X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=src%2Forg%2Fxwt%2FXWT.java;h=cb186796f04bc10b8b237234a4ddef6326e7a190;hb=b3a4877fe48d36d1eb82b3fa33f2b3a1d5be718c;hp=ac095f241dbe073ff12077ec2489c704d1256243;hpb=fea7f27cc252c8feaafb8a5c0d4b9f391f03975d;p=org.ibex.core.git

diff --git a/src/org/xwt/XWT.java b/src/org/xwt/XWT.java
index ac095f2..cb18679 100644
--- a/src/org/xwt/XWT.java
+++ b/src/org/xwt/XWT.java
@@ -5,211 +5,400 @@ import java.io.*;
 import java.net.*;
 import java.text.*;
 import java.util.*;
+import org.xwt.js.*;
 import org.xwt.util.*;
-import org.mozilla.javascript.*;
+import org.bouncycastle.util.encoders.Base64;
 
 /** Singleton class that provides all functionality in the xwt.* namespace */
-public final class XWT extends JSObject {
+public final class XWT extends JS.Obj {
 
     public static final XWT singleton = new XWT();
-    public String getClassName() { return "XWT"; }
-    private XWT() { setSeal(true); }
-
-    public Object get(String name, Scriptable start) {
-        if (name == null) return null;
-        else if (name.equals("maxdim")) return new Integer(Short.MAX_VALUE);
-        else if (name.equals("parseFloat")) return JSObject.defaultObjects.get("parseFloat", null);
-        else if (name.equals("parseInt")) return JSObject.defaultObjects.get("parseInt", null);
-        else if (name.equals("alt")) return Surface.alt ? Boolean.TRUE : Boolean.FALSE;
+
+    /** each key is a string representing a filename which the user has already given XWT permission to write to */
+    private static Hashtable safeFiles = new Hashtable();
+
+    public Object get(Object name) {
+	if (name.equals("alt")) return Surface.alt ? Boolean.TRUE : Boolean.FALSE;
         else if (name.equals("control")) return Surface.control ? Boolean.TRUE : Boolean.FALSE;
         else if (name.equals("shift")) return Surface.shift ? Boolean.TRUE : Boolean.FALSE;
-        else if (name.equals("date")) return date;
-        else if (name.equals("listfonts")) return listfonts;
-        else if (name.equals("regexp")) return regexp;
-        else if (name.equals("sleep")) return sleep;
-        else if (name.equals("yield")) return yield;
-        else if (name.equals("newBrowserWindow")) return newBrowserWindow;
-        else if (name.equals("textwidth")) return textwidth;
-        else if (name.equals("textheight")) return textheight;
-        else if (name.equals("newBox")) return newBox;
-        else if (name.equals("soap")) return soap;
-        else if (name.equals("xmlrpc")) return xmlrpc;
         else if (name.equals("clipboard")) return Platform.getClipBoard();
-        else if (name.equals("altKeyName")) return Platform.altKeyName();
-        else if (name.equals("screenWidth")) return new Integer(Platform.getScreenWidth());
-        else if (name.equals("screenHeight")) return new Integer(Platform.getScreenHeight());
-        else if (name.equals("static")) return Static.getStatic("");
-        else if (name.equals("theme")) return theme;
+	else if (name.equals("static")) return Static.getStatic("");
         else if (name.equals("button")) {
             if (Surface.button1 && !Surface.button2 && !Surface.button3) return new Integer(1);
             else if (!Surface.button1 && Surface.button2 && !Surface.button3) return new Integer(1);
             else if (!Surface.button1 && !Surface.button2 && Surface.button3) return new Integer(1);
             else return new Integer(0);
-        }
-        else if (name.equals("println")) return println;
-        else if (name.equals("math")) return org.xwt.util.JSObject.defaultObjects.get("Math", null);
-        else return super.get(name, start);
+	}
+        else if (name.equals("encodeURI")) throw new Error("not implemented");
+        else if (name.equals("encodeURIComponent")) throw new Error("not implemented");
+        else if (name.equals("decodeURI")) throw new Error("not implemented");
+        else if (name.equals("decodeURIComponent")) throw new Error("not implemented");
+	else return super.get(name);
     }
 
