Few tweaks to schematic loading and error fixes.

* Not all EntityTypes in Bukkit have the correct enum name.
* Don't read entire schematic files to list. Go off file extension only.
   (Reading in files is more accurate, but slow.)
* Enforce extensions. (Due to the above, while you can technically make a
   schematic called 'test.txt', it's better that we save it as
   'test.txt.schem'.)
* Fix a few minor warnings.

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/WorldEditPlugin.java

@@ -160,7 +160,10 @@ public class WorldEditPlugin extends JavaPlugin implements TabCompleter {
         }
         // Entity
         for (org.bukkit.entity.EntityType entityType : org.bukkit.entity.EntityType.values()) {
-            EntityType.REGISTRY.register("minecraft:" + entityType.name().toLowerCase(), new EntityType("minecraft:" + entityType.name().toLowerCase()));
+            String mcid = entityType.getName();
+            if (mcid != null) {
+                EntityType.REGISTRY.register("minecraft:" + mcid.toLowerCase(), new EntityType("minecraft:" + mcid.toLowerCase()));
+            }
         }
         // Tags
         try {

worldedit-core/src/main/java/com/sk89q/worldedit/WorldEdit.java

@@ -67,6 +67,7 @@ import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
@@ -90,11 +91,11 @@ import javax.script.ScriptException;
  * method {@link WorldEdit#getInstance()}, which is shared among all
  * platforms within the same classloader hierarchy.</p>
  */
-public class WorldEdit {
+public final class WorldEdit {
 
     public static final Logger logger = Logger.getLogger(WorldEdit.class.getCanonicalName());
 
-    private final static WorldEdit instance = new WorldEdit();
+    private static final WorldEdit instance = new WorldEdit();
     private static String version;
 
     private final EventBus eventBus = new EventBus();
@@ -274,14 +275,15 @@ public class WorldEdit {
             }
         } else {
             List<String> exts = extensions == null ? ImmutableList.of(defaultExt) : Lists.asList(defaultExt, extensions);
-            return getSafeFileWithExtensions(dir, filename,  exts, isSave);
+            f = getSafeFileWithExtensions(dir, filename, exts, isSave);
         }
 
         try {
             String filePath = f.getCanonicalPath();
             String dirPath = dir.getCanonicalPath();
 
-            if (!filePath.substring(0, dirPath.length()).equals(dirPath) && !getConfiguration().allowSymlinks) {
+            if ((filePath.length() < dirPath.length() || !filePath.substring(0, dirPath.length()).equals(dirPath))
+                    && !getConfiguration().allowSymlinks) {
                 throw new FilenameResolutionException(filename,
                         "Path is outside allowable root");
             }
@@ -301,7 +303,7 @@ public class WorldEdit {
             }
         }
         File result = null;
-        for (Iterator<String> iter = exts.iterator(); iter.hasNext() && (result == null || !result.exists());) {
+        for (Iterator<String> iter = exts.iterator(); iter.hasNext() && (result == null || (!isSave && !result.exists()));) {
             result = getSafeFileWithExtension(dir, filename, iter.next());
         }
         if (result == null) {
@@ -311,8 +313,12 @@ public class WorldEdit {
     }
 
     private File getSafeFileWithExtension(File dir, String filename, String extension) {
-        if (extension != null && filename.lastIndexOf('.') == -1) {
-            filename += "." + extension;
+        if (extension != null) {
+            int dot = filename.lastIndexOf('.');
+            if (dot < 0 || !filename.substring(dot).equalsIgnoreCase(extension))
+            {
+                filename += "." + extension;
+            }
         }
 
         if (!checkFilename(filename)) {
@@ -618,7 +624,7 @@ public class WorldEdit {
             byte[] data = new byte[in.available()];
             in.readFully(data);
             in.close();
-            script = new String(data, 0, data.length, "utf-8");
+            script = new String(data, 0, data.length, StandardCharsets.UTF_8);
         } catch (IOException e) {
             player.printError("Script read error: " + e.getMessage());
             return;

worldedit-core/src/main/java/com/sk89q/worldedit/command/SchematicCommands.java

@@ -21,6 +21,8 @@ package com.sk89q.worldedit.command;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 
+import com.google.common.collect.Multimap;
+import com.google.common.io.Files;
 import com.sk89q.minecraft.util.commands.Command;
 import com.sk89q.minecraft.util.commands.CommandContext;
 import com.sk89q.minecraft.util.commands.CommandException;
@@ -196,7 +198,7 @@ public class SchematicCommands {
         String filename = args.getString(0);
 
