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Java > Open Source Codes > edu > rice > cs > drjava > config > FileConfiguration


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33
34 package edu.rice.cs.drjava.config;
35 import java.io.*;
36 import edu.rice.cs.util.FileOps;
37
38 /** A Configuration object that is backed by a file.
39  * @version $Id: FileConfiguration.java 3888 2006-06-15 12:06:50Z rcartwright $
40  */

41 public class FileConfiguration extends SavableConfiguration {
42   
43   public final File file;
44   
45   /** Creates a new Configuration object using the values stored in file f. Any values not specified by f will be
46    * set to defaults from OptionConstants.
47    * @param f Properties file containing customized values
48    */

49   public FileConfiguration(File f) {
50     super(new DefaultOptionMap());
51     file = f.getAbsoluteFile();
52   }
53   
54   /** Calls SavableConfiguration.loadConfiguration, which loads all values from the file, based on the defaults in
55    * OptionConstants.
56    */

57   public void loadConfiguration() throws IOException {
58     loadConfiguration(new BufferedInputStream(new FileInputStream(file)));
59   }
60   
61   /** Saves the current settings to the stored properties file. */
62   public void saveConfiguration() throws IOException {
63     saveConfiguration("DrJava configuration file");
64   }
65   
66   /** Saves the current settings to the stored properties file.
67    * @param header Description of the properties list
68    */

69   public void saveConfiguration(final String JavaDoc header) throws IOException {
70     FileOps.saveFile(new FileOps.DefaultFileSaver(file) {
71       public void saveTo(OutputStream os) throws IOException {
72         saveConfiguration(os,header);
73       }
74       public boolean shouldBackup() {
75         return false;
76       }
77     });
78   }
79 }
80
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