Merge branch 'resource'.

src/org/apollo/update/HttpRequestWorker.java

@@ -9,11 +9,13 @@ import io.netty.handler.codec.http.HttpRequest;
 import io.netty.handler.codec.http.HttpResponse;
 import io.netty.handler.codec.http.HttpResponseStatus;
 
-import java.io.File;
 import java.io.IOException;
 import java.nio.ByteBuffer;
 import java.nio.charset.Charset;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.Date;
+import java.util.Optional;
 
 import org.apollo.fs.IndexedFileSystem;
 import org.apollo.update.resource.CombinedResourceProvider;
@@ -21,6 +23,8 @@ import org.apollo.update.resource.HypertextResourceProvider;
 import org.apollo.update.resource.ResourceProvider;
 import org.apollo.update.resource.VirtualResourceProvider;
 
+import com.google.common.base.Charsets;
+
 /**
  * A worker which services HTTP requests.
  * 
@@ -31,7 +35,7 @@ public final class HttpRequestWorker extends RequestWorker<HttpRequest, Resource
 	/**
 	 * The default character set.
 	 */
-	private static final Charset CHARACTER_SET = Charset.forName("ISO-8859-1");
+	private static final Charset CHARACTER_SET = Charsets.ISO_8859_1;
 
 	/**
 	 * The value of the server header.
@@ -41,7 +45,7 @@ public final class HttpRequestWorker extends RequestWorker<HttpRequest, Resource
 	/**
 	 * The directory with web files.
 	 */
-	private static final File WWW_DIRECTORY = new File("./data/www/");
+	private static final Path WWW_DIRECTORY = Paths.get("data/www");
 
 	/**
 	 * Creates the HTTP request worker.
@@ -50,8 +54,7 @@ public final class HttpRequestWorker extends RequestWorker<HttpRequest, Resource
 	 * @param fs The file system.
 	 */
 	public HttpRequestWorker(UpdateDispatcher dispatcher, IndexedFileSystem fs) {
-		super(dispatcher, new CombinedResourceProvider(new VirtualResourceProvider(fs), new HypertextResourceProvider(
+		super(dispatcher, new CombinedResourceProvider(new VirtualResourceProvider(fs), new HypertextResourceProvider(WWW_DIRECTORY)));
-				WWW_DIRECTORY)));
 	}
 
 	/**
@@ -115,21 +118,18 @@ public final class HttpRequestWorker extends RequestWorker<HttpRequest, Resource
 	@Override
 	protected void service(ResourceProvider provider, Channel channel, HttpRequest request) throws IOException {
 		String path = request.getUri();
-		ByteBuffer buf = provider.get(path);
+		Optional<ByteBuffer> buf = provider.get(path);
 
-		ByteBuf wrapped;
 		HttpResponseStatus status = HttpResponseStatus.OK;
-
 		String mime = getMimeType(request.getUri());
 
-		if (buf == null) {
+		if (!buf.isPresent()) {
 			status = HttpResponseStatus.NOT_FOUND;
-			wrapped = createErrorPage(status, "The page you requested could not be found.");
 			mime = "text/html";
-		} else {
-			wrapped = Unpooled.wrappedBuffer(buf);
 		}
 
+		ByteBuf wrapped = buf.isPresent() ? Unpooled.wrappedBuffer(buf.get()) : createErrorPage(status, "The page you requested could not be found.");
+
 		HttpResponse response = new DefaultHttpResponse(request.getProtocolVersion(), status);
 
 		response.headers().set("Date", new Date());

src/org/apollo/update/JagGrabRequestWorker.java

@@ -7,6 +7,7 @@ import io.netty.channel.ChannelFutureListener;
 
 import java.io.IOException;
 import java.nio.ByteBuffer;
+import java.util.Optional;
 
 import org.apollo.fs.IndexedFileSystem;
 import org.apollo.net.codec.jaggrab.JagGrabRequest;
@@ -38,12 +39,13 @@ public final class JagGrabRequestWorker extends RequestWorker<JagGrabRequest, Re
 
