001 /* 002 * Copyright 2005 [ini4j] Development Team 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017 package org.ini4j; 018 019 import java.io.*; 020 import java.util.prefs.*; 021 022 public class IniFile extends IniPreferences 023 { 024 public static enum Mode {RO,WO,RW}; 025 026 private Mode _mode; 027 private File _file; 028 029 public IniFile(File file, Mode mode) throws BackingStoreException 030 { 031 super(new Ini()); 032 _file = file; 033 _mode = mode; 034 035 if ( (_mode == Mode.RO) || ( (_mode != Mode.WO) && _file.exists() ) ) 036 { 037 sync(); 038 } 039 } 040 041 public IniFile(File file) throws BackingStoreException 042 { 043 this(file, Mode.RO); 044 } 045 046 public Mode getMode() 047 { 048 return _mode; 049 } 050 051 public File getFile() 052 { 053 return _file; 054 } 055 056 public void sync() throws BackingStoreException 057 { 058 if ( _mode == Mode.WO ) 059 { 060 throw new BackingStoreException("write only instance"); 061 } 062 063 try 064 { 065 synchronized (lock) 066 { 067 getIni().load(_file.toURL()); 068 } 069 } 070 catch (Exception x) 071 { 072 throw new BackingStoreException(x); 073 } 074 } 075 076 public void flush() throws BackingStoreException 077 { 078 if ( _mode == Mode.RO ) 079 { 080 throw new BackingStoreException("read only instance"); 081 } 082 083 try 084 { 085 synchronized (lock) 086 { 087 getIni().store(new FileWriter(_file)); 088 } 089 } 090 catch (Exception x) 091 { 092 throw new BackingStoreException(x); 093 } 094 } 095 }