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<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>gio.DataInputStream</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-giocancellable.html" title="gio.Cancellable"><link rel="next" href="class-giodataoutputstream.html" title="gio.DataOutputStream"></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.DataInputStream</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="class-giocancellable.html">Prev</a> </td><th width="60%" align="center">PyGio Class Reference</th><td width="20%" align="right"> <a accesskey="n" href="class-giodataoutputstream.html">Next</a></td></tr></table><hr></div><div class="refentry" title="gio.DataInputStream"><a name="class-giodatainputstream"></a><div class="titlepage"></div><div class="refnamediv"><h2>gio.DataInputStream</h2><p>gio.DataInputStream — Data Input Stream</p></div><div class="refsect1" title="Synopsis"><a name="id464053"></a><h2>Synopsis</h2><table bgcolor="#D0E0F0" width="100%"><tr><td><pre class="classsynopsis">class <span class="ooclass"><span class="classname">gio.DataInputStream</span></span>(<span class="ooclass"><span class="classname"><a class="link" href="class-giobufferedinputstream.html" title="gio.BufferedInputStream">gio.BufferedInputStream</a></span></span>):
<code class="constructorsynopsis">    <span class="methodname"><a class="link" href="class-giodatainputstream.html#constructor-giodatainputstream" title="Constructor">gio.DataInputStream</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-giodatainputstream.html#method-giodatainputstream--get-byte-order" title="gio.DataInputStream.get_byte_order">get_byte_order</a></span>(<span class="methodparam"></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--get-newline-type" title="gio.DataInputStream.get_newline_type">get_newline_type</a></span>(<span class="methodparam"></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--read-byte" title="gio.DataInputStream.read_byte">read_byte</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--read-int16" title="gio.DataInputStream.read_int16">read_int16</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--read-int32" title="gio.DataInputStream.read_int32">read_int32</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--read-int64" title="gio.DataInputStream.read_int64">read_int64</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--read-line" title="gio.DataInputStream.read_line">read_line</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--read-line-async" title="gio.DataInputStream.read_line_async">read_line_async</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>callback</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>io_priority</code></strong></span><span class="initializer">=glib.PRIORITY_DEFAULT</span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>user_data</code></strong></span><span class="initializer">=None</span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--read-line-finish" title="gio.DataInputStream.read_line_finish">read_line_finish</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>result</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--read-uint16" title="gio.DataInputStream.read_uint16">read_uint16</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--read-uint32" title="gio.DataInputStream.read_uint32">read_uint32</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--read-uint64" title="gio.DataInputStream.read_uint64">read_uint64</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--read-until" title="gio.DataInputStream.read_until">read_until</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>stop_chars</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--read-until-async" title="gio.DataInputStream.read_until_async">read_until_async</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>stop_chars</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>callback</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>io_priority</code></strong></span><span class="initializer">=glib.PRIORITY_DEFAULT</span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>user_data</code></strong></span><span class="initializer">=None</span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--read-until-finish" title="gio.DataInputStream.read_until_finish">read_until_finish</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>result</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--set-byte-order" title="gio.DataInputStream.set_byte_order">set_byte_order</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>order</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--set-newline-type" title="gio.DataInputStream.set_newline_type">set_newline_type</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>type</code></strong></span></span>)</code><br></pre></td></tr></table></div><div class="refsect1" title="Ancestry"><a name="id439747"></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-gioinputstream.html" title="gio.InputStream">gio.InputStream</a>
    +-- <a class="link" href="class-giofilterinputstream.html" title="gio.FilterInputStream">gio.FilterInputStream</a>
      +-- <a class="link" href="class-giobufferedinputstream.html" title="gio.BufferedInputStream">gio.BufferedInputStream</a>
        +-- <a class="link" href="class-giodatainputstream.html" title="gio.DataInputStream">gio.DataInputStream</a>
</pre></div><div class="refsect1" title="gio.DataInputStream Properties"><a name="properties-giodatainputstream"></a><h2>gio.DataInputStream 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">"byte-order"</td><td valign="top">Read - Write</td><td valign="top">The byte order. Default value: gio.DATA_STREAM_BYTE_ORDER_BIG_ENDIAN.</td></tr><tr valign="top"><td valign="top">"newline-type"</td><td valign="top">Read - Write</td><td valign="top">The accepted types of line ending. Default value: gio.DATA_STREAM_NEWLINE_TYPE_LF.</td></tr></tbody></table></div></td></tr></table></div></div><div class="refsect1" title="Description"><a name="id464009"></a><h2>Description</h2><p>
            <a class="link" href="class-giodatainputstream.html" title="gio.DataInputStream"><code class="classname">gio.DataInputStream</code></a>
            implements <a class="link" href="class-gioinputstream.html" title="gio.InputStream"><code class="classname">gio.InputStream</code></a>
            and includes functions for reading structured data directly from a binary input stream.
