A small IRC bot which has a weird command syntax, no helps or command names, and it's quick. :D

boxmini.js

/*jslint node: true */
/*
  A really small and lightweight IRC bot 
  Made from pieces of NodeIRCBot (http://github.com/boxmein/NodeIRCBot/)
  Features:
  1. Commands are numbered, but have a prefix character
  2. Output logging levels
  3. Sandboxed Javascript handling (1)
*/ 

// A startup message with the current working directory for require() reference
console.log("-- working directory: " + process.cwd());
// Libraries required: 
//  net - Networking, the connection to the IRC serer
//  sandbox - Sandboxed Javascript interpreting
//  http - HTTP requests
var net = require("net"), http = require('http'), Sandbox = require("sandbox"), sand = new Sandbox();
var relays = [], relaycount = 0;


/*
  Configuration variables
  rawlogging (false): will also display every raw IRC command sent to it
  sendlogging (true): will display every raw IRC command it sends
  realname   (magic): this name is sent as the IRC Real Name
  nickname (boxmini): this is the bot's nickname
  channels          : the channels the bot joins. Separated by commas and no spaces!
*/
var config = {
  rawlogging: false,
  sendlogging: true,
  nickname: "boxmini",
  realname: "magikku",
  channels: "##boxmein,##powder-bots,##jacob1"
};


/*
  Commands array
  Contains the commands addressed by index
  input: ircdata (object) - contains lots of useful data, is created in connection.onData
  return: the string to respond with, if any. Return false if nothing is to be told.
*/  
var commands = [
  // Pig latin [0]
  function (ircdata) {
    var endstring = ircdata.args.map(function (each) { 
      // Move the first character to the end
      var chars = each.split(''); 
      // - => spaces!
      chars.map(function(i) {if (i === '-') return ' '; });
      chars.push(chars.shift()); 
      // Append "ay" 
      chars = chars.join(''); 
      chars += "ay";

      // Return value
      return chars;
    }).join(" ");
    return endstring;
  },

  
  // Sandboxed Javascript [1]
  function (ircdata) { 
    console.log("~~ doing Javascript: " + ircdata.saymsg);
    sand.run("(function() {" + ircdata.saymsg + "})();", function (out) {
      // Output longer than 200 chars will be truncated
      if (out.result.length < 200) {
        console.log(out.result);
        respond(ircdata, out.result);
      }
      else { 
        console.log(out.result.slice(0,200)+"...");
        respond(ircdata, out.result.slice(0, 200) + "...");
      }
    }); 
 },


  // It'll come in handy. [2]
  function (ircdata) { 
    irc.action(ircdata.channel, "slaps Ristovski"); 
    return false;
  },


  // Relaying (add) [3]
  function (ircdata) {
    // relaydir should look something like
    // #channel1->#channel2
    var relaydir = ircdata.args[0] || false;
    if (!relaydir) 
      return false;
    else {
      var channels = relaydir.split("->");
      channels.map(function(e) { return sanitizeChannel(e); });
      relays[relaycount++] = {
        from: channels[0],
        to:   channels[1]
      };
      return ''+relaycount-1;
    }
  },


  // Relaying (remove) [4]
  function (ircdata) {
    var index;
    try {
      index = parseInt(ircdata.args[0], 10);
    }
    catch (err) {return err;}
    if (relays[index])
      delete relays[index];
    return false;
  },


  // Reverse filter [5]
  function (ircdata) {
    var endstr = [];
    ircdata.saymsg
    .split('')
    .map(function(e) {
      endstr.unshift(e); 
      return e; 
    });
    return endstr.join('');
  },


  // Echo command [6]
  function (ircdata) {
    respond(ircdata, ircdata.saymsg, true);
  },


  // Slap someone else [7]
  function (ircdata) {
    var slappee = ircdata.saymsg || false;
    if (slappee) 
      irc.action(ircdata.channel, "slaps " + slappee);
  }


  // Increment every character by one [8] UNSAFE 
  /* function (ircdata) {
    return ircdata.saymsg.split('').map(function (each) {
      return String.fromCharCode(each.charCodeAt() + 1);
    }).join('');
  }*/ 


