IRCConnector.scala

/*
Copyright (c) 2008 ymnk, JCraft,Inc. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

   1. Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.

   2. Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in
      the documentation and/or other materials provided with the distribution.

   3. The names of the authors may not be used to endorse or promote products
      derived from this software without specific prior written permission.

 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
 INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
import java.net.Socket
import java.io._
import scala.concurrent.ops.spawn

class IRCConnector(host:String, port:Int,
                   username:String, passwd:String,
                   channel:String) extends Connector{

  val sock=new Socket(host, port)
  val (in, out) =
    (new BufferedReader(new InputStreamReader(sock.getInputStream, "UTF-8")),
     sock.getOutputStream)
  val crlf=Array(0x0d, 0x0a).map(_.asInstanceOf[Byte])

  def write(text:String){
    writeRaw("PRIVMSG "+channel+" :"+text)
  }

  private def writeRaw(msg:String){
    val b=try{ msg.getBytes("UTF-8") }
    catch{ case e:UnsupportedEncodingException => msg.getBytes }
    out.write(b)
    out.write(crlf)
    out.flush
  }

  spawn{
    def parse(msg:String)={
      msg.split(" ", 0) match {
        case Array(pr, c, p@_*) if pr.startsWith(":") =>
          (Some(pr.substring(1)), c.toUpperCase, p.mkString(" "))
        case Array(c, p@_*)  => (None, c.toUpperCase, p.mkString(" "))
      }
    }
    def loop{
      if(in.ready){
        val msg=in.readLine
        parse(msg) match {
          case (pr, "PRIVMSG", params) => {
            val who = pr match{
              case Some(pr) => pr.split("!")(0)
              case _ => "unknown"
            }
            val(nick, msg) = params.split(" ", 0) match {
              case Array(n) => (n, "")
              case Array(n, m@_*) if m(0).startsWith(":") =>
                (n, m.mkString(" ").substring(1))
              case Array(n, m@_*) => (n, m.mkString(" "))
            }
            if(nick==channel && msg!=""){
              writeToOthers(who+": "+msg)
            }
          }
          case (pr, "PING", params) => {
            writeRaw("PONG "+params)
          }
          case m => println(m)
        }
      }
      else{
        try{ Thread.sleep(100)}catch{case e=> }
      }
      loop
    }
    loop
  }

  writeRaw("PASS "+passwd)
  writeRaw("NICK "+username)
  writeRaw("USER "+username+" 127.0.0.1 * :"+username)
  writeRaw("JOIN "+channel)
}

MessengerHub.scala

/*
Copyright (c) 2008 ymnk, JCraft,Inc. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

   1. Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.

   2. Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in
      the documentation and/or other materials provided with the distribution.

   3. The names of the authors may not be used to endorse or promote products
      derived from this software without specific prior written permission.

 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
 INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

import scala.collection.mutable.{Set, Map}

abstract class Connector{
  def write(text:String)
  def writeToOthers(message:String)=MessengerHub.write(this, message)
}

object MessengerHub{
  private val lastMessage=Map.empty[Connector, String]
  private val connectors=Set.empty[Connector]
  def += (c:Connector) { connectors += c; lastMessage += (c -> "") }
  def write(ignore:Connector, message:String){
    lastMessage.get(ignore) match{
      case Some(`message`) =>
      case _ => {
        lastMessage += (ignore -> message)
        connectors.foreach{ c => if(c!=ignore) c.write(message) }
      }
    }
  }
}

SkypeChatConnector.scala

/*
Copyright (c) 2008 ymnk, JCraft,Inc. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

   1. Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.

   2. Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in
      the documentation and/or other materials provided with the distribution.

   3. The names of the authors may not be used to endorse or promote products
      derived from this software without specific prior written permission.

