Re-added scripting support.

plugin.yml

@@ -246,9 +246,10 @@ commands:
     brush:
         description: Switch to the sphere brush tool
         usage: /<command> <id> [radius] [no-replace?]
-    reloadwe:
-        description: Switch to the replacing sphere brush tool
-        usage: /<command> <id> [radius]
+    
+    cs:
+        description: Execute a CraftScript
+        usage: /<command> <filename> [arg1 [args2 [arg3 [...]]]]
         
     reloadwe:
         description: Reload WorldEdit's configuration

src/com/sk89q/worldedit/WorldEditController.java

@@ -27,11 +27,15 @@ import java.util.HashSet;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 import java.io.*;
+import javax.script.ScriptEngine;
+import javax.script.ScriptEngineManager;
+import javax.script.ScriptException;
 import com.sk89q.util.StringUtil;
 import com.sk89q.worldedit.bags.BlockBag;
 import com.sk89q.worldedit.blocks.*;
 import com.sk89q.worldedit.data.*;
 import com.sk89q.worldedit.filters.*;
+import com.sk89q.worldedit.scripting.ScriptContext;
 import com.sk89q.worldedit.snapshots.*;
 import com.sk89q.worldedit.superpickaxe.*;
 import com.sk89q.worldedit.regions.*;
@@ -173,6 +177,8 @@ public class WorldEditController {
         commands.put("/repl", "[ID] - Switch to the block replacer tool");
         commands.put("/brush", "[ID] <Radius> <NoReplace?> - Switch to the sphere brush tool");
         commands.put("/rbrush", "[ID] <Radius> - Switch to the replacing sphere brush tool");
+
+        commands.put("/cs", "[Filename] <args...> - Execute a CraftScript");
     }
 
     /**
@@ -1700,6 +1706,17 @@ public class WorldEditController {
                 }
             }
 
+            return true;
+
+        // CraftScript
+        } else if (split[0].equalsIgnoreCase("/cs")) {
+            checkArgs(split, 1, -1, split[0]);
+            
+            String[] args = new String[split.length - 1];
+            System.arraycopy(split, 1, args, 0, split.length - 1);
+            
+            runScript(player, split[1], args);
+            
             return true;
         }
 
@@ -2091,4 +2108,86 @@ public class WorldEditController {
 
         return true;
     }
+    
+    /**
+     * Executes a WorldEdit script.
+     * 
+     * @param player
+     * @param filename
+     * @param args
+     */
+    public void runScript(LocalPlayer player, String filename, String[] args) {
+        File dir = new File("craftscripts");
+        File f = new File(dir, filename);
+
+        if (!filename.matches("^[A-Za-z0-9_\\- \\./\\\\'\\$@~!%\\^\\*\\(\\)\\[\\]\\+\\{\\},\\?]+\\.[A-Za-z0-9]+$")) {
+            player.printError("Invalid filename. Don't forget the extension.");
+            return;
+        }
+        
+        int index = filename.lastIndexOf(".");
+        String ext = filename.substring(index + 1, filename.length());
+        
+        if (!ext.equalsIgnoreCase("js")) {
+            player.printError("Only .js scripts are currently supported");
+            return;
+        }
+
+        try {
+            String filePath = f.getCanonicalPath();
+            String dirPath = dir.getCanonicalPath();
+
+            if (!filePath.substring(0, dirPath.length()).equals(dirPath)) {
+                player.printError("Script could not read or it does not exist.");
+                return;
+            }
+        } catch (IOException e) {
+            player.printError("Script could not read or it does not exist: " + e.getMessage());
+            return;
+        }
+        
+        String script;
+        
+        try {
+            FileInputStream file = new FileInputStream(f);
+            DataInputStream in = new DataInputStream (file);
+            byte[] data = new byte[in.available()];
+            in.readFully(data);
+            in.close ();
+            script = new String(data, 0, data.length, "utf-8");
+        } catch (FileNotFoundException e) {
+            player.printError("Script does not exist: " + filename);
+            return;
+        } catch (IOException e) {
+            player.printError("Script read error: " + e.getMessage());
+            return;
+        }
+
+        ScriptEngineManager manager = new ScriptEngineManager();
+        ScriptEngine engine = manager.getEngineByExtension(ext);
+        
+        if (engine == null) {
+            player.printError("Failed to load the scripting engine.");
+            return;
+        }
+        
+        LocalSession session = getSession(player);
+        ScriptContext context = new ScriptContext(this, server, config, session, player);
+        
+        engine.put("argv", args);
+        engine.put("ctx", context);
+        engine.put("player", player);
+        
+        try {
+            engine.eval(script);
+        } catch (ScriptException e) {
+            e.printStackTrace();
+            player.printError("Script encountered an error: " + e.getMessage());
+            return;
+        } finally {
+            for (EditSession editSession : context._getEditSessions()) {
+                session.remember(editSession);
+            }
+        }
+    }
 }

src/com/sk89q/worldedit/scripting/ScriptContext.java

@@ -0,0 +1,90 @@
+// $Id$
+/*
+ * WorldEdit
+ * Copyright (C) 2010 sk89q <http://www.sk89q.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package com.sk89q.worldedit.scripting;
+
+import java.util.ArrayList;
+import java.util.List;
+import com.sk89q.worldedit.DisallowedItemException;
+import com.sk89q.worldedit.EditSession;
+import com.sk89q.worldedit.LocalConfiguration;
+import com.sk89q.worldedit.LocalPlayer;
+import com.sk89q.worldedit.LocalSession;
+import com.sk89q.worldedit.ServerInterface;
+import com.sk89q.worldedit.UnknownItemException;
+import com.sk89q.worldedit.WorldEditController;
+import com.sk89q.worldedit.blocks.BaseBlock;
+
+public class ScriptContext {
+    private WorldEditController controller;
+    private LocalPlayer player;
+    private LocalConfiguration config;
+    private LocalSession session;
+    private ServerInterface server;
+    private List<EditSession> editSessions = new ArrayList<EditSession>();
+    
+    public ScriptContext(WorldEditController controller, ServerInterface server,
+            LocalConfiguration config, LocalSession session, LocalPlayer player) {
+        this.controller = controller;
+        this.player = player;
+        this.config = config;
+        this.server = server;
+        this.session = session;
+    }
+    
+    public EditSession startEditSession() {
+        EditSession editSession =
+                new EditSession(server, player.getWorld(),
+                        session.getBlockChangeLimit(), session.getBlockBag(player));
+        editSessions.add(editSession);
+        return editSession;
+    }
+    
+    public LocalPlayer getPlayer() {
+        return player;
+    }
+    
+    public LocalSession getSession() {
+        return session;
+    }
+    
+    public LocalConfiguration getConfiguration() {
+        return config;
+    }
+    
+    public List<EditSession> _getEditSessions() {
+        return editSessions;
+    }
+    
+    public void print(String msg) {
+        player.print(msg);
+    }
+    
+    public void error(String msg) {
+        player.printError(msg);
+    }
+    
+    public BaseBlock getBlock(String arg) throws UnknownItemException, DisallowedItemException {
+        return controller.getBlock(player, arg, false);
+    }
+    
+    public BaseBlock getAnyBlock(String arg) throws UnknownItemException, DisallowedItemException {
+        return controller.getBlock(player, arg, true);
+    }
+}