Allow env-js to be require'd.

This fixes a bug with the usage of `require` in env-js, such that env-js now
uses proper relative paths rather than unshifting "." onto `require.paths`. The
behavior of `require` is documented here:

  <http://nodejs.org/docs/v0.4.2/api/modules.html#all_Together...>

With this change in place, it's now possible to use env-js simply by require'ing
it from a script, rather than having env-js host and eval.

Also, this commit changes the initialization of env-js, such that the initial
document is immediately available when the env-js module is loaded. And, the
event loop is disabled so that env-js shuts down cleanly. This probably breaks
some parts of env-js, but it makes it much easier to use so I'm going to play
with it a bit.

lib/env-js/bin/envjs

@@ -0,0 +1,39 @@
+#!/bin/sh
+# 	Usage: envjs <platorm> file.js [file2.js ...]
+###########################################################################
+ENVJS_PLATFORM='node'
+
+# 	first arguments ($1) 
+#		may be a platform or is a file and the default platorm is used
+if [ -n "$1" ]; then 
+    if [ -n "$1" ]; then ENVJS_PLATFORM="$1"; shift; fi
+fi
+
+#   Run envjs with the given platform
+###########################################################################
+case "$ENVJS_PLATFORM" in
+
+    "node")
+        node envjs/node.js $@
+        ;;
+    "rhino")
+        java -Xmx512M -jar rhino/js.jar -opt -1 envjs/rhino.js $@
+        ;;
+    "rhino-debug")
+        java -cp rhino/js.jar org.mozilla.javascript.tools.debugger.Main envjs/rhino.js $@
+        ;;
+    "spyd")
+        python envjs/spydermonkey.py envjs/spydermonkey.js $@
+        ;;
+    "rubyracer")
+        ruby -rrubygems envjs/rubyracer.rb envjs/rubyracer.js $@
+        ;;
+    "johnson")
+        ruby -rrubygems envjs/johnson.rb envjs/johnson.js $@
+        ;;
+	*)
+		#	platform default means $1 was actually a file
+        node envjs/node.js $ENVJS_PLATFORM $@
+        ;;
+esac
+

lib/env-js/envjs/console.js

@@ -4,10 +4,10 @@
  * @Console
  */
 
-var Envjs = Envjs || require('envjs/platform/core').Envjs;
+var Envjs = Envjs || require('./platform/core').Envjs;
 
 /*
- * Envjs console.1.3.pre03 
+ * Envjs console.1.3.pre03
  * Pure JavaScript Browser Environment
  * By John Resig <http://ejohn.org/> and the Envjs Team
  * Copyright 2008-2010 John Resig, under the MIT License
@@ -28,7 +28,7 @@ var Envjs = Envjs || require('envjs/platform/core').Envjs;
 try{
     console.log();
 }catch(e){
-    
+
 
 function escapeHTML(value)
 {

lib/env-js/envjs/css.js

@@ -18,9 +18,9 @@ var CSS2Properties,
 
 */
 
-var Envjs = Envjs || require('envjs/platform/core').Envjs,
-	Document = require('envjs/dom').Document,
-	HTMLElement = require('envjs/html').HTMLElement;
+var Envjs = Envjs || require('./platform/core').Envjs,
+	Document = require('./dom').Document,
+	HTMLElement = require('./html').HTMLElement;
 /*
  * Envjs css.1.3.pre03 
  * Pure JavaScript Browser Environment

lib/env-js/envjs/dom.js

@@ -41,8 +41,8 @@ var Attr,
 
 */
 
-var Envjs = Envjs || require('envjs/platform/core').Envjs,
-	After = After || require('envjs/platform/core').After;
+var Envjs = Envjs || require('./platform/core').Envjs,
+	After = After || require('./platform/core').After;
 
 /*
  * Envjs dom.1.3.pre03 

lib/env-js/envjs/event.js

@@ -20,9 +20,9 @@ var Event,
     
  */
 
-var Envjs = Envjs || require('envjs/platform/core').Envjs,
-	After = After || require('envjs/platform/core').After,
-	Document = Document || require('envjs/dom').Document;
+var Envjs = Envjs || require('./platform/core').Envjs,
+	After = After || require('./platform/core').After,
+	Document = Document || require('./dom').Document;
 /*
  * Envjs event.1.3.pre03 
  * Pure JavaScript Browser Environment

lib/env-js/envjs/html.js

@@ -68,13 +68,13 @@
     __loadLink__;
 */
 
-var Envjs = Envjs || require('envjs/platform/core').Envjs,
-	After = After || require('envjs/platform/core').After,
-	Document = Document || require('envjs/dom').Document,
-	Element = Element || require('envjs/dom').Element,
-	NodeList = NodeList || require('envjs/dom').NodeList,
-	Node = Node || require('envjs/dom').Node,
-	Event = Event || require('envjs/event').Event;
+var Envjs = Envjs || require('./platform/core').Envjs,
+	After = After || require('./platform/core').After,
+	Document = Document || require('./dom').Document,
+	Element = Element || require('./dom').Element,
+	NodeList = NodeList || require('./dom').NodeList,
+	Node = Node || require('./dom').Node,
+	Event = Event || require('./event').Event;
 