 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
 INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/**
 * Skype4Java[1] is required to be compiled.
 * [1] https://developer.skype.com/wiki/Java_API
 */

import com.skype.{Skype, Chat, ChatMessage, ChatMessageAdapter}
class SkypeChatConnector(chatId:String) extends Connector{

  Skype.setDeamon(false)

  val Array(chat) = Skype.getAllChats.filter(_.getId.toString==chatId)

  var lastSkypeWriteTime:Long = -1
  def write(message:String){
    lastSkypeWriteTime=System.currentTimeMillis
    chat.send(message)
  }

  val interval:Long = 3*1000

  Skype.addChatMessageListener(
    new ChatMessageAdapter{
      override def chatMessageReceived(m:ChatMessage)=chatMessage(m)
      override def chatMessageSent(m:ChatMessage)={
        if(System.currentTimeMillis - lastSkypeWriteTime > interval){
          chatMessage(m)
        }
      }
      private def chatMessage(m:ChatMessage){
        val c=m.getChat
        if(chat==c){
          val sender = m.getSender
          val senderId = m.getSenderId
          val senderDisplayName = m.getSenderDisplayName
          m.getType.toString match {
            case "SAID" => {
              val content = m.getContent
              writeToOthers(senderDisplayName+": "+content)
            }
            case "ADDEDMEMBERS" => {
              writeToOthers(senderDisplayName+" joined this chat.")
            }
            case "LEFT" => {
              writeToOthers(senderDisplayName+" left this chat.")
            }
            case _ =>
          }
        }
      }
    }
  )
}

object ListChats {
  def main(arg:Array[String]){
    Skype.getAllChats.foreach { c =>
      import c._
      println(getId+" | "+getWindowTitle)
    }
  }
}

SkypeChatTwitter.scala

/*
Copyright (c) 2008 ymnk, JCraft,Inc. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

   1. Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.

   2. Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in
      the documentation and/or other materials provided with the distribution.

   3. The names of the authors may not be used to endorse or promote products
      derived from this software without specific prior written permission.

 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
 INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

object SkypeChatTwitter {
  def main(arg:Array[String]){
    val chatId = arg(0)                        // chatid
    val (username, passwd) = (arg(1), arg(2))  // Twitter id and password.

    MessengerHub += new SkypeChatConnector(chatId)
    MessengerHub += new TwitterConnector(username, passwd)
  }
}

SkypeChatTwitterIRC.scala

/*
Copyright (c) 2008 ymnk, JCraft,Inc. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

   1. Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.

   2. Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in
      the documentation and/or other materials provided with the distribution.

   3. The names of the authors may not be used to endorse or promote products
      derived from this software without specific prior written permission.

 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
 INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

object SkypeChatTwitterIRC {
  def main(arg:Array[String]){
    val chatId = arg(0)                      // chatid
    val (tuser, tpasswd) = (arg(1), arg(2))  // Twitter id and password.
    val (host, port,
         ircuser, ircpasswd,
         channel) = (arg(3), arg(4).toInt, arg(5), arg(6), arg(7))

    MessengerHub += new SkypeChatConnector(chatId)
    MessengerHub += new TwitterConnector(tuser, tpasswd)
    MessengerHub += new IRCConnector(host, port, ircuser, ircpasswd, channel)
  }
}

TwitterConnector.scala

/*
Copyright (c) 2008 ymnk, JCraft,Inc. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

   1. Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.

   2. Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in
      the documentation and/or other materials provided with the distribution.

   3. The names of the authors may not be used to endorse or promote products
      derived from this software without specific prior written permission.

