<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en_US" xml:lang="en_US">
<head>
<title>kdecore: ksocketbuffer.cpp Source File (kdecore)</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="Content-Style-Type" content="text/css" />
<meta http-equiv="pics-label" content='(pics-1.1 "http://www.icra.org/ratingsv02.html" comment "ICRAonline DE v2.0" l gen true for "http://www.kde.org" r (nz 1 vz 1 lz 1 oz 1 cb 1) "http://www.rsac.org/ratingsv01.html" l gen true for "http://www.kde.org" r (n 0 s 0 v 0 l 0))' />
<meta name="trademark" content="KDE e.V." />
<meta name="description" content="K Desktop Environment Homepage, KDE.org" />
<meta name="MSSmartTagsPreventParsing" content="true" />
<meta name="robots" content="all" />
<link rel="shortcut icon" href="../../favicon.ico" />
<link rel="stylesheet" media="screen" type="text/css" title="APIDOX" href="doxygen.css" />
</head>
<body>
<div id="nav_header_top" align="right">
<a href="#content" class="doNotDisplay" accesskey="2">Skip to main content ::</a>
<a href="../.."><img id="nav_header_logo" alt="Home" align="left" src="../../kde_gear_64.png" border="0" /></a>
<span class="doNotDisplay">::</span>
<div id="nav_header_title" align="left">KDE API Reference</div>
</div>
<div id="nav_header_bottom" align="right">
<span class="doNotDisplay">:: <a href="#navigation" accesskey="5">Skip to Link Menu</a><br/></span>
<div id="nav_header_bottom_right" style="text-align: left;">
/ <a href="../..">API Reference</a>
/ <a href=".">kdecore</a>
</div>
</div>
<table id="main" border="0" cellpadding="0" cellspacing="0" width="100%">
<tr>
<td valign="top" class="menuheader" height="0"></td>
<td id="contentcolumn" valign="top" rowspan="2" >
<div id="content" style="padding-top: 0px;"><div style="width:100%; margin: 0px; padding: 0px;">
<a name="content"></a>
<!-- Generated by Doxygen 1.7.4 -->
<div class="header">
<div class="headertitle">
<div class="title">ksocketbuffer.cpp</div> </div>
</div>
<div class="contents">
<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- C++ -*-</span>
<a name="l00002"></a>00002 <span class="comment"> * Copyright (C) 2003 Thiago Macieira <thiago.macieira@kdemail.net></span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> *</span>
<a name="l00005"></a>00005 <span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining</span>
<a name="l00006"></a>00006 <span class="comment"> * a copy of this software and associated documentation files (the</span>
<a name="l00007"></a>00007 <span class="comment"> * "Software"), to deal in the Software without restriction, including</span>
<a name="l00008"></a>00008 <span class="comment"> * without limitation the rights to use, copy, modify, merge, publish,</span>
<a name="l00009"></a>00009 <span class="comment"> * distribute, sublicense, and/or sell copies of the Software, and to</span>
<a name="l00010"></a>00010 <span class="comment"> * permit persons to whom the Software is furnished to do so, subject to</span>
<a name="l00011"></a>00011 <span class="comment"> * the following conditions:</span>
<a name="l00012"></a>00012 <span class="comment"> *</span>
<a name="l00013"></a>00013 <span class="comment"> * The above copyright notice and this permission notice shall be included </span>
<a name="l00014"></a>00014 <span class="comment"> * in all copies or substantial portions of the Software.</span>
<a name="l00015"></a>00015 <span class="comment"> *</span>
<a name="l00016"></a>00016 <span class="comment"> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,</span>
<a name="l00017"></a>00017 <span class="comment"> * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF</span>
<a name="l00018"></a>00018 <span class="comment"> * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND</span>
<a name="l00019"></a>00019 <span class="comment"> * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE</span>
<a name="l00020"></a>00020 <span class="comment"> * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION</span>
<a name="l00021"></a>00021 <span class="comment"> * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION</span>
<a name="l00022"></a>00022 <span class="comment"> * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.</span>
<a name="l00023"></a>00023 <span class="comment"> */</span>
<a name="l00024"></a>00024
<a name="l00025"></a>00025 <span class="preprocessor">#include <config.h></span>
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="preprocessor">#include <assert.h></span>
<a name="l00028"></a>00028 <span class="preprocessor">#include <string.h></span>
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <span class="preprocessor">#include "ksocketbase.h"</span>
<a name="l00031"></a>00031 <span class="preprocessor">#include "ksocketbuffer_p.h"</span>
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="keyword">using namespace </span>KNetwork;
<a name="l00034"></a>00034 <span class="keyword">using namespace </span>KNetwork::Internal;
<a name="l00035"></a>00035
<a name="l00036"></a>00036 KSocketBuffer::KSocketBuffer(Q_LONG size)
<a name="l00037"></a>00037 : m_mutex(true), m_offset(0), m_size(size), m_length(0)
<a name="l00038"></a>00038 {
<a name="l00039"></a>00039 }
<a name="l00040"></a>00040
<a name="l00041"></a>00041 KSocketBuffer::KSocketBuffer(<span class="keyword">const</span> KSocketBuffer& other)
