1 files changed, 352 insertions, 0 deletions

diff --git a/qmake/tools/qcomponentfactory.cpp b/qmake/tools/qcomponentfactory.cpp
new file mode 100644
index 0000000..8ea81a8
--- a/dev/null
+++ b/qmake/tools/qcomponentfactory.cpp
@@ -0,0 +1,352 @@
+/****************************************************************************
+** $Id$
+**
+** Implementation of the QComponentFactory class
+**
+** Created : 990101
+**
+** Copyright (C) 1992-2002 Trolltech AS.  All rights reserved.
+**
+** This file is part of the tools module of the Qt GUI Toolkit.
+**
+** This file may be distributed under the terms of the Q Public License
+** as defined by Trolltech AS of Norway and appearing in the file
+** LICENSE.QPL included in the packaging of this file.
+**
+** This file may be distributed and/or modified under the terms of the
+** GNU General Public License version 2 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.
+**
+** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
+** licenses may use this file in accordance with the Qt Commercial License
+** Agreement provided with the Software.
+**
+** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+**
+** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
+**   information about Qt Commercial License Agreements.
+** See http://www.trolltech.com/qpl/ for QPL licensing information.
+** See http://www.trolltech.com/gpl/ for GPL licensing information.
+**
+** Contact info@trolltech.com if any conditions of this licensing are
+** not clear to you.
+**
+**********************************************************************/
+
+#include "qcomponentfactory_p.h"
+
+#ifndef QT_NO_COMPONENT
+#include "qsettings.h"
+#include <private/qcomlibrary_p.h>
+#include "qdir.h"
+#include "qapplication.h"
+
+/*!
+  \class QComponentFactory qcomponentfactory.h
+  \brief The QComponentFactory class provides static functions to create and register components.
+
+    \internal
+
+  The static convenience functions can be used both by applications to instantiate components,
+  and by component servers to register components.
+
+  The createInstance() function provides a pointer to an interface implemented in a specific
+  component if the component requested has been installed properly and implements the interface.
+
+  Use registerServer() to load a component server and register its components, and unregisterServer()
+  to unregister the components. The component exported by the component server has to implement the
+  QComponentRegistrationInterface.
+
+  The static functions registerComponent() and unregisterComponent() register and unregister a single
+  component in the system component registry, and should be used when implementing the
+  \link QComponentRegistrationInterface::registerComponents() registerCompontents() \endlink and
+  \link QComponentRegistrationInterface::unregisterComponents() unregisterCompontents() \endlink functions
+  in the QComponentRegistrationInterface.
+
+  A component is registered using a UUID, but can additionally be registered with a name, version and
+  description. A component registered with a name and a version can be instantiated by client applications
+  using the name and specific version number, or the highest available version number for that component by
+  just using the name. A component that is registered calling
+
+  \code
+  QComponentFactory::registerComponent( QUuid(...), filename, "MyProgram.Component", 1 );
+  \endcode
+
+  can be instantiated calling either:
+
+  \code
+  QComponentFactory::createInstance( QUuid(...), IID_XYZ, (QUnknownInterface**)&iface );
+  \endcode
+  or
+  \code
+  QComponentFactory::createInstance( "MyProgram.Component", IID_XYZ, (QUnknownInterface**)&iface );
+  \endcode
+  or
+  \code
+  QComponentFactory::createInstance( "MyProgram.Component.1", IID_XYZ, (QUnknownInterface**)&iface );
+  \endcode
+
+  The first and the last way will always instantiate exactly the component registered above, while
+  the second call might also return a later version of the same component. This allows smoother upgrading
+  of components, and is easier to use in application source code, but should only be used when new versions
+  of the component are guaranteed to work with the application.
+
+  The component name can be anything, but should be unique on the system the component is being
+  installed on. A common naming convention for components is \e application.component.
+
+  \sa QComponentRegistrationInterface QComponentFactoryInterface
+*/
+
+
+static QPtrList<QComLibrary> *libraries = 0;
+
+static void cleanup()
+{
+    delete libraries;
+    libraries = 0;
+}
+
+static QPtrList<QComLibrary> *liblist()
+{
+    if ( !libraries ) {
+        libraries = new QPtrList<QComLibrary>();
+        libraries->setAutoDelete( TRUE );
+        qAddPostRoutine( cleanup );
+    }
+    return libraries;
+}
+
+/*!
+  Searches for the component identifier \a cid in the system component registry,
+  loads the corresponding component server and queries for the interface \a iid.
+  \a iface is set to the resulting interface pointer. \a cid can either be the
+  UUID or the name of the component.
+
+  The parameter \a outer is a pointer to the outer interface used
+  for containment and aggregation and is propagated to the \link
+  QComponentFactoryInterface::createInstance() createInstance() \endlink
+  implementation of the QComponentFactoryInterface in the component server if
+  provided.