  // Test the down status of a site [8] UNSAFE  
  /*function (ircdata) {
    if (!ircdata.args[0]) return 0; 
    // Get the domain
    var domain = ircdata.args.shift()
      .replace(/^http:\/\//i,"")
      .split("/") || false;
    console.log("received domain: " + domain.join('/'));
    if (!domain[0]) 
      return "No domain specified ;_;";
    return http.request({
      host: domain[0], 
      path: (domain[1] || "/") 
    }, 
    function(response) {
      console.log("request fulfilled: status=" + response.statusCode);
      if (response.statusCode == 200)
        respond(ircdata,"Seems up (200)");
      else
        respond(ircdata, "{0}: something happened ):)".format(response.statusCode));
    }).end();
  }*/


];




/*
  Connection object
  Contains everything one needs to get connected, including handleCommands to do initial command 
  parsing and ircdata generation
*/

var connection = {
  client: new net.Socket(),
  PORT: 6667,
  HOST: "irc.freenode.net",

  onConnected: function() {
    console.log("** Connection successful");
    setTimeout(function() {
      irc.raw("NICK " + config.nickname);
      irc.raw("USER " + config.nickname + " 8 * :" + config.realname);
      irc.raw("JOIN " + config.channels);
      console.log("--- --- Finished startup --- ---");
    }, 7000);
  },

  // Main command handler
  // Input: object
  /* {
      hostmask: "[email protected]",
      channel: "#powder-bots",
      sender: "sendernick",
      message: "\<id> derp merp herp",
      args: ["\<id>", "derp", "merp", "herp"],
      // Added in this function
      command: 5, 
      saymsg: "derp merp herp"
     } 
  */
  handleCommands: function(ircdata) {
    ircdata.command = ircdata.args.shift().substring(1).trim().replace(/[^0-9]+?/gi, ""); 
    ircdata.saymsg = ircdata.args.join(" ");
    try { 
      ircdata.command = parseInt(ircdata.command, 10); // parseInt implies integers
      if (ircdata.command < commands.length && ircdata.command >= 0) {
        var response = commands[ircdata.command](ircdata) || false;
        if (response)
          respond(ircdata, response);
      }
    } 
    catch (err) {
      respond(ircdata, err);
    }
  },


  onData: function(data) {
    // :boxmein!boxmein@unaffiliated/boxmein PRIVMSG ##powder-bots :this is a test message
    if(config.rawlogging)
      console.log("<< "+data);


    if (data.indexOf("PRIVMSG ") != -1) { 
      var arr = data.split(' ');   
      var result = arr.splice(0,3);
      result.push(arr.join(' '));
      // result = [":hostmask", "command", "channel", ":mess age"]
      var ircdata = {
        hostmask : result[0].substring(1),
        channel  : result[2],
        sender   : result[0].substring(1, result[0].indexOf("!")),
        message  : result[3].substring(1).trim()
      // command: ['0']
      // args: ['arg1', 'arg2', 'arg3']
      // saymsg: "arg1 arg2 arg3"
      // message: "\0 arg1 arg2 arg3"
      // sender: "boxmein"
      // hostmask: "boxmein!boxmein@unaffiliated/boxmein"
      // channel: "##powder-bots"
      };
      var cmd;
      // 3. Command handling
      ircdata.args = ircdata.message.split(" ");
      if (ircdata.message.indexOf("\\") === 0) { // Ristovski wanted to be ignored :(
    //if (ircdata.message.indexOf("\\") == 0 && ircdata.hostmask.indexOf("Ristovski") === -1) {
        console.log("~~ command get: " + ircdata.message);
        connection.handleCommands(ircdata);
      }