<a name="l00042"></a>00042 : <a class="code" href="classKIOBufferBase.html" title="base for I/O buffer implementation">KIOBufferBase</a>(other), m_mutex(true)
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044 *<span class="keyword">this</span> = other;
<a name="l00045"></a>00045 }
<a name="l00046"></a>00046
<a name="l00047"></a>00047 KSocketBuffer::~KSocketBuffer()
<a name="l00048"></a>00048 {
<a name="l00049"></a>00049 <span class="comment">// QValueList takes care of deallocating memory</span>
<a name="l00050"></a>00050 }
<a name="l00051"></a>00051
<a name="l00052"></a>00052 KSocketBuffer& KSocketBuffer::operator=(<span class="keyword">const</span> KSocketBuffer& other)
<a name="l00053"></a>00053 {
<a name="l00054"></a>00054 <a class="codeRef" href="qmutexlocker.html">QMutexLocker</a> locker1(&m_mutex);
<a name="l00055"></a>00055 <a class="codeRef" href="qmutexlocker.html">QMutexLocker</a> locker2(&other.m_mutex);
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <a class="code" href="classKIOBufferBase.html#afa11521a486fcba27289558b497b9094" title="Assignment operator.">KIOBufferBase::operator=</a>(other);
<a name="l00058"></a>00058
<a name="l00059"></a>00059 m_list = other.m_list; <span class="comment">// copy-on-write</span>
<a name="l00060"></a>00060 m_offset = other.m_offset;
<a name="l00061"></a>00061 m_size = other.m_size;
<a name="l00062"></a>00062 m_length = other.m_length;
<a name="l00063"></a>00063
<a name="l00064"></a>00064 <span class="keywordflow">return</span> *<span class="keyword">this</span>;
<a name="l00065"></a>00065 }
<a name="l00066"></a>00066
<a name="l00067"></a>00067 <span class="keywordtype">bool</span> KSocketBuffer::canReadLine()<span class="keyword"> const</span>
<a name="l00068"></a>00068 <span class="keyword"></span>{
<a name="l00069"></a>00069 <a class="codeRef" href="qmutexlocker.html">QMutexLocker</a> locker(&m_mutex);
<a name="l00070"></a>00070
<a name="l00071"></a>00071 <a class="codeRef" href="qvaluelistconstiterator.html">QValueListConstIterator<QByteArray></a> it = m_list.constBegin(),
<a name="l00072"></a>00072 <a class="code" href="namespaceKStdAccel.html#a8407902cbc74699e1a95168fee54c827" title="Goto end of the document.">end</a> = m_list.constEnd();
<a name="l00073"></a>00073 <a class="codeRef" href="qiodevice.html#Offset">QIODevice::Offset</a> offset = m_offset;
<a name="l00074"></a>00074
<a name="l00075"></a>00075 <span class="comment">// walk the buffer</span>
<a name="l00076"></a>00076 <span class="keywordflow">for</span> ( ; it != <a class="code" href="namespaceKStdAccel.html#a8407902cbc74699e1a95168fee54c827" title="Goto end of the document.">end</a>; ++it)
<a name="l00077"></a>00077 {
<a name="l00078"></a>00078 <span class="keywordflow">if</span> ((*it).find(<span class="charliteral">'\n'</span>, offset) != -1)
<a name="l00079"></a>00079 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00080"></a>00080 <span class="keywordflow">if</span> ((*it).find(<span class="charliteral">'\r'</span>, offset) != -1)
<a name="l00081"></a>00081 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00082"></a>00082 offset = 0;
<a name="l00083"></a>00083 }
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">// not found</span>
<a name="l00086"></a>00086 }
<a name="l00087"></a>00087
<a name="l00088"></a>00088 <a class="codeRef" href="qcstring.html">QCString</a> KSocketBuffer::readLine()
<a name="l00089"></a>00089 {
<a name="l00090"></a>00090 <span class="keywordflow">if</span> (!canReadLine())
<a name="l00091"></a>00091 <span class="keywordflow">return</span> <a class="codeRef" href="qcstring.html">QCString</a>(); <span class="comment">// empty</span>
<a name="l00092"></a>00092
<a name="l00093"></a>00093 <a class="codeRef" href="qmutexlocker.html">QMutexLocker</a> locker(&m_mutex);
<a name="l00094"></a>00094
<a name="l00095"></a>00095 <span class="comment">// find the offset of the newline in the buffer</span>
<a name="l00096"></a>00096 <span class="keywordtype">int</span> newline = 0;
<a name="l00097"></a>00097 <a class="codeRef" href="qvaluelistconstiterator.html">QValueListConstIterator<QByteArray></a> it = m_list.constBegin(),
<a name="l00098"></a>00098 <a class="code" href="namespaceKStdAccel.html#a8407902cbc74699e1a95168fee54c827" title="Goto end of the document.">end</a> = m_list.constEnd();
<a name="l00099"></a>00099 <a class="codeRef" href="qiodevice.html#Offset">QIODevice::Offset</a> offset = m_offset;
<a name="l00100"></a>00100
<a name="l00101"></a>00101 <span class="comment">// walk the buffer</span>
<a name="l00102"></a>00102 <span class="keywordflow">for</span> ( ; it != <a class="code" href="namespaceKStdAccel.html#a8407902cbc74699e1a95168fee54c827" title="Goto end of the document.">end</a>; ++it)
<a name="l00103"></a>00103 {
<a name="l00104"></a>00104 <span class="keywordtype">int</span> posnl = (*it).find(<span class="charliteral">'\n'</span>, offset);
<a name="l00105"></a>00105 <span class="keywordflow">if</span> (posnl == -1)
<a name="l00106"></a>00106 {
<a name="l00107"></a>00107 <span class="comment">// not found in this one</span>
<a name="l00108"></a>00108 newline += (*it).size();
<a name="l00109"></a>00109 offset = 0;
<a name="l00110"></a>00110 <span class="keywordflow">continue</span>;
<a name="l00111"></a>00111 }
<a name="l00112"></a>00112
<a name="l00113"></a>00113 <span class="comment">// we found it</span>