+
+  The function returns QS_OK if the interface was successfully instantiated, QE_NOINTERFACE if
+  the component does not provide an interface \a iid, or QE_NOCOMPONENT if there was
+  an error loading the component.
+
+  Example:
+  \code
+  QInterfacePtr<MyInterface> iface;
+  if ( QComponentFactory::createInstance( IID_MyInterface, CID_MyComponent, (QUnknownInterface**)&iface ) == QS_OK )
+      iface->doSomething();
+      ...
+  }
+  \endcode
+*/
+QRESULT QComponentFactory::createInstance( const QString &cid, const QUuid &iid, QUnknownInterface** iface, QUnknownInterface *outer )
+{
+    QSettings settings;
+    settings.insertSearchPath( QSettings::Windows, "/Classes" );
+    bool ok = FALSE;
+    QString cidStr = cid;
+    QRESULT res = QE_NOCOMPONENT;
+
+    QUuid uuid( cidStr ); // try to parse, and resolve CLSID if necessary
+    if ( uuid.isNull() ) {
+        uuid = settings.readEntry( "/" + cid + "/CLSID/Default", QString::null, &ok );
+        cidStr = uuid.toString().upper();
+    }
+
+    if ( cidStr.isEmpty() )
+        return res;
+
+    QString file = settings.readEntry( "/CLSID/" + cidStr + "/InprocServer32/Default", QString::null, &ok );
+    if ( !ok )
+        return res;
+
+    QComLibrary *library = new QComLibrary( file );
+    library->setAutoUnload( FALSE );
+
+    QComponentFactoryInterface *cfIface =0;
+    library->queryInterface( IID_QComponentFactory, (QUnknownInterface**)&cfIface );
+
+    if ( cfIface ) {
+        res = cfIface->createInstance( uuid, iid, iface, outer );
+        cfIface->release();
+    } else {
+        res = library->queryInterface( iid, iface );
+    }
+    QLibraryInterface *libiface = 0;
+    if ( library->queryInterface( IID_QLibrary, (QUnknownInterface**)&libiface ) != QS_OK || !qApp ) {
+        delete library; // only deletes the object, thanks to QLibrary::Manual
+    } else {
+        libiface->release();
+        library->setAutoUnload( TRUE );
+        liblist()->prepend( library );
+    }
+    return res;
+}
+
+/*!
+  Loads the shared library \a filename and queries for a
+  QComponentRegistrationInterface. If the library implements this interface,
+  the \link QComponentRegistrationInterface::registerComponents()
+  registerComponents() \endlink function is called.
+
+  Returns TRUE if the interface is found and successfully called,
+  otherwise returns FALSE.
+*/
+QRESULT QComponentFactory::registerServer( const QString &filename )
+{
+    QComLibrary lib( filename );
+    lib.load();
+    QComponentRegistrationInterface *iface = 0;
+    QRESULT res = lib.queryInterface( IID_QComponentRegistration, (QUnknownInterface**)&iface );
+    if ( res != QS_OK )
+        return res;
+    QDir dir( filename );
+    bool ok = iface->registerComponents( dir.absPath() );
+    iface->release();
+    return ok ? QS_OK : QS_FALSE;
+}
+
+/*!
+  Loads the shared library \a filename and queries for a
+  QComponentRegistrationInterface. If the library implements this interface,
+  the \link QComponentRegistrationInterface::unregisterComponents()
+  unregisterComponents() \endlink function is called.
+
+  Returns TRUE if the interface is found and successfully unregistered,
+  otherwise returns FALSE.
+*/
+QRESULT QComponentFactory::unregisterServer( const QString &filename )
+{
+    QComLibrary lib( filename );
+    lib.load();
+    QComponentRegistrationInterface *iface = 0;
+    QRESULT res = lib.queryInterface( IID_QComponentRegistration, (QUnknownInterface**)&iface );
+    if ( res != QS_OK )
+        return res;
+    bool ok = iface->unregisterComponents();
+    iface->release();
+    return ok ? QS_OK : QS_FALSE;
+}
+
+/*!
+  Registers the component with id \a cid in the system component registry and
+  returns TRUE if the component was registerd successfully, otherwise returns
+  FALSE. The component is provided by the component server at \a filepath and
+  registered with an optional \a name, \a version and \a description.
+
+  This function does nothing and returns FALSE if a component with an identical
+  \a cid does already exist on the system.
+
+  A component that has been registered with a \a name can be created using both the
+  \a cid and the \a name value using createInstance().
+
+  Call this function for each component in an implementation of
+  \link QComponentRegistrationInterface::registerComponents() registerComponents() \endlink.
