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<a href="#harfbuzz-hb-common.object-hierarchy" class="shortcut">Object Hierarchy</a></span>
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<h2><span class="refentrytitle"><a name="harfbuzz-hb-common.top_of_page"></a>hb-common</span></h2>
<p>hb-common</p>
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<td class="gallery_image" valign="top" align="right"></td>
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<div class="refsect1">
<a name="harfbuzz-hb-common.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="returnvalue">hb_tag_t</span></a>
</td>
<td class="function_name">
<a class="link" href="harfbuzz-hb-common.html#hb-tag-from-string" title="hb_tag_from_string ()">hb_tag_from_string</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="harfbuzz-hb-common.html#hb-tag-to-string" title="hb_tag_to_string ()">hb_tag_to_string</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t"><span class="returnvalue">hb_direction_t</span></a>
</td>
<td class="function_name">
<a class="link" href="harfbuzz-hb-common.html#hb-direction-from-string" title="hb_direction_from_string ()">hb_direction_from_string</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <span class="returnvalue">char</span> *
</td>
<td class="function_name">
<a class="link" href="harfbuzz-hb-common.html#hb-direction-to-string" title="hb_direction_to_string ()">hb_direction_to_string</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="returnvalue">hb_script_t</span></a>
</td>
<td class="function_name">
<a class="link" href="harfbuzz-hb-common.html#hb-script-from-iso15924-tag" title="hb_script_from_iso15924_tag ()">hb_script_from_iso15924_tag</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="returnvalue">hb_script_t</span></a>
</td>
<td class="function_name">
<a class="link" href="harfbuzz-hb-common.html#hb-script-from-string" title="hb_script_from_string ()">hb_script_from_string</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="returnvalue">hb_tag_t</span></a>
</td>
<td class="function_name">
<a class="link" href="harfbuzz-hb-common.html#hb-script-to-iso15924-tag" title="hb_script_to_iso15924_tag ()">hb_script_to_iso15924_tag</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t"><span class="returnvalue">hb_direction_t</span></a>
</td>
<td class="function_name">
<a class="link" href="harfbuzz-hb-common.html#hb-script-get-horizontal-direction" title="hb_script_get_horizontal_direction ()">hb_script_get_horizontal_direction</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="returnvalue">hb_language_t</span></a>
</td>
<td class="function_name">
<a class="link" href="harfbuzz-hb-common.html#hb-language-from-string" title="hb_language_from_string ()">hb_language_from_string</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <span class="returnvalue">char</span> *
</td>
<td class="function_name">
<a class="link" href="harfbuzz-hb-common.html#hb-language-to-string" title="hb_language_to_string ()">hb_language_to_string</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="returnvalue">hb_language_t</span></a>
</td>
<td class="function_name">
<a class="link" href="harfbuzz-hb-common.html#hb-language-get-default" title="hb_language_get_default ()">hb_language_get_default</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()">*hb_destroy_func_t</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="harfbuzz-hb-common.html#HB-TAG:CAPS" title="HB_TAG()">HB_TAG</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="harfbuzz-hb-common.html#HB-UNTAG:CAPS" title="HB_UNTAG()">HB_UNTAG</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="harfbuzz-hb-common.html#HB-DIRECTION-REVERSE:CAPS" title="HB_DIRECTION_REVERSE()">HB_DIRECTION_REVERSE</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="harfbuzz-hb-common.html#HB-DIRECTION-IS-BACKWARD:CAPS" title="HB_DIRECTION_IS_BACKWARD()">HB_DIRECTION_IS_BACKWARD</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="harfbuzz-hb-common.html#HB-DIRECTION-IS-FORWARD:CAPS" title="HB_DIRECTION_IS_FORWARD()">HB_DIRECTION_IS_FORWARD</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="harfbuzz-hb-common.html#HB-DIRECTION-IS-HORIZONTAL:CAPS" title="HB_DIRECTION_IS_HORIZONTAL()">HB_DIRECTION_IS_HORIZONTAL</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="harfbuzz-hb-common.html#HB-DIRECTION-IS-VALID:CAPS" title="HB_DIRECTION_IS_VALID()">HB_DIRECTION_IS_VALID</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="harfbuzz-hb-common.html#HB-DIRECTION-IS-VERTICAL:CAPS" title="HB_DIRECTION_IS_VERTICAL()">HB_DIRECTION_IS_VERTICAL</a><span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<a name="hb-user-data-key-t"></a><div class="refsect1">