<a name="l00114"></a>00114 newline += posnl;
<a name="l00115"></a>00115 <span class="keywordflow">break</span>;
<a name="l00116"></a>00116 }
<a name="l00117"></a>00117
<a name="l00118"></a>00118 <a class="codeRef" href="qcstring.html">QCString</a> result(newline + 2 - m_offset);
<a name="l00119"></a>00119 consumeBuffer(result.data(), newline + 1 - m_offset);
<a name="l00120"></a>00120 <span class="keywordflow">return</span> result;
<a name="l00121"></a>00121 }
<a name="l00122"></a>00122
<a name="l00123"></a>00123 Q_LONG KSocketBuffer::length()<span class="keyword"> const</span>
<a name="l00124"></a>00124 <span class="keyword"></span>{
<a name="l00125"></a>00125 <span class="keywordflow">return</span> m_length;
<a name="l00126"></a>00126 }
<a name="l00127"></a>00127
<a name="l00128"></a>00128 Q_LONG KSocketBuffer::size()<span class="keyword"> const</span>
<a name="l00129"></a>00129 <span class="keyword"></span>{
<a name="l00130"></a>00130 <span class="keywordflow">return</span> m_size;
<a name="l00131"></a>00131 }
<a name="l00132"></a>00132
<a name="l00133"></a>00133 <span class="keywordtype">bool</span> KSocketBuffer::setSize(Q_LONG size)
<a name="l00134"></a>00134 {
<a name="l00135"></a>00135 m_size = size;
<a name="l00136"></a>00136 <span class="keywordflow">if</span> (size == -1 || m_length < m_size)
<a name="l00137"></a>00137 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00138"></a>00138
<a name="l00139"></a>00139 <span class="comment">// size is now smaller than length</span>
<a name="l00140"></a>00140 <a class="codeRef" href="qmutexlocker.html">QMutexLocker</a> locker(&m_mutex);
<a name="l00141"></a>00141
<a name="l00142"></a>00142 <span class="comment">// repeat the test</span>
<a name="l00143"></a>00143 <span class="keywordflow">if</span> (m_length < m_size)
<a name="l00144"></a>00144 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00145"></a>00145
<a name="l00146"></a>00146 <span class="comment">// discard from the beginning</span>
<a name="l00147"></a>00147 <span class="keywordflow">return</span> (m_length - m_size) == consumeBuffer(0L, m_length - m_size, <span class="keyword">true</span>);
<a name="l00148"></a>00148 }
<a name="l00149"></a>00149
<a name="l00150"></a>00150 Q_LONG KSocketBuffer::feedBuffer(<span class="keyword">const</span> <span class="keywordtype">char</span> *data, Q_LONG len)
<a name="l00151"></a>00151 {
<a name="l00152"></a>00152 <span class="keywordflow">if</span> (data == 0L || len == 0)
<a name="l00153"></a>00153 <span class="keywordflow">return</span> 0; <span class="comment">// nothing to write</span>
<a name="l00154"></a>00154 <span class="keywordflow">if</span> (isFull())
<a name="l00155"></a>00155 <span class="keywordflow">return</span> -1; <span class="comment">// can't write</span>
<a name="l00156"></a>00156
<a name="l00157"></a>00157 <a class="codeRef" href="qmutexlocker.html">QMutexLocker</a> locker(&m_mutex);
<a name="l00158"></a>00158
<a name="l00159"></a>00159 <span class="comment">// verify if we can add len bytes</span>
<a name="l00160"></a>00160 <span class="keywordflow">if</span> (m_size != -1 && (m_size - m_length) < len)
<a name="l00161"></a>00161 len = m_size - m_length;
<a name="l00162"></a>00162
<a name="l00163"></a>00163 <a class="codeRef" href="qbytearray.html">QByteArray</a> a(len);
<a name="l00164"></a>00164 a.duplicate(data, len);
<a name="l00165"></a>00165 m_list.append(a);
<a name="l00166"></a>00166
<a name="l00167"></a>00167 m_length += len;
<a name="l00168"></a>00168 <span class="keywordflow">return</span> len;
<a name="l00169"></a>00169 }
<a name="l00170"></a>00170
<a name="l00171"></a>00171 Q_LONG KSocketBuffer::consumeBuffer(<span class="keywordtype">char</span> *destbuffer, Q_LONG maxlen, <span class="keywordtype">bool</span> discard)
<a name="l00172"></a>00172 {
<a name="l00173"></a>00173 <span class="keywordflow">if</span> (maxlen == 0 || isEmpty())
<a name="l00174"></a>00174 <span class="keywordflow">return</span> 0;
<a name="l00175"></a>00175
<a name="l00176"></a>00176 <a class="codeRef" href="qvaluelistiterator.html">QValueListIterator<QByteArray></a> it = m_list.begin(),
<a name="l00177"></a>00177 <a class="code" href="namespaceKStdAccel.html#a8407902cbc74699e1a95168fee54c827" title="Goto end of the document.">end</a> = m_list.end();
<a name="l00178"></a>00178 <a class="codeRef" href="qiodevice.html#Offset">QIODevice::Offset</a> offset = m_offset;
<a name="l00179"></a>00179 Q_LONG copied = 0;
<a name="l00180"></a>00180
<a name="l00181"></a>00181 <span class="comment">// walk the buffer</span>
<a name="l00182"></a>00182 <span class="keywordflow">while</span> (it != end && maxlen)
<a name="l00183"></a>00183 {
<a name="l00184"></a>00184 <span class="comment">// calculate how much we'll copy</span>
<a name="l00185"></a>00185 <span class="keywordtype">size_t</span> to_copy = (*it).size() - offset;
<a name="l00186"></a>00186 <span class="keywordflow">if</span> (to_copy > maxlen)
<a name="l00187"></a>00187 to_copy = maxlen;
<a name="l00188"></a>00188
<a name="l00189"></a>00189 <span class="comment">// do the copying</span>
<a name="l00190"></a>00190 <span class="keywordflow">if</span> (destbuffer)
<a name="l00191"></a>00191 memcpy(destbuffer + copied, (*it).data() + offset, to_copy);
<a name="l00192"></a>00192 maxlen -= to_copy;
