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	/*
	* Copyright (c) 1996, 2013, 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.tools.serialver;

	import java.io.*;
	import java.awt.*;
	import java.applet.*;
	import java.io.ObjectStreamClass;
	import java.util.Properties;
	import java.text.MessageFormat;
	import java.util.ResourceBundle;
	import java.util.MissingResourceException;
	import java.net.URLClassLoader;
	import java.net.URL;
	import java.net.MalformedURLException;
	import java.util.StringTokenizer;
	import sun.net.www.ParseUtil;

	public class SerialVer extends Applet {
	GridBagLayout gb;
	TextField classname_t;
	Button show_b;
	TextField serialversion_t;
	Label footer_l;

	private static final long serialVersionUID = 7666909783837760853L;

	public synchronized void init() {
	gb = new GridBagLayout();
	setLayout(gb);

	GridBagConstraints c = new GridBagConstraints();
	c.fill = GridBagConstraints.BOTH;

	Label l1 = new Label(Res.getText("FullClassName"));
	l1.setAlignment(Label.RIGHT);
	gb.setConstraints(l1, c);
	add(l1);

	classname_t = new TextField(20);
	c.gridwidth = GridBagConstraints.RELATIVE;
	c.weightx = 1.0;
	gb.setConstraints(classname_t, c);
	add(classname_t);

	show_b = new Button(Res.getText("Show"));
	c.gridwidth = GridBagConstraints.REMAINDER;
	c.weightx = 0.0; /* Don't grow the button */
	gb.setConstraints(show_b, c);
	add(show_b);

	Label l2 = new Label(Res.getText("SerialVersion"));
	l2.setAlignment(Label.RIGHT);
	c.gridwidth = 1;
	gb.setConstraints(l2, c);
	add(l2);

	serialversion_t = new TextField(50);
	serialversion_t.setEditable(false);
	c.gridwidth = GridBagConstraints.REMAINDER;
	gb.setConstraints(serialversion_t, c);
	add(serialversion_t);

	footer_l = new Label();
	c.gridwidth = GridBagConstraints.REMAINDER;
	gb.setConstraints(footer_l, c);
	add(footer_l);

	/* Give the focus to the type-in area */
	classname_t.requestFocus();
	}

	public void start() {
	/* Give the focus to the type-in area */
	classname_t.requestFocus();
	}

	@SuppressWarnings("deprecation")
	public boolean action(Event ev, Object obj) {
	if (ev.target == classname_t) {
	show((String)ev.arg);
	return true;
	} else if (ev.target == show_b) {
	show(classname_t.getText());
	return true;
	}
	return false;
	}


	@SuppressWarnings("deprecation")
	public boolean handleEvent(Event ev) {
	boolean rc = super.handleEvent(ev);
	return rc;
	}

	/**
	* Lookup the specified classname and display it.
	*/
	void show(String classname) {
	try {
	footer_l.setText(""); // Clear the message
	serialversion_t.setText(""); // clear the last value

	if (classname.equals("")) {
	return;
	}

	String s = serialSyntax(classname);
	if (s != null) {
	serialversion_t.setText(s);
	} else {
	footer_l.setText(Res.getText("NotSerializable", classname));
	}
	} catch (ClassNotFoundException cnf) {
	footer_l.setText(Res.getText("ClassNotFound", classname));
	}
	}

	/*
	* A class loader that will load from the CLASSPATH environment
	* variable set by the user.
	*/
	static URLClassLoader loader = null;

	/*
	* Create a URL class loader that will load classes from the
	* specified classpath.
	*/
	static void initializeLoader(String cp)
	throws MalformedURLException, IOException {
	URL[] urls;
	StringTokenizer st = new StringTokenizer(cp, File.pathSeparator);
	int count = st.countTokens();
	urls = new URL[count];
	for (int i = 0; i < count; i++) {
	urls[i] = ParseUtil.fileToEncodedURL(
	new File(new File(st.nextToken()).getCanonicalPath()));
	}
	loader = new URLClassLoader(urls);
	}

	/*
	* From the classname find the serialVersionUID string formatted
	* for to be copied to a java class.
	*/
	static String serialSyntax(String classname) throws ClassNotFoundException {
	String ret = null;
	boolean classFound = false;

	// If using old style of qualifyling inner classes with '$'s.
	if (classname.indexOf('$') != -1) {
	ret = resolveClass(classname);
	} else {
	/* Try to resolve the fully qualified name and if that fails, start
	* replacing the '.'s with '$'s starting from the last '.', until
	* the class is resolved.
	*/
	try {
	ret = resolveClass(classname);
	classFound = true;
	} catch (ClassNotFoundException e) {
	/* Class not found so far */
	}
	if (!classFound) {
	StringBuffer workBuffer = new StringBuffer(classname);
	String workName = workBuffer.toString();
	int i;
	while ((i = workName.lastIndexOf('.')) != -1 && !classFound) {
	workBuffer.setCharAt(i, '$');
	try {
	workName = workBuffer.toString();
	ret = resolveClass(workName);
	classFound = true;
	} catch (ClassNotFoundException e) {
	/* Continue searching */
	}
	}
	}
	if (!classFound) {
	throw new ClassNotFoundException();
	}
	}
	return ret;
	}

	static String resolveClass(String classname) throws ClassNotFoundException {
	Class<?> cl = Class.forName(classname, false, loader);
	ObjectStreamClass desc = ObjectStreamClass.lookup(cl);
	if (desc != null) {
	return " private static final long serialVersionUID = " +
	desc.getSerialVersionUID() + "L;";
	} else {
	return null;
	}
	}