        </p></div><div class="refsect1" title="Constructor"><a name="constructor-giodatainputstream"></a><h2>Constructor</h2><pre class="programlisting"><code class="constructorsynopsis">    <span class="methodname">gio.DataInputStream</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-gioinputstream.html" title="gio.InputStream"><code class="classname">gio.InputStream</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-giodatainputstream.html" title="gio.DataInputStream"><code class="classname">gio.DataInputStream</code></a>
                </td></tr></tbody></table><p>
            Creates a new <a class="link" href="class-giodatainputstream.html" title="gio.DataInputStream"><code class="classname">gio.DataInputStream</code></a>
            from the given base_stream.
        </p></div><div class="refsect1" title="Methods"><a name="id433976"></a><h2>Methods</h2><div class="refsect2" title="gio.DataInputStream.get_byte_order"><a name="method-giodatainputstream--get-byte-order"></a><h3>gio.DataInputStream.get_byte_order</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">get_byte_order</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 stream's current
                    <a class="xref" href="gio-constants.html#gio-data-stream-byte-order-constants" title="Gio Data Stream Byte Order Constants">Gio Data Stream Byte Order Constants</a>.
                    </td></tr></tbody></table><p>
                The <code class="methodname">get_byte_order</code>() method gets the byte
                order for the data input stream.
            </p></div><div class="refsect2" title="gio.DataInputStream.get_newline_type"><a name="method-giodatainputstream--get-newline-type"></a><h3>gio.DataInputStream.get_newline_type</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">get_newline_type</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><a class="xref" href="gio-constants.html#gio-data-stream-newline-type-constants" title="Gio Data Stream Newline Type Constants">Gio Data Stream Newline Type Constants</a>
                    for the given stream.                    
                    </td></tr></tbody></table><p>
                The <code class="methodname">get_newline_type</code>() method gets the current
                newline type for the stream.
            </p></div><div class="refsect2" title="gio.DataInputStream.read_byte"><a name="method-giodatainputstream--read-byte"></a><h3>gio.DataInputStream.read_byte</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">read_byte</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</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>cancellable</code></strong> :</span></p></td><td>optional
                    <a class="link" href="class-giocancellable.html" title="gio.Cancellable"><code class="classname">gio.Cancellable</code></a>
                    object, <code class="literal">None</code> to ignore.
                  </td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>an unsigned 8-bit/1-byte value read from the
                    stream or 0 if an error occurred.
                    </td></tr></tbody></table><p>
                The <code class="methodname">read_byte</code>() method reads an unsigned 8-bit/1-byte value from stream.
            </p></div><div class="refsect2" title="gio.DataInputStream.read_int16"><a name="method-giodatainputstream--read-int16"></a><h3>gio.DataInputStream.read_int16</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">read_int16</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</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>cancellable</code></strong> :</span></p></td><td>optional
                    <a class="link" href="class-giocancellable.html" title="gio.Cancellable"><code class="classname">gio.Cancellable</code></a>
                    object, <code class="literal">None</code> to ignore.
                  </td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>a signed 16-bit/2-byte value read from stream or 0 if an error occurred.
                    </td></tr></tbody></table><p>
                The <code class="methodname">read_int16</code>() method reads a 16-bit/2-byte value from stream.
            </p><p>
                In order to get the correct byte order for this read operation, see
                <code class="methodname"><PYGTKDOCLINK HREF="method-giodatainputstream--get-byte_order">gio.DataInputStream.get_byte_order</PYGTKDOCLINK></code>()
                and
                <code class="methodname"><PYGTKDOCLINK HREF="method-giodatainputstream--set-byte_order">gio.DataInputStream.set_byte_order</PYGTKDOCLINK></code>().