<a name="harfbuzz-hb-common.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="typedef_keyword">typedef</td>
<td class="function_name"><a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t">hb_bool_t</a></td>
</tr>
<tr>
<td class="typedef_keyword">typedef</td>
<td class="function_name"><a class="link" href="harfbuzz-hb-common.html#hb-codepoint-t" title="hb_codepoint_t">hb_codepoint_t</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t">hb_direction_t</a></td>
</tr>
<tr>
<td class="typedef_keyword">typedef</td>
<td class="function_name"><a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t">hb_language_t</a></td>
</tr>
<tr>
<td class="typedef_keyword">typedef</td>
<td class="function_name"><a class="link" href="harfbuzz-hb-common.html#hb-mask-t" title="hb_mask_t">hb_mask_t</a></td>
</tr>
<tr>
<td class="typedef_keyword">typedef</td>
<td class="function_name"><a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t">hb_position_t</a></td>
</tr>
<tr>
<td class="typedef_keyword">typedef</td>
<td class="function_name"><a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t">hb_tag_t</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t">hb_script_t</a></td>
</tr>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="harfbuzz-hb-common.html#hb-user-data-key-t-struct" title="hb_user_data_key_t">hb_user_data_key_t</a></td>
</tr>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="harfbuzz-hb-common.html#hb-var-int-t" title="hb_var_int_t">hb_var_int_t</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="harfbuzz-hb-common.html#HB-TAG-NONE:CAPS" title="HB_TAG_NONE">HB_TAG_NONE</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="harfbuzz-hb-common.html#HB-TAG-MAX:CAPS" title="HB_TAG_MAX">HB_TAG_MAX</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="harfbuzz-hb-common.html#HB-TAG-MAX-SIGNED:CAPS" title="HB_TAG_MAX_SIGNED">HB_TAG_MAX_SIGNED</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="harfbuzz-hb-common.html#HB-LANGUAGE-INVALID:CAPS" title="HB_LANGUAGE_INVALID">HB_LANGUAGE_INVALID</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="harfbuzz-hb-common.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen"> <a href="/home/behdad/.local/share/gtk-doc/html/gobject/gobject-Boxed-Types.html">GBoxed</a>
<span class="lineart">╰──</span> hb_user_data_key_t
<a href="/home/behdad/.local/share/gtk-doc/html/gobject/gobject-Enumeration-and-Flag-Types.html">GEnum</a>
<span class="lineart">├──</span> hb_direction_t
<span class="lineart">╰──</span> hb_script_t
</pre>
</div>
<div class="refsect1">
<a name="harfbuzz-hb-common.description"></a><h2>Description</h2>
</div>
<div class="refsect1">
<a name="harfbuzz-hb-common.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="hb-tag-from-string"></a><h3>hb_tag_from_string ()</h3>
<pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="returnvalue">hb_tag_t</span></a>
hb_tag_from_string (<em class="parameter"><code>const <span class="type">char</span> *str</code></em>,
<em class="parameter"><code><span class="type">int</span> len</code></em>);</pre>
<div class="refsect3">
<a name="hb-tag-from-string.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>str</p></td>
<td class="parameter_description"><p>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> uint8_t]</span></td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="hb-tag-to-string"></a><h3>hb_tag_to_string ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
hb_tag_to_string (<em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a> tag</code></em>,
<em class="parameter"><code><span class="type">char</span> *buf</code></em>);</pre>
<div class="refsect3">
<a name="hb-tag-to-string.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>buf</p></td>
<td class="parameter_description"><p>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Out parameter, where caller must allocate storage."><span class="acronym">out caller-allocates</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> fixed-size=4][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> uint8_t]</span></td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-0-9-5.html#api-index-0.9.5">0.9.5</a></p>
</div>
<hr>
<div class="refsect2">
<a name="hb-direction-from-string"></a><h3>hb_direction_from_string ()</h3>
<pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t"><span class="returnvalue">hb_direction_t</span></a>