 /*
  * Envjs html.1.3.pre03 

lib/env-js/envjs/johnson.js

@@ -62,5 +62,5 @@ var require = (function() {
     return require;
 })();
 
-require('envjs/platform/johnson');
-require('envjs/window');
+require('./platform/johnson');
+require('./window');

lib/env-js/envjs/node.js

@@ -1,3 +1,5 @@
-require.paths.unshift('.');
-require('envjs/platform/node');
-require('envjs/window');
+require('./platform/node');
+Envjs.eventLoop = function() {}; // disabled for clean shutdown
+
+require('./window');
+new Window(__this__); // initialize a blank window

lib/env-js/envjs/parser.js

@@ -9,19 +9,19 @@
  *
  */ 
 
-var Envjs = Envjs || require('envjs/platform/core').Envjs,
-	After = After || require('envjs/platform/core').After,
-	DOMImplementation = DOMImplementation || require('envjs/dom').DOMImplementation,
-	Document = Document || require('envjs/dom').Document,
-	Element = Element || require('envjs/dom').Element,
-	NodeList = NodeList || require('envjs/dom').NodeList,
-	Node = Node || require('envjs/dom').Node,
-	HTMLDocument = HTMLDocument || require('envjs/html').HTMLDocument,
-	HTMLElement = HTMLElement || require('envjs/html').HTMLElement,
-	setTimeout = setTimeout || require('envjs/timer').setTimeout,
-	clearTimeout = clearTimeout || require('envjs/timer').clearTimeout,
-	setInterval = setInterval || require('envjs/timer').setInterval,
-	clearInterval = clearInterval || require('envjs/timer').clearInterval;
+var Envjs = Envjs || require('./platform/core').Envjs,
+	After = After || require('./platform/core').After,
+	DOMImplementation = DOMImplementation || require('./dom').DOMImplementation,
+	Document = Document || require('./dom').Document,
+	Element = Element || require('./dom').Element,
+	NodeList = NodeList || require('./dom').NodeList,
+	Node = Node || require('./dom').Node,
+	HTMLDocument = HTMLDocument || require('./html').HTMLDocument,
+	HTMLElement = HTMLElement || require('./html').HTMLElement,
+	setTimeout = setTimeout || require('./timer').setTimeout,
+	clearTimeout = clearTimeout || require('./timer').clearTimeout,
+	setInterval = setInterval || require('./timer').setInterval,
+	clearInterval = clearInterval || require('./timer').clearInterval;
 /*
  * Envjs parser.1.3.pre03 
  * Pure JavaScript Browser Environment

lib/env-js/envjs/platform/core.js

@@ -43,7 +43,7 @@ var log = {
 };
 
 if (typeof console == "undefined") {
-	console = require('envjs/console').console;
+	console = require('./console').console;
 }
 
 //eg "Mozilla"
@@ -980,7 +980,7 @@ Envjs.emit = function(event /*, arg1, arg2, etc*/ ){
     eventQueue.push({event:event, args:arguments});
 };
 
-setTimeout  = require('envjs/timer').setTimeout;
+setTimeout  = require('./../timer').setTimeout;
 
 var $warming = 10;
 
@@ -1375,7 +1375,7 @@ Envjs.exchangeHTMLDocument = function(doc, text, url) {
         frame = doc.__ownerFrame__,
         i;
     try {
-        HTMLParser = HTMLParser || require('envjs/parser').HTMLParser;
+        HTMLParser = HTMLParser || require('./../parser').HTMLParser;
         //do some cleanup so we can reuse the document
         doc.baseURI = url;
         log.debug('reseting document indexes');

lib/env-js/envjs/platform/johnson.js

@@ -1,7 +1,7 @@
 var __context__ = __this__;
 
-var Envjs = Envjs || 
-	require('envjs/platform/core').Envjs;
+var Envjs = Envjs ||
+	require('./core').Envjs;
 	require('local_settings');
 