         File dir = worldEdit.getWorkingDirectoryFile(config.saveDir);
-        File f = worldEdit.getSafeSaveFile(player, dir, filename, "schematic", "schematic");
+        File f = worldEdit.getSafeOpenFile(player, dir, filename, "schematic", ClipboardFormats.getFileExtensionArray());
 
         if (!f.exists()) {
             player.printError("Schematic " + filename + " does not exist!");
@@ -209,6 +211,11 @@ public class SchematicCommands {
         }
 
         player.print(filename + " has been deleted.");
+        try {
+            log.info(player.getName() + " deleted " + f.getCanonicalPath());
+        } catch (IOException e) {
+            log.info(player.getName() + " deleted " + f.getAbsolutePath());
+        }
     }
 
     @Command(
@@ -245,7 +252,8 @@ public class SchematicCommands {
             help = "List all schematics in the schematics directory\n" +
                     " -d sorts by date, oldest first\n" +
                     " -n sorts by date, newest first\n" +
-                    " -p <page> prints the requested page\n"
+                    " -p <page> prints the requested page\n" +
+                    "Note: Format is not thoroughly verified until loading."
     )
     @CommandPermissions("worldedit.schematic.list")
     public void list(Actor actor, CommandContext args, @Switch('p') @Optional("1") int page) throws WorldEditException {
@@ -328,10 +336,13 @@ public class SchematicCommands {
             StringBuilder build = new StringBuilder();
 
             build.append("\u00a72");
-            ClipboardFormat format = ClipboardFormats.findByFile(file);
+            //ClipboardFormat format = ClipboardFormats.findByFile(file);
+            Multimap<String, ClipboardFormat> exts = ClipboardFormats.getFileExtensionMap();
+            ClipboardFormat format = exts.get(Files.getFileExtension(file.getName()))
+                    .stream().findFirst().orElse(null);
             boolean inRoot = file.getParentFile().getName().equals(prefix);
             build.append(inRoot ? file.getName() : file.getPath().split(Pattern.quote(prefix + File.separator))[1])
-                    .append(": ").append(format == null ? "Unknown" : format.getName());
+                    .append(": ").append(format == null ? "Unknown" : format.getName() + "*");
             result.add(build.toString());
         }
         return result;

worldedit-core/src/main/java/com/sk89q/worldedit/extent/clipboard/io/NBTSchematicReader.java

@@ -46,9 +46,7 @@ public abstract class NBTSchematicReader implements ClipboardReader {
     }
 
     @Nullable
-    protected static <T extends Tag> T getTag(CompoundTag tag, Class<T> expected, String key) {
-        Map<String, Tag> items = tag.getValue();
-
+    protected static <T extends Tag> T getTag(Map<String, Tag> items, String key, Class<T> expected) {
         if (!items.containsKey(key)) {
             return null;
         }

worldedit-core/src/main/java/com/sk89q/worldedit/extent/clipboard/io/SpongeSchematicReader.java

@@ -88,16 +88,16 @@ public class SpongeSchematicReader extends NBTSchematicReader {
         int version = requireTag(schematic, "Version", IntTag.class).getValue();
         switch (version) {
             case 1:
-                return readVersion1(schematic);
+                return readVersion1(schematicTag);
             default:
                 throw new IOException("This schematic version is currently not supported");
         }
     }
 
-    private Clipboard readVersion1(Map<String, Tag> schematic) throws IOException {
+    private Clipboard readVersion1(CompoundTag schematicTag) throws IOException {
         BlockVector3 origin;
         Region region;
-
+        Map<String, Tag> schematic = schematicTag.getValue();
         Map<String, Tag> metadata = requireTag(schematic, "Metadata", CompoundTag.class).getValue();
 
         int width = requireTag(schematic, "Width", ShortTag.class).getValue();
@@ -143,7 +143,7 @@ public class SpongeSchematicReader extends NBTSchematicReader {
             try {
                 state = WorldEdit.getInstance().getBlockFactory().parseFromInput(palettePart, parserContext).toImmutableState();
             } catch (InputParseException e) {
-                throw new IOException("Invalid BlockState in schematic: " + palettePart + ". Are you missing a mod of using a schematic made in a newer version of Minecraft?");
+                throw new IOException("Invalid BlockState in schematic: " + palettePart + ". Are you missing a mod or using a schematic made in a newer version of Minecraft?");
             }
             palette.put(id, state);
         }