	@SuppressWarnings("deprecation")
	private static void showWindow(Window w) {
	w.show();
	}

	public static void main(String[] args) {
	boolean show = false;
	String envcp = null;
	int i = 0;

	if (args.length == 0) {
	usage();
	System.exit(1);
	}

	for (i = 0; i < args.length; i++) {
	if (args[i].equals("-show")) {
	show = true;
	} else if (args[i].equals("-classpath")) {
	if ((i+1 == args.length) \|\| args[i+1].startsWith("-")) {
	System.err.println(Res.getText("error.missing.classpath"));
	usage();
	System.exit(1);
	}
	envcp = new String(args[i+1]);
	i++;
	} else if (args[i].startsWith("-")) {
	System.err.println(Res.getText("invalid.flag", args[i]));
	usage();
	System.exit(1);
	} else {
	break; // drop into processing class names
	}
	}


	/*
	* Get user's CLASSPATH environment variable, if the -classpath option
	* is not defined, and make a loader that can read from that path.
	*/
	if (envcp == null) {
	envcp = System.getProperty("env.class.path");
	/*
	* If environment variable not set, add current directory to path.
	*/
	if (envcp == null) {
	envcp = ".";
	}
	}

	try {
	initializeLoader(envcp);
	} catch (MalformedURLException mue) {
	System.err.println(Res.getText("error.parsing.classpath", envcp));
	System.exit(2);
	} catch (IOException ioe) {
	System.err.println(Res.getText("error.parsing.classpath", envcp));
	System.exit(3);
	}

	if (!show) {
	/*
	* Check if there are any class names specified, if it is not a
	* invocation with the -show option.
	*/
	if (i == args.length) {
	usage();
	System.exit(1);
	}

	/*
	* The rest of the parameters are classnames.
	*/
	boolean exitFlag = false;
	for (i = i; i < args.length; i++ ) {
	try {
	String syntax = serialSyntax(args[i]);
	if (syntax != null)
	System.out.println(args[i] + ":" + syntax);
	else {
	System.err.println(Res.getText("NotSerializable",
	args[i]));
	exitFlag = true;
	}
	} catch (ClassNotFoundException cnf) {
	System.err.println(Res.getText("ClassNotFound", args[i]));
	exitFlag = true;
	}
	}
	if (exitFlag) {
	System.exit(1);
	}
	} else {
	if (i < args.length) {
	System.err.println(Res.getText("ignoring.classes"));
	System.exit(1);
	}
	Frame f = new SerialVerFrame();
	// f.setLayout(new FlowLayout());
	SerialVer sv = new SerialVer();
	sv.init();

	f.add("Center", sv);
	f.pack();
	showWindow(f);
	}
	}


	/**
	* Usage
	*/
	public static void usage() {
	System.err.println(Res.getText("usage"));
	}

	}

	/**
	* Top level frame so serialVer can be run as an main program
	* and have an exit menu item.
	*/
	class SerialVerFrame extends Frame {
	MenuBar menu_mb;
	Menu file_m;
	MenuItem exit_i;

	private static final long serialVersionUID = -7248105987187532533L;

	/*
	* Construct a new Frame with title and menu.
	*/
	SerialVerFrame() {
	super(Res.getText("SerialVersionInspector"));

	/* Create the file menu */
	file_m = new Menu(Res.getText("File"));
	file_m.add(exit_i = new MenuItem(Res.getText("Exit")));

	/* Now add the file menu to the menu bar */
	menu_mb = new MenuBar();
	menu_mb.add(file_m);

	/* Add the menubar to the frame */
	// Bug in JDK1.1 setMenuBar(menu_mb);
	}

	/*
	* Handle a window destroy event by exiting.
	*/
	@SuppressWarnings("deprecation")
	public boolean handleEvent(Event e) {
	if (e.id == Event.WINDOW_DESTROY) {
	exit(0);
	}
	return super.handleEvent(e);
	}
	/*
	* Handle an Exit event by exiting.
	*/
	@SuppressWarnings("deprecation")
	public boolean action(Event ev, Object obj) {
	if (ev.target == exit_i) {
	exit(0);
	}
	return false;
	}

	/*
	* Cleanup and exit.
	*/
	void exit(int ret) {
	System.exit(ret);
	}

	}

	/**
	* Utility for integrating with serialver and for localization.
	* Handle Resources. Access to error and warning counts.
	* Message formatting.
	*
	* @see java.util.ResourceBundle
	* @see java.text.MessageFormat
	*/
	class Res {

	private static ResourceBundle messageRB;

	/**
	* Initialize ResourceBundle
	*/
	static void initResource() {
	try {
	messageRB =
	ResourceBundle.getBundle("sun.tools.serialver.resources.serialver");
	} catch (MissingResourceException e) {
	throw new Error("Fatal: Resource for serialver is missing");
	}
	}

	/**
	* get and format message string from resource
	*
	* @param key selects message from resource
	*/
	static String getText(String key) {
	return getText(key, (String)null);
	}

	/**
	* get and format message string from resource
	*
	* @param key selects message from resource
	* @param a1 first argument
	*/
	static String getText(String key, String a1) {
	return getText(key, a1, null);
	}

	/**
	* get and format message string from resource
	*
	* @param key selects message from resource
	* @param a1 first argument
	* @param a2 second argument
	*/
	static String getText(String key, String a1, String a2) {
	return getText(key, a1, a2, null);
	}

	/**
	* get and format message string from resource
	*
	* @param key selects message from resource
	* @param a1 first argument
	* @param a2 second argument
	* @param a3 third argument
	*/
	static String getText(String key, String a1, String a2, String a3) {
	if (messageRB == null) {
	initResource();
	}
	try {
	String message = messageRB.getString(key);
	return MessageFormat.format(message, a1, a2, a3);
	} catch (MissingResourceException e) {
	throw new Error("Fatal: Resource for serialver is broken. There is no " + key + " key in resource.");
	}
	}
	}

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