76 
  77         return h;
  78     }
  79 
  80 
  81     /**
  82      * Get a shared FileHistory object for a specified file and path to work directory.
  83      * @param wdFile The path th work directory in which the history file is maintained.
  84      * @param name The name of the file within the work direectory's jtData/
  85      * subdirectory.
  86      * @return the specified FileHistory object
  87      */
  88     public static FileHistory getFileHistory(File wdFile, String name) {
  89         if (cache == null)
  90             cache = new WeakHashMap<>(8);
  91 
  92         if (!WorkDirectory.isWorkDirectory(wdFile))
  93             return null;
  94 
  95         // let's find in the cache work dir corresponding to the path
  96         Iterator it = cache.keySet().iterator();
  97         WorkDirectory wd = null;
  98         while (it.hasNext()) {
  99             WorkDirectory tempWD = ((WorkDirectory)it.next());
 100             if (tempWD.getRoot().equals(wdFile)) {
 101                 wd = tempWD;
 102                 break;
 103             }
 104         }
 105         if (wd != null)
 106             return FileHistory.getFileHistory(wd, name);
 107         else
 108             return null;
 109     }
 110 
 111     /**
 112      * Add a new file to the history.
 113      * The file in the work directory for this history will be updated.
 114      * @param file the file to be added to the history
 115      */
 116     public void add(File file) {
 117         ensureEntriesUpToDate();
 118 
 119         file = file.getAbsoluteFile();

  76 
  77         return h;
  78     }
  79 
  80 
  81     /**
  82      * Get a shared FileHistory object for a specified file and path to work directory.
  83      * @param wdFile The path th work directory in which the history file is maintained.
  84      * @param name The name of the file within the work direectory's jtData/
  85      * subdirectory.
  86      * @return the specified FileHistory object
  87      */
  88     public static FileHistory getFileHistory(File wdFile, String name) {
  89         if (cache == null)
  90             cache = new WeakHashMap<>(8);
  91 
  92         if (!WorkDirectory.isWorkDirectory(wdFile))
  93             return null;
  94 
  95         // let's find in the cache work dir corresponding to the path
  96         Iterator<WorkDirectory> it = cache.keySet().iterator();
  97         WorkDirectory wd = null;
  98         while (it.hasNext()) {
  99             WorkDirectory tempWD = it.next();
 100             if (tempWD.getRoot().equals(wdFile)) {
 101                 wd = tempWD;
 102                 break;
 103             }
 104         }
 105         if (wd != null)
 106             return FileHistory.getFileHistory(wd, name);
 107         else
 108             return null;
 109     }
 110 
 111     /**
 112      * Add a new file to the history.
 113      * The file in the work directory for this history will be updated.
 114      * @param file the file to be added to the history
 115      */
 116     public void add(File file) {
 117         ensureEntriesUpToDate();
 118 
 119         file = file.getAbsoluteFile();