init, thx MrExtremez

2006Redone file_server/src/org/apollo/jagcached/resource/CombinedResourceProvider.java

@@ -0,0 +1,40 @@
+package org.apollo.jagcached.resource;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+
+/**
+ * A resource provider composed of multiple resource providers.
+ * @author Graham Edgecombe
+ */
+public final class CombinedResourceProvider extends ResourceProvider {
+	
+	/**
+	 * An array of resource providers.
+	 */
+	private final ResourceProvider[] providers;
+	
+	/**
+	 * Creates the combined resource providers.
+	 * @param providers The providers this provider delegates to.
+	 */
+	public CombinedResourceProvider(ResourceProvider... providers) {
+		this.providers = providers;
+	}
+
+	@Override
+	public boolean accept(String path) throws IOException {
+		return true;
+	}
+
+	@Override
+	public ByteBuffer get(String path) throws IOException {
+		for (ResourceProvider provider : providers) {
+			if (provider.accept(path)) {
+				return provider.get(path);
+			}
+		}
+		return null;
+	}
+
+}

2006Redone file_server/src/org/apollo/jagcached/resource/HypertextResourceProvider.java

@@ -0,0 +1,64 @@
+package org.apollo.jagcached.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.MapMode;
+
+/**
+ * A {@link ResourceProvider} which provides additional hypertext resources.
+ * @author Graham Edgecombe
+ */
+public final class HypertextResourceProvider extends ResourceProvider {
+	
+	/**
+	 * The base directory from which documents are served.
+	 */
+	private final File base;
+	
+	/**
+	 * Creates a new hypertext resource provider with the specified base
+	 * directory.
+	 * @param base The base directory.
+	 */
+	public HypertextResourceProvider(File base) {
+		this.base = base;
+	}
+
+	@Override
+	public boolean accept(String path) throws IOException {
+		File f = new File(base, path);
+		URI target = f.toURI().normalize();
+		if (target.toASCIIString().startsWith(base.toURI().normalize().toASCIIString())) {
+			if (f.isDirectory()) {
+				f = new File(f, "index.html");
+			}
+			return f.exists();
+		}
+		return false;
+	}
+
+	@Override
+	public ByteBuffer get(String path) throws IOException {
+		File f = new File(base, path);
+		if (f.isDirectory()) {
+			f = new File(f, "index.html");
+		}
+		if (!f.exists()) {
+			return null;
+		}
+		
+		RandomAccessFile raf = new RandomAccessFile(f, "r");
+		ByteBuffer buf;
+		try {
+			buf = raf.getChannel().map(MapMode.READ_ONLY, 0, raf.length());
+		} finally {
+			raf.close();
+		}
+		
+		return buf;
+	}
+
+}

2006Redone file_server/src/org/apollo/jagcached/resource/ResourceProvider.java

@@ -0,0 +1,30 @@
+package org.apollo.jagcached.resource;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+
+/**
+ * A class which provides resources.
+ * @author Graham Edgecombe
+ */
+public abstract class ResourceProvider {
+
+	/**
+	 * Checks that this provider can fulfil a request to the specified
+	 * resource.
+	 * @param path The path to the resource, e.g. {@code /crc}.
+	 * @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;
+	
+	/**
+	 * Gets a resource by its path.
+	 * @param path The path.
+	 * @return The resource, or {@code null} if it doesn't exist.
+	 * @throws IOException if an I/O error occurs.
+	 */
+	public abstract ByteBuffer get(String path) throws IOException;
+
+}

2006Redone file_server/src/org/apollo/jagcached/resource/VirtualResourceProvider.java

@@ -0,0 +1,70 @@
+package org.apollo.jagcached.resource;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+
+import org.apollo.jagcached.fs.IndexedFileSystem;
+
+/**
+ * A {@link ResourceProvider} which maps virtual resources (such as
+ * {@code /media}) to files in an {@link IndexedFileSystem}.
+ * @author Graham Edgecombe
+ */
+public final class VirtualResourceProvider extends ResourceProvider {
+	
+	/**
+	 * An array of valid prefixes.
+	 */
+	private static final String[] VALID_PREFIXES = {
+		"crc", "title", "config", "interface", "media", "versionlist",
+		"textures", "wordenc", "sounds"
+	};
+	
+	/**
+	 * The file system.
+	 */
+	private final IndexedFileSystem fs;
+	
+	/**
+	 * Creates a new virtual resource provider with the specified file system.
+	 * @param fs The file system.
+	 */
+	public VirtualResourceProvider(IndexedFileSystem fs) {
+		this.fs = fs;
+	}
+
+	@Override
+	public boolean accept(String path) throws IOException {
+		for (String prefix : VALID_PREFIXES) {
+			if (path.startsWith("/" + prefix)) {
+				return true;
+			}
+		}
+		return false;
+	}
+
+	@Override
+	public ByteBuffer get(String path) throws IOException {
+		if (path.startsWith("/crc")) {
+			return fs.getCrcTable();
+		} else if (path.startsWith("/title")) {
+			return fs.getFile(0, 1);
+		} else if (path.startsWith("/config")) {
+			return fs.getFile(0, 2);
+		} else if (path.startsWith("/interface")) {
+			return fs.getFile(0, 3);
+		} else if (path.startsWith("/media")) {
+			return fs.getFile(0, 4);
+		} else if (path.startsWith("/versionlist")) {
+			return fs.getFile(0, 5);
+		} else if (path.startsWith("/textures")) {
+			return fs.getFile(0, 6);
+		} else if (path.startsWith("/wordenc")) {
+			return fs.getFile(0, 7);
+		} else if (path.startsWith("/sounds")) {
+			return fs.getFile(0, 8);
+		}
+		return null;
+	}
+
+}