hb_direction_from_string (<em class="parameter"><code>const <span class="type">char</span> *str</code></em>,
<em class="parameter"><code><span class="type">int</span> len</code></em>);</pre>
<div class="refsect3">
<a name="hb-direction-from-string.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>str</p></td>
<td class="parameter_description"><p>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> uint8_t]</span></td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="hb-direction-to-string"></a><h3>hb_direction_to_string ()</h3>
<pre class="programlisting">const <span class="returnvalue">char</span> *
hb_direction_to_string (<em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t"><span class="type">hb_direction_t</span></a> direction</code></em>);</pre>
<div class="refsect3">
<a name="hb-direction-to-string.returns"></a><h4>Returns</h4>
<p>. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="hb-script-from-iso15924-tag"></a><h3>hb_script_from_iso15924_tag ()</h3>
<pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="returnvalue">hb_script_t</span></a>
hb_script_from_iso15924_tag (<em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a> tag</code></em>);</pre>
<p>Converts an ISO 15924 script tag to a corresponding <a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="type">hb_script_t</span></a>.</p>
<div class="refsect3">
<a name="hb-script-from-iso15924-tag.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>tag</p></td>
<td class="parameter_description"><p>an <a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a> representing an ISO 15924 tag.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="hb-script-from-iso15924-tag.returns"></a><h4>Returns</h4>
<p>An <a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="type">hb_script_t</span></a> corresponding to the ISO 15924 tag.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="hb-script-from-string"></a><h3>hb_script_from_string ()</h3>
<pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="returnvalue">hb_script_t</span></a>
hb_script_from_string (<em class="parameter"><code>const <span class="type">char</span> *str</code></em>,
<em class="parameter"><code><span class="type">int</span> len</code></em>);</pre>
<p>Converts a string <em class="parameter"><code>str</code></em>
representing an ISO 15924 script tag to a
corresponding <a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="type">hb_script_t</span></a>. Shorthand for <a class="link" href="harfbuzz-hb-common.html#hb-tag-from-string" title="hb_tag_from_string ()"><code class="function">hb_tag_from_string()</code></a> then
<a class="link" href="harfbuzz-hb-common.html#hb-script-from-iso15924-tag" title="hb_script_from_iso15924_tag ()"><code class="function">hb_script_from_iso15924_tag()</code></a>.</p>
<div class="refsect3">
<a name="hb-script-from-string.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>str</p></td>
<td class="parameter_description"><p>a string representing an
ISO 15924 tag. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> uint8_t]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>length of the <em class="parameter"><code>str</code></em>
, or -1 if it is <code class="literal">NULL</code>-terminated.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="hb-script-from-string.returns"></a><h4>Returns</h4>
<p>An <a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="type">hb_script_t</span></a> corresponding to the ISO 15924 tag.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="hb-script-to-iso15924-tag"></a><h3>hb_script_to_iso15924_tag ()</h3>
<pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="returnvalue">hb_tag_t</span></a>
hb_script_to_iso15924_tag (<em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="type">hb_script_t</span></a> script</code></em>);</pre>
<p>See <a class="link" href="harfbuzz-hb-common.html#hb-script-from-iso15924-tag" title="hb_script_from_iso15924_tag ()"><code class="function">hb_script_from_iso15924_tag()</code></a>.</p>
<div class="refsect3">
<a name="hb-script-to-iso15924-tag.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>script</p></td>
<td class="parameter_description"><p>an <span class="type">hb_script_</span> to convert.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="hb-script-to-iso15924-tag.returns"></a><h4>Returns</h4>
<p>An <a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a> representing an ISO 15924 script tag.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="hb-script-get-horizontal-direction"></a><h3>hb_script_get_horizontal_direction ()</h3>
<pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t"><span class="returnvalue">hb_direction_t</span></a>
hb_script_get_horizontal_direction (<em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="type">hb_script_t</span></a> script</code></em>);</pre>
<p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="hb-language-from-string"></a><h3>hb_language_from_string ()</h3>
<pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="returnvalue">hb_language_t</span></a>
hb_language_from_string (<em class="parameter"><code>const <span class="type">char</span> *str</code></em>,
<em class="parameter"><code><span class="type">int</span> len</code></em>);</pre>
<p>Converts <em class="parameter"><code>str</code></em>
representing an ISO 639 language code to the corresponding
<a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="type">hb_language_t</span></a>.</p>
<div class="refsect3">
<a name="hb-language-from-string.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>str</p></td>
<td class="parameter_description"><p>a string representing
ISO 639 language code. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> uint8_t]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>length of the <em class="parameter"><code>str</code></em>
, or -1 if it is <code class="literal">NULL</code>-terminated.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="hb-language-from-string.returns"></a><h4>Returns</h4>
<p>The <a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="type">hb_language_t</span></a> corresponding to the ISO 639 language code. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="hb-language-to-string"></a><h3>hb_language_to_string ()</h3>
<pre class="programlisting">const <span class="returnvalue">char</span> *
hb_language_to_string (<em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="type">hb_language_t</span></a> language</code></em>);</pre>
<p>See <a class="link" href="harfbuzz-hb-common.html#hb-language-from-string" title="hb_language_from_string ()"><code class="function">hb_language_from_string()</code></a>.</p>
<div class="refsect3">
<a name="hb-language-to-string.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>language</p></td>
<td class="parameter_description"><p>an <a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="type">hb_language_t</span></a> to convert.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="hb-language-to-string.returns"></a><h4>Returns</h4>
<p>A <code class="literal">NULL</code>-terminated string representing the <em class="parameter"><code>language</code></em>
. Must not be freed by
the caller. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="hb-language-get-default"></a><h3>hb_language_get_default ()</h3>
<pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="returnvalue">hb_language_t</span></a>
hb_language_get_default (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<div class="refsect3">
<a name="hb-language-get-default.returns"></a><h4>Returns</h4>
<p>. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="hb-destroy-func-t"></a><h3>hb_destroy_func_t ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
<span class="c_punctuation">(</span>*hb_destroy_func_t<span class="c_punctuation">)</span> (<em class="parameter"><code><span class="type">void</span> *user_data</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="HB-TAG:CAPS"></a><h3>HB_TAG()</h3>
<pre class="programlisting">#define HB_TAG(c1,c2,c3,c4) ((hb_tag_t)((((uint8_t)(c1))<<24)|(((uint8_t)(c2))<<16)|(((uint8_t)(c3))<<8)|((uint8_t)(c4))))
</pre>
</div>
<hr>
<div class="refsect2">
<a name="HB-UNTAG:CAPS"></a><h3>HB_UNTAG()</h3>
<pre class="programlisting">#define HB_UNTAG(tag) ((uint8_t)((tag)>>24)), ((uint8_t)((tag)>>16)), ((uint8_t)((tag)>>8)), ((uint8_t)(tag))
</pre>
</div>
<hr>
<div class="refsect2">
<a name="HB-DIRECTION-REVERSE:CAPS"></a><h3>HB_DIRECTION_REVERSE()</h3>
<pre class="programlisting">#define HB_DIRECTION_REVERSE(dir) ((hb_direction_t) (((unsigned int) (dir)) ^ 1))
</pre>
</div>
<hr>
<div class="refsect2">
<a name="HB-DIRECTION-IS-BACKWARD:CAPS"></a><h3>HB_DIRECTION_IS_BACKWARD()</h3>
<pre class="programlisting">#define HB_DIRECTION_IS_BACKWARD(dir) ((((unsigned int) (dir)) & ~2U) == 5)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="HB-DIRECTION-IS-FORWARD:CAPS"></a><h3>HB_DIRECTION_IS_FORWARD()</h3>
<pre class="programlisting">#define HB_DIRECTION_IS_FORWARD(dir) ((((unsigned int) (dir)) & ~2U) == 4)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="HB-DIRECTION-IS-HORIZONTAL:CAPS"></a><h3>HB_DIRECTION_IS_HORIZONTAL()</h3>
