Subversion Repositories Applications.papyrus

/*
* Rhino host environment
*/

if(djConfig["baseUrl"]){
        dojo.baseUrl = djConfig["baseUrl"];
}else{
        dojo.baseUrl = "./";
}

dojo.locale = dojo.locale || String(java.util.Locale.getDefault().toString().replace('_','-').toLowerCase());
dojo._name = 'rhino';
dojo.isRhino = true;

if(typeof print == "function"){
        console.debug = print;
}

if(typeof dojo["byId"] == "undefined"){
        dojo.byId = function(id, doc){
                if(id && (typeof id == "string" || id instanceof String)){
                        if(!doc){ doc = document; }
                        return doc.getElementById(id);
                }
                return id; // assume it's a node
        }
}

// see comments in spidermonkey loadUri
dojo._loadUri = function(uri, cb){
        try{
                var local = (new java.io.File(uri)).exists();
                if(!local){
                        try{
                                // try it as a file first, URL second
                                var stream = (new java.net.URL(uri)).openStream();
                                // close the stream so we don't leak resources
                                stream.close();
                        }catch(e){
                                // no debug output; this failure just means the uri was not found.
                                return false;
                        }
                }
                //FIXME: Use Rhino 1.6 native readFile/readUrl if available?
                if(cb){
                        var contents = (local ? readText : readUri)(uri, "UTF-8");
                        cb(eval('('+contents+')'));
                }else{
                        load(uri);
                }
                return true;
        }catch(e){
                console.debug("rhino load('" + uri + "') failed. Exception: " + e);
                return false;
        }
}

dojo.exit = function(exitcode){ 
        quit(exitcode);
}

// Hack to determine current script...
//
// These initial attempts failed:
//   1. get an EcmaError and look at e.getSourceName(): try {eval ("static in return")} catch(e) { ...
//   Won't work because NativeGlobal.java only does a put of "name" and "message", not a wrapped reflecting object.
//   Even if the EcmaError object had the sourceName set.
//  
//   2. var e = Packages.org.mozilla.javascript.Context.getCurrentContext().reportError('');
//   Won't work because it goes directly to the errorReporter, not the return value.
//   We want context.interpreterSourceFile and context.interpreterLine, which are used in static Context.getSourcePositionFromStack
//   (set by Interpreter.java at interpretation time, if in interpreter mode).
//
//   3. var e = Packages.org.mozilla.javascript.Context.getCurrentContext().reportRuntimeError('');
//   This returns an object, but e.message still does not have source info.
//   In compiler mode, perhaps not set; in interpreter mode, perhaps not used by errorReporter?
//
// What we found works is to do basically the same hack as is done in getSourcePositionFromStack,
// making a new java.lang.Exception() and then calling printStackTrace on a string stream.
// We have to parse the string for the .js files (different from the java files).
// This only works however in compiled mode (-opt 0 or higher).
// In interpreter mode, entire stack is java.
// When compiled, printStackTrace is like:
// java.lang.Exception
//      at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
//      at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
//      at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
//      at java.lang.reflect.Constructor.newInstance(Constructor.java:274)
//      at org.mozilla.javascript.NativeJavaClass.constructSpecific(NativeJavaClass.java:228)
//      at org.mozilla.javascript.NativeJavaClass.construct(NativeJavaClass.java:185)
//      at org.mozilla.javascript.ScriptRuntime.newObject(ScriptRuntime.java:1269)
//      at org.mozilla.javascript.gen.c2.call(/Users/mda/Sites/burstproject/testrhino.js:27)
//    ...
//      at org.mozilla.javascript.tools.shell.Main.main(Main.java:76)
//
// Note may get different answers based on:
//    Context.setOptimizationLevel(-1)
//    Context.setGeneratingDebug(true)
//    Context.setGeneratingSource(true) 
//
// Some somewhat helpful posts:
//    http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&safe=off&selm=9v9n0g%246gr1%40ripley.netscape.com
//    http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&safe=off&selm=3BAA2DC4.6010702%40atg.com
//
// Note that Rhino1.5R5 added source name information in some exceptions.
// But this seems not to help in command-line Rhino, because Context.java has an error reporter
// so no EvaluationException is thrown.