 Envjs.platform       = "Johnson SpiderMonkey";
@@ -13,7 +13,7 @@ Envjs.argv = Ruby.ARGV;
 Envjs.exit = function(){ Ruby['exit!'](); };
 
 /*
- * Envjs johnson-env.1.3.pre03 
+ * Envjs johnson-env.1.3.pre03
  * Pure JavaScript Browser Environment
  * By John Resig <http://ejohn.org/> and the Envjs Team
  * Copyright 2008-2010 John Resig, under the MIT License
@@ -41,7 +41,7 @@ function __extend__(a,b) {
                 a[i] = b[i];
             }
         }
-    } 
+    }
     return a;
 }
 
@@ -67,7 +67,7 @@ Envjs.repl = function(){
     console.log('Envjs REPL Not Available');
 };
 (function(){
-    
+
 var log = Envjs.logger('Envjs.Platform.Johnson');
 
 Envjs.eval = function(context, source, name){
@@ -84,12 +84,12 @@ Envjs.eval = function(context, source, name){
 /**
  * synchronizes thread modifications
  * @param {Function} fn
- */	
+ */
 var	lock = new Ruby.Mutex();
 
 //NOTES:
-//context['sync'] = lambda{|wrapper| 
-//    Proc.new{|*args|lock.synchronize {wrapper['fn'].call(*args)}} 
+//context['sync'] = lambda{|wrapper|
+//    Proc.new{|*args|lock.synchronize {wrapper['fn'].call(*args)}}
 //}
 //context['sync']      = lambda{|fn| Proc.new{|*args| fn.call(*args) }}
 Envjs.sync = function(fn){
@@ -116,7 +116,7 @@ Envjs.sleep = function(milliseconds){
 	return Ruby.sleep(1.0*milliseconds/1000.0);
 };
 (function(){
-    
+
 var log = Envjs.logger('Envjs.Platform.Johnson');
 
 //Since we're running in spydermonkey I guess we can safely assume
@@ -151,7 +151,7 @@ Envjs.proxy = function(scope, parent) {
 };
 
 })();(function(){
-    
+
 var log = Envjs.logger('Envjs.XMLHttpRequest.Johnson');
 
 /**
@@ -207,7 +207,7 @@ Envjs.readFromFile = function( url ){
 		data = file.read();
 	return data;
 };
-    
+
 
 /**
  * Used to delete a local file
@@ -236,14 +236,14 @@ Envjs.connection = function(xhr, responseHandler, data){
         contentEncoding,
         responseXML,
         i;
-       
+
     if ( /^file\:/.test(url) ) {
 	    //console.log('establishing file connection');
         Envjs.localXHR(url, xhr, connection, data);
     } else {
 	    log.debug('establishing http connection %s', xhr.url);
 		try{
-			
+
 	        connection = Ruby.Net.HTTP.start(
 				urlparts.hostname,
 				Number(urlparts.port||80)
@@ -252,7 +252,7 @@ Envjs.connection = function(xhr, responseHandler, data){
 
 			path = urlparts.path+(urlparts.query?'?'+urlparts.query:'');
 		    switch(	xhr.method.toUpperCase() ){
-				case "GET": 
+				case "GET":
 					request = new Ruby.Net.HTTP.Get(path);break;
 			    case "PUT":
 					request = new Ruby.Net.HTTP.Put(path);break;
@@ -270,7 +270,7 @@ Envjs.connection = function(xhr, responseHandler, data){
 			//TODO: add gzip support
 	        //connection.putheader("Accept-Encoding", 'gzip');
 			//connection.endheaders();
-		
+
 	        //write data to output stream if required
 			//TODO: if they have set the request header for a chunked
 			//request body, implement a chunked output stream
@@ -295,7 +295,7 @@ Envjs.connection = function(xhr, responseHandler, data){
 
     if(connection){
 		[response, headers] = HTTPConnection.go(connection, request, xhr.headers, null);
-		
+
         try{
             // Stick the response headers into responseHeaders
 			var keys = headers.keys();
@@ -314,7 +314,7 @@ Envjs.connection = function(xhr, responseHandler, data){
 		log.info('%s %s %s %s', xhr.method, xhr.status, xhr.url, xhr.statusText);
         contentEncoding = xhr.getResponseHeader('content-encoding') || "utf-8";
         responseXML = null;
-        
+
         try{
             //console.log('contentEncoding %s', contentEncoding);
             if( contentEncoding.toLowerCase() == "gzip" ||
@@ -339,7 +339,7 @@ Envjs.connection = function(xhr, responseHandler, data){
 
 
     }
-    
+
     if(responseHandler){
         log.debug('calling ajax response handler');
         if(!xhr.async){