/*

  * Copyright 2005,2009 Ivan SZKIBA

  *

  * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.ini4j;

 import java.io.File;

 import java.io.FileWriter;

 import java.util.prefs.BackingStoreException;

 public class IniFile extends IniPreferences

 {

     public static enum Mode

     {

         RO,

         WO,

         RW

     }

     private final File _file;

     private final Mode _mode;

     public IniFile(File file) throws BackingStoreException

     {

         this(file, Mode.RO);

     }

     public IniFile(File file, Mode mode) throws BackingStoreException

     {

         super(new Ini());

         _file = file;

         _mode = mode;

         if ((_mode == Mode.RO) || ((_mode != Mode.WO) && _file.exists()))

         {

             sync();

         }

     }

     public File getFile()

     {

         return _file;

     }

     public Mode getMode()

     {

         return _mode;

     }

     @Override public void flush() throws BackingStoreException

     {

         if (_mode == Mode.RO)

         {

             throw new BackingStoreException("read only instance");

         }

         try

         {

             synchronized (lock)

             {

                 FileWriter writer = new FileWriter(_file);

                 try

                 {

                     getIni().store(writer);

                 }

                 finally

                 {

                     writer.close();

                 }

             }

         }

         catch (Exception x)

         {

             throw new BackingStoreException(x);

         }

     }

     @Override public void sync() throws BackingStoreException

     {

         if (_mode == Mode.WO)

         {

             throw new BackingStoreException("write only instance");

         }

         try

         {

             synchronized (lock)

             {

                 getIni().load(_file.toURI().toURL());

             }

         }

         catch (Exception x)

         {

             throw new BackingStoreException(x);

         }

     }

 }