// do it by using java java.lang.Exception
dojo._rhinoCurrentScriptViaJava = function(depth){
    var optLevel = Packages.org.mozilla.javascript.Context.getCurrentContext().getOptimizationLevel();  
    var caw = new java.io.CharArrayWriter();
    var pw = new java.io.PrintWriter(caw);
    var exc = new java.lang.Exception();
    var s = caw.toString();
    // we have to exclude the ones with or without line numbers because they put double entries in:
    //   at org.mozilla.javascript.gen.c3._c4(/Users/mda/Sites/burstproject/burst/Runtime.js:56)
    //   at org.mozilla.javascript.gen.c3.call(/Users/mda/Sites/burstproject/burst/Runtime.js)
    var matches = s.match(/[^\(]*\.js\)/gi);
    if(!matches){
                throw Error("cannot parse printStackTrace output: " + s);
        }

    // matches[0] is entire string, matches[1] is this function, matches[2] is caller, ...
    var fname = ((typeof depth != 'undefined')&&(depth)) ? matches[depth + 1] : matches[matches.length - 1];
    var fname = matches[3];
        if(!fname){ fname = matches[1]; }
    // print("got fname '" + fname + "' from stack string '" + s + "'");
    if (!fname){ throw Error("could not find js file in printStackTrace output: " + s); }
    //print("Rhino getCurrentScriptURI returning '" + fname + "' from: " + s); 
    return fname;
}

// reading a file from disk in Java is a humiliating experience by any measure.
// Lets avoid that and just get the freaking text
function readText(path, encoding){
        encoding = encoding || "utf-8";
        // NOTE: we intentionally avoid handling exceptions, since the caller will
        // want to know
        var jf = new java.io.File(path);
        var is = new java.io.FileInputStream(jf);
        return dj_readInputStream(is, encoding);
}

function readUri(uri, encoding){
        var conn = (new java.net.URL(uri)).openConnection();
        encoding = encoding || conn.getContentEncoding() || "utf-8";
        var is = conn.getInputStream();
        return dj_readInputStream(is, encoding);
}

function dj_readInputStream(is, encoding){
        var input = new java.io.BufferedReader(new java.io.InputStreamReader(is, encoding));
        try {
                var sb = new java.lang.StringBuffer();
                var line = "";
                while((line = input.readLine()) !== null){
                        sb.append(line);
                        sb.append(java.lang.System.getProperty("line.separator"));
                }
                return sb.toString();
        } finally {
                input.close();
        }
}

// call this now because later we may not be on the top of the stack
if(!djConfig.libraryScriptUri.length){
        try{
                djConfig.libraryScriptUri = dojo._rhinoCurrentScriptViaJava(1);
        }catch(e){
                // otherwise just fake it
                if(djConfig["isDebug"]){
                        print("\n");
                        print("we have no idea where Dojo is located.");
                        print("Please try loading rhino in a non-interpreted mode or set a");
                        print("\n\tdjConfig.libraryScriptUri\n");
                        print("Setting the dojo path to './'");
                        print("This is probably wrong!");
                        print("\n");
                        print("Dojo will try to load anyway");
                }
                djConfig.libraryScriptUri = "./";
        }
}

// summary:
//              return the document object associated with the dojo.global
dojo.doc = typeof(document) != "undefined" ? document : null;

dojo.body = function(){
        return document.body;   
}

dojo._timeouts = [];

function clearTimeout(idx){
        if(!dojo._timeouts[idx]){ return; }
        dojo._timeouts[idx].stop();
}

function setTimeout(func, delay){
        // summary: provides timed callbacks using Java threads

        var def={
                sleepTime:delay,
                hasSlept:false,
                
                run:function(){
                        if(!this.hasSlept){
                                this.hasSlept=true;
                                java.lang.Thread.currentThread().sleep(this.sleepTime);
                        }
                        try{
                                func();
                        }catch(e){
                                console.debug("Error running setTimeout thread:" + e);
                        }
                }
        };
        
        var runnable = new java.lang.Runnable(def);
        var thread = new java.lang.Thread(runnable);
        thread.start();
        return dojo._timeouts.push(thread)-1;
}

//Register any module paths set up in djConfig. Need to do this
//in the hostenvs since hostenv_browser can read djConfig from a
//script tag's attribute.
if(djConfig["modulePaths"]){
        for(var param in djConfig["modulePaths"]){
                dojo.registerModulePath(param, djConfig["modulePaths"][param]);
        }
}