<a name="l00193"></a>00193 copied += to_copy;
<a name="l00194"></a>00194
<a name="l00195"></a>00195 <span class="keywordflow">if</span> ((*it).size() - offset > to_copy)
<a name="l00196"></a>00196 {
<a name="l00197"></a>00197 <span class="comment">// we did not copy everything</span>
<a name="l00198"></a>00198 offset += to_copy;
<a name="l00199"></a>00199 <span class="keywordflow">break</span>;
<a name="l00200"></a>00200 }
<a name="l00201"></a>00201 <span class="keywordflow">else</span>
<a name="l00202"></a>00202 {
<a name="l00203"></a>00203 <span class="comment">// we copied everything</span>
<a name="l00204"></a>00204 <span class="comment">// discard this element;</span>
<a name="l00205"></a>00205 offset = 0;
<a name="l00206"></a>00206 <span class="keywordflow">if</span> (discard)
<a name="l00207"></a>00207 it = m_list.remove(it);
<a name="l00208"></a>00208 <span class="keywordflow">else</span>
<a name="l00209"></a>00209 ++it;
<a name="l00210"></a>00210 }
<a name="l00211"></a>00211 }
<a name="l00212"></a>00212
<a name="l00213"></a>00213 <span class="keywordflow">if</span> (discard)
<a name="l00214"></a>00214 {
<a name="l00215"></a>00215 m_offset = offset;
<a name="l00216"></a>00216 m_length -= copied;
<a name="l00217"></a>00217 assert(m_length >= 0);
<a name="l00218"></a>00218 }
<a name="l00219"></a>00219
<a name="l00220"></a>00220 <span class="keywordflow">return</span> copied;
<a name="l00221"></a>00221 }
<a name="l00222"></a>00222
<a name="l00223"></a>00223 <span class="keywordtype">void</span> KSocketBuffer::clear()
<a name="l00224"></a>00224 {
<a name="l00225"></a>00225 <a class="codeRef" href="qmutexlocker.html">QMutexLocker</a> locker(&m_mutex);
<a name="l00226"></a>00226 m_list.clear();
<a name="l00227"></a>00227 m_offset = 0;
<a name="l00228"></a>00228 m_length = 0;
<a name="l00229"></a>00229 }
<a name="l00230"></a>00230
<a name="l00231"></a>00231 Q_LONG KSocketBuffer::sendTo(<a class="code" href="classKNetwork_1_1KActiveSocketBase.html" title="Abstract class for active sockets.">KActiveSocketBase</a>* dev, Q_LONG len)
<a name="l00232"></a>00232 {
<a name="l00233"></a>00233 <span class="keywordflow">if</span> (len == 0 || isEmpty())
<a name="l00234"></a>00234 <span class="keywordflow">return</span> 0;
<a name="l00235"></a>00235
<a name="l00236"></a>00236 <a class="codeRef" href="qmutexlocker.html">QMutexLocker</a> locker(&m_mutex);
<a name="l00237"></a>00237
<a name="l00238"></a>00238 <a class="codeRef" href="qvaluelistiterator.html">QValueListIterator<QByteArray></a> it = m_list.begin(),
<a name="l00239"></a>00239 <a class="code" href="namespaceKStdAccel.html#a8407902cbc74699e1a95168fee54c827" title="Goto end of the document.">end</a> = m_list.end();
<a name="l00240"></a>00240 <a class="codeRef" href="qiodevice.html#Offset">QIODevice::Offset</a> offset = m_offset;
<a name="l00241"></a>00241 Q_LONG written = 0;
<a name="l00242"></a>00242
<a name="l00243"></a>00243 <span class="comment">// walk the buffer</span>
<a name="l00244"></a>00244 <span class="keywordflow">while</span> (it != end && (len || len == -1))
<a name="l00245"></a>00245 {
<a name="l00246"></a>00246 <span class="comment">// we have to write each element up to len bytes</span>
<a name="l00247"></a>00247 <span class="comment">// but since we can have several very small buffers, we can make things</span>
<a name="l00248"></a>00248 <span class="comment">// better by concatenating a few of them into a big buffer</span>
<a name="l00249"></a>00249 <span class="comment">// question is: how big should that buffer be? 2 kB should be enough</span>
<a name="l00250"></a>00250
<a name="l00251"></a>00251 Q_ULONG bufsize = 1460;
<a name="l00252"></a>00252 <span class="keywordflow">if</span> (len != -1 && len < bufsize)
<a name="l00253"></a>00253 bufsize = len;
<a name="l00254"></a>00254 <a class="codeRef" href="qbytearray.html">QByteArray</a> buf(bufsize);
<a name="l00255"></a>00255 Q_LONG count = 0;
<a name="l00256"></a>00256
<a name="l00257"></a>00257 <span class="keywordflow">while</span> (it != end && count + ((*it).size() - offset) <= bufsize)
<a name="l00258"></a>00258 {
<a name="l00259"></a>00259 memcpy(buf.data() + count, (*it).data() + offset, (*it).size() - offset);
<a name="l00260"></a>00260 count += (*it).size() - offset;
<a name="l00261"></a>00261 offset = 0;
<a name="l00262"></a>00262 ++it;
<a name="l00263"></a>00263 }
<a name="l00264"></a>00264
<a name="l00265"></a>00265 <span class="comment">// see if we can still fit more</span>
<a name="l00266"></a>00266 <span class="keywordflow">if</span> (count < bufsize && it != end)
<a name="l00267"></a>00267 {
<a name="l00268"></a>00268 <span class="comment">// getting here means this buffer (*it) is larger than</span>
<a name="l00269"></a>00269 <span class="comment">// (bufsize - count) (even for count == 0).</span>
<a name="l00270"></a>00270 memcpy(buf.data() + count, (*it).data() + offset, bufsize - count);
<a name="l00271"></a>00271 offset += bufsize - count;
<a name="l00272"></a>00272 count = bufsize;
<a name="l00273"></a>00273 }
<a name="l00274"></a>00274
<a name="l00275"></a>00275 <span class="comment">// now try to write those bytes</span>
<a name="l00276"></a>00276 Q_LONG wrote = dev-><a class="code" href="classKNetwork_1_1KActiveSocketBase.html#a504bf1dcb57f6724017045882a647464" title="Writes the given data to the socket.">writeBlock</a>(buf, count);
