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<title>std::wbuffer_convert&lt;Codecvt,Elem,Tr&gt;::rdbuf</title>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::wbuffer_convert&lt;Codecvt,Elem,Tr&gt;::</span>rdbuf</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-locale.html">locale</a>&lrm; | <a href="cpp-locale-wbuffer_convert.html">wbuffer convert</a></span></div>
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<div>&#23450;&#20041;&#20110;&#22836;&#25991;&#20214; <code><a href="cpp-header-locale.html">&lt;locale&gt;</a></code></div>
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<div><span class="mw-geshi cpp source-cpp"><a href="cpp-io-basic_streambuf.html"><span class="kw1724">std::<span class="me2">streambuf</span></span></a><span class="sy2">*</span> rdbuf<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span></span></div>
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<div><span class="mw-geshi cpp source-cpp"><a href="cpp-io-basic_streambuf.html"><span class="kw1724">std::<span class="me2">streambuf</span></span></a><span class="sy2">*</span> rdbuf<span class="br0">(</span> <a href="cpp-io-basic_streambuf.html"><span class="kw1724">std::<span class="me2">streambuf</span></span></a><span class="sy2">*</span> bytebuf <span class="br0">)</span><span class="sy4">;</span></span></div>
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<p>1) &#36820;&#22238;&#25351;&#21521;&#24213;&#23618;&#23383;&#33410;&#27969;&#30340;&#25351;&#38024;&#12290;</p>
<p>2) &#20197; <code>bytebuf</code> &#26367;&#25442;&#20851;&#32852;&#23383;&#33410;&#27969;&#12290;</p>
<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">&#36820;&#22238;&#20540;</span></h3>
<p>1) &#24403;&#21069;&#30340;&#24213;&#23618;&#23383;&#33410;&#27969;</p>
<p>2) &#20808;&#21069;&#30340;&#23383;&#33410;&#27969;</p>
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">&#31034;&#20363;</span></h3>
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<pre class="de1"><span class="co2">#include &lt;iostream&gt;</span>
<span class="co2">#include &lt;sstream&gt;</span>
<span class="co2">#include &lt;locale&gt;</span>
<span class="co2">#include &lt;codecvt&gt;</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
<span class="br0">{</span>
<span class="co1">// &#36716;&#25442; UTF-8 &#21040; UCS4</span>
<a href="cpp-io-basic_stringbuf.html"><span class="kw1726">std::<span class="me2">stringbuf</span></span></a> utf8buf<span class="br0">(</span>u8<span class="st0">&quot;z<span class="es3">\u00df</span><span class="es3">\u6c34</span><span class="es4">\U0001d10b</span>&quot;</span><span class="br0">)</span><span class="sy4">;</span> <span class="co1">// &#25110; u8&quot;z&szlig;&#27700;&#119051;&quot;</span>
<span class="co1">// &#25110; &quot;\x7a\xc3\x9f\xe6\xb0\xb4\xf0\x9d\x84\x8b&quot;;</span>
<a href="cpp-locale-wbuffer_convert.html"><span class="kw1900">std::<span class="me2">wbuffer_convert</span></span></a><span class="sy1">&lt;</span><a href="cpp-locale-codecvt_utf8.html"><span class="kw1983">std::<span class="me2">codecvt_utf8</span></span></a><span class="sy1">&lt;</span><span class="kw4">wchar_t</span><span class="sy1">&gt;&gt;</span> conv<span class="br0">(</span><span class="sy3">&amp;</span>utf8buf<span class="br0">)</span><span class="sy4">;</span>
<a href="cpp-io-basic_istream.html"><span class="kw1741">std::<span class="me2">wistream</span></span></a> ucsbuf<span class="br0">(</span><span class="sy3">&amp;</span>conv<span class="br0">)</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;Reading from a UTF-8 stringbuf via wbuffer_convert:<span class="es1">\n</span>&quot;</span><span class="sy4">;</span>
<span class="kw1">for</span><span class="br0">(</span><span class="kw4">wchar_t</span> c<span class="sy4">;</span> ucsbuf.<span class="me1">get</span><span class="br0">(</span>c<span class="br0">)</span><span class="sy4">;</span> <span class="br0">)</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <a href="cpp-io-manip-hex.html"><span class="kw1782">std::<span class="me2">hex</span></span></a> <span class="sy1">&lt;&lt;</span> <a href="cpp-io-manip-showbase.html"><span class="kw1766">std::<span class="me2">showbase</span></span></a> <span class="sy1">&lt;&lt;</span> c <span class="sy1">&lt;&lt;</span> <span class="st0">&#39;<span class="es1">\n</span>&#39;</span><span class="sy4">;</span>
<span class="co1">// &#22797;&#29992;&#21516;&#19968; wbuffer_convert &#65292;&#20197;&#22788;&#29702; UCS4 &#21040; UTF-8 &#30340;&#36755;&#20986;</span>
conv.<span class="me1">rdbuf</span><span class="br0">(</span><a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a>.<span class="me1">rdbuf</span><span class="br0">(</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<a href="cpp-io-basic_ostream.html"><span class="kw1743">std::<span class="me2">wostream</span></span></a> out<span class="br0">(</span><span class="sy3">&amp;</span>conv<span class="br0">)</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;Sending UCS4 data to std::cout via wbuffer_convert:<span class="es1">\n</span>&quot;</span><span class="sy4">;</span>
out <span class="sy1">&lt;&lt;</span> L<span class="st0">&quot;z<span class="es3">\u00df</span><span class="es3">\u6c34</span><span class="es4">\U0001d10b</span><span class="es1">\n</span>&quot;</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
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<p>&#36755;&#20986;&#65306;</p>
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<pre class="de1">Reading from a UTF-8 stringbuf via wbuffer_convert:
0x7a
0xdf
0x6c34
0x1d10b
Sending UCS4 data to std::cout via wbuffer_convert:
z&szlig;&#27700;&#119051;</pre></div>
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<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">&#21442;&#38405;</span></h3>
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<div><a href="cpp-locale-wbuffer_convert-wbuffer_convert.html"><span class="t-lines"><span>(&#26500;&#36896;&#20989;&#25968;)</span></span></a></div>
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<td>&#26500;&#36896;&#26032;&#30340; wbuffer_convert<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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