/*************************************************************************
 *
 *  $RCSfile: ZipMounter.java,v $
 *
 *  $Revision: 1.2 $
 *
 *  last change: $Author: toconnor $ $Date: 2002-11-13 17:44:39 $
 *
 *  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): _______________________________________
 *
 *
 ************************************************************************/

package org.openoffice.netbeans.modules.office.utils;

import java.io.*;
import java.util.zip.*;
import java.beans.PropertyVetoException;

import org.openide.filesystems.FileSystem;
import org.openide.filesystems.Repository;

import org.openoffice.netbeans.modules.office.filesystem.OpenOfficeDocFileSystem;

public class ZipMounter
{
    private static ZipMounter mounter = null;

    private ZipMounter() {
    }

    public static ZipMounter getZipMounter() {
        if (mounter == null) {
            synchronized(ZipMounter.class) {
                if (mounter == null)
                    mounter = new ZipMounter();
            }
        }
        return mounter;
    }

    public void mountZipFile(File zipfile)
        throws IOException, PropertyVetoException
    {
        if (zipfile != null) {
            addDocumentToRepository(zipfile, true);
        }
    }

    private FileSystem addDocumentToRepository(File rootFile, boolean writeable)
        throws IOException, PropertyVetoException
    {
        Repository repo = Repository.getDefault();
        OpenOfficeDocFileSystem oofs;
        oofs = (OpenOfficeDocFileSystem)getMountedDocument(rootFile);
        if(oofs != null)
            repo.removeFileSystem(oofs);
        oofs = new OpenOfficeDocFileSystem();
        oofs.setDocument(rootFile);
        repo.addFileSystem(oofs);
        return oofs;
    }

    /** @return FileSystem which has given jar file as its root or
    * null if no such file system could be found in repository */
    private FileSystem getMountedDocument(File rootFile)
    {
        if (rootFile == null)
            return null;
        FileSystem oofs = null;
        try {
            oofs = Repository.getDefault().findFileSystem(
                OpenOfficeDocFileSystem.computeSystemName(rootFile));
        } catch(Exception exp) {
        }
        return oofs;
    }
}
