src/org/xwt/Main.java

   1 // Copyright 2002 Adam Megacz, see the COPYING file for licensing [GPL]
   2 package org.xwt;
   3
   4 import org.xwt.util.*;
   5 import java.lang.reflect.*;
   6 import java.applet.*;
   7 import java.net.*;
   8 import java.util.*;
   9 import java.io.*;
  10 import java.awt.*;
  11 import org.bouncycastle.util.encoders.Base64;
  12
  13 /** Entry point for the XWT Engine; handles splash screen, initial xwar loading, and argument processing */
  14 public class Main extends Applet {
  15
  16     /**
  17      *  Used for security checks. If this is null, it means that only
  18      *  scripts originating from the local filesystem are loaded in
  19      *  the engine (maximum permissions). If scripts have been loaded
  20      *  from multiple locations, this will be 0.0.0.0 (the invalid
  21      *  IP).
  22      */
  23     public static java.net.InetAddress originAddr = null;
  24
  25     /** the URL where the initial xwar came from. */
  26     public static String origin = null;
  27
  28     /** true iff the user asked for rendered regions to be shown with a red rectangle */
  29     public static boolean showRenders = false;
  30
  31     public Main() { }
  32     public void paint(Graphics g) { }    // do-nothing method to avoid repaints
  33     public void update(Graphics g) { }   // do-nothing method, to avoid repaints
  34
  35     public static Applet applet = null;
  36
  37     /** applet entry point */
  38     public void init() {
  39         if ("true".equals(getParameter("showRenders"))) showRenders = true;
  40         if ("true".equals(getParameter("verbose"))) Log.verbose = true;
  41         applet = this;
  42         main(new String[] { getParameter("initial-xwar-url"), "main" });
  43     }
  44
  45     /** common entry point */
  46     public static void main(String[] args) {
  47         try {
  48             int startargs = 0;
  49             while (true) {
  50                 if (startargs > args.length - 1) {
  51                     System.out.println("Usage: xwt [-s] [-v] source-location [initial-template]");
  52                     System.out.println("");
  53                     System.out.println("Options:");
  54                     System.out.println("    -s show rendering activity with red rectangles");
  55                     System.out.println("    -v verbose logging");
  56                     System.out.println("");
  57                     System.out.println("Source-location is one of the following:");
  58                     System.out.println("    - the path to an xwar file");
  59                     System.out.println("    - the path to a directory to be used as an xwar");
  60                     System.out.println("    - the http url of an xwar");
  61                     System.out.println("");
  62                     System.out.println("Initial-template is the resource name of the template to load; defaults to 'main'");
  63                     Runtime.getRuntime().exit(-1);
  64                 }
  65                 else if (args[startargs].equals("-s")) showRenders = true;
  66                 else if (args[startargs].equals("-v")) Log.verbose = true;
  67                 else break;
  68                 startargs++;
  69             }
  70             final String instancename = args.length > startargs + 1 ? args[startargs + 1] : "main";
  71
  72             Platform.forceLoad();
  73             if (Log.on) for(int i=0; i<args.length; i++) Log.log(Main.class, "argument " + i + ": " + args[i]);
  74
  75             // we do this here instead of in a static initializer to avoid threading hazards
  76             if (Log.on) Log.log(Main.class, "loading scar image");
  77             PNG png = PNG.decode(new ByteArrayInputStream(Base64.decode(scarPicture_png_base64)), "bundled scar image");
  78             Surface.scarPicture = Platform.createPicture(png.getData(), png.getWidth(), png.getHeight());
  79
  80             InputStream is = Main.class.getClassLoader().getResourceAsStream("org/xwt/builtin.xwar");
  81             if (is == null) Platform.criticalAbort("unable to load builtin.xwar");
  82             Resources.loadArchive(is);
  83
  84             String initialTemplate = "main";
  85
  86             if (args.length > startargs) {
  87                 if (args[startargs].startsWith("http://")) {
  88                     if (Log.on) Log.log(Main.class, "downloading xwar");
  89                     origin = args[startargs];
  90                     initialTemplate = "org.xwt.builtin.splash";
  91
  92                 } else {
  93                     if (Log.on) Log.log(Main.class, "loading xwar from local filesystem");
  94
  95                     // HACK because MSIE turns \'s into /'s in URLs... argh!!
