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<div class="title">wconversions.cpp</div>  </div>
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<p>Example of using various text conversion functions with wide strings.</p>
<div class="fragment"><div class="line"><span class="comment">//</span></div>
<div class="line"><span class="comment">//  Copyright (c) 2009-2011 Artyom Beilis (Tonkikh)</span></div>
<div class="line"><span class="comment">//</span></div>
<div class="line"><span class="comment">//  Distributed under the Boost Software License, Version 1.0. (See</span></div>
<div class="line"><span class="comment">//  accompanying file LICENSE_1_0.txt or copy at</span></div>
<div class="line"><span class="comment">//  http://www.boost.org/LICENSE_1_0.txt)</span></div>
<div class="line"><span class="comment">//</span></div>
<div class="line"></div>
<div class="line"><span class="comment">//</span></div>
<div class="line"><span class="comment">// ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !</span></div>
<div class="line"><span class="comment">//</span></div>
<div class="line"><span class="comment">// BIG FAT WARNING FOR Microsoft Visual Studio Users</span></div>
<div class="line"><span class="comment">//</span></div>
<div class="line"><span class="comment">// YOU NEED TO CONVERT THIS SOURCE FILE ENCODING TO UTF-8 WITH BOM ENCODING.</span></div>
<div class="line"><span class="comment">//</span></div>
<div class="line"><span class="comment">// Unfortunately MSVC understands that the source code is encoded as</span></div>
<div class="line"><span class="comment">// UTF-8 only if you add useless BOM in the beginning.</span></div>
<div class="line"><span class="comment">//</span></div>
<div class="line"><span class="comment">// So, before you compile &quot;wide&quot; examples with MSVC, please convert them to text</span></div>
<div class="line"><span class="comment">// files with BOM. There are two very simple ways to do it:</span></div>
<div class="line"><span class="comment">//</span></div>
<div class="line"><span class="comment">// 1. Open file with Notepad and save it from there. It would convert </span></div>
<div class="line"><span class="comment">//    it to file with BOM.</span></div>
<div class="line"><span class="comment">// 2. In Visual Studio go File-&gt;Advances Save Options... and select</span></div>
<div class="line"><span class="comment">//    Unicode (UTF-8  with signature) Codepage 65001</span></div>
<div class="line"><span class="comment">//</span></div>
<div class="line"><span class="comment">// Note: once converted to UTF-8 with BOM, this source code would not</span></div>
<div class="line"><span class="comment">// compile with other compilers, because no-one uses BOM with UTF-8 today</span></div>
<div class="line"><span class="comment">// because it is absolutely meaningless in context of UTF-8.</span></div>
<div class="line"><span class="comment">//</span></div>
<div class="line"><span class="comment">// ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !</span></div>
<div class="line"><span class="comment">//</span></div>
<div class="line"><span class="preprocessor">#include &lt;boost/locale.hpp&gt;</span></div>
<div class="line"><span class="preprocessor">#include &lt;boost/algorithm/string/case_conv.hpp&gt;</span></div>
<div class="line"><span class="preprocessor">#include &lt;iostream&gt;</span></div>
<div class="line"></div>
<div class="line"><span class="preprocessor">#include &lt;ctime&gt;</span></div>
<div class="line"></div>
<div class="line"></div>
<div class="line"><span class="keywordtype">int</span> main()</div>
<div class="line">{</div>
<div class="line">    <span class="keyword">using namespace </span>boost::locale;</div>
<div class="line">    <span class="keyword">using namespace </span>std;</div>
<div class="line">    <span class="comment">// Create system default locale</span></div>
<div class="line">    <a name="_a0"></a><a class="code" href="classboost_1_1locale_1_1generator.html">generator</a> gen;</div>
<div class="line">    locale loc=gen(<span class="stringliteral">&quot;&quot;</span>); </div>
<div class="line">    locale::global(loc);</div>
<div class="line">    wcout.imbue(loc);</div>
<div class="line"></div>
<div class="line">    <span class="comment">// This is needed to prevent C library to</span></div>
<div class="line">    <span class="comment">// convert strings to narrow </span></div>
<div class="line">    <span class="comment">// instead of C++ on some platforms</span></div>
<div class="line">    std::ios_base::sync_with_stdio(<span class="keyword">false</span>);</div>
<div class="line"></div>
<div class="line">    </div>
<div class="line">    wcout&lt;&lt;L<span class="stringliteral">&quot;Correct case conversion can&#39;t be done by simple, character by character conversion&quot;</span>&lt;&lt;endl;</div>
<div class="line">    wcout&lt;&lt;L<span class="stringliteral">&quot;because case conversion is context sensitive and not 1-to-1 conversion&quot;</span>&lt;&lt;endl;</div>
<div class="line">    wcout&lt;&lt;L<span class="stringliteral">&quot;For example:&quot;</span>&lt;&lt;endl;</div>
<div class="line">    wcout&lt;&lt;L<span class="stringliteral">&quot;   German grüßen correctly converted to &quot;</span>&lt;&lt;<a name="a1"></a><a class="code" href="group__convert.html#ga2ceae621801e8cf4f77c60d1e3047ae8">to_upper</a>(L<span class="stringliteral">&quot;grüßen&quot;</span>)&lt;&lt;L<span class="stringliteral">&quot;, instead of incorrect &quot;</span></div>
<div class="line">                    &lt;&lt;boost::to_upper_copy(std::wstring(L<span class="stringliteral">&quot;grüßen&quot;</span>))&lt;&lt;endl;</div>
<div class="line">    wcout&lt;&lt;L<span class="stringliteral">&quot;     where ß is replaced with SS&quot;</span>&lt;&lt;endl;</div>
<div class="line">    wcout&lt;&lt;L<span class="stringliteral">&quot;   Greek ὈΔΥΣΣΕΎΣ is correctly converted to &quot;</span>&lt;&lt;<a name="a2"></a><a class="code" href="group__convert.html#ga4a3eb15f42f5cbae7bdd00c9e9cac222">to_lower</a>(L<span class="stringliteral">&quot;ὈΔΥΣΣΕΎΣ&quot;</span>)&lt;&lt;L<span class="stringliteral">&quot;, instead of incorrect &quot;</span></div>
<div class="line">                    &lt;&lt;boost::to_lower_copy(std::wstring(L<span class="stringliteral">&quot;ὈΔΥΣΣΕΎΣ&quot;</span>))&lt;&lt;endl;</div>
<div class="line">    wcout&lt;&lt;L<span class="stringliteral">&quot;     where Σ is converted to σ or to ς, according to position in the word&quot;</span>&lt;&lt;endl;</div>
<div class="line">    wcout&lt;&lt;L<span class="stringliteral">&quot;Such type of conversion just can&#39;t be done using std::toupper that work on character base, also std::toupper is &quot;</span>&lt;&lt;endl;</div>
<div class="line">    wcout&lt;&lt;L<span class="stringliteral">&quot;not fully applicable when working with variable character length like in UTF-8 or UTF-16 limiting the correct &quot;</span>&lt;&lt;endl;</div>
<div class="line">    wcout&lt;&lt;L<span class="stringliteral">&quot;behavoir to BMP or ASCII only&quot;</span>&lt;&lt;endl;</div>
<div class="line">   </div>
<div class="line">}</div>
<div class="line"></div>
<div class="line"><span class="comment">// vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4</span></div>
<div class="line"></div>
<div class="line"><span class="comment">// boostinspect:noascii</span></div>
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