 	@Override
 	protected void service(ResourceProvider provider, Channel channel, JagGrabRequest request) throws IOException {
-		ByteBuffer buf = provider.get(request.getFilePath());
+		Optional<ByteBuffer> buffer = provider.get(request.getFilePath());
-		if (buf == null) {
+
-			channel.close();
+		if (buffer.isPresent()) {
-		} else {
+			ByteBuf wrapped = Unpooled.wrappedBuffer(buffer.get());
-			ByteBuf wrapped = Unpooled.wrappedBuffer(buf);
 			channel.writeAndFlush(new JagGrabResponse(wrapped)).addListener(ChannelFutureListener.CLOSE);
+		} else {
+			channel.close();
 		}
 	}
 

src/org/apollo/update/resource/CombinedResourceProvider.java

@@ -2,13 +2,14 @@ package org.apollo.update.resource;
 
 import java.io.IOException;
 import java.nio.ByteBuffer;
+import java.util.Optional;
 
 /**
  * A resource provider composed of multiple resource providers.
  * 
  * @author Graham
  */
-public final class CombinedResourceProvider extends ResourceProvider {
+public final class CombinedResourceProvider implements ResourceProvider {
 
 	/**
 	 * An array of resource providers.
@@ -30,13 +31,13 @@ public final class CombinedResourceProvider extends ResourceProvider {
 	}
 
 	@Override
-	public ByteBuffer get(String path) throws IOException {
+	public Optional<ByteBuffer> get(String path) throws IOException {
 		for (ResourceProvider provider : providers) {
 			if (provider.accept(path)) {
 				return provider.get(path);
 			}
 		}
-		return null;
+		return Optional.empty();
 	}
 
 }

src/org/apollo/update/resource/HypertextResourceProvider.java

@@ -1,62 +1,67 @@
 package org.apollo.update.resource;
 
-import java.io.File;
 import java.io.IOException;
-import java.io.RandomAccessFile;
 import java.net.URI;
 import java.nio.ByteBuffer;
+import java.nio.channels.FileChannel;
 import java.nio.channels.FileChannel.MapMode;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Optional;
 
 /**
  * A {@link ResourceProvider} which provides additional hypertext resources.
  * 
  * @author Graham
  */
-public final class HypertextResourceProvider extends ResourceProvider {
+public final class HypertextResourceProvider implements ResourceProvider {
 
 	/**
-	 * The base directory from which documents are served.
+	 * The base {@link Path} from which documents are served.
 	 */
-	private final File base;
+	private final Path base;
 
 	/**
 	 * Creates a new hypertext resource provider with the specified base directory.
 	 * 
 	 * @param base The base directory.
 	 */
-	public HypertextResourceProvider(File base) {
+	public HypertextResourceProvider(Path base) {
 		this.base = base;
 	}
 
 	@Override
 	public boolean accept(String path) throws IOException {
-		File file = new File(base, path);
+		Path file = base.resolve(path);
-		URI target = file.toURI().normalize();
+
-		if (target.toASCIIString().startsWith(base.toURI().normalize().toASCIIString())) {
+		URI target = file.toUri().normalize();
-			if (file.isDirectory()) {
+		if (!target.toASCIIString().startsWith(base.toUri().normalize().toASCIIString())) {
-				file = new File(file, "index.html");
+			return false;
-			}
-			return file.exists();
 		}
-		return false;
+
+		if (Files.isDirectory(file)) {
+			file = file.resolve("index.html");
+		}
+
+		return Files.exists(file);
 	}
 
 	@Override
-	public ByteBuffer get(String path) throws IOException {
+	public Optional<ByteBuffer> get(String path) throws IOException {
-		File file = new File(base, path);
+		Path root = base.resolve(path);
-		if (file.isDirectory()) {
+
-			file = new File(file, "index.html");
+		if (Files.isDirectory(root)) {
-		}
+			root = root.resolve("index.html");
-		if (!file.exists()) {
-			return null;
 		}
 
-		ByteBuffer buffer;
+		if (!Files.exists(root)) {
-		try (RandomAccessFile raf = new RandomAccessFile(file, "r")) {
+			return Optional.empty();
-			buffer = raf.getChannel().map(MapMode.READ_ONLY, 0, raf.length());
 		}
 
-		return buffer;
+		try (FileChannel channel = FileChannel.open(root)) {
+			ByteBuffer buf = channel.map(MapMode.READ_ONLY, 0, Files.size(root));
+			return Optional.of(buf);
+		}
 	}
 
 }

src/org/apollo/update/resource/ResourceProvider.java

@@ -2,13 +2,14 @@ package org.apollo.update.resource;
 
 import java.io.IOException;
 import java.nio.ByteBuffer;
+import java.util.Optional;
 