      // 4. Command handling II: Durararararararara
      else if (ircdata.message.indexOf("dura") === 0) {
        cmd = ircdata.args.shift();
        // args = ["argument1", "argument2"]
        // cmd  = "durararara" (dura + ra + ra + ra)
        cmd = cmd.replace(/^dura/i, "\\");
        // cmd = "\rarararara"
        var duracount = 0;
        try {
          // Count the rest of the ra's
          duracount = cmd.match(/ra/gi).length;
        } catch(err) {}
        cmd = cmd.replace(/ra/i, "");
        // cmd = "\"; duracount = X;
        console.log("cmd ended up: " + cmd); 
        cmd += duracount;
        // cmd = "\X";
        ircdata.args.unshift(cmd);
        // args = ["\X", "argument1", "argument2", ...]
        connection.handleCommands(ircdata);
      }

      // 4.1. Command handling III: ?!????!?!?!
      else if (ircdata.message.indexOf("?") === 0) {
        cmd = ircdata.args.shift().substring(1);
        cmd = cmd.replace(/\?/g, "0");
        cmd = cmd.replace(/!/g, "1");
        var cmdcount;
        try { 
          if (cmd === "") 
            cmd = "0";
          cmdcount = parseInt(cmd, 2);
        }
        catch (err) { return; }
        console.log("(?!): cmdcount ended up: " + cmdcount + "; cmd = " + cmd); 
        ircdata.args.unshift('\\'+cmdcount);
        connection.handleCommands(ircdata);
      }


      /* // 4.2. Command handling IV: Mooooo
      else if (ircdata.message.indexOf("?") === 0) {
        cmd = ircdata.args.shift().substring(1);
        cmd = cmd.replace(/\.\.\./g, "0");
        cmd = cmd.replace(/moo/g, "1");
        var cmdcount;
        try { 
          cmdcount = parseInt(cmd, 2);
        }
        catch (err) { return; }
        console.log("(moo:) cmdcount ended up: " + cmdcount + "; cmd = " + cmd); 
        ircdata.args.unshift('\\'+cmdcount);
        connection.handleCommands(ircdata);
      } // */

      // 5. Relaying (channel bridging really) 
      for (var i in relays) {
        if (!(relays[i].hasOwnProperty("from") && relays[i].hasOwnProperty("to")))
          continue;
        if (relays[i].from == ircdata.channel) {
          irc.privmsg(relays[i].to, "<{0}/{1}> {2}".format(ircdata.channel, ircdata.sender, ircdata.message));
        }
      }
      // 6. Special words
      var responded = false;
      ircdata.args.map(function(word) {
        if (!responded) {
          switch (word) {
            case 'implement': 
              responded = true;
              respond(ircdata, "You keep using that word. I do not think it means what you think it means.");
              break;
            case 'boxmini':
              responded = true;
              respond(ircdata, "Huh?");
              break;
            default: break;
          }
        }
      });

    }
    else if(data.indexOf("PING") != -1) {
      irc.raw("PONG " + (data.split(" ")[1] || ":00000000"), true);
    }
  },

  onConnectionClose: function() {
    console.log("** Disconnected. ");
    process.exit(0);
  },

  onErr: function(evt) {
    console.log(":( Error connecting: " + evt);
  }
};


// A simple yet safe respond function
var respond = function(ircdata, message, nonick) {
  console.log("-> {0}{1}: {2}{3}".format(irc.col.c(irc.col.navy), ircdata.sender, irc.col.c(irc.col.black, irc.col.black), message));
  irc.privmsg(ircdata.channel, (nonick ? "" : ircdata.sender + ": ")  + message);
};
// Overly attached sanitization. 
var sanitizeChannel = function(query) {
  return (''+query).trim().replace(/[^\w#-_]+?/gi, "");
};
// A bit better sanitization
var sanitize = function(query) {
  return (''+query).trim().replace(/[^\w-_ !"#¤%&\/()]/gi, "");
}
// Here's the entry point for the bot. Out of all places, I know.
connection.client.setEncoding("ascii");
connection.client.setNoDelay();
connection.client.connect(connection.PORT, connection.HOST, connection.onConnected);
connection.client.on("data", connection.onData);
connection.client.on("close", connection.onConnectionClose);
connection.client.on("error", connection.onErr);
/*
  Free to use IRC protocol wrapper functions
  Feel free to contract that entire var since it contains nothing super interesting.
*/