<a name="l00277"></a>00277
<a name="l00278"></a>00278 <span class="keywordflow">if</span> (wrote == -1)
<a name="l00279"></a>00279 <span class="comment">// error?</span>
<a name="l00280"></a>00280 <span class="keywordflow">break</span>;
<a name="l00281"></a>00281
<a name="l00282"></a>00282 written += wrote;
<a name="l00283"></a>00283 <span class="keywordflow">if</span> (wrote != count)
<a name="l00284"></a>00284 <span class="comment">// can't fit more?</span>
<a name="l00285"></a>00285 <span class="keywordflow">break</span>;
<a name="l00286"></a>00286 }
<a name="l00287"></a>00287
<a name="l00288"></a>00288 <span class="comment">// discard data that has been written</span>
<a name="l00289"></a>00289 <span class="comment">// this updates m_length too</span>
<a name="l00290"></a>00290 <span class="keywordflow">if</span> (written)
<a name="l00291"></a>00291 consumeBuffer(0L, written);
<a name="l00292"></a>00292
<a name="l00293"></a>00293 <span class="keywordflow">return</span> written;
<a name="l00294"></a>00294 }
<a name="l00295"></a>00295
<a name="l00296"></a>00296 Q_LONG KSocketBuffer::receiveFrom(<a class="code" href="classKNetwork_1_1KActiveSocketBase.html" title="Abstract class for active sockets.">KActiveSocketBase</a>* dev, Q_LONG len)
<a name="l00297"></a>00297 {
<a name="l00298"></a>00298 <span class="keywordflow">if</span> (len == 0 || isFull())
<a name="l00299"></a>00299 <span class="keywordflow">return</span> 0;
<a name="l00300"></a>00300
<a name="l00301"></a>00301 <a class="codeRef" href="qmutexlocker.html">QMutexLocker</a> locker(&m_mutex);
<a name="l00302"></a>00302
<a name="l00303"></a>00303 <span class="keywordflow">if</span> (len == -1)
<a name="l00304"></a>00304 len = dev-><a class="code" href="classKNetwork_1_1KActiveSocketBase.html#a27abcb04c3127b4d702f9fa308eea99a" title="Returns the number of bytes available for reading without blocking.">bytesAvailable</a>();
<a name="l00305"></a>00305 <span class="keywordflow">if</span> (len <= 0)
<a name="l00306"></a>00306 <span class="comment">// error or closing socket</span>
<a name="l00307"></a>00307 <span class="keywordflow">return</span> len;
<a name="l00308"></a>00308
<a name="l00309"></a>00309 <span class="comment">// see if we can read that much</span>
<a name="l00310"></a>00310 <span class="keywordflow">if</span> (m_size != -1 && len > (m_size - m_length))
<a name="l00311"></a>00311 len = m_size - m_length;
<a name="l00312"></a>00312
<a name="l00313"></a>00313 <span class="comment">// here, len contains just as many bytes as we're supposed to read</span>
<a name="l00314"></a>00314
<a name="l00315"></a>00315 <span class="comment">// now do the reading</span>
<a name="l00316"></a>00316 <a class="codeRef" href="qbytearray.html">QByteArray</a> a(len);
<a name="l00317"></a>00317 len = dev-><a class="code" href="classKNetwork_1_1KActiveSocketBase.html#a7b4b7304817fd573c77839982b5e3cd3" title="Reads data from the socket.">readBlock</a>(a.data(), len);
<a name="l00318"></a>00318
<a name="l00319"></a>00319 <span class="keywordflow">if</span> (len == -1)
<a name="l00320"></a>00320 <span class="comment">// error?</span>
<a name="l00321"></a>00321 <span class="keywordflow">return</span> -1;
<a name="l00322"></a>00322
<a name="l00323"></a>00323 <span class="comment">// success</span>
<a name="l00324"></a>00324 <span class="comment">// resize the buffer and add it</span>
<a name="l00325"></a>00325 a.truncate(len);
<a name="l00326"></a>00326 m_list.append(a);
<a name="l00327"></a>00327 m_length += len;
<a name="l00328"></a>00328 <span class="keywordflow">return</span> len;
<a name="l00329"></a>00329 }
</pre></div></div>
</div>
</div></div>
</td>
</tr>
<tr>
<td valign="top" id="leftmenu" width="25%">
<a name="navigation"></a>
<div class="menu_box"><h2>kdecore</h2>
<div class="nav_list">
<ul><li><a href="index.html">Main Page</a></li><li><a href="modules.html">Modules</a></li><li><a href="namespaces.html">Namespace List</a></li><li><a href="hierarchy.html">Class Hierarchy</a></li><li><a href="classes.html">Alphabetical List</a></li><li><a href="annotated.html">Class List</a></li><li><a href="files.html">File List</a></li><li><a href="namespacemembers.html">Namespace Members</a></li><li><a href="functions.html">Class Members</a></li><li><a href="pages.html">Related Pages</a></li></ul>
<!--
<h2>Class Picker</h2>
<div style="text-align: center;">
<form name="guideform">
<select name="guidelinks" style="width:100%;" onChange="window.location=document.guideform.guidelinks.options[document.guideform.guidelinks.selectedIndex].value">
<option value="annotated.html">-- Choose --</option>