-    public void put(String name, Scriptable start, Object value) {
-        if (name == null) return;
-        else if (name.equals("thread") && value != null && value instanceof Function) ThreadMessage.newthread((Function)value);
+    public void put(Object name, Object value) {
+	if (name.equals("thread") && value != null && value instanceof JS.Function) ThreadMessage.newthread((JS.Function)value);
         else if (name.equals("clipboard")) Platform.setClipBoard(value.toString());
-        else super.put(name, start, value);
+        else if (name.equals("proxyAuthorization")) {
+	    // FIXME: undocumented, possibly insecure
+            Proxy.Authorization.authorization = value.toString();
+            Proxy.Authorization.waitingForUser.release();
+        } else super.put(name, value);
     }
 
+    private XWT() {
+	put("maxdim", new Integer(Short.MAX_VALUE));
+        put("origin", Main.origin);
+        put("altKeyName", Platform.altKeyName());
+        put("screenWidth", new Integer(Platform.getScreenWidth()));
+        put("screenHeight", new Integer(Platform.getScreenHeight()));
+        put("fileSeparator", File.separator);
+        put("homeDir", System.getProperty("user.home"));
+        put("tempDir", System.getProperty("java.io.tempdir"));
 
-    // JSFunction Instances ///////////////////////////////////////////////////////////////////
+	put("math", new JS.Obj() { public Object get(Object name) {
+	    if ("ceil".equals(name)) return new JS.Function() { public Object _call(JS.Array args)
+		    { if (args.elementAt(0) == null) return null;
+		    return new Long((long)Math.ceil(Double.parseDouble(args.elementAt(0).toString()))); } };
+	    else if ("floor".equals(name)) return new JS.Function() { public Object _call(JS.Array args)
+		    { if (args.elementAt(0) == null) return null;
+			return new Long((long)Math.floor(Double.parseDouble(args.elementAt(0).toString()))); } };
+	    else if ("round".equals(name)) return new JS.Function() { public Object _call(JS.Array args)
+		    { if (args.elementAt(0) == null) return null;
+			return new Long((long)Math.round(Double.parseDouble(args.elementAt(0).toString()))); } };
+	    else if ("abs".equals(name)) return new JS.Function() { public Object _call(JS.Array args)
+		    { if (args.elementAt(0) == null) return null;
+			return new Long((long)Math.abs(Double.parseDouble(args.elementAt(0).toString()))); } };
+	    else if ("min".equals(name)) return new JS.Function() { public Object _call(JS.Array args) {
+		if (args.length() < 2 || args.elementAt(0) == null || args.elementAt(1) == null) return args.elementAt(0);
+		return new Double(Math.min(((Number)args.elementAt(0)).doubleValue(),
+					   ((Number)args.elementAt(1)).doubleValue())); } };
+	    else if ("max".equals(name)) return new JS.Function() { public Object _call(JS.Array args) {
+		if (args.length() < 2) return args.elementAt(0);
+		return new Double(Math.max(((Number)args.elementAt(0)).doubleValue(),
+					   ((Number)args.elementAt(1)).doubleValue())); } };
+	    else if ("cos".equals(name)) return new JS.Function() { public Object _call(JS.Array args) {
+		return new Double(Math.cos(((Number)args.elementAt(0)).doubleValue())); } };
+	    else if ("sin".equals(name)) return new JS.Function() { public Object _call(JS.Array args) {
+		return new Double(Math.sin(((Number)args.elementAt(0)).doubleValue())); } };
+	    else if ("tan".equals(name)) return new JS.Function() { public Object _call(JS.Array args) {
+		return new Double(Math.tan(((Number)args.elementAt(0)).doubleValue())); } };
+	    else if ("acos".equals(name)) return new JS.Function() { public Object _call(JS.Array args) {
+		return new Double(Math.acos(((Number)args.elementAt(0)).doubleValue())); } };
+	    else if ("asin".equals(name)) return new JS.Function() { public Object _call(JS.Array args) {
+		return new Double(Math.asin(((Number)args.elementAt(0)).doubleValue())); } };
+	    else if ("atan".equals(name)) return new JS.Function() { public Object _call(JS.Array args) {
+		return new Double(Math.atan(((Number)args.elementAt(0)).doubleValue())); } };
+	    return null;
+	}});
 
