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diff --git a/src/contrib/libqxt-2007-10-24/src/core/qxtpipe.cpp b/src/contrib/libqxt-2007-10-24/src/core/qxtpipe.cpp
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+/****************************************************************************
+**
+** Copyright (C) Qxt Foundation. Some rights reserved.
+**
+** This file is part of the QxtCore module of the Qt eXTension library
+**
+** This library is free software; you can redistribute it and/or modify it
+** under the terms of th Common Public License, version 1.0, as published by
+** IBM.
+**
+** This file is provided "AS IS", without WARRANTIES OR CONDITIONS OF ANY
+** KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY
+** WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR
+** FITNESS FOR A PARTICULAR PURPOSE.
+**
+** You should have received a copy of the CPL along with this file.
+** See the LICENSE file and the cpl1.0.txt file included with the source
+** distribution for more information. If you did not receive a copy of the
+** license, contact the Qxt Foundation.
+**
+** <http://libqxt.sourceforge.net>  <foundation@libqxt.org>
+**
+****************************************************************************/
+
+#include "qxtpipe.h"
+#include <QList>
+#include <QQueue>
+#include <QMutableListIterator>
+
+/**
+ * \class  QxtPipe QxtPipe
+ * \ingroup QxtCore
+ * \brief a pipeable QIODevice
+ *
+ * pipes can be connected to other pipes, to exchange data \n
+ * The default implementation uses a buffer. \n
+ * Reimplement to make your custom class able to be connected into a pipe chain. \n
+ *
+ * Example usage:
+ * \code
+ * QxtPipe p1;
+ * QxtPipe p2;
+ * p1|p2;
+ * p1.write("hello world");
+ * qDebug()<<p2.readAll();
+ * \endcode
+*/
+
+
+struct Connection
+{
+    QxtPipe * pipe;
+    QIODevice::OpenMode mode;
+    Qt::ConnectionType connectionType;
+};
+
+class QxtPipePrivate:public QxtPrivate<QxtPipe>
+{
+    public:
+        QQueue<char> q;
+        QList<Connection> connections;
+};
+
+/**
+ * Contructs a new QxtPipe.
+ */
+QxtPipe::QxtPipe(QObject * parent):QIODevice(parent)
+{
+    setOpenMode (QIODevice::ReadWrite);
+}
+
+
+/** reimplemented from QIODevice*/
+bool QxtPipe::isSequential () const
+{
+    return true;
+}
+
+/** reimplemented from QIODevice*/
+qint64 QxtPipe::bytesAvailable () const
+{
+    return qxt_d().q.count();
+}
+
+/**
+ * pipes the output of this instance to the \p other  QxtPipe using the given mode and connectiontype \n
+ * connection pipes with this function can be considered thread safe \n
+ *
+ * Example usage:
+ * \code
+    QxtPipe p1;
+    QxtPipe p2;
+    p1.connect(&p2,QIODevice::ReadOnly);
+
+    ///this data will go nowhere. p2 is connected to p1, but not p2 to p1.
+    p1.write("hello");
+
+    ///while this data will end up in p1
+    p2.write("world");
+
+    qDebug()<<p1.readAll();
+
+ * \endcode
+
+ */
+bool  QxtPipe::connect   (QxtPipe * other ,QIODevice::OpenMode mode,Qt::ConnectionType connectionType)
+{
+
+    ///tell the other pipe to write into this
+    if(mode & QIODevice::ReadOnly)
+    {
+        other->connect(this,QIODevice::WriteOnly,connectionType);
+    }
+
+
+    Connection c;
+    c.pipe=other;
+    c.mode=mode;
+    c.connectionType=connectionType;
+    qxt_d().connections.append(c);
+
+    return true;
+}
+
+/**
+ * cuts the pipe to the \p other QxtPipe
+ */
+bool QxtPipe::disconnect (QxtPipe * other )
+{
+    bool e=false;
+
+    QMutableListIterator<Connection> i(qxt_d().connections);
+    while (i.hasNext())
+    {
+        i.next();
+        if(i.value().pipe==other)
+        {
+            i.remove();
+            e=true;
+            other->disconnect(this);
+        }
+    }
+
+    return e;
+}
+
+/**
+ * convinence function for QxtPipe::connect.
+ * pipes the output of this instance to the \p other  QxtPipe in readwrite mode with autoconnection
+ */
+QxtPipe & QxtPipe::operator | ( QxtPipe & target)
+{
+    connect(&target);
+    return *this;
+}
+
+/** reimplemented from QIODevice*/
+qint64 QxtPipe::readData ( char * data, qint64 maxSize )
+{
+    QQueue<char> * q=&qxt_d().q;
+
+    qint64 i=0;
+    for (;i<maxSize;i++)
+    {
+        if (q->isEmpty())
+            break;
+        (*data++)=q->dequeue();
+    }
+    return i;
+}
+
+/** reimplemented from QIODevice*/
+qint64 QxtPipe::writeData ( const char * data, qint64 maxSize )
+{
+    foreach(Connection c,qxt_d().connections)
+    {
+
+        if(!(c.mode & QIODevice::WriteOnly))
+            continue;
+
+        //we want thread safety, so we use a QByteArray instead of the raw data. that migth be slow
+        QMetaObject::invokeMethod(c.pipe, "receiveData",c.connectionType,
+            Q_ARG(QByteArray, data),Q_ARG(QxtPipe *,this));
+            
+    }
+    return maxSize;
+}
+
+
+/** 
+receiveData is called from any connected pipe to input data into this instance.
+*/
+qint64 QxtPipe::receiveData (QByteArray datab ,QxtPipe * sender)
+{
+    QQueue<char> * q=&qxt_d().q;
+
+    const char * data =datab.constData();
+    qint64 maxSize =datab.size();
+
+    qint64 i=0;
+    for (;i<maxSize;i++)
+        q->enqueue(*data++);
+
+
+    foreach(Connection c,qxt_d().connections)
+    {
+
+        //don't write back to sender
+        if(c.pipe==sender)
+             continue;
+
+        if(!(c.mode & QIODevice::WriteOnly))
+            continue;
+
+
+        QMetaObject::invokeMethod(c.pipe, "receiveData",c.connectionType,
+            Q_ARG(QByteArray, datab),Q_ARG(QxtPipe *,this));
+    }
+
+
+    if (i>0)
+        emit(readyRead ());
+
+    return maxSize;
+}
+