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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 | <html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>gio.BufferedOutputStream</title><link rel="stylesheet" type="text/css" href="style.css"><meta name="generator" content="DocBook XSL Stylesheets V1.76.1"><link rel="home" href="index.html" title="PyGObject Reference Manual"><link rel="up" href="gio-class-reference.html" title="PyGio Class Reference"><link rel="prev" href="class-giobufferedinputstream.html" title="gio.BufferedInputStream"><link rel="next" href="class-giocancellable.html" title="gio.Cancellable"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">gio.BufferedOutputStream</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="class-giobufferedinputstream.html">Prev</a> </td><th width="60%" align="center">PyGio Class Reference</th><td width="20%" align="right"> <a accesskey="n" href="class-giocancellable.html">Next</a></td></tr></table><hr></div><div class="refentry" title="gio.BufferedOutputStream"><a name="class-giobufferedoutputstream"></a><div class="titlepage"></div><div class="refnamediv"><h2>gio.BufferedOutputStream</h2><p>gio.BufferedOutputStream — Buffered Output Stream</p></div><div class="refsect1" title="Synopsis"><a name="id470769"></a><h2>Synopsis</h2><table bgcolor="#D0E0F0" width="100%"><tr><td><pre class="classsynopsis">class <span class="ooclass"><span class="classname">gio.BufferedOutputStream</span></span>(<span class="ooclass"><span class="classname"><a class="link" href="class-giofilteroutputstream.html" title="gio.FilterOutputStream">gio.FilterOutputStream</a></span></span>):
<code class="constructorsynopsis"> <span class="methodname"><a class="link" href="class-giobufferedoutputstream.html#constructor-giobufferedoutputstream" title="Constructor">gio.BufferedOutputStream</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>base_stream</code></strong></span></span>)</code><br><code class="methodsynopsis"> def <span class="methodname"><a class="link" href="class-giobufferedoutputstream.html#method-giobufferedoutputstream--get-auto-grow" title="gio.BufferedOutputStream.get_auto_grow">get_auto_grow</a></span>(<span class="methodparam"></span>)</code><br><code class="methodsynopsis"> def <span class="methodname"><a class="link" href="class-giobufferedoutputstream.html#method-giobufferedoutputstream--get-buffer-size" title="gio.BufferedOutputStream.get_buffer_size">get_buffer_size</a></span>(<span class="methodparam"></span>)</code><br><code class="methodsynopsis"> def <span class="methodname"><a class="link" href="class-giobufferedoutputstream.html#method-giobufferedoutputstream--set-auto-grow" title="gio.BufferedOutputStream.set_auto_grow">set_auto_grow</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>auto_grow</code></strong></span></span>)</code><br><code class="methodsynopsis"> def <span class="methodname"><a class="link" href="class-giobufferedoutputstream.html#method-giobufferedoutputstream--set-buffer-size" title="gio.BufferedOutputStream.set_buffer_size">set_buffer_size</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>size</code></strong></span></span>)</code><br></pre></td></tr></table><pre class="programlisting">
<span class="bold"><strong>Functions</strong></span>
<code class="methodsynopsis"> def <span class="methodname"><a class="link" href="class-giobufferedoutputstream.html#function-gio--buffered-output-stream-new-sized" title="gio.buffered_output_stream_new_sized">gio.buffered_output_stream_new_sized</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>size</code></strong></span></span>)</code></pre></div><div class="refsect1" title="Ancestry"><a name="id435166"></a><h2>Ancestry</h2><pre class="synopsis">+-- <a class="link" href="class-gobject.html" title="gobject.GObject">gobject.GObject</a>
+-- <a class="link" href="class-giooutputstream.html" title="gio.OutputStream">gio.OutputStream</a>
