- * Implements a simple console observer that prints normal text to - * {@code stdout}, errors to {@code stderr} and reads from {@code stdin}. + * Implements a simple console observer that prints normal text to {@code stdout}, errors to + * {@code stderr} and reads from {@code stdin}. *
* @@ -35,126 +35,146 @@ * @version 1.0 */ -public class TextConsole implements IOutputListener, IErrorListener, - ITraceListener, IExceptionListener { - - /** - *Defines the trace level used by this console.
- */ - private Level traceLevel; - - private final SimpleDateFormat ft = new SimpleDateFormat("HH:mm:ss"); - - /** - *- * Creates a new text console and automatically registers it as observer. The trace level is {@link Level#WARNING}. - *
- */ - public TextConsole() { - this(Level.WARNING); - } +public class TextConsole implements IOutputListener, IErrorListener, ITraceListener, + IExceptionListener +{ - /** - *- * Creates a new text console and automatically registers it as observer. - *
- * @param traceLevel trace level used by this text console - */ - public TextConsole(Level traceLevel) { - Console.getInstance().registerOutputListener(this); - Console.getInstance().registerErrorListener(this); - Console.getInstance().registerTraceListener(this); - Console.getInstance().registerExceptionListener(this); - this.traceLevel = traceLevel; - } + /** + *+ * Defines the trace level used by this console. + *
+ */ + private Level traceLevel; - /** - *- * Prints messages to {@code stdout}. - *
- * - * @see ConsoleObserver#outputMsg(java.lang.String) - */ - public void outputMsg(String newMessage) { - System.out.print(newMessage); - } + private final SimpleDateFormat ft = new SimpleDateFormat("HH:mm:ss"); - /** - *- * Prints messages to {@code stderr}. - *
- * - * @see ConsoleObserver#errorMsg(String) - */ - @Override - public void errorMsg(String errMessage) { - System.err.print(errMessage); - } + /** + *+ * Creates a new text console and automatically registers it as observer. The trace level is + * {@link Level#WARNING}. + *
+ */ + public TextConsole() { + this(Level.WARNING); + } - /** - *- * Prints the stacktrace of an exception to {@code stderr}. - *
- * - * @see ConsoleObserver#logException(Exception) - */ - @Override - public void logException(Exception e) { - System.err.println(e.getMessage()); - } + /** + *+ * Creates a new text console and automatically registers it as observer. + *
+ * + * @param traceLevel + * trace level used by this text console + */ + public TextConsole(Level traceLevel) { + Console.getInstance().registerOutputListener(this); + Console.getInstance().registerErrorListener(this); + Console.getInstance().registerTraceListener(this); + Console.getInstance().registerExceptionListener(this); + this.traceLevel = traceLevel; + } - /** - *- * Prints messages to {@code stdout}. These messages are only printed, if - * the console is run in debug mode. - *
- */ - @Override - public void traceMsg(String traceMessage, Level level) { - if (level.intValue()>=traceLevel.intValue()) { - System.out.print("[" + level.toString() + "] [" + ft.format(new Date()) + "] " + traceMessage); - } - } + /** + *+ * Prints messages to {@code stdout}. + *
+ * + * @see ConsoleObserver#outputMsg(java.lang.String) + */ + public void outputMsg(String newMessage) { + System.out.print(newMessage); + } - /** - *- * Starts a new TextConsole. If the text console is started, it can be used - * not only to print message, but also to execute commands by reading - * {@code stdin}. - *
- */ - public void run() { - CommandExecuter exec = CommandExecuter.getInstance(); - while (true) { - System.out.print("> "); - String command = getCommand().trim(); - if (!command.equals("")) { - exec.exec(command); - } - } - } + /** + *+ * Prints messages to {@code stderr}. + *
+ * + * @see ConsoleObserver#errorMsg(String) + */ + @Override + public void errorMsg(String errMessage) { + System.err.print(errMessage); + } - /** - *- * Reads a new command from {@code stdin}. - *
- * - * @return a string with a command - */ - protected String getCommand() { - byte[] buffer = new byte[1024]; - int bytesRead = 0; - String command; - try { - bytesRead = System.in.read(buffer); - } catch (IOException e) { + /** + *
+ * Prints the stacktrace of an exception to {@code stderr} if the log level is more or equally
+ * detailed to Level.FINE. Otherwise, it just prints a line naming the exception
+ * or only the message, if any.
+ *
+ * Prints messages to {@code stdout}. These messages are only printed, if the console is run in + * debug mode. + *
+ */ + @Override + public void traceMsg(String traceMessage, Level level) { + if (level.intValue() >= traceLevel.intValue()) { + System.out.print("[" + level.toString() + "] [" + ft.format(new Date()) + "] " + + traceMessage); + } + } + + /** + *+ * Starts a new TextConsole. If the text console is started, it can be used not only to print + * message, but also to execute commands by reading {@code stdin}. + *
+ */ + public void run() { + CommandExecuter exec = CommandExecuter.getInstance(); + while (true) { + System.out.print("> "); + String command = getCommand().trim(); + if (!command.equals("")) { + exec.exec(command); + } + } + } + + /** + *+ * Reads a new command from {@code stdin}. + *
+ * + * @return a string with a command + */ + protected String getCommand() { + byte[] buffer = new byte[1024]; + int bytesRead = 0; + String command; + try { + bytesRead = System.in.read(buffer); + } + catch (IOException e) { + + } + if (bytesRead == 0) { + command = ""; + } + else { + command = new String(buffer, Charset.defaultCharset()); + } + return command; + } }