| /* |
| * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * This source code is provided to illustrate the usage of a given feature |
| * or technique and has been deliberately simplified. Additional steps |
| * required for a production-quality application, such as security checks, |
| * input validation and proper error handling, might not be present in |
| * this sample code. |
| */ |
| |
| package com.sun.tools.example.debug.tty; |
| |
| import java.util.*; |
| import java.text.MessageFormat; |
| /** |
| * Internationalization (i18n) convenience methods for jdb. |
| * |
| * All program output should flow through these methods, and this is |
| * the only class that should be printing directly or otherwise |
| * accessing System.[out,err]. |
| * |
| * @bug 4348376 |
| * @author Tim Bell |
| */ |
| public class MessageOutput { |
| /** |
| * The resource bundle containing localizable message content. |
| * This is loaded by TTY.main() at start-up |
| */ |
| static ResourceBundle textResources; |
| |
| /** Our message formatter. Allocated once, used many times */ |
| private static MessageFormat messageFormat; |
| |
| /** |
| * Fatal shutdown notification. This is sent to System.err |
| * instead of System.out |
| */ |
| static void fatalError(String messageKey) { |
| System.err.println(); |
| System.err.println(format("Fatal error")); |
| System.err.println(format(messageKey)); |
| Env.shutdown(); |
| } |
| |
| /** |
| * "Format" a string by doing a simple key lookup. |
| */ |
| static String format(String key) { |
| return (textResources.getString(key)); |
| } |
| |
| /** |
| * Fetch and format a message with one string argument. |
| * This is the most common usage. |
| */ |
| static String format(String key, String argument) { |
| return format(key, new Object [] {argument}); |
| } |
| |
| /** |
| * Fetch a string by key lookup and format in the arguments. |
| */ |
| static synchronized String format(String key, Object [] arguments) { |
| if (messageFormat == null) { |
| messageFormat = new MessageFormat (textResources.getString(key)); |
| } else { |
| messageFormat.applyPattern (textResources.getString(key)); |
| } |
| return (messageFormat.format (arguments)); |
| } |
| |
| /** |
| * Print directly to System.out. |
| * Every rule has a few exceptions. |
| * The exceptions to "must use the MessageOutput formatters" are: |
| * VMConnection.dumpStream() |
| * TTY.monitorCommand() |
| * TTY.TTY() (for the '!!' command only) |
| * Commands.java (multiple locations) |
| * These are the only sites that should be calling this |
| * method. |
| */ |
| static void printDirectln(String line) { |
| System.out.println(line); |
| } |
| static void printDirect(String line) { |
| System.out.print(line); |
| } |
| static void printDirect(char c) { |
| System.out.print(c); |
| } |
| |
| /** |
| * Print a newline. |
| * Use this instead of '\n' |
| */ |
| static void println() { |
| System.out.println(); |
| } |
| |
| /** |
| * Format and print a simple string. |
| */ |
| static void print(String key) { |
| System.out.print(format(key)); |
| } |
| /** |
| * Format and print a simple string. |
| */ |
| static void println(String key) { |
| System.out.println(format(key)); |
| } |
| |
| |
| /** |
| * Fetch, format and print a message with one string argument. |
| * This is the most common usage. |
| */ |
| static void print(String key, String argument) { |
| System.out.print(format(key, argument)); |
| } |
| static void println(String key, String argument) { |
| System.out.println(format(key, argument)); |
| } |
| |
| /** |
| * Fetch, format and print a message with an arbitrary |
| * number of message arguments. |
| */ |
| static void println(String key, Object [] arguments) { |
| System.out.println(format(key, arguments)); |
| } |
| |
| /** |
| * Print a newline, followed by the string. |
| */ |
| static void lnprint(String key) { |
| System.out.println(); |
| System.out.print(textResources.getString(key)); |
| } |
| |
| static void lnprint(String key, String argument) { |
| System.out.println(); |
| System.out.print(format(key, argument)); |
| } |
| |
| static void lnprint(String key, Object [] arguments) { |
| System.out.println(); |
| System.out.print(format(key, arguments)); |
| } |
| |
| /** |
| * Print an exception message with a stack trace. |
| */ |
| static void printException(String key, Exception e) { |
| if (key != null) { |
| try { |
| println(key); |
| } catch (MissingResourceException mex) { |
| printDirectln(key); |
| } |
| } |
| System.out.flush(); |
| e.printStackTrace(); |
| } |
| |
| static void printPrompt() { |
| ThreadInfo threadInfo = ThreadInfo.getCurrentThreadInfo(); |
| if (threadInfo == null) { |
| System.out.print |
| (MessageOutput.format("jdb prompt with no current thread")); |
| } else { |
| System.out.print |
| (MessageOutput.format("jdb prompt thread name and current stack frame", |
| new Object [] { |
| threadInfo.getThread().name(), |
| new Integer (threadInfo.getCurrentFrameIndex() + 1)})); |
| } |
| System.out.flush(); |
| } |
| } |