  96                     if (Platform.platform.getClass().getName().endsWith("Win32"))
  97                         args[startargs] = args[startargs].replace('/', '\\');
  98
  99                     File f = new File(args[startargs]);
 100                     origin = "file:" + f.getAbsolutePath();
 101                     if (f.isDirectory()) {
 102                         Resources.loadDirectory(f);
 103                     } else {
 104                         initialTemplate = "org.xwt.builtin.splash";
 105                     }
 106
 107                     if (args.length > startargs + 1) initialTemplate = args[startargs + 1];
 108                 }
 109             }
 110
 111             if (Log.on) Log.log(Main.class, "instantiating " + initialTemplate);
 112             final String initialTemplate_f = initialTemplate;
 113             MessageQueue.add(new Message() {
 114                     public void perform() {
 115                         new Box(initialTemplate_f, null);
 116                     }
 117                 });
 118
 119             // gcj-win32 exit()'s when the original thread dies, so we have to deadlock ourselves
 120             if (Log.on) Log.log(Main.class, "main thread blocking on new semaphore");
 121             new org.xwt.util.Semaphore().block();
 122
 123         } catch (Throwable e) {
 124             e.printStackTrace();
 125             Platform.criticalAbort("exception in Main.main(): " + e);
 126         }
 127     }
 128
 129     /** a base64-encoded png image of the scar */
 130     public static final String scarPicture_png_base64 =
 131         "iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAABmJLR0QA/wD/AP+gvaeTAAAA" +
 132         "CXBIWXMAAAsRAAALEQF/ZF+RAAAAB3RJTUUH0gIYAgsIkuS+AwAAA7lJREFUeJzF1l9MW1Uc" +
 133         "wPHvvb3lz/oHOssd0hXo+NNONow102xDSXzoJGiyGBIyDNMlJvjn0USNL74ZY3wnxOgeWIxo" +
 134         "9uAmZBrMiNkYYw5xRGBFQdiuzgtl/Gmht7S9PsBM162lGwN+yU3uPTf3nM895/c7OXwOfSKI" +
 135         "23Z1yDJt0Ms2hQhwARa3CyHeudkuhJj4sB0IMblhqxH3ALYacV/AViJSArYKkRawFYh1AZuN" +
 136         "yAiwmQgpzTsBMMzVv14V00PWQGDhJpd/UNugdwBebIOFRwFINwOGwJHXPH/d9BdYrbXZpaV1" +
 137         "ZUPeZ8RuiHnhXAvYNxMghEEMaXO79rjqyLeV6c5iD01Nrz4bevnYwYFVxJkWsG4WQM+B+I6e" +
 138         "7/q0SH98srXuYufpk2NGo8Tx5jcF6/unDwyA5oVzmwUAiBlhReg622eG6L7xDuWbjp+iJSVO" +
 139         "Kisfl2Z8p8QLENxoYqatgjzQAeFy4QvOs0ZX5bGmeunvWxK//jaNQQpLsPHqSJkDgKT6GrxD" +
 140         "xZ6DkimrzFffUFS020dX50B8efaPyeyuN5ZZBW4IkQogqb6Gp0b9IxZJcmKzubCYvfT0KAjx" +
 141         "ES3r1LtTQDzxg4dFiA5V/UCRZUtio+p7xTtyfdgqiEXIBW5cew6xv/p5ap8zBVbi8ez5hg9d" +
 142         "O8DA6kxtCCG2w8/JiPngrMUgObE/VoHDeYAn9taytBxDRw+/VH9YlHJFR7Dxo4o1xF3xoAiD" +
 143         "AMI1mKwJhcYUWa63hkKRyXx7saZliU9WH8XjqSUciWHLs3HrX6x2e9a0212yqEXthWGPNzdy" +
 144         "9cdZkpZjCiLvwNvfwxcZAQASEe6JMWXGUeCM6TaKiqoxm8xMB26zM9+OOq2b9lYVWsrLyoWJ" +
 145         "G1FzvKo8L3r1/D/JHWeKuCsJE5ZDfPr3/l6BYX14tJvgUhBbfh7TgQDuCkvYarKg3BCIRu1E" +
 146         "V3bFUnWeyXLcUwVriE8UWTYUn//2UjTi1/3+iwSDi+zft5NSV27O6EiUwaE/CS8NaMaTLaPp" +
 147         "BlgPcd8ybIczDlX9VJFlg73zs0va8qA+PtGHxWTGfz3O4NA483O/aHrriStLEEkHWA/xfw4k" +
 148         "xzUYrQmF5hVZPlw42D216CrdPXfbKMzMRliYv6LReqJ/CVZISsBUkSonBHGd7bgZjiqy/F6F" +
 149         "qsZCjR87c0w2DF++Nbn25xkNnhg1YGmBQxkD1hDFiix/7VDVxQcdcD1ERkeydphyqOrx5B3z" +
 150         "YSMxJzKagTvRDKWKLH/VqKqPwgHAf3HDlnr6flmoAAAAAElFTkSuQmCC";
 151 }