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/* -*- mode: C++ -*-
*
* Copyright (C) 2006 Trolltech AS. All rights reserved.
* Author: Thiago Macieira <thiago.macieira@trolltech.com>
*
* Licensed under the Academic Free License version 2.1
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include <QtCore/qcoreapplication.h>
#include <QtCore/qmetaobject.h>
#include <QtCore/qstringlist.h>
#include "qdbusinterface_p.h" // for ANNOTATION_NO_WAIT
#include "qdbusabstractadaptor_p.h" // for QCLASSINFO_DBUS_*
#include "qdbusconnection_p.h" // for the flags
#include "qdbusutil.h"
extern QDBUS_EXPORT QString qDBusGenerateMetaObjectXml(QString interface, const QMetaObject *mo,
const QMetaObject *base, int flags);
// implement the D-Bus org.freedesktop.DBus.Introspectable interface
// we do that by analysing the metaObject of all the adaptor interfaces
static QString generateInterfaceXml(const QMetaObject *mo, int flags, int methodOffset, int propOffset)
{
QString retval;
// start with properties:
if (flags & QDBusConnection::ExportProperties) {
for (int i = propOffset; i < mo->propertyCount(); ++i) {
static const char *accessvalues[] = {0, "read", "write", "readwrite"};
QMetaProperty mp = mo->property(i);
if (!mp.isScriptable() && (flags & QDBusConnection::ExportAllProperties) !=
QDBusConnection::ExportAllProperties)
continue;
int access = 0;
if (mp.isReadable())
access |= 1;
if (mp.isWritable())
access |= 2;
int typeId = qDBusNameToTypeId(mp.typeName());
if (!typeId)
continue;
retval += QString(QLatin1String(" <property name=\"%1\" type=\"%2\" access=\"%3\" />\n"))
.arg(QLatin1String(mp.name()))
.arg(QLatin1String( QDBusUtil::typeToSignature( QVariant::Type(typeId) )))
.arg(QLatin1String( accessvalues[access] ));
}
}
// now add methods:
for (int i = methodOffset; i < mo->methodCount(); ++i) {
QMetaMethod mm = mo->method(i);
QByteArray signature = mm.signature();
int paren = signature.indexOf('(');
bool isSignal;
if (mm.methodType() == QMetaMethod::Signal)
// adding a signal
isSignal = true;
else if (mm.methodType() == QMetaMethod::Slot && mm.access() == QMetaMethod::Public)
isSignal = false;
else
continue; // neither signal nor public slot
if ((isSignal && !(flags & QDBusConnection::ExportSignals)) ||
(!isSignal && !(flags & QDBusConnection::ExportSlots)))
continue;
QString xml = QString(QLatin1String(" <%1 name=\"%2\">\n"))
.arg(isSignal ? QLatin1String("signal") : QLatin1String("method"))
.arg(QLatin1String(signature.left(paren)));
// check the return type first
int typeId = qDBusNameToTypeId(mm.typeName());
if (typeId)
xml += QString(QLatin1String(" <arg type=\"%1\" direction=\"out\"/>\n"))
.arg(QLatin1String(QDBusUtil::typeToSignature( QVariant::Type(typeId) )));
else if (*mm.typeName())
continue; // wasn't a valid type
QList<QByteArray> names = mm.parameterNames();
QList<int> types;
int inputCount = qDBusParametersForMethod(mm, types);
if (inputCount == -1)
continue; // invalid form
if (isSignal && inputCount + 1 != types.count())
continue; // signal with output arguments?
if (isSignal && types.at(inputCount) == QDBusConnectionPrivate::messageMetaType)
continue; // signal with QDBusMessage argument?
int j;
bool isScriptable = mm.attributes() & QMetaMethod::Scriptable;
for (j = 1; j < types.count(); ++j) {
// input parameter for a slot or output for a signal
if (types.at(j) == QDBusConnectionPrivate::messageMetaType) {
isScriptable = true;
continue;
}
QString name;
if (!names.at(j - 1).isEmpty())
name = QString(QLatin1String("name=\"%1\" ")).arg(QLatin1String(names.at(j - 1)));
bool isOutput = isSignal || j > inputCount;
xml += QString(QLatin1String(" <arg %1type=\"%2\" direction=\"%3\"/>\n"))
.arg(name)
.arg(QLatin1String(QDBusUtil::typeToSignature( QVariant::Type(types.at(j)) )))
.arg(isOutput ? QLatin1String("out") : QLatin1String("in"));
}
if (!isScriptable) {
// check if this was added by other means
if (isSignal && (flags & QDBusConnection::ExportAllSignals) != QDBusConnection::ExportAllSignals)
continue;
if (!isSignal && (flags & QDBusConnection::ExportAllSlots) != QDBusConnection::ExportAllSlots)
continue;
}
if (qDBusCheckAsyncTag(mm.tag()))
// add the no-reply annotation
xml += QLatin1String(" <annotation name=\"" ANNOTATION_NO_WAIT "\""
" value=\"true\"/>\n");
retval += xml;
retval += QString(QLatin1String(" </%1>\n"))
.arg(isSignal ? QLatin1String("signal") : QLatin1String("method"));
}
return retval;
}
QString qDBusGenerateMetaObjectXml(QString interface, const QMetaObject *mo, const QMetaObject *base,
int flags)
{
if (interface.isEmpty()) {
// generate the interface name from the meta object
int idx = mo->indexOfClassInfo(QCLASSINFO_DBUS_INTERFACE);
if (idx >= mo->classInfoOffset()) {
interface = QLatin1String(mo->classInfo(idx).value());
} else {
interface = QLatin1String(mo->className());
interface.replace(QLatin1String("::"), QLatin1String("."));
if (interface.startsWith( QLatin1String("QDBus") )) {
interface.prepend( QLatin1String("com.trolltech.QtDBus.") );
} else if (interface.startsWith( QLatin1Char('Q') ) &&
interface.length() >= 2 && interface.at(1).isUpper()) {
// assume it's Qt
interface.prepend( QLatin1String("com.trolltech.Qt.") );
} else if (!QCoreApplication::instance() ||
QCoreApplication::instance()->applicationName().isEmpty()) {
interface.prepend( QLatin1String("local.") );
} else {
interface.prepend(QLatin1Char('.')).prepend( QCoreApplication::instance()->applicationName() );
QStringList domainName =
QCoreApplication::instance()->organizationDomain().split(QLatin1Char('.'),
QString::SkipEmptyParts);
if (domainName.isEmpty())
interface.prepend("local.");
else
foreach (const QString &part, domainName)
interface.prepend(QLatin1Char('.')).prepend(part);
}
}
}
QString xml;
int idx = mo->indexOfClassInfo(QCLASSINFO_DBUS_INTROSPECTION);
if (idx >= mo->classInfoOffset())
return QString::fromUtf8(mo->classInfo(idx).value());
else
xml = generateInterfaceXml(mo, flags, base->methodCount(), base->propertyCount());
if (xml.isEmpty())
return QString(); // don't add an empty interface
return QString(QLatin1String(" <interface name=\"%1\">\n%2 </interface>\n"))
.arg(interface, xml);
}
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