            </p><p>
                If cancellable is not <code class="literal">None</code>, then the operation can be cancelled by
                triggering the cancellable object from another thread. If the operation was cancelled,
                the error gio.ERROR_CANCELLED will be returned.
            </p></div><div class="refsect2" title="gio.DataInputStream.read_int32"><a name="method-giodatainputstream--read-int32"></a><h3>gio.DataInputStream.read_int32</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">read_int32</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</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>cancellable</code></strong> :</span></p></td><td>optional
                    <a class="link" href="class-giocancellable.html" title="gio.Cancellable"><code class="classname">gio.Cancellable</code></a>
                    object, <code class="literal">None</code> to ignore.
                  </td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>a signed 32-bit/4-byte value read from the stream
                    or 0 if an error occurred.
                    </td></tr></tbody></table><p>
                The <code class="methodname">read_int32</code>() method reads a signed 32-bit/4-byte value from stream.
            </p><p>
                In order to get the correct byte order for this read operation, see
                <code class="methodname"><PYGTKDOCLINK HREF="method-giodatainputstream--get-byte_order">gio.DataInputStream.get_byte_order</PYGTKDOCLINK></code>()
                and
                <code class="methodname"><PYGTKDOCLINK HREF="method-giodatainputstream--set-byte_order">gio.DataInputStream.set_byte_order</PYGTKDOCLINK></code>().
            </p><p>
                If cancellable is not <code class="literal">None</code>, then the operation can be cancelled by
                triggering the cancellable object from another thread. If the operation was cancelled,
                the error gio.ERROR_CANCELLED will be returned.
            </p></div><div class="refsect2" title="gio.DataInputStream.read_int64"><a name="method-giodatainputstream--read-int64"></a><h3>gio.DataInputStream.read_int64</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">read_int64</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</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>cancellable</code></strong> :</span></p></td><td>optional
                    <a class="link" href="class-giocancellable.html" title="gio.Cancellable"><code class="classname">gio.Cancellable</code></a>
                    object, <code class="literal">None</code> to ignore.
                  </td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>a signed 64-bit/8-byte value read from the stream
                    or 0 if an error occurred.
                    </td></tr></tbody></table><p>
                The <code class="methodname">read_int64</code>() method reads a signed 64-bit/8-byte value from stream.
            </p><p>
                In order to get the correct byte order for this read operation, see
                <code class="methodname"><PYGTKDOCLINK HREF="method-giodatainputstream--get-byte_order">gio.DataInputStream.get_byte_order</PYGTKDOCLINK></code>()
                and
                <code class="methodname"><PYGTKDOCLINK HREF="method-giodatainputstream--set-byte_order">gio.DataInputStream.set_byte_order</PYGTKDOCLINK></code>().
            </p><p>
                If cancellable is not <code class="literal">None</code>, then the operation can be cancelled by
                triggering the cancellable object from another thread. If the operation was cancelled,
                the error gio.ERROR_CANCELLED will be returned.
            </p></div><div class="refsect2" title="gio.DataInputStream.read_line"><a name="method-giodatainputstream--read-line"></a><h3>gio.DataInputStream.read_line</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">read_line</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</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>cancellable</code></strong> :</span></p></td><td>optional
                    <a class="link" href="class-giocancellable.html" title="gio.Cancellable"><code class="classname">gio.Cancellable</code></a>
                    object, <code class="literal">None</code> to ignore.
                  </td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>a string with the line that was read in (without the newlines).
                    Set length to a gsize to get the length of the read line. On an error, it will return
                    <code class="literal">None</code> and error will be set. If there's no content to read, it
                    will still return <code class="literal">None</code>, but error won't be set.
                    </td></tr></tbody></table><p>
                The <code class="methodname">read_line</code>() reads a line from the data input stream.
            </p><p>
                If cancellable is not <code class="literal">None</code>, then the operation can
                be cancelled by triggering the cancellable object from another thread.
                If the operation was cancelled, the error gio.ERROR_CANCELLED will be
                returned. If an operation was partially finished when the operation was
                cancelled the partial result will be returned, without an error.