<option value="classKAboutData.html">kaboutdata</option>, <option value="classKAboutPerson.html">kaboutperson</option>, <option value="classKAboutTranslator.html">kabouttranslator</option>, <option value="classKAccel.html">kaccel</option>, <option value="classKAcceleratorManager.html">kacceleratormanager</option>, <option value="classKAccelManagerAlgorithm.html">kaccelmanageralgorithm</option>, <option value="classKAccelShortcutList.html">kaccelshortcutlist</option>, <option value="classKAccelString.html">kaccelstring</option>, <option value="classKAddressInfo.html">kaddressinfo</option>, <option value="classKAppDCOPInterface.html">kappdcopinterface</option>, <option value="classKApplication.html">kapplication</option>, <option value="classKAsyncIO.html">kasyncio</option>, <option value="classKAudioPlayer.html">kaudioplayer</option>, <option value="classKBufferedIO.html">kbufferedio</option>, <option value="classKCalendarSystem.html">kcalendarsystem</option>, <option value="classKCalendarSystemFactory.html">kcalendarsystemfactory</option>, <option value="classKCalendarSystemJalali.html">kcalendarsystemjalali</option>, <option value="classKCatalogue.html">kcatalogue</option>, <option value="classKCharMacroExpander.html">kcharmacroexpander</option>, <option value="classKCharsets.html">kcharsets</option>, <option value="classKClipboardSynchronizer.html">kclipboardsynchronizer</option>, <option value="classKCmdLineArgs.html">kcmdlineargs</option>, <option value="classKCodecs.html">kcodecs</option>, <option value="classKCompletion.html">kcompletion</option>, <option value="classKCompletionBase.html">kcompletionbase</option>, <option value="classKCompletionMatches.html">kcompletionmatches</option>, <option value="classKCompTreeNode.html">kcomptreenode</option>, <option value="classKConfig.html">kconfig</option>, <option value="classKConfigBackEnd.html">kconfigbackend</option>, <option value="classKConfigBase.html">kconfigbase</option>, <option value="classKConfigDialogManager.html">kconfigdialogmanager</option>, <option value="classKConfigGroup.html">kconfiggroup</option>, <option value="classKConfigGroupSaver.html">kconfiggroupsaver</option>, <option value="classKConfigINIBackEnd.html">kconfiginibackend</option>, <option value="classKConfigSkeleton.html">kconfigskeleton</option>, <option value="classKConfigSkeleton_1_1ItemBool.html">kconfigskeleton::itembool</option>, <option value="classKConfigSkeleton_1_1ItemColor.html">kconfigskeleton::itemcolor</option>, <option value="classKConfigSkeleton_1_1ItemDateTime.html">kconfigskeleton::itemdatetime</option>, <option value="classKConfigSkeleton_1_1ItemDouble.html">kconfigskeleton::itemdouble</option>, <option value="classKConfigSkeleton_1_1ItemEnum.html">kconfigskeleton::itemenum</option>, <option value="classKConfigSkeleton_1_1ItemFont.html">kconfigskeleton::itemfont</option>, <option value="classKConfigSkeleton_1_1ItemInt.html">kconfigskeleton::itemint</option>, <option value="classKConfigSkeleton_1_1ItemInt64.html">kconfigskeleton::itemint64</option>, <option value="classKConfigSkeleton_1_1ItemIntList.html">kconfigskeleton::itemintlist</option>, <option value="classKConfigSkeleton_1_1ItemLong.html">kconfigskeleton::itemlong</option>, <option value="classKConfigSkeleton_1_1ItemPassword.html">kconfigskeleton::itempassword</option>, <option value="classKConfigSkeleton_1_1ItemPath.html">kconfigskeleton::itempath</option>, <option value="classKConfigSkeleton_1_1ItemPathList.html">kconfigskeleton::itempathlist</option>, <option value="classKConfigSkeleton_1_1ItemPoint.html">kconfigskeleton::itempoint</option>, <option value="classKConfigSkeleton_1_1ItemProperty.html">kconfigskeleton::itemproperty</option>, <option value="classKConfigSkeleton_1_1ItemRect.html">kconfigskeleton::itemrect</option>, <option value="classKConfigSkeleton_1_1ItemSize.html">kconfigskeleton::itemsize</option>, <option value="classKConfigSkeleton_1_1ItemString.html">kconfigskeleton::itemstring</option>, <option value="classKConfigSkeleton_1_1ItemStringList.html">kconfigskeleton::itemstringlist</option>, <option value="classKConfigSkeleton_1_1ItemUInt.html">kconfigskeleton::itemuint</option>, <option value="classKConfigSkeleton_1_1ItemUInt64.html">kconfigskeleton::itemuint64</option>, <option value="classKConfigSkeleton_1_1ItemULong.html">kconfigskeleton::itemulong</option>, <option value="classKConfigSkeletonItem.html">kconfigskeletonitem</option>, <option value="classKCrash.html">kcrash</option>, <option value="classKDCOPPropertyProxy.html">kdcoppropertyproxy</option>, <option value="classKDebugDCOPIface.html">kdebugdcopiface</option>, <option value="classKDesktopFile.html">kdesktopfile</option>, <option value="classKExtendedSocket.html">kextendedsocket</option>, <option value="classKGenericFactory.html">kgenericfactory</option>, <option value="classKGenericFactory_3_01KTypeList_3_01Product_00_01ProductListTail_01_4_00_01KTypeList_3_01Pare1ed8d1e5a9847c99711cad3b12c7e96c.html">kgenericfactory< ktypelist< product, productlisttail >, ktypelist< pare1ed8d1e5a9847c99711cad3b12c7e96c</option>, <option value="classKGenericFactory_3_01KTypeList_3_01Product_00_01ProductListTail_01_4_00_01KTypeList_3_01Paref6a00f76851e0daa2cb662bb8a41fc7f.html">kgenericfactory< ktypelist< product, productlisttail >, ktypelist< paref6a00f76851e0daa2cb662bb8a41fc7f</option>, <option value="classKGenericFactory_3_01KTypeList_3_01Product_00_01ProductListTail_01_4_00_01QObject_01_4.html">kgenericfactory< ktypelist< product, productlisttail >, qobject ></option>, <option value="classKGlobal.html">kglobal</option>, <option value="classKGlobalAccel.html">kglobalaccel</option>, <option value="classKGlobalSettings.html">kglobalsettings</option>, <option value="classKIcon.html">kicon</option>, <option value="classKIconEffect.html">kiconeffect</option>, <option value="classKIconLoader.html">kiconloader</option>, <option value="classKIconTheme.html">kicontheme</option>, <option value="classKInetSocketAddress.html">kinetsocketaddress</option>, <option