/*
* Copyright (c) 1996, 2005, 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();
}
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;
}
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 " static final long serialVersionUID = " +
desc.getSerialVersionUID() + "L;";
} else {
return null;
}
}
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();
f.show();
}
}
/**
* 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.
*/
public boolean handleEvent(Event e) {
if (e.id == Event.WINDOW_DESTROY) {
exit(0);
}
return super.handleEvent(e);
}
/*
* Handle an Exit event by exiting.
*/
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);
String[] args = new String[3];
args[0] = a1;
args[1] = a2;
args[2] = a3;
return MessageFormat.format(message, args);
} catch (MissingResourceException e) {
throw new Error("Fatal: Resource for serialver is broken. There is no " + key + " key in resource.");
}
}
}