+
+  \sa unregisterComponent(), registerServer(), createInstance()
+*/
+bool QComponentFactory::registerComponent( const QUuid &cid, const QString &filepath, const QString &name, int version, const QString &description )
+{
+    bool ok = FALSE;
+    QSettings settings;
+    settings.insertSearchPath( QSettings::Windows, "/Classes" );
+
+    QString cidStr = cid.toString().upper();
+    settings.readEntry( "/CLSID/" + cidStr + "/InprocServer32/Default", QString::null, &ok );
+    if ( ok ) // don't overwrite existing component
+        return FALSE;
+
+    ok = settings.writeEntry( "/CLSID/" + cidStr + "/InprocServer32/Default", filepath );
+    if ( ok && !!description )
+        settings.writeEntry( "/CLSID/" + cidStr + "/Default", description );
+
+    // register the human readable part
+    if ( ok && !!name ) {
+        QString vName = version ? name + "." + QString::number( version ) : name;
+        settings.writeEntry( "/CLSID/" + cidStr + "/ProgID/Default", vName );
+        ok = settings.writeEntry( "/" + vName + "/CLSID/Default", cidStr );
+        if ( ok && !!description )
+            settings.writeEntry( "/" + vName + "/Default", description );
+
+        if ( ok && version ) {
+            settings.writeEntry( "/CLSID/" + cidStr + "/VersionIndependentProgID/Default", name );
+            QString curVer = settings.readEntry( "/" + name + "/CurVer/Default" );
+            if ( !curVer || curVer < vName ) { // no previous, or a lesser version installed
+                settings.writeEntry( "/" + name + "/CurVer/Default", vName );
+                ok = settings.writeEntry( "/" + name + "/CLSID/Default", cidStr );
+                if ( ok && !!description )
+                    settings.writeEntry( "/" + name + "/Default", description );
+            }
+        }
+    }
+
+    return ok;
+}
+
+/*!
+  Unregisters the component with id \a cid from the system component registry and returns
+  TRUE if the component was unregistered successfully, otherwise returns FALSE.
+
+  Call this function for each component in an implementation of
+  \link QComponentRegistrationInterface::unregisterComponents() unregisterComponents() \endlink.
+
+  \sa registerComponent(), unregisterServer()
+*/
+bool QComponentFactory::unregisterComponent( const QUuid &cid )
+{
+    QSettings settings;
+    bool ok = FALSE;
+    settings.insertSearchPath( QSettings::Windows, "/Classes" );
+
+    QString cidStr = cid.toString().upper();
+    if ( cidStr.isEmpty() )
+        return FALSE;
+
+    // unregister the human readable part
+    QString vName = settings.readEntry( "/CLSID/" + cidStr + "/ProgID/Default", QString::null, &ok );
+    if ( ok ) {
+        QString name = settings.readEntry( "/CLSID/" + cidStr + "/VersionIndependentProgID/Default", QString::null );
+        if ( !!name && settings.readEntry( "/" + name + "/CurVer/Default" ) == vName ) {
+            // unregistering the current version -> change CurVer to previous version
+            QString version = vName.right( vName.length() - name.length() - 1 );
+            QString newVerName;
+            QString newCidStr;
+            if ( version.find( '.' ) == -1 ) {
+                int ver = version.toInt();
+                // see if a lesser version is installed, and make that the CurVer
+                while ( ver-- ) {
+                    newVerName = name + "." + QString::number( ver );
+                    newCidStr = settings.readEntry( "/" + newVerName + "/CLSID/Default" );
+                    if ( !!newCidStr )
+                        break;
+                }
+            } else {
+                // oh well...
+            }
+            if ( !!newCidStr ) {
+                settings.writeEntry( "/" + name + "/CurVer/Default", newVerName );
+                settings.writeEntry( "/" + name + "/CLSID/Default", newCidStr );
+            } else {
+                settings.removeEntry( "/" + name + "/CurVer/Default" );
+                settings.removeEntry( "/" + name + "/CLSID/Default" );
+                settings.removeEntry( "/" + name + "/Default" );
+            }
+        }
+
+        settings.removeEntry( "/" + vName + "/CLSID/Default" );
+        settings.removeEntry( "/" + vName + "/Default" );
+    }
+
+    settings.removeEntry( "/CLSID/" + cidStr + "/VersionIndependentProgID/Default" );
+    settings.removeEntry( "/CLSID/" + cidStr + "/ProgID/Default" );
+    settings.removeEntry( "/CLSID/" + cidStr + "/InprocServer32/Default" );
+    ok = settings.removeEntry( "/CLSID/" + cidStr + "/Default" );
+
+    return ok;
+}
+
+#endif // QT_NO_COMPONENT