value="classKInstance.html">kinstance</option>, <option value="classKIOBufferBase.html">kiobufferbase</option>, <option value="classKIPC.html">kipc</option>, <option value="classKKey.html">kkey</option>, <option value="classKKeyNative.html">kkeynative</option>, <option value="classKKeySequence.html">kkeysequence</option>, <option value="classKLibFactory.html">klibfactory</option>, <option value="classKLibLoader.html">klibloader</option>, <option value="classKLibrary.html">klibrary</option>, <option value="classKLocale.html">klocale</option>, <option value="classKLockFile.html">klockfile</option>, <option value="classKMacroExpanderBase.html">kmacroexpanderbase</option>, <option value="classKMD4.html">kmd4</option>, <option value="classKMD5.html">kmd5</option>, <option value="classKMimeSourceFactory.html">kmimesourcefactory</option>, <option value="classKMountPoint.html">kmountpoint</option>, <option value="classKMultipleDrag.html">kmultipledrag</option>, <option value="classKNetwork_1_1KActiveSocketBase.html">knetwork::kactivesocketbase</option>, <option value="classKNetwork_1_1KBufferedSocket.html">knetwork::kbufferedsocket</option>, <option value="classKNetwork_1_1KClientSocketBase.html">knetwork::kclientsocketbase</option>, <option value="classKNetwork_1_1KDatagramPacket.html">knetwork::kdatagrampacket</option>, <option value="classKNetwork_1_1KDatagramSocket.html">knetwork::kdatagramsocket</option>, <option value="classKNetwork_1_1KHttpProxySocketDevice.html">knetwork::khttpproxysocketdevice</option>, <option value="classKNetwork_1_1KInetSocketAddress.html">knetwork::kinetsocketaddress</option>, <option value="classKNetwork_1_1KIpAddress.html">knetwork::kipaddress</option>, <option value="classKNetwork_1_1KMulticastSocket.html">knetwork::kmulticastsocket</option>, <option value="classKNetwork_1_1KMulticastSocketImpl.html">knetwork::kmulticastsocketimpl</option>, <option value="classKNetwork_1_1KNetworkInterface.html">knetwork::knetworkinterface</option>, <option value="classKNetwork_1_1KPassiveSocketBase.html">knetwork::kpassivesocketbase</option>, <option value="classKNetwork_1_1KResolver.html">knetwork::kresolver</option>, <option value="classKNetwork_1_1KResolverEntry.html">knetwork::kresolverentry</option>, <option value="classKNetwork_1_1KResolverResults.html">knetwork::kresolverresults</option>, <option value="classKNetwork_1_1KResolverWorkerBase_1_1ResolverLocker.html">knetwork::kresolverworkerbase::resolverlocker</option>, <option value="classKNetwork_1_1KReverseResolver.html">knetwork::kreverseresolver</option>, <option value="classKNetwork_1_1KServerSocket.html">knetwork::kserversocket</option>, <option value="classKNetwork_1_1KSocketAddress.html">knetwork::ksocketaddress</option>, <option value="classKNetwork_1_1KSocketBase.html">knetwork::ksocketbase</option>, <option value="classKNetwork_1_1KSocketDevice.html">knetwork::ksocketdevice</option>, <option value="classKNetwork_1_1KSocketDeviceFactory.html">knetwork::ksocketdevicefactory</option>, <option value="classKNetwork_1_1KSocksSocketDevice.html">knetwork::ksockssocketdevice</option>, <option value="classKNetwork_1_1KStreamSocket.html">knetwork::kstreamsocket</option>, <option value="classKNetwork_1_1KUnixSocketAddress.html">knetwork::kunixsocketaddress</option>, <option value="classKNotifyClient_1_1Instance.html">knotifyclient::instance</option>, <option value="classKPalette.html">kpalette</option>, <option value="classKPixmapProvider.html">kpixmapprovider</option>, <option value="classKPopupAccelManager.html">kpopupaccelmanager</option>, <option value="classKProcess.html">kprocess</option>, <option value="classKProcessController.html">kprocesscontroller</option>, <option value="classKProcIO.html">kprocio</option>, <option value="classKProtocolInfoFactory.html">kprotocolinfofactory</option>, <option value="classKPty.html">kpty</option>, <option value="classKRandomSequence.html">krandomsequence</option>, <option value="classKRegExp.html">kregexp</option>, <option value="classKRegExpPrivate.html">kregexpprivate</option>, <option value="classKRFCDate.html">krfcdate</option>, <option value="classKRootProp.html">krootprop</option>, <option value="classKSaveFile.html">ksavefile</option>, <option value="classKServerSocket.html">kserversocket</option>, <option value="classKSessionManaged.html">ksessionmanaged</option>, <option value="classKShared.html">kshared</option>, <option value="classKSharedConfig.html">ksharedconfig</option>, <option value="classKSharedPtr.html">ksharedptr</option>, <option value="classKShellProcess.html">kshellprocess</option>, <option value="classKShortcut.html">kshortcut</option>, <option value="classKShortcutList.html">kshortcutlist</option>, <option value="classKSimpleConfig.html">ksimpleconfig</option>, <option value="classKSocket.html">ksocket</option>, <option value="classKSocketAddress.html">ksocketaddress</option>, <option value="classKSocks.html">ksocks</option>, <option value="classKSortableItem.html">ksortableitem</option>, <option value="classKSortableValueList.html">ksortablevaluelist</option>, <option value="classKStandardDirs.html">kstandarddirs</option>, <option value="classKStaticDeleter.html">kstaticdeleter</option>, <option value="classKStaticDeleterBase.html">kstaticdeleterbase</option>, <option