+-- <a class="link" href="class-giofilteroutputstream.html" title="gio.FilterOutputStream">gio.FilterOutputStream</a>
+-- <a class="link" href="class-giobufferedoutputstream.html" title="gio.BufferedOutputStream">gio.BufferedOutputStream</a>
</pre></div><div class="refsect1" title="gio.BufferedOutputStream Properties"><a name="properties-giobufferedoutputstream"></a><h2>gio.BufferedOutputStream Properties</h2><div class="blockquote"><table width="100%" border="0" bgcolor="#E0E0E0"><tr><td valign="top"><div class="informaltable"><table width="100%" border="0"><colgroup><col width="1in"><col width="1in"><col width="4in"></colgroup><tbody><tr valign="top"><td valign="top">"auto-grow"</td><td valign="top">Read - Write</td><td valign="top">Whether the buffer should automatically grow. Default value: <code class="literal">False</code>.</td></tr><tr valign="top"><td valign="top">"buffer-size"</td><td valign="top">Read - Write - Construct</td><td valign="top">The size of the backend buffer. Allowed values: >= 1. Default value: 4096.</td></tr></tbody></table></div></td></tr></table></div></div><div class="refsect1" title="Description"><a name="id367442"></a><h2>Description</h2><p>
<a class="link" href="class-giobufferedoutputstream.html" title="gio.BufferedOutputStream"><code class="classname">gio.BufferedOutputStream</code></a>
implements <a class="link" href="class-giofilteroutputstream.html" title="gio.FilterOutputStream"><code class="classname">gio.FilterOutputStream</code></a>
and provides for buffered writes.
</p><p>
By default,
<a class="link" href="class-giobufferedoutputstream.html" title="gio.BufferedOutputStream"><code class="classname">gio.BufferedOutputStream</code></a>'s
buffer size is set at 4 kilobytes.
</p><p>
To create a buffered output stream, use
<code class="methodname"><a class="link" href="class-giobufferedoutputstream.html#constructor-giobufferedoutputstream" title="Constructor">gio.BufferedOutputStream</a></code>(),
or <code class="methodname"><a class="link" href="class-giobufferedoutputstream.html#function-gio--buffered-output-stream-new-sized" title="gio.buffered_output_stream_new_sized">gio.buffered_output_stream_new_sized</a></code>()
to specify the buffer's size at construction.
</p><p>
To get the size of a buffer within a buffered output stream, use
<code class="methodname"><a class="link" href="class-giobufferedoutputstream.html#method-giobufferedoutputstream--get-buffer-size" title="gio.BufferedOutputStream.get_buffer_size">gio.BufferedOutputStream.get_buffer_size</a></code>().
To change the size of a buffered output stream's buffer, use
<code class="methodname"><a class="link" href="class-giobufferedoutputstream.html#method-giobufferedoutputstream--set-buffer-size" title="gio.BufferedOutputStream.set_buffer_size">gio.BufferedOutputStream.set_buffer_size</a></code>().
Note that the buffer's size cannot be reduced below the size of the data within the buffer.
</p></div><div class="refsect1" title="Constructor"><a name="constructor-giobufferedoutputstream"></a><h2>Constructor</h2><pre class="programlisting"><code class="constructorsynopsis"> <span class="methodname">gio.BufferedOutputStream</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>base_stream</code></strong></span></span>)</code></pre><table border="0" width="100%" bgcolor="#FFECCE"><col align="left" valign="top" width="0*"><tbody><tr><td><p><span class="term"><em class="parameter"><code>base_stream</code></em> :</span></p></td><td>a
<a class="link" href="class-giooutputstream.html" title="gio.OutputStream"><code class="classname">gio.OutputStream</code></a>.
</td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>a new
<a class="link" href="class-giooutputstream.html" title="gio.OutputStream"><code class="classname">gio.OutputStream</code></a>
for the given base_stream.
</td></tr></tbody></table><p>
Creates a new buffered output stream for a base stream.
