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<?xml version="1.0" standalone="no"?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
<refentry id="class-giomemoryoutputstream">
<refnamediv>
<refname>gio.MemoryOutputStream</refname>
<refpurpose>Streaming output operations on memory chunks</refpurpose>
</refnamediv>
<refsect1>
<title>Synopsis</title>
<classsynopsis language="python">
<ooclass><classname>gio.MemoryOutputStream</classname></ooclass>
<ooclass><classname><link linkend="class-giooutputstream">gio.OutputStream</link></classname></ooclass>
<constructorsynopsis language="python">
<methodname><link linkend="constructor-giomemoryoutputstream">gio.MemoryOutputStream</link></methodname>
<methodparam></methodparam>
</constructorsynopsis>
<methodsynopsis language="python">
<methodname><link linkend="method-giomemoryoutputstream--get-contents">get_contents</link></methodname>
<methodparam></methodparam>
</methodsynopsis>
<methodsynopsis language="python">
<methodname><link linkend="method-giomemoryoutputstream--get-data-size">get_data_size</link></methodname>
<methodparam></methodparam>
</methodsynopsis>
<methodsynopsis language="python">
<methodname><link linkend="method-giomemoryoutputstream--get-size">get_size</link></methodname>
<methodparam></methodparam>
</methodsynopsis>
</classsynopsis>
</refsect1>
<refsect1>
<title>Ancestry</title>
<synopsis>+-- <link linkend="class-gobject">gobject.GObject</link>
+-- <link linkend="class-giooutputstream">gio.OutputStream</link>
+-- <link linkend="class-giomemoryoutputstream">gio.MemoryOutputStream</link>
</synopsis>
</refsect1>
<refsect1>
<title>Implemented Interfaces</title>
<para>
<link linkend="class-giomemoryoutputstream"><classname>gio.MemoryOutputStream</classname></link>
implements
<link linkend="class-gioseekable"><classname>gio.Seekable</classname></link>
</para>
</refsect1>
<refsect1>
<title>Description</title>
<para>
<link linkend="class-giomemoryoutputstream"><classname>gio.MemoryOutputStream</classname></link>
is a class for using arbitrary memory chunks as output for GIO streaming output operations.
</para>
</refsect1>
<refsect1 id="constructor-giomemoryoutputstream">
<title>Constructor</title>
<programlisting><constructorsynopsis language="python">
<methodname>gio.MemoryOutputStream</methodname>
<methodparam></methodparam>
</constructorsynopsis></programlisting>
<variablelist>
<varlistentry>
<term><emphasis>Returns</emphasis> :</term>
<listitem><simpara>a new
<link linkend="class-giomemoryoutputstream"><classname>gio.MemoryOutputStream</classname></link>.
</simpara></listitem>
</varlistentry>
</variablelist>
<para>
Creates a new
<link linkend="class-giomemoryoutputstream"><classname>gio.MemoryOutputStream</classname></link>.
</para>
</refsect1>
<refsect1>
<title>Methods</title>
<refsect2 id="method-giomemoryoutputstream--get-contents">
<title>gio.MemoryOutputStream.get_contents</title>
<programlisting><methodsynopsis language="python">
<methodname>get_contents</methodname>
<methodparam></methodparam>
</methodsynopsis></programlisting>
<variablelist>
<varlistentry>
<term><emphasis>Returns</emphasis> :</term>
<listitem><simpara>the stream's data
</simpara></listitem>
</varlistentry>
</variablelist>
<para>
The <methodname>get_contents</methodname>() method gets any loaded data
from the ostream.
</para>
<para>
Note that the returned data may become invalid on the next write or truncate
operation on the stream.
</para>
</refsect2>
<refsect2 id="method-giomemoryoutputstream--get-data-size">
<title>gio.MemoryOutputStream.get_data_size</title>
<programlisting><methodsynopsis language="python">
<methodname>get_data_size</methodname>
<methodparam></methodparam>
</methodsynopsis></programlisting>
<variablelist>
<varlistentry>
<term><emphasis>Returns</emphasis> :</term>
<listitem><simpara>the number of bytes written to the stream
</simpara></listitem>
</varlistentry>
</variablelist>
<para>
The <methodname>get_data_size</methodname>() method returns the number
of bytes from the start up to including the last byte written in the
stream that has not been truncated away.
</para>
</refsect2>
<refsect2 id="method-giomemoryoutputstream--get-size">
<title>gio.MemoryOutputStream.get_size</title>
<programlisting><methodsynopsis language="python">
<methodname>get_size</methodname>
<methodparam></methodparam>
</methodsynopsis></programlisting>
<variablelist>
<varlistentry>
<term><emphasis>Returns</emphasis> :</term>
<listitem><simpara>the number of bytes allocated for the data buffer
</simpara></listitem>
</varlistentry>
</variablelist>
<para>
The <methodname>get_size</methodname>() method gets the size of the
currently allocated data area (availible from
<methodname><link linkend="method-giomemoryoutputstream--get-contents">gio.MemoryOutputStream.get_contents</link></methodname>()
).
</para>
<para>
Note that for growable streams the returned size may become invalid on the next write or truncate operation on the stream.
</para>
<para>
If you want the number of bytes currently written to the stream, use
<methodname><link linkend="method-giomemoryoutputstream--get-data-size">gio.MemoryOutputStream.get_data_size</link></methodname>().
</para>
</refsect2>
</refsect1>
</refentry>
|