<pre class="programlisting">#define HB_DIRECTION_IS_HORIZONTAL(dir) ((((unsigned int) (dir)) & ~1U) == 4)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="HB-DIRECTION-IS-VALID:CAPS"></a><h3>HB_DIRECTION_IS_VALID()</h3>
<pre class="programlisting">#define HB_DIRECTION_IS_VALID(dir) ((((unsigned int) (dir)) & ~3U) == 4)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="HB-DIRECTION-IS-VERTICAL:CAPS"></a><h3>HB_DIRECTION_IS_VERTICAL()</h3>
<pre class="programlisting">#define HB_DIRECTION_IS_VERTICAL(dir) ((((unsigned int) (dir)) & ~1U) == 6)
</pre>
</div>
</div>
<div class="refsect1">
<a name="harfbuzz-hb-common.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="hb-bool-t"></a><h3>hb_bool_t</h3>
<pre class="programlisting">typedef int hb_bool_t;
</pre>
</div>
<hr>
<div class="refsect2">
<a name="hb-codepoint-t"></a><h3>hb_codepoint_t</h3>
<pre class="programlisting">typedef uint32_t hb_codepoint_t;
</pre>
</div>
<hr>
<div class="refsect2">
<a name="hb-direction-t"></a><h3>enum hb_direction_t</h3>
<div class="refsect3">
<a name="hb-direction-t.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="HB-DIRECTION-INVALID:CAPS"></a>HB_DIRECTION_INVALID</p></td>
<td class="enum_member_description">
<p>Initial, unset direction.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="HB-DIRECTION-LTR:CAPS"></a>HB_DIRECTION_LTR</p></td>
<td class="enum_member_description">
<p>Text is set horizontally from left to right.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="HB-DIRECTION-RTL:CAPS"></a>HB_DIRECTION_RTL</p></td>
<td class="enum_member_description">
<p>Text is set horizontally from right to left.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="HB-DIRECTION-TTB:CAPS"></a>HB_DIRECTION_TTB</p></td>
<td class="enum_member_description">
<p>Text is set vertically from top to bottom.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="HB-DIRECTION-BTT:CAPS"></a>HB_DIRECTION_BTT</p></td>
<td class="enum_member_description">
<p>Text is set vertically from bottom to top.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="hb-language-t"></a><h3>hb_language_t</h3>
<pre class="programlisting">typedef const struct hb_language_impl_t *hb_language_t;
</pre>
</div>
<hr>
<div class="refsect2">
<a name="hb-mask-t"></a><h3>hb_mask_t</h3>
<pre class="programlisting">typedef uint32_t hb_mask_t;
</pre>
</div>
<hr>
<div class="refsect2">
<a name="hb-position-t"></a><h3>hb_position_t</h3>
<pre class="programlisting">typedef int32_t hb_position_t;
</pre>
</div>
<hr>
<div class="refsect2">
<a name="hb-tag-t"></a><h3>hb_tag_t</h3>
<pre class="programlisting">typedef uint32_t hb_tag_t;
</pre>
</div>
<hr>
<div class="refsect2">
<a name="hb-script-t"></a><h3>enum hb_script_t</h3>
<div class="refsect3">
<a name="hb-script-t.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="HB-SCRIPT-BASSA-VAH:CAPS"></a>HB_SCRIPT_BASSA_VAH</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="HB-SCRIPT-ADLAM:CAPS"></a>HB_SCRIPT_ADLAM</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="HB-SCRIPT-MASARAM-GONDI:CAPS"></a>HB_SCRIPT_MASARAM_GONDI</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="HB-SCRIPT-INVALID:CAPS"></a>HB_SCRIPT_INVALID</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="HB-SCRIPT-MAX-VALUE:CAPS"></a>_HB_SCRIPT_MAX_VALUE</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="HB-SCRIPT-MAX-VALUE-SIGNED:CAPS"></a>_HB_SCRIPT_MAX_VALUE_SIGNED</p></td>
<td> </td>
<td> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="hb-user-data-key-t-struct"></a><h3>hb_user_data_key_t</h3>
<pre class="programlisting">typedef struct {
} hb_user_data_key_t;
</pre>
</div>
<hr>
<div class="refsect2">
<a name="hb-var-int-t"></a><h3>hb_var_int_t</h3>
</div>
<hr>
<div class="refsect2">
<a name="HB-TAG-NONE:CAPS"></a><h3>HB_TAG_NONE</h3>
<pre class="programlisting">#define HB_TAG_NONE HB_TAG(0,0,0,0)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="HB-TAG-MAX:CAPS"></a><h3>HB_TAG_MAX</h3>
<pre class="programlisting">#define HB_TAG_MAX HB_TAG(0xff,0xff,0xff,0xff)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="HB-TAG-MAX-SIGNED:CAPS"></a><h3>HB_TAG_MAX_SIGNED</h3>
<pre class="programlisting">#define HB_TAG_MAX_SIGNED HB_TAG(0x7f,0xff,0xff,0xff)
</pre>
</div>
<hr>
<div class="refsect2">
<a name="HB-LANGUAGE-INVALID:CAPS"></a><h3>HB_LANGUAGE_INVALID</h3>
<pre class="programlisting">#define HB_LANGUAGE_INVALID ((hb_language_t) 0)
</pre>
</div>
</div>
</div>
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