-    /** Helper class for defining functions. */
-    private static abstract class JSFunction extends JSObject implements Function {
-        JSFunction() { setSeal(true); }
-        public Scriptable construct(Context cx, Scriptable scope, java.lang.Object[] args) { return null; }
-    }
+	put("newBrowserWindow", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+	    if (args.length() != 1 || args.elementAt(0) == null) return null;
+	    Platform.newBrowserWindow(args.elementAt(0).toString());
+	    return null;
+	}});
 
-    private static final JSFunction newBrowserWindow = new JSFunction() {
-            public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
-                if (args.length != 1 || args[0] == null) return null;
-                Platform.newBrowserWindow(args[0].toString());
-                return null;
-            }
-        };
+	put("parseFloat", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+	    if (args.length() != 1 || args.elementAt(0) == null) return null;
+	    return new Float(args.elementAt(0).toString());
+	}});
 
-    private static final JSFunction yield = new JSFunction() {
-            public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
-                sleep.call(cx, null, null, null);
-                return null;
-            }
-        };
-
-    private static final JSFunction println = new JSFunction() {
-            public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
-                if (args.length == 1)
-                    if (Log.on)
-                        Log.log(cx.interpreterSourceFile, args[0] == null ? "null" : args[0].toString());
-                return null;
-            }
-        };
-
-    private static final JSFunction date = new JSFunction() {
-            public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
-                try { return Context.enter().newObject(org.xwt.util.JSObject.defaultObjects, "Date", args);
-                } catch (Exception e) {
-                    if (Log.on) Log.log(this, "Exception in Context.newObject() -- this should never happen");
-                    if (Log.on) Log.log(this, e);
-                    return null;
-                }
-            }
-        };
-
-    private static final JSFunction regexp = new JSFunction() {
-            public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
-                try { return Context.enter().newObject(org.xwt.util.JSObject.defaultObjects, "RegExp", args);
-                } catch (Exception e) {
-                    if (Log.on) Log.log(this, "Exception in Context.newObject() -- this should never happen");
-                    if (Log.on) Log.log(this, e);
-                    return null;
-                }
-            }
-        };
+	put("parseInt", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+	    if (args.length() != 1 || args.elementAt(0) == null) return null;
+	    return new Float(args.elementAt(0).toString());
+	}});
 
-    private static final JSFunction listfonts = new JSFunction() {
-            public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
-                return Context.enter().newArray(org.xwt.util.JSObject.defaultObjects,  Platform.listFonts());
-            }
-        };
-
-    private static final JSFunction theme = new JSFunction() {
-            public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
-                if (args.length != 2) return null;
-                if (args[0] == null || args[1] == null) return null;
-                Template.retheme(args[0].toString(), args[1].toString());
-                return null;
-            }
-        };
+	put("yield", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+	    sleep(0);
+	    return null;
+	}});
 