            </p></div><div class="refsect2" title="gio.DataInputStream.read_line_async"><a name="method-giodatainputstream--read-line-async"></a><h3>gio.DataInputStream.read_line_async</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">read_line_async</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>callback</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>io_priority</code></strong></span><span class="initializer">=glib.PRIORITY_DEFAULT</span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>user_data</code></strong></span><span class="initializer">=None</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>callback</code></em> :</span></p></td><td>a GAsyncReadyCallback to call when the request is satisfied.
                    </td></tr><tr><td><p><span class="term"><em class="parameter"><code>io_priority</code></em> :</span></p></td><td>the
                    <a class="xref" href="glib-constants.html#glib-priority-constants" title="Glib Priority Constants">Glib Priority Constants</a>
                    of the request. 
                    </td></tr><tr><td><p><span class="term"><em class="parameter"><code>cancellable</code></em> :</span></p></td><td>optional
                    <a class="link" href="class-giocancellable.html" title="gio.Cancellable"><code class="classname">gio.Cancellable</code></a>
                    object, <code class="literal">None</code> to ignore.</td></tr><tr><td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td><td>the data to pass to callback function.
                    </td></tr></tbody></table><p>
                The <code class="methodname">read_line_async</code>() method is the asynchronous version of
                <code class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--read-line" title="gio.DataInputStream.read_line">gio.DataInputStream.read_line</a></code>().
                It is an error to have two outstanding calls to this function.
            </p><p>
                For the synchronous version of this function, see
                <code class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--read-line" title="gio.DataInputStream.read_line">gio.DataInputStream.read_line</a></code>().
            </p><p>
                If cancellable is not <code class="literal">None</code>, then the operation can be cancelled
                by triggering the cancellable object from another thread. If the operation was
                cancelled, the error gio.ERROR_CANCELLED will be set
            </p></div><div class="refsect2" title="gio.DataInputStream.read_line_finish"><a name="method-giodatainputstream--read-line-finish"></a><h3>gio.DataInputStream.read_line_finish</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">read_line_finish</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>result</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>result</code></strong> :</span></p></td><td>a <a class="link" href="class-gioasyncresult.html" title="gio.AsyncResult"><code class="classname">gio.AsyncResult</code></a>.
                  </td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>a string with the line that was read in (without the newlines).
                    On an error, it will return <code class="literal">None</code> and error will be set.
                    If there's no content to read, it will still return <code class="literal">None</code>,
                    but error won't be set.
                    </td></tr></tbody></table><p>
                The <code class="methodname">read_line_finish</code>() method finishes an asynchronous
                file append operation started with
                <code class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--read-line-async" title="gio.DataInputStream.read_line_async">gio.DataInputStream.read_line_async</a></code>().
            </p></div><div class="refsect2" title="gio.DataInputStream.read_uint16"><a name="method-giodatainputstream--read-uint16"></a><h3>gio.DataInputStream.read_uint16</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">read_uint16</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</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>cancellable</code></strong> :</span></p></td><td>optional
                    <a class="link" href="class-giocancellable.html" title="gio.Cancellable"><code class="classname">gio.Cancellable</code></a>
                    object, <code class="literal">None</code> to ignore.
                  </td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>a signed 16-bit/2-byte value read from stream or 0 if an error occurred.
                    </td></tr></tbody></table><p>
                The <code class="methodname">read_uint16</code>() method reads a 16-bit/2-byte value from stream.
            </p><p>
                In order to get the correct byte order for this read operation, see
                <code class="methodname"><PYGTKDOCLINK HREF="method-giodatainputstream--get-byte_order">gio.DataInputStream.get_byte_order</PYGTKDOCLINK></code>()
                and
                <code class="methodname"><PYGTKDOCLINK HREF="method-giodatainputstream--set-byte_order">gio.DataInputStream.set_byte_order</PYGTKDOCLINK></code>().
            </p><p>
                If cancellable is not <code class="literal">None</code>, then the operation can be cancelled by
                triggering the cancellable object from another thread. If the operation was cancelled,
                the error gio.ERROR_CANCELLED will be returned.
