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2026-08-07 17:38:18 +09:00
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SDK/version_3/libs/neon-0.29.5/doc/ref/bufutil.xml
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<refentry id="refbufutil">
<refmeta>
<refentrytitle>ne_buffer_clear</refentrytitle>
<manvolnum>3</manvolnum>
</refmeta>
<refnamediv>
<refname id="ne_buffer_clear">ne_buffer_clear</refname>
<refname id="ne_buffer_grow">ne_buffer_grow</refname>
<refname id="ne_buffer_altered">ne_buffer_altered</refname>
<refpurpose>clear, grow, or mark as altered a string buffer</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis>
<funcsynopsisinfo>#include &lt;ne_string.h&gt;</funcsynopsisinfo>
<funcprototype>
<funcdef>void <function>ne_buffer_clear</function></funcdef>
<paramdef>ne_buffer *<parameter>buf</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>void <function>ne_buffer_altered</function></funcdef>
<paramdef>ne_buffer *<parameter>buf</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>void <function>ne_buffer_grow</function></funcdef>
<paramdef>ne_buffer *<parameter>buf</parameter></paramdef>
<paramdef>size_t <parameter>size</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>The <function>ne_buffer_clear</function> function sets
the string stored in <parameter>buf</parameter> to be the empty string
(<literal>""</literal>).</para>
<para>The <function>ne_buffer_altered</function> function must
be used after the string stored in the buffer
<parameter>buf</parameter> is modified by directly rather than using
<xref linkend="ne_buffer_append"/>, <xref linkend="ne_buffer_zappend"/>
or <xref linkend="ne_buffer_concat"/>.</para>
<para>The <function>ne_buffer_grow</function> function
ensures that at least <parameter>size</parameter> bytes are allocated
for the string; this can be used if a large amount of data is going to
be appended to the buffer and may result in more efficient memory
allocation.</para>
</refsect1>
</refentry>