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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Unicode</title>
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<tr><td colspan="5" class="shortcuts">
<a href="#raptor-section-unicode.synopsis" class="shortcut">Top</a>
                   | 
                  <a href="#raptor-section-unicode.description" class="shortcut">Description</a>
</td></tr>
</table>
<div class="refentry" title="Unicode">
<a name="raptor-section-unicode"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="raptor-section-unicode.top_of_page"></a>Unicode</span></h2>
<p>Unicode — Unicode and UTF-8 utility functions.</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv" title="Synopsis">
<a name="raptor-section-unicode.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">typedef             <a class="link" href="raptor-section-unicode.html#raptor-unichar" title="raptor_unichar">raptor_unichar</a>;
<span class="returnvalue">int</span>                 <a class="link" href="raptor-section-unicode.html#raptor-unicode-char-to-utf8" title="raptor_unicode_char_to_utf8 ()">raptor_unicode_char_to_utf8</a>         (<a class="link" href="raptor-section-unicode.html#raptor-unichar" title="raptor_unichar"><span class="returnvalue">raptor_unichar</span></a> c,
                                                         unsigned <span class="returnvalue">char</span> *output);
<span class="returnvalue">int</span>                 <a class="link" href="raptor-section-unicode.html#raptor-utf8-to-unicode-char" title="raptor_utf8_to_unicode_char ()">raptor_utf8_to_unicode_char</a>         (<a class="link" href="raptor-section-unicode.html#raptor-unichar" title="raptor_unichar"><span class="returnvalue">raptor_unichar</span></a> *output,
                                                         unsigned <span class="returnvalue">char</span> *input,
                                                         <span class="returnvalue">int</span> length);
<span class="returnvalue">int</span>                 <a class="link" href="raptor-section-unicode.html#raptor-unicode-is-xml11-namestartchar" title="raptor_unicode_is_xml11_namestartchar ()">raptor_unicode_is_xml11_namestartchar</a>
                                                        (<a class="link" href="raptor-section-unicode.html#raptor-unichar" title="raptor_unichar"><span class="returnvalue">raptor_unichar</span></a> c);
<span class="returnvalue">int</span>                 <a class="link" href="raptor-section-unicode.html#raptor-unicode-is-xml10-namestartchar" title="raptor_unicode_is_xml10_namestartchar ()">raptor_unicode_is_xml10_namestartchar</a>
                                                        (<a class="link" href="raptor-section-unicode.html#raptor-unichar" title="raptor_unichar"><span class="returnvalue">raptor_unichar</span></a> c);
<span class="returnvalue">int</span>                 <a class="link" href="raptor-section-unicode.html#raptor-unicode-is-xml11-namechar" title="raptor_unicode_is_xml11_namechar ()">raptor_unicode_is_xml11_namechar</a>    (<a class="link" href="raptor-section-unicode.html#raptor-unichar" title="raptor_unichar"><span class="returnvalue">raptor_unichar</span></a> c);
<span class="returnvalue">int</span>                 <a class="link" href="raptor-section-unicode.html#raptor-unicode-is-xml10-namechar" title="raptor_unicode_is_xml10_namechar ()">raptor_unicode_is_xml10_namechar</a>    (<a class="link" href="raptor-section-unicode.html#raptor-unichar" title="raptor_unichar"><span class="returnvalue">raptor_unichar</span></a> c);
<span class="returnvalue">int</span>                 <a class="link" href="raptor-section-unicode.html#raptor-utf8-check" title="raptor_utf8_check ()">raptor_utf8_check</a>                   (unsigned <span class="returnvalue">char</span> *string,
                                                         <span class="returnvalue">size_t</span> length);
</pre>
</div>
<div class="refsect1" title="Description">
<a name="raptor-section-unicode.description"></a><h2>Description</h2>
<p>
Functions to support converting to and from Unicode written in UTF-8
which is the native internal string format of all the redland libraries.
Includes checking for Unicode names using either the XML 1.0 or XML 1.1
rules.
</p>
</div>
<div class="refsect1" title="Details">
<a name="raptor-section-unicode.details"></a><h2>Details</h2>
<div class="refsect2" title="raptor_unichar">
<a name="raptor-unichar"></a><h3>raptor_unichar</h3>
<pre class="programlisting">typedef unsigned long raptor_unichar;
</pre>
<p>
raptor Unicode codepoint</p>
</div>
<hr>
<div class="refsect2" title="raptor_unicode_char_to_utf8 ()">
<a name="raptor-unicode-char-to-utf8"></a><h3>raptor_unicode_char_to_utf8 ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 raptor_unicode_char_to_utf8         (<a class="link" href="raptor-section-unicode.html#raptor-unichar" title="raptor_unichar"><span class="returnvalue">raptor_unichar</span></a> c,
                                                         unsigned <span class="returnvalue">char</span> *output);</pre>
<p>
Convert a Unicode character to UTF-8 encoding.
</p>
<p>
Based on <a href="/usr/share/gtk-doc/html/redland/redland-unicode.html#librdf-unicode-char-to-utf8"><code class="function">librdf_unicode_char_to_utf8()</code></a> with no need to calculate
length since the encoded character is always copied into a buffer
with sufficient size.</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>c</code></em> :</span></p></td>
<td> Unicode character
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>output</code></em> :</span></p></td>
<td> UTF-8 string buffer or NULL
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> bytes encoded to output buffer or &lt;0 on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="raptor_utf8_to_unicode_char ()">
<a name="raptor-utf8-to-unicode-char"></a><h3>raptor_utf8_to_unicode_char ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 raptor_utf8_to_unicode_char         (<a class="link" href="raptor-section-unicode.html#raptor-unichar" title="raptor_unichar"><span class="returnvalue">raptor_unichar</span></a> *output,
                                                         unsigned <span class="returnvalue">char</span> *input,
                                                         <span class="returnvalue">int</span> length);</pre>
<p>
Convert an UTF-8 encoded buffer to a Unicode character.