-    private static final JSFunction xmlrpc = new JSFunction() {
-            public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
-                if (args.length != 1 || args[0] == null) return null;
-                return new XMLRPC(args[0].toString(), "");
-            }
-        };
-
-    private static final JSFunction soap = new JSFunction() {
-            public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
-                if (args.length == 1 && args[0] != null) return new SOAP(args[0].toString(), "", null, null);
-                else if (args.length == 2 && args[0] != null && args[1] != null)
-                    return new SOAP(args[0].toString(), "", args[1].toString(), null);
-                else if (args.length == 3 && args[0] != null && args[1] != null && args[2] != null)
-                    return new SOAP(args[0].toString(), "", args[1].toString(), args[2].toString());
-                else return null;
-            }
-        };
-
-    private static final JSFunction textwidth = new JSFunction() {
-            public Object call(Context cx, Scriptable scope, Scriptable thisObj, Object[] args) throws JavaScriptException {
-                if (args.length < 1 || args.length > 2) return null;
-                if (args[0] == null || (args.length == 2 && args[1] == null)) return null;
-                String font = args.length == 1 ? Platform.getDefaultFont() : args[0].toString();
-                String text = args.length == 1 ? args[0].toString() : args[1].toString();
-                XWF xwf = XWF.getXWF(font);
-                if (xwf == null) return new Integer(Platform.stringWidth(font, text));
-                else return new Integer(xwf.stringWidth(text));
-            }
-        };
+	put("theme", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+		if (args.length() != 2) return null;
+		if (args.elementAt(0) == null || args.elementAt(1) == null) return null;
+		for(int i=1; i<args.length(); i++) {
+		    if (args.elementAt(i) instanceof String) {
+			String from = (String)args.elementAt(0);
+			String to = (String)args.elementAt(i);
+			if (Log.on) Log.log(this, "retheming from " + from + " to " + to);
+			Resources.mapFrom.addElement(from);
+			Resources.mapTo.addElement(to);
+		    }
+		}
+		JS.Function callback = args.elementAt(args.length() - 1) instanceof Function ?
+		    (Function)args.elementAt(args.length() - 1) : null;
+		Template.retheme(callback);
+		return null;
+	}});
+	    
+	put("println", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+	    if (args.length() != 1) return null;
+	    if (Log.on) Log.log(this, JS.getFileAndLine() + " " +
+				(args.elementAt(0) == null ? "**null**" : args.elementAt(0).toString()));
+	    return null;
+	}});
 
+	put("date", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+	    Log.log(XWT.class, "date not implemented");
+	    //throw new Error("not implemented");
+	    return null;
+        }});
 
-    private static final JSFunction textheight = new JSFunction() {
-            public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
-                if (args.length > 1) return null;
-                if (args.length == 1 && args[0] == null) return null;
-                String font = args.length == 0 || args[0] == null ? Platform.getDefaultFont() : args[0].toString();
-                XWF xwf = XWF.getXWF(font);
-                if (xwf == null) return new Integer(Platform.getMaxAscent(font) + Platform.getMaxDescent(font));
-                else return new Integer(xwf.getMaxAscent() + xwf.getMaxDescent());
-            }
-        };
-
-    private static final JSFunction newBox = new JSFunction() {
-            public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
-                Box ret = new Box(args.length == 0 || args[0] == null ? "box" : args[0].toString(), Template.defaultImportList);
-                for(int i=1; i<args.length; i++)
-                    if (args[i] instanceof Box)
-                        ret.put(ret.numChildren(), null, (Box)args[i]);
-                for(int i=1; i<args.length; i++)
-                    if (args[i] instanceof Scriptable && !(args[i] instanceof Box)) {
-                        Scriptable s = (Scriptable)args[i];
-                        Object[] keys = s.getIds();
-                        for(int j=0; j<keys.length; j++) ret.put(keys[j].toString(), null, s.get(keys[j].toString(), s));
-                    }
-                return ret;
-            }
-        };
+	put("regexp", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+	    //throw new Error("not implemented");
+	    Log.log(XWT.class, "regexp not implemented");
+	    return null;
+	}});
+
+	put("listfonts", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+	    Object[] fonts = Platform.listFonts();
+	    JS.Array ret = new JS.Array();
+	    for(int i=0; i<fonts.length; i++) ret.addElement(fonts[i]);
+	    return ret;
+	}});
+
+	put("xmlrpc", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+	    if (args.length() != 1 || args.elementAt(0) == null) return null;
+	    return new XMLRPC(args.elementAt(0).toString(), "");
+	}});
+
+	put("soap", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+	    if (args.length() == 1 && args.elementAt(0) != null) return new SOAP(args.elementAt(0).toString(), "", null, null);
+	    else if (args.length() == 2 && args.elementAt(0) != null && args.elementAt(1) != null)
+		return new SOAP(args.elementAt(0).toString(), "", args.elementAt(1).toString(), null);
+	    else if (args.length() == 3 && args.elementAt(0) != null && args.elementAt(1) != null && args.elementAt(2) != null)
+		return new SOAP(args.elementAt(0).toString(), "", args.elementAt(1).toString(), args.elementAt(2).toString());
+	    else return null;
+	}});
+
+	put("textwidth", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+	    if (args.length() < 1 || args.length() > 2) return null;
+	    if (args.elementAt(0) == null || (args.length() == 2 && args.elementAt(1) == null)) return null;
+	    String font = args.length() == 1 ? Platform.getDefaultFont() : args.elementAt(0).toString();
+	    String text = args.length() == 1 ? args.elementAt(0).toString() : args.elementAt(1).toString();
+	    XWF xwf = XWF.getXWF(font);
+	    if (xwf == null) return new Integer(Platform.stringWidth(font, text));
+	    else return new Integer(xwf.stringWidth(text));
+	}});
 
