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| 1 | +/* | |
| 2 | + * Copyright (c) 2001, 2002, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | +package com.sun.tools.example.debug.tty; | |
| 26 | + | |
| 27 | +import java.util.*; | |
| 28 | +import java.text.MessageFormat; | |
| 29 | +/** | |
| 30 | + * Internationalization (i18n) convenience methods for jdb. | |
| 31 | + * | |
| 32 | + * All program output should flow through these methods, and this is | |
| 33 | + * the only class that should be printing directly or otherwise | |
| 34 | + * accessing System.[out,err]. | |
| 35 | + * | |
| 36 | + * @bug 4348376 | |
| 37 | + * @author Tim Bell | |
| 38 | + */ | |
| 39 | +public class MessageOutput { | |
| 40 | + /** | |
| 41 | + * The resource bundle containing localizable message content. | |
| 42 | + * This is loaded by TTY.main() at start-up | |
| 43 | + */ | |
| 44 | + static ResourceBundle textResources; | |
| 45 | + | |
| 46 | + /** Our message formatter. Allocated once, used many times */ | |
| 47 | + private static MessageFormat messageFormat; | |
| 48 | + | |
| 49 | + /** | |
| 50 | + * Fatal shutdown notification. This is sent to System.err | |
| 51 | + * instead of System.out | |
| 52 | + */ | |
| 53 | + static void fatalError(String messageKey) { | |
| 54 | + System.err.println(); | |
| 55 | + System.err.println(format("Fatal error")); | |
| 56 | + System.err.println(format(messageKey)); | |
| 57 | + Env.shutdown(); | |
| 58 | + } | |
| 59 | + | |
| 60 | + /** | |
| 61 | + * "Format" a string by doing a simple key lookup. | |
| 62 | + */ | |
| 63 | + static String format(String key) { | |
| 64 | + return (textResources.getString(key)); | |
| 65 | + } | |
| 66 | + | |
| 67 | + /** | |
| 68 | + * Fetch and format a message with one string argument. | |
| 69 | + * This is the most common usage. | |
| 70 | + */ | |
| 71 | + static String format(String key, String argument) { | |
| 72 | + return format(key, new Object [] {argument}); | |
| 73 | + } | |
| 74 | + | |
| 75 | + /** | |
| 76 | + * Fetch a string by key lookup and format in the arguments. | |
| 77 | + */ | |
| 78 | + static synchronized String format(String key, Object [] arguments) { | |
| 79 | + if (messageFormat == null) { | |
| 80 | + messageFormat = new MessageFormat (textResources.getString(key)); | |
| 81 | + } else { | |
| 82 | + messageFormat.applyPattern (textResources.getString(key)); | |
| 83 | + } | |
| 84 | + return (messageFormat.format (arguments)); | |
| 85 | + } | |
| 86 | + | |
| 87 | + /** | |
| 88 | + * Print directly to System.out. | |
| 89 | + * Every rule has a few exceptions. | |
| 90 | + * The exceptions to "must use the MessageOutput formatters" are: | |
| 91 | + * VMConnection.dumpStream() | |
| 92 | + * TTY.monitorCommand() | |
| 93 | + * TTY.TTY() (for the '!!' command only) | |
| 94 | + * Commands.java (multiple locations) | |
| 95 | + * These are the only sites that should be calling this | |
| 96 | + * method. | |
| 97 | + */ | |
| 98 | + static void printDirectln(String line) { | |
| 99 | + System.out.println(line); | |
| 100 | + } | |
| 101 | + static void printDirect(String line) { | |
| 102 | + System.out.print(line); | |
| 103 | + } | |
| 104 | + static void printDirect(char c) { | |
| 105 | + System.out.print(c); | |
| 106 | + } | |
| 107 | + | |
| 108 | + /** | |
| 109 | + * Print a newline. | |
| 110 | + * Use this instead of '\n' | |
| 111 | + */ | |
| 112 | + static void println() { | |
| 113 | + System.out.println(); | |
| 114 | + } | |
| 115 | + | |
| 116 | + /** | |
| 117 | + * Format and print a simple string. | |
| 118 | + */ | |
| 119 | + static void print(String key) { | |
| 120 | + System.out.print(format(key)); | |
| 121 | + } | |
| 122 | + /** | |
| 123 | + * Format and print a simple string. | |
| 124 | + */ | |
| 125 | + static void println(String key) { | |
| 126 | + System.out.println(format(key)); | |
| 127 | + } | |
| 128 | + | |
| 129 | + | |
| 130 | + /** | |
| 131 | + * Fetch, format and print a message with one string argument. | |
| 132 | + * This is the most common usage. | |
| 133 | + */ | |
| 134 | + static void print(String key, String argument) { | |
| 135 | + System.out.print(format(key, argument)); | |
| 136 | + } | |
| 137 | + static void println(String key, String argument) { | |
| 138 | + System.out.println(format(key, argument)); | |
| 139 | + } | |
| 140 | + | |
| 141 | + /** | |
| 142 | + * Fetch, format and print a message with an arbitrary | |
| 143 | + * number of message arguments. | |
| 144 | + */ | |
| 145 | + static void println(String key, Object [] arguments) { | |
| 146 | + System.out.println(format(key, arguments)); | |
| 147 | + } | |
| 148 | + | |
| 149 | + /** | |
| 150 | + * Print a newline, followed by the string. | |
| 151 | + */ | |
| 152 | + static void lnprint(String key) { | |
| 153 | + System.out.println(); | |
| 154 | + System.out.print(textResources.getString(key)); | |
| 155 | + } | |
| 156 | + | |
| 157 | + static void lnprint(String key, String argument) { | |
| 158 | + System.out.println(); | |
| 159 | + System.out.print(format(key, argument)); | |
| 160 | + } | |
| 161 | + | |
| 162 | + static void lnprint(String key, Object [] arguments) { | |
| 163 | + System.out.println(); | |
| 164 | + System.out.print(format(key, arguments)); | |
| 165 | + } | |
| 166 | + | |
| 167 | + /** | |
| 168 | + * Print an exception message with a stack trace. | |
| 169 | + */ | |
| 170 | + static void printException(String key, Exception e) { | |
| 171 | + if (key != null) { | |
| 172 | + try { | |
| 173 | + println(key); | |
| 174 | + } catch (MissingResourceException mex) { | |
| 175 | + printDirectln(key); | |
| 176 | + } | |
| 177 | + } | |
| 178 | + System.out.flush(); | |
| 179 | + e.printStackTrace(); | |
| 180 | + } | |
| 181 | + | |
| 182 | + static void printPrompt() { | |
| 183 | + ThreadInfo threadInfo = ThreadInfo.getCurrentThreadInfo(); | |
| 184 | + if (threadInfo == null) { | |
| 185 | + System.out.print | |
| 186 | + (MessageOutput.format("jdb prompt with no current thread")); | |
| 187 | + } else { | |
| 188 | + System.out.print | |
| 189 | + (MessageOutput.format("jdb prompt thread name and current stack frame", | |
| 190 | + new Object [] { | |
| 191 | + threadInfo.getThread().name(), | |
| 192 | + new Integer (threadInfo.getCurrentFrameIndex() + 1)})); | |
| 193 | + } | |
| 194 | + System.out.flush(); | |
| 195 | + } | |
| 196 | +} | |