src/main/java/eu/svjatoslav/instantlauncher/Configuration.java

   1 package eu.svjatoslav.instantlauncher;
   2
   3 import java.io.File;
   4 import java.io.FileInputStream;
   5 import java.io.FileNotFoundException;
   6 import java.io.FileOutputStream;
   7 import java.io.IOException;
   8 import java.util.Properties;
   9
  10 public class Configuration {
  11
  12     private static final String KEY_ROOT_DIRECTORY = "KEY_ROOT_DIRECTORY";
  13     private static final String CONFIG_FILE_NAME = ".instantlauncher";
  14     Properties properties = new Properties();
  15
  16     boolean propertiesChanged = false;
  17
  18     public Configuration() throws FileNotFoundException, IOException {
  19         initialize();
  20     }
  21
  22     public File getPropertiesFile() {
  23         return new File(System.getProperty("user.home") + "/" + CONFIG_FILE_NAME);
  24     }
  25
  26     public File getRootDirectory() {
  27
  28         if (properties.containsKey(KEY_ROOT_DIRECTORY)) {
  29             return new File(properties.getProperty(KEY_ROOT_DIRECTORY));
  30         } else {
  31             properties.put(KEY_ROOT_DIRECTORY, System.getProperty("user.home") + "/");
  32             propertiesChanged = true;
  33             return getRootDirectory();
  34         }
  35
  36     }
  37
  38     public void initialize() throws FileNotFoundException, IOException {
  39
  40         loadIfFileExists();
  41
  42         validatePropertiesFile();
  43
  44         if (propertiesChanged) {
  45             saveFile();
  46         }
  47     }
  48
  49     public void loadIfFileExists() throws FileNotFoundException, IOException {
  50         final File propertiesFile = getPropertiesFile();
  51
  52         if (propertiesFile.exists()) {
  53             final FileInputStream inStream = new FileInputStream(propertiesFile);
  54             properties.load(inStream);
  55             inStream.close();
  56         }
  57     }
  58
  59     public void saveFile() throws FileNotFoundException, IOException {
  60         properties.store(new FileOutputStream(getPropertiesFile()), "Instantlauncher configuration file.");
  61     }
  62
  63     public void validatePropertiesFile() {
  64         getRootDirectory();
  65     }
  66
  67 }