 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
 INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

import java.net.{Authenticator, PasswordAuthentication}
import java.net.{URL, URLEncoder, HttpURLConnection}
import scala.xml.XML
import java.text.SimpleDateFormat
import java.util.Locale
import scala.actors.Actor
import scala.actors.Actor.loop
import scala.concurrent.ops.spawn

class TwitterConnector(username:String, passwd:String) extends Connector{

  def write(text:String){
    def chop(text:String):String={
      text match {
        case e if e.length>140 => chop(text.substring(0, text.length-1))
        case e => URLEncoder.encode(e, "UTF-8")
      }
    }

    val pattern = "(http://[a-zA-Z0-9%+\\-&=?#./$()!\"$'^~@]+)".r

    def tinyURL(s:String) = if(s.startsWith("http://tinyurl")) s else
      io.Source.fromURL("http://tinyurl.com/api-create.php?url="+s).mkString("")

    def replace(s:String, o:String, n:String) =
      s.substring(0, s.indexOf(o))+n+s.substring(s.indexOf(o)+o.length)

    def short(s:String)={
      var source = s
      try{
        for(http <- pattern findAllIn source){
          source = replace(source, http, tinyURL(http))
        }
      }
      catch{ case e => println(e) }
      source
    }

    val url = "http://twitter.com/statuses/update.xml?status="+chop(short(text))
    val urlConn = new URL(url).openConnection.asInstanceOf[HttpURLConnection]
    urlConn.setRequestMethod("POST")
    urlConn.connect()
    urlConn.getResponseCode
  }

  class FriendsTimeline(username:String) extends Actor{
    sealed abstract class MESSAGE
    case object GETTIMELINE extends MESSAGE

    val url = "http://twitter.com/statuses/replies.xml"

    val df = new SimpleDateFormat("EEE MMM dd HH:mm:ss +0000 yyyy", Locale.US)

    var lastTime:Long = -1
    val interval = 90 * 1000

    def act {
      this ! GETTIMELINE
      loop {
        react {
          case GETTIMELINE => {
            try{ lastTime = timeline(lastTime) }
            catch{case e:java.io.IOException => }
            ping(interval, GETTIMELINE)
          }
        }
      }
    }

    private def timeline(_lastTime:Long)={
      var lastTime=_lastTime
      val urlConn = new URL(url).openConnection.asInstanceOf[HttpURLConnection]
      urlConn.connect();
      urlConn.getResponseCode
      for (s <- XML.load(urlConn.getInputStream) \ "status" reverse ;
           created_at = s \ "created_at" text ;
           time = df.parse(created_at).getTime if(time>lastTime)) {
           lastTime=time
           var (text, user_name, screen_name) =
              (s \ "text" text,
               s \ "user" \ "name" text,
               s \ "user" \ "screen_name" text)
           if(username!=screen_name &&
             text.startsWith("@"+username)){
             if(_lastTime != -1){  // At first time, we will skip it.
               println(created_at+" ["+user_name+"] "+
                       text.substring(("@"+username).length).trim)
               writeToOthers(user_name+": "+
                             text.substring(("@"+username).length).trim)
             }
           }
      }
      lastTime
    }

    private def ping(sleep:Long, m:MESSAGE) {
      spawn { Thread.sleep(sleep); this ! m }
    }
  }

  private def setAutenticator(u:String, p:String){
    Authenticator.setDefault(
      new Authenticator {
        override def getPasswordAuthentication = {
          new PasswordAuthentication(u, p.toCharArray);
        }
      }
    )
  }

  setAutenticator(username, passwd)

  new FriendsTimeline(username).start
}

TwitterIRC.scala

/*
Copyright (c) 2008 ymnk, JCraft,Inc. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

   1. Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.

   2. Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in
      the documentation and/or other materials provided with the distribution.

   3. The names of the authors may not be used to endorse or promote products
      derived from this software without specific prior written permission.

 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
 INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

object TwitterIRC {
  def main(arg:Array[String]){
    val (tuser, tpasswd) = (arg(0), arg(1))  // Twitter id and password.
    val (host, port,
         ircuser, ircpasswd,
         channel) = (arg(2), arg(3).toInt, arg(4), arg(5), arg(6))

    MessengerHub += new TwitterConnector(tuser, tpasswd)
    MessengerHub += new IRCConnector(host, port, ircuser, ircpasswd, channel)
  }
}