-    private static final JSFunction sleep = new JSFunction() {
-            public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
-                if (args != null && (args.length != 1 || args[0] == null)) return null;
-                int i = args == null ? 0 : SpecialBoxProperty.stoi(args[0].toString());
+	put("textheight", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+	    if (args.length() > 1) return null;
+	    if (args.length() == 1 && args.elementAt(0) == null) return null;
+	    String font = args.length() == 0 || args.elementAt(0) == null ? Platform.getDefaultFont() : args.elementAt(0).toString();
+	    XWF xwf = XWF.getXWF(font);
+	    if (xwf == null) return new Integer(Platform.getMaxAscent(font) + Platform.getMaxDescent(font));
+	    else return new Integer(xwf.getMaxAscent() + xwf.getMaxDescent());
+	}});
+	
+	put("newBox", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+	    if (args.length() > 0) Log.log(XWT.class, "DEPRECATED: xwt.newBox() with multiple arguments is deprecated; use xwt.newBox().apply()");
+	    JS.Function callback = null;
+	    for(int i=1; i<args.length(); i++)
+		if (args.elementAt(i) instanceof JS.Function && callback == null)
+		    callback = (JS.Function)args.elementAt(i);
+	    Box ret = new Box(args.length() == 0 || args.elementAt(0) == null ? "box" : args.elementAt(0).toString(),
+			      Template.defaultImportList, callback);
+	    for(int i=1; i<args.length(); i++)
+		if (args.elementAt(i) instanceof Box)
+		    ret.put(ret.numChildren(), (Box)args.elementAt(i));
+	    for(int i=1; i<args.length(); i++)
+		if (args.elementAt(i) instanceof JS && !(args.elementAt(i) instanceof Box) && !(args.elementAt(i) instanceof JS.Function)) {
+		    JS s = (JS)args.elementAt(i);
+		    Object[] keys = s.keys();
+		    for(int j=0; j<keys.length; j++) ret.put(keys[j].toString(), s.get(keys[j].toString()));
+		}
+	    return ret;
+	}});
 