            </p></div><div class="refsect2" title="gio.DataInputStream.read_uint32"><a name="method-giodatainputstream--read-uint32"></a><h3>gio.DataInputStream.read_uint32</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">read_uint32</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</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>cancellable</code></strong> :</span></p></td><td>optional
                    <a class="link" href="class-giocancellable.html" title="gio.Cancellable"><code class="classname">gio.Cancellable</code></a>
                    object, <code class="literal">None</code> to ignore.
                  </td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>a signed 32-bit/4-byte value read from the stream
                    or 0 if an error occurred.
                    </td></tr></tbody></table><p>
                The <code class="methodname">read_uint32</code>() method reads a signed 32-bit/4-byte value from stream.
            </p><p>
                In order to get the correct byte order for this read operation, see
                <code class="methodname"><PYGTKDOCLINK HREF="method-giodatainputstream--get-byte_order">gio.DataInputStream.get_byte_order</PYGTKDOCLINK></code>()
                and
                <code class="methodname"><PYGTKDOCLINK HREF="method-giodatainputstream--set-byte_order">gio.DataInputStream.set_byte_order</PYGTKDOCLINK></code>().
            </p><p>
                If cancellable is not <code class="literal">None</code>, then the operation can be cancelled by
                triggering the cancellable object from another thread. If the operation was cancelled,
                the error gio.ERROR_CANCELLED will be returned.
            </p></div><div class="refsect2" title="gio.DataInputStream.read_uint64"><a name="method-giodatainputstream--read-uint64"></a><h3>gio.DataInputStream.read_uint64</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">read_uint64</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</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>cancellable</code></strong> :</span></p></td><td>optional
                    <a class="link" href="class-giocancellable.html" title="gio.Cancellable"><code class="classname">gio.Cancellable</code></a>
                    object, <code class="literal">None</code> to ignore.
                  </td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>a signed 64-bit/8-byte value read from the stream
                    or 0 if an error occurred.
                    </td></tr></tbody></table><p>
                The <code class="methodname">read_uint64</code>() method reads a signed 64-bit/8-byte value from stream.
            </p><p>
                In order to get the correct byte order for this read operation, see
                <code class="methodname"><PYGTKDOCLINK HREF="method-giodatainputstream--get-byte_order">gio.DataInputStream.get_byte_order</PYGTKDOCLINK></code>()
                and
                <code class="methodname"><PYGTKDOCLINK HREF="method-giodatainputstream--set-byte_order">gio.DataInputStream.set_byte_order</PYGTKDOCLINK></code>().
            </p><p>
                If cancellable is not <code class="literal">None</code>, then the operation can be cancelled by
                triggering the cancellable object from another thread. If the operation was cancelled,
                the error gio.ERROR_CANCELLED will be returned.
            </p></div><div class="refsect2" title="gio.DataInputStream.read_until"><a name="method-giodatainputstream--read-until"></a><h3>gio.DataInputStream.read_until</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">read_until</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>stop_chars</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</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>stop_chars</code></strong> :</span></p></td><td>characters to terminate the read.
                  </td></tr><tr><td><p><span class="term"><strong class="parameter"><code>cancellable</code></strong> :</span></p></td><td>optional
                    <a class="link" href="class-giocancellable.html" title="gio.Cancellable"><code class="classname">gio.Cancellable</code></a>
                    object, <code class="literal">None</code> to ignore.
                  </td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>a string with the data that was read before encountering
                    any of the stop characters. This function will return NULL on an error.
                    </td></tr></tbody></table><p>
                The <code class="methodname">read_until</code>() reads a string from the data input
                stream, up to the first occurrence of any of the stop characters.
            </p></div><div class="refsect2" title="gio.DataInputStream.read_until_async"><a name="method-giodatainputstream--read-until-async"></a><h3>gio.DataInputStream.read_until_async</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">read_until_async</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>stop_chars</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>callback</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>io_priority</code></strong></span><span class="initializer">=glib.PRIORITY_DEFAULT</span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cancellable</code></strong></span><span class="initializer">=None</span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>user_data</code></strong></span><span class="initializer">=None</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>stop_chars</code></strong> :</span></p></td><td>characters to terminate the read.
                  </td></tr><tr><td><p><span class="term"><em class="parameter"><code>callback</code></em> :</span></p></td><td>a GAsyncReadyCallback to call when the request is satisfied.
