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Rebuild the regex documentation.

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[SVN r63768]
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Daniel James
2010-07-08 22:49:58 +00:00
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<head>
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Unicode and Boost.Regex</title>
<link rel="stylesheet" href="../../../../../doc/html/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.74.0">
<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.75.2">
<link rel="home" href="../index.html" title="Boost.Regex">
<link rel="up" href="../index.html" title="Boost.Regex">
<link rel="prev" href="introduction_and_overview.html" title="Introduction and Overview">
@ -20,9 +20,9 @@
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="introduction_and_overview.html"><img src="../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../index.html"><img src="../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="captures.html"><img src="../../../../../doc/html/images/next.png" alt="Next"></a>
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</div>
<div class="section" lang="en">
<div class="section">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="boost_regex.unicode"></a><a class="link" href="unicode.html" title="Unicode and Boost.Regex"> Unicode and Boost.Regex</a>
</h2></div></div></div>
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There are two ways to use Boost.Regex with Unicode strings:
</p>
<a name="boost_regex.unicode.rely_on_wchar_t"></a><h5>
<a name="id670360"></a>
<a name="id762743"></a>
<a class="link" href="unicode.html#boost_regex.unicode.rely_on_wchar_t">Rely on wchar_t</a>
</h5>
<p>
@ -40,23 +40,23 @@
<code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">iswlower</span></code> etc), then you can use <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">wregex</span></code>
to process Unicode. However, there are several disadvantages to this approach:
</p>
<div class="itemizedlist"><ul type="disc">
<li>
It's not portable: there's no guarantee on the width of <code class="computeroutput"><span class="keyword">wchar_t</span></code>,
or even whether the runtime treats wide characters as Unicode at all, most
Windows compilers do so, but many Unix systems do not.
</li>
<li>
There's no support for Unicode-specific character classes: <code class="computeroutput"><span class="special">[[:</span><span class="identifier">Nd</span><span class="special">:]]</span></code>,
<code class="computeroutput"><span class="special">[[:</span><span class="identifier">Po</span><span class="special">:]]</span></code> etc.
</li>
<li>
You can only search strings that are encoded as sequences of wide characters,
it is not possible to search UTF-8, or even UTF-16 on many platforms.
</li>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
It's not portable: there's no guarantee on the width of <code class="computeroutput"><span class="keyword">wchar_t</span></code>,
or even whether the runtime treats wide characters as Unicode at all, most
Windows compilers do so, but many Unix systems do not.
</li>
<li class="listitem">
There's no support for Unicode-specific character classes: <code class="computeroutput"><span class="special">[[:</span><span class="identifier">Nd</span><span class="special">:]]</span></code>, <code class="computeroutput"><span class="special">[[:</span><span class="identifier">Po</span><span class="special">:]]</span></code>
etc.
</li>
<li class="listitem">
You can only search strings that are encoded as sequences of wide characters,
it is not possible to search UTF-8, or even UTF-16 on many platforms.
</li>
</ul></div>
<a name="boost_regex.unicode.use_a_unicode_aware_regular_expression_type_"></a><h5>
<a name="id672158"></a>
<a name="id762897"></a>
<a class="link" href="unicode.html#boost_regex.unicode.use_a_unicode_aware_regular_expression_type_">Use
a Unicode Aware Regular Expression Type.</a>
</h5>
@ -79,7 +79,7 @@
</tr></table>
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</html>