var irc = {

  // Sends a CTCP request to the channel or user. Used for ACTION and various CTCP requests.
  // @param channel The user or channel to send a request to
  // @param data The CTCP data to send. Includes the sub-command.
  //             Looks like "VERSION" or like "ACTION eats a vegetable"
  ctcp: function(channel, data) {
    irc.raw("PRIVMSG {0} :\x01{1}\x01".format(channel, data));
  },
  // Sets a channel mode. Will also work with bans/stuff since mode can contain a name. 
  // @param channel The channel that will receive the given mode.
  // @param mode    The mode being set. May either be "+o" or even "+b boxmein!*@*"
  mode: function (channel, mode) {
    irc.raw("MODE {0} {1}".format(channel, mode));
  },
  // Sends a NAMES request to the given channel to find out all about the users joined there.
  // @param channel The channel to send NAMES to.
  names: function (channel) {
    irc.raw("NAMES " + channel);
  },
  // Sends a CTCP ACTION, the equivalent of /me in IRC clients.
  // @param channel The channel to send the ACTION to. May also be an username.
  // @param action  The action to send.
  action: function(channel, action) {
    irc.ctcp(channel, "ACTION {0}".format(action));
  },
  // Sends a private message (also a channel message!)
  // @param channel The given channel to send to. May also be an username.
  // @param message The message that will be sent. 
  // @param hide    Whether or not to hide the sent message. Gets passed on to irc.raw. May be left 
  //                undefined.
  privmsg: function(channel, message, hide) { 
    irc.raw("PRIVMSG {0} :{1}".format(channel, message), hide);
  },
  // Sends a NOTICE to the channel or user
  // @param channel The channel or user to send the given message to.
  // @param message The message being sent. 
  notice: function(channel, message) {
    irc.raw("NOTICE {0} :{1}".format(channel, message));
  },
  // Joins a channel. 
  // @param channel The channel to join to
  join: function(channel) { 
    irc.raw("JOIN {0}".format(channel));
  },
  // Removes self from the given channel. No leave messages.
  // @param channel The channel to leave from
  part: function(channel) { 
    irc.raw("PART {0}".format(channel));
  },
  // Quits the IRC. Sends a quit message and waits for the server for 5 seconds then quits
  // the program.
  quit: function() {
    irc.raw("QUIT :Sayonara");
    setTimeout(function() { 
      process.exit(0); 
    }, 5000);
  },
  // Sends raw data to the IRC server. 
  // @param data The data that is to be written, also known as raw IRC. Use wrappers instead :D
  // @param hide Whether or not to hide the sending notification into the console.
  raw: function(data, hide) { 
    connection.client.write(data + "\n", "ascii", function() {
      if(!hide && config.sendlogging)
        console.log(">> " + data);
    });
  },
  // IRC Colours. 
  col: {
    cchar: '\x03', // Control character => 0x03 or ^C. 
     beep: '\x07', // Bell character
    clear: '\x0F', // Clear Formatting
     bold: '\x02', // Bold character
   italic: '\x15', // Italic formatting
    uline: '\x1E', // Underlines
    white: 0,  // Note: may be interpreted differently
    black: 1,
     navy: 2, 
    green: 3,
      red: 4,
    brown: 5, 
   purple: 6, 
   orange: 7,
   yellow: 8, 
     lime: 9, 
    teal: 10, 
    cyan: 11,
   lblue: 12, 
    pink: 13, 
    grey: 14, 
   lgrey: 15,
    c: function(col, bgcol) {
      return this.cchar + col + (bgcol? "," + bgcol : '');
    }
  }
};
/*
  Utility functions courtesy of dearly beloved Stack Overflow
  <3
*/
// woo stackoverflow
String.prototype.trim = function() { 
  return this.replace(/^\s+|\s+$/g, "");
};
if (!String.prototype.format) {
  String.prototype.format = function() {
    var args = arguments;
    return this.replace(/{(\d+)}/g, function(match, number) { 
          return typeof args[number] != 'undefined' ? 
          args[number] : 
          match;
    });
  };
}