-                Thread thread = Thread.currentThread();
-                if (!(thread instanceof ThreadMessage)) {
-                    if (Log.on) Log.log(this, "cannot sleep() or yield() in the foreground thread");
-                    return null;
+	put("sleep", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+	    if (args != null && (args.length() != 1 || args.elementAt(0) == null)) return null;
+	    int i = args == null ? 0 : SpecialBoxProperty.stoi(args.elementAt(0).toString());
+	    sleep(i);
+	    return null;
+	}});
+
+	put("openFile", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+	    if (args.length() != 1) return null;
+	    String file = Platform.fileDialog(args.elementAt(0).toString(), false);
+	    return file == null ? null : new ByteStream(file);
+	}});
+
+	put("saveFile", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+	    if (args.length() != 2) return null;
+	    if (!(args.elementAt(1) instanceof ByteStream)) return null;
+	    String file = args.elementAt(0).toString();
+	    if (safeFiles.get(Platform.isCaseSensitive() ? file : file.toLowerCase()) == null) {
+		file = Platform.fileDialog(file, true);
+		if (file == null) return null;
+		safeFiles.put(Platform.isCaseSensitive() ? file : file.toLowerCase(), new Object());
+	    }
+	    try {
+		((ByteStream)args.elementAt(1)).writeTo(new FileOutputStream(file));
+		return null;
+	    } catch (IOException e) {
+		if (Log.on) Log.log(ByteStream.class, "IO Exception while writing a ByteStream to a file");
+		if (Log.on) Log.log(ByteStream.class, e);
+		throw new JS.Exn("error while writing a ByteStream to a file");
+	    }
+	}});
+
+	put("saveFileAs", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+	    if (args.length() != 2) return null;
+	    if (!(args.elementAt(1) instanceof ByteStream)) return null;
+	    String file = args.elementAt(0).toString();
+	    file = Platform.fileDialog(file, true);
+	    if (file == null) return null;
+	    safeFiles.put(Platform.isCaseSensitive() ? file : file.toLowerCase(), new Object());
+	    try {
+		((ByteStream)args.elementAt(1)).writeTo(new FileOutputStream(file));
+		return null;
+	    } catch (IOException e) {
+		if (Log.on) Log.log(ByteStream.class, "IO Exception while writing a ByteStream to a file");
+		if (Log.on) Log.log(ByteStream.class, e);
+		throw new JS.Exn("error while writing a ByteStream to a file");
+	    }
+	}});
+
+	put("utfEncode", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+	    if (args == null || args.length() != 1) return null;
+	    return new ByteStream(args.elementAt(0).toString().getBytes());
+	}});
+
+	put("parseHTML", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+                if (args == null || args.length() != 1 || args.elementAt(0) == null) return null;
+                try {
+                    if (args.elementAt(0) instanceof ByteStream) {
+                        return HTML.parseReader(new InputStreamReader(((ByteStream)args.elementAt(0)).getInputStream()));
+                    } else {
+                        return HTML.parseReader(new StringReader(args.elementAt(0).toString()));
+                    }
+                } catch (IOException e) {
+                    if (Log.on) Log.log(HTML.class, "IO Exception while parsing HTML");
+                    if (Log.on) Log.log(HTML.class, e);
+                    throw new JS.Exn("error while parsing HTML");
                 }
-                ThreadMessage mythread = (ThreadMessage)thread;
-                mythread.done.release();
-
-                if (i > 0) try { Thread.sleep(i); } catch (Exception e) { }
-                
-                MessageQueue.add(mythread);
-                mythread.go.block();
-                return null;
             }
-        };
+        });
+    
+    put("recursivePrintObject", new JS.Function() { public Object _call(JS.Array args) {
+	if (args.length() != 1) return null;
+	recurse("", "", args.elementAt(0));
+	return null;
+    }});
+
+    put("loadArchive", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+	if (!ThreadMessage.suspendThread()) return null;
+	try {
+	    if (args == null || args.length() < 1 || args.elementAt(0) == null) return null;
+	    URL u = new URL(args.elementAt(0).toString());
+	    
+	    JS.Function callback = null;
+	    if (args.length() == 2 && args.elementAt(1) != null && args.elementAt(1) instanceof JS.Function)
+		callback = (JS.Function)args.elementAt(1);
+	    
+	    if (!u.getFile().endsWith(".xwar")) {
+		if (Log.on) Log.log(this, "Error: archive names must end with .xwar: " + u.getFile());
+		throw new JS.Exn("Error: archive names must end with .xwar: " + u.getFile());
+	    }
+	    
+	    if (u.getProtocol().equals("http")) {
+		HTTP http = new HTTP(u.toString());
+		if (Main.originAddr == null) {
+		    try {
+			Main.originAddr = InetAddress.getByName(u.getHost());
+		    } catch (UnknownHostException e) {
+			if (Log.on) Log.log(this, "couldn't resolve " + u.getHost() + "; proceeding without permissions");
+			Main.originAddr = InetAddress.getByName("0.0.0.0");
+		    }
+		} else {
+		    Main.originAddr = InetAddress.getByName("0.0.0.0");
+		}
+		HTTP.HTTPInputStream in = http.GET();
+		Resources.loadArchive(in, in.getContentLength(), callback);
+		
+	    } else if (u.getProtocol().equals("file")) {
+		if (Main.originAddr != null) {
+		    if (Log.on) Log.log(this, "scripts downloaded from the network may not load xwars from the local filesystem");
+		    throw new JS.Exn("scripts downloaded from the network may not load xwars from the local filesystem");
+		}
+		Resources.loadArchive(new FileInputStream(u.getFile()), (int)new File(u.getFile()).length(), callback);
+		
+	    } else {
+		if (Log.on) Log.log(this, "unknown protocol \"" + u.getProtocol() + "\"");
+		throw new JS.Exn("unknown protocol \"" + u.getProtocol() + "\"");
+	    }
+	    
+	} catch (MalformedURLException me) {
+	    if (Log.on) Log.log(this, "Malformed URL: " + args.elementAt(0));
+	    if (Log.on) Log.log(this, me);
+	    throw new JS.Exn(me.toString());
+	    
+	} catch (IOException ioe) {
+	    if (Log.on) Log.log(this, "IOException while loading archive:");
+	    if (Log.on) Log.log(this, ioe);
+	    throw new JS.Exn(ioe.toString());
+	    
+	} finally {
+	    ThreadMessage.resumeThread();
+	    
+	}
+	return null;
+    }});
+
+    put("prefetchImage", new JS.Function() { public Object _call(JS.Array args) throws JS.Exn {
+	if (args == null || args.length() < 1 || args.elementAt(0) == null) return null;
+	Box.getImage(args.elementAt(0).toString(),
+		     args.length() > 1 && args.elementAt(1) instanceof JS.Function ? (JS.Function)args.elementAt(1) : null);
+	return null;
+    }});
+    }
+
+    private static void recurse(String indent, String name, Object o) {
+        if (!name.equals("")) name += " : ";
+
+        if (o == null) {
+            Log.log(JS.getCurrentFunction().getSourceName(), indent + name + "<null>");
 
