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