80 lines
4.7 KiB
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80 lines
4.7 KiB
HTML
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<title>basic_streambuf::prepare</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.75.2">
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
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<table cellpadding="2" width="100%"><tr><td valign="top"><img alt="asio C++ library" width="250" height="60" src="../../../asio.png"></td></tr></table>
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<hr>
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<div class="spirit-nav">
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<a accesskey="p" href="overflow.html"><img src="../../../prev.png" alt="Prev"></a><a accesskey="u" href="../basic_streambuf.html"><img src="../../../up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../home.png" alt="Home"></a><a accesskey="n" href="reserve.html"><img src="../../../next.png" alt="Next"></a>
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</div>
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<div class="section">
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<div class="titlepage"><div><div><h4 class="title">
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<a name="asio.reference.basic_streambuf.prepare"></a><a class="link" href="prepare.html" title="basic_streambuf::prepare">basic_streambuf::prepare</a>
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</h4></div></div></div>
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<p>
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<a class="indexterm" name="asio.indexterm.basic_streambuf.prepare"></a>
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Get a list
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of buffers that represents the output sequence, with the given size.
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</p>
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<pre class="programlisting"><span class="identifier">mutable_buffers_type</span> <span class="identifier">prepare</span><span class="special">(</span>
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<span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">n</span><span class="special">);</span>
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</pre>
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<p>
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Ensures that the output sequence can accommodate <code class="computeroutput"><span class="identifier">n</span></code>
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characters, reallocating character array objects as necessary.
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</p>
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<h6>
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<a name="asio.reference.basic_streambuf.prepare.h0"></a>
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<span><a name="asio.reference.basic_streambuf.prepare.return_value"></a></span><a class="link" href="prepare.html#asio.reference.basic_streambuf.prepare.return_value">Return Value</a>
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</h6>
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<p>
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An object of type <code class="computeroutput"><span class="identifier">mutable_buffers_type</span></code>
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that satisfies MutableBufferSequence requirements, representing character
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array objects at the start of the output sequence such that the sum of
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the buffer sizes is <code class="computeroutput"><span class="identifier">n</span></code>.
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</p>
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<h6>
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<a name="asio.reference.basic_streambuf.prepare.h1"></a>
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<span><a name="asio.reference.basic_streambuf.prepare.exceptions"></a></span><a class="link" href="prepare.html#asio.reference.basic_streambuf.prepare.exceptions">Exceptions</a>
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</h6>
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<div class="variablelist">
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<p class="title"><b></b></p>
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<dl>
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<dt><span class="term">std::length_error</span></dt>
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<dd><p>
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If <code class="computeroutput"><span class="identifier">size</span><span class="special">()</span>
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<span class="special">+</span> <span class="identifier">n</span>
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<span class="special">></span> <span class="identifier">max_size</span><span class="special">()</span></code>.
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</p></dd>
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</dl>
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</div>
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<h6>
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<a name="asio.reference.basic_streambuf.prepare.h2"></a>
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<span><a name="asio.reference.basic_streambuf.prepare.remarks"></a></span><a class="link" href="prepare.html#asio.reference.basic_streambuf.prepare.remarks">Remarks</a>
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</h6>
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<p>
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The returned object is invalidated by any <code class="computeroutput"><span class="identifier">basic_streambuf</span></code>
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member function that modifies the input sequence or output sequence.
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</p>
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</div>
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<div class="copyright-footer">Copyright © 2003-2023 Christopher M. Kohlhoff<p>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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</p>
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</div>
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<hr>
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<div class="spirit-nav">
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