</p>
<p>
If output is NULL, then will calculate the number of bytes that
will be used from the input buffer and not perform the conversion.</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>output</code></em> :</span></p></td>
<td> Pointer to the Unicode character or NULL
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>input</code></em> :</span></p></td>
<td> UTF-8 string buffer
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>length</code></em> :</span></p></td>
<td> buffer size
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> bytes used from input buffer or &lt;0 on failure: -1 input buffer too short or length error, -2 overlong UTF-8 sequence, -3 illegal code positions, -4 code out of range U+0000 to U+10FFFF.  In cases -2, -3 and -4 the coded character is stored in the output.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="raptor_unicode_is_xml11_namestartchar ()">
<a name="raptor-unicode-is-xml11-namestartchar"></a><h3>raptor_unicode_is_xml11_namestartchar ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 raptor_unicode_is_xml11_namestartchar
                                                        (<a class="link" href="raptor-section-unicode.html#raptor-unichar" title="raptor_unichar"><span class="returnvalue">raptor_unichar</span></a> c);</pre>
<p>
Check if Unicode character is legal to start an XML 1.1 Name
</p>
<p>
Namespaces in XML 1.1 REC 2004-02-04
  http://www.w3.org/TR/2004/REC-xml11-20040204/<span class="type">NT-NameStartChar</span>
updating
  Extensible Markup Language (XML) 1.1 REC 2004-02-04
  http://www.w3.org/TR/2004/REC-xml11-20040204/ sec 2.3, [4a]
excluding the ':'</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>c</code></em> :</span></p></td>
<td> Unicode character to check
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> non-0 if legal
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="raptor_unicode_is_xml10_namestartchar ()">
<a name="raptor-unicode-is-xml10-namestartchar"></a><h3>raptor_unicode_is_xml10_namestartchar ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 raptor_unicode_is_xml10_namestartchar
                                                        (<a class="link" href="raptor-section-unicode.html#raptor-unichar" title="raptor_unichar"><span class="returnvalue">raptor_unichar</span></a> c);</pre>
<p>
Check if Unicode character is legal to start an XML 1.0 Name
</p>
<p>
Namespaces in XML REC 1999-01-14
  http://www.w3.org/TR/1999/REC-xml-names-19990114/<span class="type">NT-NCName</span>
updating
  Extensible Markup Language (XML) 1.0 (Third Edition) REC 2004-02-04
  http://www.w3.org/TR/2004/REC-xml-20040204/
excluding the ':'</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>c</code></em> :</span></p></td>
<td> Unicode character to check
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> non-0 if legal
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="raptor_unicode_is_xml11_namechar ()">
<a name="raptor-unicode-is-xml11-namechar"></a><h3>raptor_unicode_is_xml11_namechar ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 raptor_unicode_is_xml11_namechar    (<a class="link" href="raptor-section-unicode.html#raptor-unichar" title="raptor_unichar"><span class="returnvalue">raptor_unichar</span></a> c);</pre>
<p>
Check if a Unicode codepoint is a legal to continue an XML 1.1 Name
</p>
<p>
Namespaces in XML 1.1 REC 2004-02-04
  http://www.w3.org/TR/2004/REC-xml11-20040204/
updating
  Extensible Markup Language (XML) 1.1 REC 2004-02-04
  http://www.w3.org/TR/2004/REC-xml11-20040204/ sec 2.3, [4a]
excluding the ':'</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>c</code></em> :</span></p></td>
<td> Unicode character
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> non-0 if legal
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="raptor_unicode_is_xml10_namechar ()">
<a name="raptor-unicode-is-xml10-namechar"></a><h3>raptor_unicode_is_xml10_namechar ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 raptor_unicode_is_xml10_namechar    (<a class="link" href="raptor-section-unicode.html#raptor-unichar" title="raptor_unichar"><span class="returnvalue">raptor_unichar</span></a> c);</pre>
<p>
Check if a Unicode codepoint is a legal to continue an XML 1.0 Name
</p>
<p>
Namespaces in XML REC 1999-01-14
  http://www.w3.org/TR/1999/REC-xml-names-19990114/<span class="type">NT-NCNameChar</span>
updating
  Extensible Markup Language (XML) 1.0 (Third Edition) REC 2004-02-04
  http://www.w3.org/TR/2004/REC-xml-20040204/
excluding the ':'</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>c</code></em> :</span></p></td>
<td> Unicode character
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> non-0 if legal
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="raptor_utf8_check ()">
<a name="raptor-utf8-check"></a><h3>raptor_utf8_check ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 raptor_utf8_check                   (unsigned <span class="returnvalue">char</span> *string,
                                                         <span class="returnvalue">size_t</span> length);</pre>
<p>
Check a string is UTF-8.</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>string</code></em> :</span></p></td>
<td> UTF-8 string
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>length</code></em> :</span></p></td>
<td> length of string
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> Non 0 if the string is UTF-8
</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
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