                    </td></tr><tr><td><p><span class="term"><em class="parameter"><code>io_priority</code></em> :</span></p></td><td>the
                    <a class="xref" href="glib-constants.html#glib-priority-constants" title="Glib Priority Constants">Glib Priority Constants</a>
                    of the request. 
                    </td></tr><tr><td><p><span class="term"><em class="parameter"><code>cancellable</code></em> :</span></p></td><td>optional
                    <a class="link" href="class-giocancellable.html" title="gio.Cancellable"><code class="classname">gio.Cancellable</code></a>
                    object, <code class="literal">None</code> to ignore.</td></tr><tr><td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td><td>the data to pass to callback function.
                    </td></tr></tbody></table><p>
                The <code class="methodname">read_until_async</code>() method it's the asynchronous version of
                <code class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--read-until" title="gio.DataInputStream.read_until">gio.DataInputStream.read_until</a></code>().
                It is an error to have two outstanding calls to this function.
            </p><p>
                For the synchronous version of this function, see
                <code class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--read-until" title="gio.DataInputStream.read_until">gio.DataInputStream.read_until</a></code>().
            </p><p>
                If cancellable is not <code class="literal">None</code>, then the operation can be cancelled
                by triggering the cancellable object from another thread. If the operation was
                cancelled, the error gio.ERROR_CANCELLED will be set
            </p><p>
                When the operation is finished, callback will be called. You can then call
                <code class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--read-until-finish" title="gio.DataInputStream.read_until_finish">gio.DataInputStream.read_until_finish</a></code>()
                to get the result of the operation.
            </p></div><div class="refsect2" title="gio.DataInputStream.read_until_finish"><a name="method-giodatainputstream--read-until-finish"></a><h3>gio.DataInputStream.read_until_finish</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">read_until_finish</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>result</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>result</code></strong> :</span></p></td><td>a <a class="link" href="class-gioasyncresult.html" title="gio.AsyncResult"><code class="classname">gio.AsyncResult</code></a>.
                  </td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>a string with the data that was read before encountering
                    any of the stop characters. This function will return <code class="literal">None</code> on an error.
                    </td></tr></tbody></table><p>
                The <code class="methodname">read_until_finish</code>() method finishes an asynchronous
                file append operation started with
                <code class="methodname"><a class="link" href="class-giodatainputstream.html#method-giodatainputstream--read-until-async" title="gio.DataInputStream.read_until_async">gio.DataInputStream.read_until_async</a></code>().
            </p></div><div class="refsect2" title="gio.DataInputStream.set_byte_order"><a name="method-giodatainputstream--set-byte-order"></a><h3>gio.DataInputStream.set_byte_order</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">set_byte_order</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>order</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>order</code></strong> :</span></p></td><td>a
                  <a class="xref" href="gio-constants.html#gio-data-stream-byte-order-constants" title="Gio Data Stream Byte Order Constants">Gio Data Stream Byte Order Constants</a> to set.
                  </td></tr></tbody></table><p>
                The <code class="methodname">set_byte_order</code>() method sets the byte order for
                the given stream. All subsequent reads from the stream will be read in the given order.
            </p></div><div class="refsect2" title="gio.DataInputStream.set_newline_type"><a name="method-giodatainputstream--set-newline-type"></a><h3>gio.DataInputStream.set_newline_type</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">set_newline_type</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>type</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>type</code></strong> :</span></p></td><td>a
                  <a class="xref" href="gio-constants.html#gio-data-stream-newline-type-constants" title="Gio Data Stream Newline Type Constants">Gio Data Stream Newline Type Constants</a> to set.
                  </td></tr></tbody></table><p>
                The <code class="methodname">set_newline_type</code>() method sets the newline type for the stream.
            </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3>
                Note that using gio.DATA_STREAM_NEWLINE_TYPE_ANY is slightly unsafe. If a
                read chunk ends in "CR" we must read an additional byte to know if this is
                "CR" or "CR LF", and this might block if there is no more data availible.
            </div></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="class-giocancellable.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="gio-class-reference.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="class-giodataoutputstream.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">gio.Cancellable </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> gio.DataOutputStream</td></tr></table></div></body></html>