</p></div><div class="refsect1" title="Methods"><a name="id442713"></a><h2>Methods</h2><div class="refsect2" title="gio.BufferedOutputStream.get_auto_grow"><a name="method-giobufferedoutputstream--get-auto-grow"></a><h3>gio.BufferedOutputStream.get_auto_grow</h3><pre class="programlisting"><code class="methodsynopsis"> def <span class="methodname">get_auto_grow</span>(<span class="methodparam"></span>)</code></pre><table border="0" width="100%" bgcolor="#FFECCE"><col align="left" valign="top" width="0*"><tbody><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td><code class="literal">True</code> if the stream's
buffer automatically grows, <code class="literal">False</code> otherwise.
</td></tr></tbody></table><p>
The <code class="methodname">get_auto_grow</code>() method checks if the
buffer automatically grows as data is added.
</p></div><div class="refsect2" title="gio.BufferedOutputStream.get_buffer_size"><a name="method-giobufferedoutputstream--get-buffer-size"></a><h3>gio.BufferedOutputStream.get_buffer_size</h3><pre class="programlisting"><code class="methodsynopsis"> def <span class="methodname">get_buffer_size</span>(<span class="methodparam"></span>)</code></pre><table border="0" width="100%" bgcolor="#FFECCE"><col align="left" valign="top" width="0*"><tbody><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>the current buffer size.
</td></tr></tbody></table><p>
The <code class="methodname">get_buffer_size</code>() method gets the size
of the buffer in the stream.
</p></div><div class="refsect2" title="gio.BufferedOutputStream.set_auto_grow"><a name="method-giobufferedoutputstream--set-auto-grow"></a><h3>gio.BufferedOutputStream.set_auto_grow</h3><pre class="programlisting"><code class="methodsynopsis"> def <span class="methodname">set_auto_grow</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>auto_grow</code></strong></span></span>)</code></pre><table border="0" width="100%" bgcolor="#FFECCE"><col align="left" valign="top" width="0*"><tbody><tr><td><p><span class="term"><strong class="parameter"><code>auto_grow</code></strong> :</span></p></td><td>a boolean.
</td></tr></tbody></table><p>
The <code class="methodname">set_auto_grow</code>() method sets whether or not
the stream's buffer should automatically grow. If auto_grow is true,
then each write will just make the buffer larger, and you must manually
flush the buffer to actually write out the data to the underlying stream.
</p></div><div class="refsect2" title="gio.BufferedOutputStream.set_buffer_size"><a name="method-giobufferedoutputstream--set-buffer-size"></a><h3>gio.BufferedOutputStream.set_buffer_size</h3><pre class="programlisting"><code class="methodsynopsis"> def <span class="methodname">set_buffer_size</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>size</code></strong></span></span>)</code></pre><table border="0" width="100%" bgcolor="#FFECCE"><col align="left" valign="top" width="0*"><tbody><tr><td><p><span class="term"><strong class="parameter"><code>size</code></strong> :</span></p></td><td>the new buffer size.
</td></tr></tbody></table><p>
The <code class="methodname">set_buffer_size</code>() method sets the size of
the internal buffer to size.
</p></div></div><div class="refsect1" title="Functions"><a name="id416016"></a><h2>Functions</h2><div class="refsect2" title="gio.buffered_output_stream_new_sized"><a name="function-gio--buffered-output-stream-new-sized"></a><h3>gio.buffered_output_stream_new_sized</h3><pre class="programlisting"><code class="methodsynopsis"> def <span class="methodname">buffered_output_stream_new_sized</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>size</code></strong></span></span>)</code></pre><table border="0" width="100%" bgcolor="#FFECCE"><col align="left" valign="top" width="0*"><tbody><tr><td><p><span class="term"><em class="parameter"><code>size</code></em> :</span></p></td><td>the requested buffer size.
</td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>A new
<a class="link" href="class-giooutputstream.html" title="gio.OutputStream"><code class="classname">gio.OutputStream</code></a>
with an internal buffer set to size..
</td></tr></tbody></table><p>
The <code class="methodname">buffered_output_stream_new_sized</code>() function creates
a new <a class="link" href="class-giobufferedoutputstream.html" title="gio.BufferedOutputStream"><code class="classname">gio.BufferedOutputStream</code></a>
from the given base_stream, with a buffer set to size.
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