class="refentry">
<a name="liblangtag-Database---Variant"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="liblangtag-Database---Variant.top_of_page"></a>Database - Variant</span></h2>
<p>Database - Variant — An interface to access Variant Database</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="liblangtag-Database---Variant.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_proto_type">
<col class="functions_proto_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a class="link" href="liblangtag-Database---Variant.html#lt-variant-db-t" title="lt_variant_db_t"><span class="returnvalue">lt_variant_db_t</span></a> *
</td>
<td class="function_name">
<a class="link" href="liblangtag-Database---Variant.html#lt-variant-db-new" title="lt_variant_db_new ()">lt_variant_db_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="liblangtag-Database---Variant.html#lt-variant-db-t" title="lt_variant_db_t"><span class="returnvalue">lt_variant_db_t</span></a> *
</td>
<td class="function_name">
<a class="link" href="liblangtag-Database---Variant.html#lt-variant-db-ref" title="lt_variant_db_ref ()">lt_variant_db_ref</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="liblangtag-Database---Variant.html#lt-variant-db-unref" title="lt_variant_db_unref ()">lt_variant_db_unref</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="liblangtag-Container---Variant.html#lt-variant-t" title="lt_variant_t"><span class="returnvalue">lt_variant_t</span></a> *
</td>
<td class="function_name">
<a class="link" href="liblangtag-Database---Variant.html#lt-variant-db-lookup" title="lt_variant_db_lookup ()">lt_variant_db_lookup</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="liblangtag-Database---Variant.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="other_proto_type">
<col class="other_proto_name">
</colgroup>
<tbody><tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="liblangtag-Database---Variant.html#lt-variant-db-t" title="lt_variant_db_t">lt_variant_db_t</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="liblangtag-Database---Variant.description"></a><h2>Description</h2>
<p>This class provides an interface to access Variant database. which has been
registered with IANA.</p>
</div>
<div class="refsect1">
<a name="liblangtag-Database---Variant.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="lt-variant-db-new"></a><h3>lt_variant_db_new ()</h3>
<pre class="programlisting"><a class="link" href="liblangtag-Database---Variant.html#lt-variant-db-t" title="lt_variant_db_t"><span class="returnvalue">lt_variant_db_t</span></a> *
lt_variant_db_new (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>Create a new instance of a <a class="link" href="liblangtag-Database---Variant.html#lt-variant-db-t" title="lt_variant_db_t"><span class="type">lt_variant_db_t</span></a>.</p>
<div class="refsect3">
<a name="lt-variant-db-new.returns"></a><h4>Returns</h4>
<p>a new instance of <a class="link" href="liblangtag-Database---Variant.html#lt-variant-db-t" title="lt_variant_db_t"><span class="type">lt_variant_db_t</span></a>. </p>
<p><span class="annotation">[<acronym title="The caller owns the data, and is responsible for free it."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="lt-variant-db-ref"></a><h3>lt_variant_db_ref ()</h3>
<pre class="programlisting"><a class="link" href="liblangtag-Database---Variant.html#lt-variant-db-t" title="lt_variant_db_t"><span class="returnvalue">lt_variant_db_t</span></a> *
lt_variant_db_ref (<em class="parameter"><code><a class="link" href="liblangtag-Database---Variant.html#lt-variant-db-t" title="lt_variant_db_t"><span class="type">lt_variant_db_t</span></a> *variantdb</code></em>);</pre>
<p>Increases the reference count of <em class="parameter"><code>variantdb</code></em>
.</p>
<div class="refsect3">
<a name="lt-variant-db-ref.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>variantdb</p></td>
<td class="parameter_description"><p>a <a class="link" href="liblangtag-Database---Variant.html#lt-variant-db-t" title="lt_variant_db_t"><span class="type">lt_variant_db_t</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="lt-variant-db-ref.returns"></a><h4>Returns</h4>
<p>the same <em class="parameter"><code>variantdb</code></em>
object. </p>
<p><span class="annotation">[<acronym title="The data is owned by the callee, which is responsible of freeing it."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="lt-variant-db-unref"></a><h3>lt_variant_db_unref ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
lt_variant_db_unref (<em class="parameter"><code><a class="link" href="liblangtag-Database---Variant.html#lt-variant-db-t" title="lt_variant_db_t"><span class="type">lt_variant_db_t</span></a> *variantdb</code></em>);</pre>
<p>Decreases the reference count of <em class="parameter"><code>variantdb</code></em>
. when its reference count
drops to 0, the object is finalized (i.e. its memory is freed).</p>
<div class="refsect3">
<a name="lt-variant-db-unref.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>variantdb</p></td>
<td class="parameter_description"><p>a <a class="link" href="liblangtag-Database---Variant.html#lt-variant-db-t" title="lt_variant_db_t"><span class="type">lt_variant_db_t</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="lt-variant-db-lookup"></a><h3>lt_variant_db_lookup ()</h3>
<pre class="programlisting"><a class="link" href="liblangtag-Container---Variant.html#lt-variant-t" title="lt_variant_t"><span class="returnvalue">lt_variant_t</span></a> *
lt_variant_db_lookup (<em class="parameter"><code><a class="link" href="liblangtag-Database---Variant.html#lt-variant-db-t" title="lt_variant_db_t"><span class="type">lt_variant_db_t</span></a> *variantdb</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *subtag</code></em>);</pre>
<p>Lookup <em class="parameter"><code>lt_variant_t</code></em>
if <em class="parameter"><code>subtag</code></em>
is valid and registered into the database.</p>
<div class="refsect3">
<a name="lt-variant-db-lookup.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>variantdb</p></td>
<td class="parameter_description"><p>a <a class="link" href="liblangtag-Database---Variant.html#lt-variant-db-t" title="lt_variant_db_t"><span class="type">lt_variant_db_t</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>subtag</p></td>
<td class="parameter_description"><p>a subtag name to lookup.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="lt-variant-db-lookup.returns"></a><h4>Returns</h4>
<p>a <a class="link" href="liblangtag-Container---Variant.html#lt-variant-t" title="lt_variant_t"><span class="type">lt_variant_t</span></a> that meets with <em class="parameter"><code>subtag</code></em>
.
otherwise <code class="literal">NULL</code>. </p>
<p><span class="annotation">[<acronym title="The caller owns the data, and is responsible for free it."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
</div>
<div class="refsect1">
<a name="liblangtag-Database---Variant.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="lt-variant-db-t"></a><h3>lt_variant_db_t</h3>
<pre class="programlisting">typedef struct _lt_variant_db_t lt_variant_db_t;</pre>
<p>All the fields in the <span class="structname">lt_variant_db_t</span>
structure are private to the <a class="link" href="liblangtag-Database---Variant.html#lt-variant-db-t" title="lt_variant_db_t"><span class="type">lt_variant_db_t</span></a> implementation.</p>
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