+        } else if (o instanceof JS.Array) {
+            Log.log(JS.getCurrentFunction().getSourceName(), indent + name + "<array>");
+            JS.Array na = (JS.Array)o;
+            for(int i=0; i<na.length(); i++)
+                recurse(indent + "  ", i + "", na.elementAt(i));
+
+        } else if (o instanceof JS) {
+            Log.log(JS.getCurrentFunction().getSourceName(), indent + name + "<object>");
+            JS s = (JS)o;
+            Object[] keys = s.keys();
+            for(int i=0; i<keys.length; i++)
+                recurse(indent + "  ", keys[i].toString(),
+                        (keys[i] instanceof Integer) ?
+			s.get(((Integer)keys[i])) : s.get(keys[i].toString()));
+
+        } else {
+            Log.log(JS.getCurrentFunction().getSourceName(), indent + name + o);
+
+        }
+    }
+
+
+    public static void sleep(int i) {
+	Thread thread = Thread.currentThread();
+	if (!(thread instanceof ThreadMessage)) {
+	    if (Log.on) Log.log(XWT.class, "cannot sleep() or yield() in the foreground thread");
+	} else {
+	    ThreadMessage mythread = (ThreadMessage)thread;
+	    mythread.done.release();
+	    if (i > 0) try { Thread.sleep(i); } catch (Exception e) { }
+	    MessageQueue.add(mythread);
+	    mythread.go.block();
+	}
+    }
 }
 
 
 
 
 
+
+
+