Changeset 250 for trunk/JavaHelperLib/src/de/ugoe/cs/util/console/FileOutputListener.java

Timestamp:

10/10/11 22:15:34 (13 years ago)

Author:

sherbold

Message:

• various changed to de.ugoe.cs.util.Console:
  • changed instantiation method of the instance, i.e., how the Singleton property is guaranteed
  • added method reset() to remove all listeners at once
  • added functions to check is a given listener is registered
• various changes to de.ugoe.cs.util.FileOutputListener?:
  • added null-checks for writer to improve behavior in case of improper usage
  • added method getFilename() to check to which file the listener writes.
• added method setDebug() to de.ugoe.cs.util.TextConsole? to define whether trace stream is displayed or not.

File:

• trunk/JavaHelperLib/src/de/ugoe/cs/util/console/FileOutputListener.java (modified) (3 diffs)

trunk/JavaHelperLib/src/de/ugoe/cs/util/console/FileOutputListener.java

@@ -39 +39 @@
          * </p>
          */
-        FileWriter writer;
+        FileWriter writer = null;
 
         /**
@@ -78 +78 @@
         public void stop() {
                 Console.getInstance().removeOutputListener(this);
-                try {
-                        writer.close();
-                } catch (IOException e) {
-                        Console.printerrln("Failed to close file " + filename + ": "
-                                        + e.getMessage());
+                if( writer!=null ) {
+                        try {
+                                writer.close();
+                                writer = null;
+                        } catch (IOException e) {
+                                Console.printerrln("Failed to close file " + filename + ": "
+                                                + e.getMessage());
+                        }
                 }
         }
@@ -95 +98 @@
         @Override
         public void outputMsg(String newMessage) {
-                try {
-                        writer.write(newMessage);
-                } catch (IOException e) {
-                        if (!failureLogged) {
-                                Console.printerrln("FileOutpustListener for file " + filename
-                                                + " broken: " + e.getMessage());
-                                failureLogged = true;
+                if( writer!=null ) {
+                        try {
+                                writer.write(newMessage);
+                        } catch (IOException e) {
+                                if (!failureLogged) {
+                                        Console.printerrln("FileOutpustListener for file " + filename
+                                                        + " broken: " + e.getMessage());
+                                        failureLogged = true;
+                                }
                         }
                 }
         }
 
+        /**
+         * <p>
+         * Returns the name of the log file used by this listener.
+         * </p>
+         * 
+         * @return name of the log file
+         */
+        public String getFilename() {
+                return filename;
+        }
+
 }