Adding experimental require() function like commonjs (barebones support for require() and exports)

src/main/javascript/core/_scriptcraft.js

@@ -310,6 +310,31 @@ var server = org.bukkit.Bukkit.server;
     var jsPluginsRootDir = parentFileObj.getParentFile();
     var jsPluginsRootDirName = _canonize(jsPluginsRootDir);
 
+    /*
+      wph 20131215 Experimental 
+     */
+    var _loadedModules = {};
+    var _require = function(path)
+    {
+        var file = new java.io.File(path);
+        var canonizedFilename = _canonize(file);
+        if (_loadedModules[canonizedFilename]){
+            return _loadedModules[canonizedFilename];
+        }
+        if (verbose){
+            print("loading module " + canonizedFilename);
+        }
+        var reader = new java.io.FileReader(file);
+        var br = new java.io.BufferedReader(reader);
+        var code = "";
+        while ((r = br.readLine()) !== null) code += r + "\n";
+        code = "var result = {};(function(exports){ " + code + "; return exports;}(result))";
+        _loadedModules[canonizedFilename] = __engine.eval(code);
+        return _loadedModules[canonizedFilename];
+    };
+    global.loadedModules = _loadedModules;
+    global.require = _require;
+
 
     var _loaded = {};
     /*
@@ -317,23 +342,15 @@ var server = org.bukkit.Bukkit.server;
      */
     var _load = function(filename,warnOnFileNotFound)
     {
-        var filenames = [];
-        if (filename.constructor == Array)
-            filenames = filename;
-        else
-            filenames = [filename];
-        
         var result = null;
         
-        for (var i =0;i < filenames.length; i++) {
+        var file = new java.io.File(filename);
-
-            var file = new java.io.File(filenames[0]);
         var canonizedFilename = _canonize(file);
         //
         // wph 20130123 don't load the same file more than once.
         //
         if (_loaded[canonizedFilename])
-                continue;
+            return _loaded[canonizedFilename];
         
         if (verbose)
             print("loading " + canonizedFilename);
@@ -357,17 +374,21 @@ var server = org.bukkit.Bukkit.server;
                 }
                 
                 result = __engine.eval(code);
-                    _loaded[canonizedFilename] = true;
+                _loaded[canonizedFilename] = result || true;
-                    reader.close();
             }catch (e){
                 __plugin.logger.severe("Error evaluating " + canonizedFilename + ", " + e );
             }
+            finally {
+                try {
+                    reader.close();
+                }catch (re){
+                    // fail silently on reader close error
+                }
+            }
         }else{
             if (warnOnFileNotFound) 
                 __plugin.logger.warning(canonizedFilename + " not found");
         }
-        }
-        
         return result;
     };
     /*
@@ -472,7 +493,7 @@ var server = org.bukkit.Bukkit.server;
         // don't load plugin more than once
         //
         if (typeof _plugins[moduleName] != "undefined")
-            return;
+            return _plugins[moduleName].module;
 
         var pluginData = {persistent: isPersistent, module: moduleObject};
         moduleObject.store = moduleObject.store || {};