 /**
  * A class which provides resources.
  * 
  * @author Graham
  */
-public abstract class ResourceProvider {
+public interface ResourceProvider {
 
 	/**
 	 * Checks that this provider can fulfil a request to the specified resource.
@@ -17,15 +18,16 @@ public abstract class ResourceProvider {
 	 * @return {@code true} if the provider can fulfil a request to the resource, {@code false} otherwise.
 	 * @throws IOException If an I/O error occurs.
 	 */
-	public abstract boolean accept(String path) throws IOException;
+	public boolean accept(String path) throws IOException;
 
 	/**
-	 * Gets a resource by its path.
+	 * The resource data, as a {@link ByteBuffer}, wrapped in an {@link Optional}.
 	 * 
-	 * @param path The path.
+	 * @param path The path to the resource.
-	 * @return The resource, or {@code null} if it doesn't exist.
+	 * @return A {@code ByteBuffer} representation of a resource if it exists otherwise {@link Optional#empty()} is
-	 * @throws IOException If an I/O error occurs.
+	 *         returned.
+	 * @throws IOException If some I/O exception occurs.
 	 */
-	public abstract ByteBuffer get(String path) throws IOException;
+	public Optional<ByteBuffer> get(String path) throws IOException;
 
 }

src/org/apollo/update/resource/VirtualResourceProvider.java

@@ -2,6 +2,10 @@ package org.apollo.update.resource;
 
 import java.io.IOException;
 import java.nio.ByteBuffer;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Objects;
+import java.util.Optional;
 
 import org.apollo.fs.IndexedFileSystem;
 
@@ -11,13 +15,12 @@ import org.apollo.fs.IndexedFileSystem;
  * 
  * @author Graham
  */
-public final class VirtualResourceProvider extends ResourceProvider {
+public final class VirtualResourceProvider implements ResourceProvider {
 
 	/**
-	 * An array of valid prefixes.
+	 * A {@link List} of valid prefixes.
 	 */
-	private static final String[] VALID_PREFIXES = { "crc", "title", "config", "interface", "media", "versionlist", "textures",
+	private static final List<String> VALID_PREFIXES = Arrays.asList("/crc", "/title", "/config", "/interface", "/media", "/versionlist", "/textures", "/wordenc", "/sounds");
-			"wordenc", "sounds" };
 
 	/**
 	 * The file system.
@@ -35,36 +38,34 @@ public final class VirtualResourceProvider extends ResourceProvider {
 
 	@Override
 	public boolean accept(String path) throws IOException {
-		for (String prefix : VALID_PREFIXES) {
+		Objects.requireNonNull(path);
-			if (path.startsWith("/" + prefix)) {
+
-				return true;
+		return VALID_PREFIXES.stream().anyMatch(path::startsWith);
-			}
-		}
-		return false;
 	}
 
 	@Override
-	public ByteBuffer get(String path) throws IOException {
+	public Optional<ByteBuffer> get(String path) throws IOException {
 		if (path.startsWith("/crc")) {
-			return fs.getCrcTable();
+			return Optional.of(fs.getCrcTable());
 		} else if (path.startsWith("/title")) {
-			return fs.getFile(0, 1);
+			return Optional.of(fs.getFile(0, 1));
 		} else if (path.startsWith("/config")) {
-			return fs.getFile(0, 2);
+			return Optional.of(fs.getFile(0, 2));
 		} else if (path.startsWith("/interface")) {
-			return fs.getFile(0, 3);
+			return Optional.of(fs.getFile(0, 3));
 		} else if (path.startsWith("/media")) {
-			return fs.getFile(0, 4);
+			return Optional.of(fs.getFile(0, 4));
 		} else if (path.startsWith("/versionlist")) {
-			return fs.getFile(0, 5);
+			return Optional.of(fs.getFile(0, 5));
 		} else if (path.startsWith("/textures")) {
-			return fs.getFile(0, 6);
+			return Optional.of(fs.getFile(0, 6));
 		} else if (path.startsWith("/wordenc")) {
-			return fs.getFile(0, 7);
+			return Optional.of(fs.getFile(0, 7));
 		} else if (path.startsWith("/sounds")) {
-			return fs.getFile(0, 8);
+			return Optional.of(fs.getFile(0, 8));
 		}
-		return null;
+
+		return Optional.empty();
 	}
 
 }