/*************************************************************************
 *
 *  $RCSfile: pkgprovider.cxx,v $
 *
 *  $Revision: 1.1 $
 *
 *  last change: $Author: kso $ $Date: 2000-11-17 14:41:33 $
 *
 *  The Contents of this file are made available subject to the terms of
 *  either of the following licenses
 *
 *         - GNU Lesser General Public License Version 2.1
 *         - Sun Industry Standards Source License Version 1.1
 *
 *  Sun Microsystems Inc., October, 2000
 *
 *  GNU Lesser General Public License Version 2.1
 *  =============================================
 *  Copyright 2000 by Sun Microsystems, Inc.
 *  901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License version 2.1, as published by the Free Software Foundation.
 *
 *  This library 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *  MA  02111-1307  USA
 *
 *
 *  Sun Industry Standards Source License Version 1.1
 *  =================================================
 *  The contents of this file are subject to the Sun Industry Standards
 *  Source License Version 1.1 (the "License"); You may not use this file
 *  except in compliance with the License. You may obtain a copy of the
 *  License at http://www.openoffice.org/license.html.
 *
 *  Software provided under this License is provided on an "AS IS" basis,
 *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
 *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
 *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
 *  See the License for the specific provisions governing your rights and
 *  obligations concerning the Software.
 *
 *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
 *
 *  Copyright: 2000 by Sun Microsystems, Inc.
 *
 *  All Rights Reserved.
 *
 *  Contributor(s): Kai Sommerfeld ( kso@sun.com )
 *
 *
 ************************************************************************/

/**************************************************************************
                                TODO
 **************************************************************************

 *************************************************************************/

#ifndef _VOS_DIAGNOSE_HXX_
#include <vos/diagnose.hxx>
#endif
#ifndef _UCBHELPER_CONTENTIDENTIFIER_HXX
#include <ucbhelper/contentidentifier.hxx>
#endif

#ifndef _PKGPROVIDER_HXX
#include "pkgprovider.hxx"
#endif
#ifndef _PKGCONTENT_HXX
#include "pkgcontent.hxx"
#endif
#ifndef _PKGURI_HXX
#include "pkguri.hxx"
#endif

using namespace com::sun::star::lang;
using namespace com::sun::star::ucb;
using namespace com::sun::star::uno;
using namespace rtl;

using namespace package_ucp;

//=========================================================================
//=========================================================================
//
// ContentProvider Implementation.
//
//=========================================================================
//=========================================================================

ContentProvider::ContentProvider(
                            const Reference< XMultiServiceFactory >& rSMgr )
: ::ucb::ContentProviderImplHelper( rSMgr )
{
}

//=========================================================================
// virtual
ContentProvider::~ContentProvider()
{
}

//=========================================================================
//
// XInterface methods.
//
//=========================================================================

// @@@ Add own interfaces.
XINTERFACE_IMPL_3( ContentProvider,
                   XTypeProvider,
                   XServiceInfo,
                   XContentProvider );

//=========================================================================
//
// XTypeProvider methods.
//
//=========================================================================

// @@@ Add own interfaces.
XTYPEPROVIDER_IMPL_3( ContentProvider,
                         XTypeProvider,
                         XServiceInfo,
                         XContentProvider );

//=========================================================================
//
// XServiceInfo methods.
//
//=========================================================================

XSERVICEINFO_IMPL_1( ContentProvider,
                     OUString::createFromAscii(
                             "PackageContentProvider" ),
                     OUString::createFromAscii(
                             PACKAGE_CONTENT_PROVIDER_SERVICE_NAME ) );

//=========================================================================
//
// Service factory implementation.
//
//=========================================================================

ONE_INSTANCE_SERVICE_FACTORY_IMPL( ContentProvider );

//=========================================================================
//
// XContentProvider methods.
//
//=========================================================================

// virtual
Reference< XContent > SAL_CALL ContentProvider::queryContent(
                        const Reference< XContentIdentifier >& Identifier )
    throw( IllegalIdentifierException, RuntimeException )
{
    vos::OGuard aGuard( m_aMutex );

    // Check URL scheme...

    OUString aScheme( OUString::createFromAscii( PACKAGE_URL_SCHEME ) );
    if ( !Identifier->getContentProviderScheme().equalsIgnoreCase( aScheme ) )
        throw IllegalIdentifierException();

    // Normalize URL. Internally ids have no trailing slash. However,
    // the client may append a slash to indicate that he wants a folder
    // object, not a stream. Content::create below will fail, in case
    // the referenced resource is a stream.

    Reference< XContentIdentifier > xId = Identifier;
    OUString aURL = xId->getContentIdentifier();
    sal_Int32 nLastSlash = aURL.lastIndexOf( '/' );
    if ( ( nLastSlash + 1 ) == aURL.getLength() )
    {
        // Remove trailing slash and create new identifier.
        aURL = aURL.copy( 0, nLastSlash );
        xId = new ::ucb::ContentIdentifier( m_xSMgr, aURL );
    }

    // Check, if a content with given id already exists...
    Reference< XContent > xContent = queryExistingContent( xId ).getBodyPtr();
    if ( xContent.is() )
        return xContent;

    // Create a new content. Note that the content will insert itself
    // into providers content list by calling addContent(...) from it's ctor.

    xContent = Content::create( m_xSMgr, this, Identifier ); // not xId!!!

    if ( xContent.is() && !xContent->getIdentifier().is() )
        throw IllegalIdentifierException();

    return xContent;
}