source: trunk/src/dbus/qdbusmessage.cpp@ 240

/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information ([email protected])
**
** This file is part of the QtDBus module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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** additional rights. These rights are described in the Nokia Qt LGPL
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
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**
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#include "qdbusmessage.h"

#include <qdebug.h>
#include <qstringlist.h>

#include <qdbus_symbols_p.h>

#include "qdbusargument_p.h"
#include "qdbuserror.h"
#include "qdbusmessage_p.h"
#include "qdbusmetatype.h"
#include "qdbusconnection_p.h"
#include "qdbusutil_p.h"

QT_BEGIN_NAMESPACE

static inline const char *data(const QByteArray &arr)
{
    return arr.isEmpty() ? 0 : arr.constData();
}

QDBusMessagePrivate::QDBusMessagePrivate()
    : msg(0), reply(0), type(DBUS_MESSAGE_TYPE_INVALID),
      timeout(-1), localReply(0), ref(1), delayedReply(false), localMessage(false)
{
}

QDBusMessagePrivate::~QDBusMessagePrivate()
{
    if (msg)
        q_dbus_message_unref(msg);
    if (reply)
        q_dbus_message_unref(reply);
    delete localReply;
}

/*!
    \since 4.3
     Returns the human-readable message associated with the error that was received.
*/
QString QDBusMessage::errorMessage() const
{
    if (d_ptr->type == ErrorMessage) {
        if (!d_ptr->message.isEmpty())
           return d_ptr->message;
        if (!d_ptr->arguments.isEmpty())
            return d_ptr->arguments.at(0).toString();
    }
    return QString();
}

/*!
    \internal
    Constructs a DBusMessage object from this object. The returned value must be de-referenced
    with q_dbus_message_unref.
*/
DBusMessage *QDBusMessagePrivate::toDBusMessage(const QDBusMessage &message)
{
    if (!qdbus_loadLibDBus())
        return 0;

    DBusMessage *msg = 0;
    const QDBusMessagePrivate *d_ptr = message.d_ptr;

    switch (d_ptr->type) {
    case DBUS_MESSAGE_TYPE_INVALID:
        //qDebug() << "QDBusMessagePrivate::toDBusMessage" <<  "message is invalid";
        break;
    case DBUS_MESSAGE_TYPE_METHOD_CALL:
        msg = q_dbus_message_new_method_call(data(d_ptr->service.toUtf8()), data(d_ptr->path.toUtf8()),
                                           data(d_ptr->interface.toUtf8()), data(d_ptr->name.toUtf8()));
        break;
    case DBUS_MESSAGE_TYPE_METHOD_RETURN:
        msg = q_dbus_message_new(DBUS_MESSAGE_TYPE_METHOD_RETURN);
        if (!d_ptr->localMessage) {
            q_dbus_message_set_destination(msg, q_dbus_message_get_sender(d_ptr->reply));
            q_dbus_message_set_reply_serial(msg, q_dbus_message_get_serial(d_ptr->reply));
        }
        break;
    case DBUS_MESSAGE_TYPE_ERROR:
        msg = q_dbus_message_new(DBUS_MESSAGE_TYPE_ERROR);
        q_dbus_message_set_error_name(msg, data(d_ptr->name.toUtf8()));
        if (!d_ptr->localMessage) {
            q_dbus_message_set_destination(msg, q_dbus_message_get_sender(d_ptr->reply));
            q_dbus_message_set_reply_serial(msg, q_dbus_message_get_serial(d_ptr->reply));
        }
        break;
    case DBUS_MESSAGE_TYPE_SIGNAL:
        msg = q_dbus_message_new_signal(data(d_ptr->path.toUtf8()), data(d_ptr->interface.toUtf8()),
                                      data(d_ptr->name.toUtf8()));
        break;
    default:
        Q_ASSERT(false);
        break;
    }
#if 0
    DBusError err;
    q_dbus_error_init(&err);
    if (q_dbus_error_is_set(&err)) {
        QDBusError qe(&err);
        qDebug() << "QDBusMessagePrivate::toDBusMessage" << qe;
    }
#endif
    if (!msg)
        return 0;

    QDBusMarshaller marshaller;
    QVariantList::ConstIterator it =  d_ptr->arguments.constBegin();
    QVariantList::ConstIterator cend = d_ptr->arguments.constEnd();
    q_dbus_message_iter_init_append(msg, &marshaller.iterator);
    if (!d_ptr->message.isEmpty())
        // prepend the error message
        marshaller.append(d_ptr->message);
    for ( ; it != cend; ++it)
        marshaller.appendVariantInternal(*it);

    // check if everything is ok
    if (marshaller.ok)
        return msg;

    // not ok;
    q_dbus_message_unref(msg);
    Q_ASSERT(false);
    return 0;
}

/*
struct DBusMessage
{
    DBusAtomic refcount;
    DBusHeader header;