value="classKStdAccel_1_1ShortcutList.html">kstdaccel::shortcutlist</option>, <option value="classKStringHandler.html">kstringhandler</option>, <option value="classKSycocaEntry.html">ksycocaentry</option>, <option value="classKSycocaFactoryList.html">ksycocafactorylist</option>, <option value="classKTempDir.html">ktempdir</option>, <option value="classKTempFile.html">ktempfile</option>, <option value="classKTimezone.html">ktimezone</option>, <option value="classKTimezoneDetails.html">ktimezonedetails</option>, <option value="classKTimezones.html">ktimezones</option>, <option value="classKTimezoneSource.html">ktimezonesource</option>, <option value="classKUniqueApplication.html">kuniqueapplication</option>, <option value="classKUnixSocketAddress.html">kunixsocketaddress</option>, <option value="classKURL.html">kurl</option>, <option value="classKURL_1_1List.html">kurl::list</option>, <option value="classKURLDrag.html">kurldrag</option>, <option value="classKUser.html">kuser</option>, <option value="classKUserGroup.html">kusergroup</option>, <option value="classKVMAllocator.html">kvmallocator</option>, <option value="classKWin.html">kwin</option>, <option value="classKWin_1_1WindowInfo.html">kwin::windowinfo</option>, <option value="classKWinModule.html">kwinmodule</option>, <option value="classKWordMacroExpander.html">kwordmacroexpander</option>, <option value="classKXErrorHandler.html">kxerrorhandler</option>, <option value="classKZoneAllocator.html">kzoneallocator</option>, <option value="classNET.html">net</option>,
</select>
</form>
</div>
-->
</div></div>
<div class="menu_box"><h2>API Dox</h2>
<div class="nav_list">
<ul>
<li><a href="../../arts/html/index.html">arts</a></li><li><a href="../../dcop/html/index.html">dcop</a></li><li><a href="../../dnssd/html/index.html">dnssd</a></li><li><a href="../../interfaces/html/index.html">interfaces</a></li><li> <a href="../../interfaces/kimproxy/interface/html/index.html">interface</a></li><li> <a href="../../interfaces/kimproxy/library/html/index.html">library</a></li><li> <a href="../../interfaces/kspeech/html/index.html">kspeech</a></li><li> <a href="../../interfaces/ktexteditor/html/index.html">ktexteditor</a></li><li><a href="../../kabc/html/index.html">kabc</a></li><li><a href="../../kate/html/index.html">kate</a></li><li><a href="../../kcmshell/html/index.html">kcmshell</a></li><li><a href="../../kdecore/html/index.html">kdecore</a></li><li><a href="../../kded/html/index.html">kded</a></li><li><a href="../../kdefx/html/index.html">kdefx</a></li><li><a href="../../kdeprint/html/index.html">kdeprint</a></li><li><a href="../../kdesu/html/index.html">kdesu</a></li><li><a href="../../kdeui/html/index.html">kdeui</a></li><li><a href="../../kdoctools/html/index.html">kdoctools</a></li><li><a href="../../khtml/html/index.html">khtml</a></li><li><a href="../../kimgio/html/index.html">kimgio</a></li><li><a href="../../kinit/html/index.html">kinit</a></li><li><a href="../../kio/html/index.html">kio</a></li><li> <a href="../../kio/bookmarks/html/index.html">bookmarks</a></li><li> <a href="../../kio/httpfilter/html/index.html">httpfilter</a></li><li> <a href="../../kio/kfile/html/index.html">kfile</a></li><li> <a href="../../kio/kio/html/index.html">kio</a></li><li> <a href="../../kio/kioexec/html/index.html">kioexec</a></li><li> <a href="../../kio/kpasswdserver/html/index.html">kpasswdserver</a></li><li> <a href="../../kio/kssl/html/index.html">kssl</a></li><li><a href="../../kioslave/html/index.html">kioslave</a></li><li> <a href="../../kioslave/http/html/index.html">http</a></li><li><a href="../../kjs/html/index.html">kjs</a></li><li><a href="../../kmdi/html/index.html">kmdi</a></li><li> <a href="../../kmdi/kmdi/html/index.html">kmdi</a></li><li><a href="../../knewstuff/html/index.html">knewstuff</a></li><li><a href="../../kparts/html/index.html">kparts</a></li><li><a href="../../kresources/html/index.html">kresources</a></li><li><a href="../../kspell2/html/index.html">kspell2</a></li><li><a href="../../kunittest/html/index.html">kunittest</a></li><li><a href="../../kutils/html/index.html">kutils</a></li><li><a href="../../kwallet/html/index.html">kwallet</a></li><li><a href="../../libkmid/html/index.html">libkmid</a></li><li><a href="../../libkscreensaver/html/index.html">libkscreensaver</a></li>
</ul></div></div>
</td>
</tr>
</table>
<span class="doNotDisplay">
<a href="http://www.kde.org/" accesskey="8">KDE Home</a> |
<a href="http://accessibility.kde.org/" accesskey="9">KDE Accessibility Home</a> |
<a href="http://www.kde.org/media/accesskeys.php" accesskey="0">Description of Access Keys</a>
</span>
<div style="height: 8px"></div>
<div id="footer">
<div id="footer_left">
Maintained by <a href="mailto:groot@kde.org">Adriaan de Groot</a>
and
<a href="mailto:winter@kde.org">Allen Winter</a>.
<br/>
KDE and K Desktop Environment are trademarks of <a href="http://www.kde.org/areas/kde-ev/" title="Homepage of the KDE non-profit Organization">KDE e.V.</a> |
<a href="http://www.kde.org/contact/impressum.php">Legal</a>
</div>
<div id="footer_right"><img src="/media/images/footer_right.png" style="margin: 0px" alt="" /></div>
</div>
<!--
WARNING: DO NOT SEND MAIL TO THE FOLLOWING EMAIL ADDRESS! YOU WILL
BE BLOCKED INSTANTLY AND PERMANENTLY!
<a href="mailto:aaaatrap-425acc3b5374943f@kde.org">Block me</a>
WARNING END
-->
</body>
</html>
