/*
* Copyright (c) 2007, 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.
*/
package sun.launcher;
/*
*
* <p><b>This is NOT part of any API supported by Sun Microsystems.
* If you write code that depends on this, you do so at your own
* risk. This code and its internal interfaces are subject to change
* or deletion without notice.</b>
*
*/
/**
* A utility package for the java(1), javaw(1) launchers.
*/
import java.io.File;
import java.io.PrintStream;
import java.util.ResourceBundle;
import java.text.MessageFormat;
public class LauncherHelp {
private static final String defaultBundleName = "sun.launcher.resources.launcher";
private static ResourceBundle javarb = ResourceBundle.getBundle(defaultBundleName);
private static StringBuilder outBuf = new StringBuilder();
/** Creates a new instance of LauncherHelp, keep it a singleton */
private LauncherHelp(){}
/**
* A private helper method to get a localized message and also
* apply any arguments that we might pass.
*/
private static String getLocalizedMessage(String key, Object... args) {
String msg = javarb.getString(key);
return (args != null) ? MessageFormat.format(msg, args) : msg;
}
/**
* The java -help message is split into 3 parts, an invariant, followed
* by a set of platform dependent variant messages, finally an invariant
* set of lines.
* This method initializes the help message for the first time, and also
* assembles the invariant header part of the message.
*/
static void initHelpMessage(String progname) {
outBuf = outBuf.append(getLocalizedMessage("java.launcher.opt.header", (progname == null) ? "java" : progname ));
outBuf = outBuf.append(getLocalizedMessage("java.launcher.opt.datamodel", 32));
outBuf = outBuf.append(getLocalizedMessage("java.launcher.opt.datamodel", 64));
}
/**
* Appends the vm selection messages to the header, already created.
* initHelpSystem must already be called.
*/
static void appendVmSelectMessage(String vm1, String vm2) {
outBuf = outBuf.append(getLocalizedMessage("java.launcher.opt.vmselect", vm1, vm2));
}
/**
* Appends the vm synoym message to the header, already created.
* initHelpSystem must be called before using this method.
*/
static void appendVmSynonymMessage(String vm1, String vm2) {
outBuf = outBuf.append(getLocalizedMessage("java.launcher.opt.hotspot", vm1, vm2));
}
/**
* Appends the vm Ergo message to the header, already created.
* initHelpSystem must be called before using this method.
*/
static void appendVmErgoMessage(boolean isServerClass, String vm) {
outBuf = outBuf.append(getLocalizedMessage("java.launcher.ergo.message1", vm));
outBuf = (isServerClass)
? outBuf.append(",\n" + getLocalizedMessage("java.launcher.ergo.message2") + "\n\n")
: outBuf.append(".\n\n");
}
/**
* Appends the last invariant part to the previously created messages,
* and finishes up the printing to the desired output stream.
* initHelpSystem must be called before using this method.
*/
static void printHelpMessage(boolean printToStderr) {
PrintStream ostream = (printToStderr) ? System.err : System.out;
outBuf = outBuf.append(getLocalizedMessage("java.launcher.opt.footer", File.pathSeparator));
ostream.println(outBuf.toString());
}
/**
* Prints the Xusage text to the desired output stream.
*/
static void printXUsageMessage(boolean printToStderr) {
PrintStream ostream = (printToStderr) ? System.err : System.out;
ostream.println(getLocalizedMessage("java.launcher.X.usage", File.pathSeparator));
}
/* Test code */
public static void main(String[] args) {
initHelpMessage("java");
appendVmSelectMessage("-client", "client");
appendVmSelectMessage("-server", "server");
appendVmSynonymMessage("-hotspot", "client");
appendVmErgoMessage(true, "server");
printHelpMessage(true);
System.err.println("------------------------------------");
printXUsageMessage(true);
}
}