práctica 3, falta la última parte

2026-07-01 15:27:21 +02:00 · 2026-03-04 20:27:45 +01:00
commit aa8b7b30fb
21 changed files with 2705 additions and 0 deletions
--- a/es/um/redes/nanoFiles/shell/NFCommands.java
+++ b/es/um/redes/nanoFiles/shell/NFCommands.java
@@ -0,0 +1,114 @@
+package es.um.redes.nanoFiles.shell;
+
+public class NFCommands {
+	/**
+	 * Códigos para todos los comandos soportados por el shell
+	 */
+	public static final byte COM_INVALID = 0;
+	public static final byte COM_QUIT = 1;
+	public static final byte COM_MYFILES = 2;
+	public static final byte COM_PING = 3;
+	public static final byte COM_FILELIST_DIR = 4;
+	public static final byte COM_SERVE = 11;
+	public static final byte COM_DOWNLOAD_DIR = 25;
+	public static final byte COM_DOWNLOAD_PEER = 26;
+	public static final byte COM_HELP = 50;
+	public static final byte COM_SOCKET_IN = 100;
+	public static final byte COM_PEERLIST = 12;
+	public static final byte COM_FILELIST_PEER = 13;
+// Upload command removed
+	public static final byte COM_NICK = 14;
+
+
+	
+	/**
+	 * Códigos de los comandos válidos que puede
+	 * introducir el usuario del shell. El orden
+	 * es importante para relacionarlos con la cadena
+	 * que debe introducir el usuario y con la ayuda
+	 */
+	private static final Byte[] _valid_user_commands = { 
+		COM_QUIT,
+		COM_MYFILES,
+		COM_PING,
+		COM_FILELIST_DIR,
+		COM_FILELIST_PEER,
+		COM_SERVE,
+		COM_PEERLIST,
+		COM_DOWNLOAD_DIR,
+		COM_DOWNLOAD_PEER,
+		COM_NICK,
+		COM_HELP,
+		COM_SOCKET_IN
+		};
+
+	/**
+	 * cadena exacta de cada orden
+	 */
+	private static final String[] _valid_user_commands_str = {
+			"quit",
+			"myfiles",
+			"ping",
+			"dirfiles",
+			"peerfiles",
+			"serve",
+			"peers",
+			"dirdl",
+			"peerdl",
+			"nick",
+			"help"
+		};
+
+	/**
+	 * Mensaje de ayuda para cada orden
+	 */
+	private static final String[] _valid_user_commands_help = {
+			"quit the application",
+			"show contents of local folder (files that may be served)",
+			"ping directory to check protocol compatibility",
+			"show list of files served by the directory",
+			"show list of files served by a peer (by nickname)",
+			"run file server and register it with directory",
+			"show list of peers registered in the directory",
+			"download file from directory by hash substring (keeps remote name)",
+			"download file from a specific peer by hash substring (keeps remote name)",
+			"change local nickname before serving files",
+			"shows this information"
+			};
+
+	/**
+	 * Transforma una cadena introducida en el código de comando correspondiente
+	 */
+	public static byte stringToCommand(String comStr) {
+		//Busca entre los comandos si es válido y devuelve su código
+		for (int i = 0;
+		i < _valid_user_commands_str.length; i++) {
+			if (_valid_user_commands_str[i].equalsIgnoreCase(comStr)) {
+				return _valid_user_commands[i];
+			}
+		}
+		//Si no se corresponde con ninguna cadena entonces devuelve el código de comando no válido
+		return COM_INVALID;
+	}
+
+	public static String commandToString(byte command) {
+		for (int i = 0;
+		i < _valid_user_commands.length; i++) {
+			if (_valid_user_commands[i] == command) {
+				return _valid_user_commands_str[i];
+			}
+		}
+		return null;
+	}
+
+	/**
+	 * Imprime la lista de comandos y la ayuda de cada uno
+	 */
+	public static void printCommandsHelp() {
+		System.out.println("List of commands:");
+		for (int i = 0; i < _valid_user_commands_str.length; i++) {
+			System.out.println(String.format("%1$15s", _valid_user_commands_str[i]) + " -- "
+					+ _valid_user_commands_help[i]);
+		}		
+	}
+}