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/*
* Copyright (c) 2001, 2002, 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();
}
}
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