shared.js

WEB IM 实现 j2ee项目的IM功能 可继承到现有的系统当中

function getArgs(){
  passedArgs=new Array();
  search = self.location.href;
  search = search.split('?');
  if(search.length>1){
    argList = search[1];
    argList = argList.split('&');
    for(var i=0; i<argList.length; i++){
      newArg = argList[i];
      newArg = argList[i].split('=');
      passedArgs[unescape(newArg[0])] = unescape(newArg[1]);
    }
  }
}

function cutResource(aJID) { // removes resource from a given jid
  if (typeof(aJID) == 'undefined' || !aJID)
    return;
  var retval = aJID;
  if (retval.indexOf("/") != -1)
    retval = retval.substring(0,retval.indexOf("/"));
  return retval;
}

function msgEscape(msg) {
  if (typeof(msg) == 'undefined' || !msg || msg == '')
    return;

  msg = msg.replace(/%/g,"%25"); // must be done first

  msg = msg.replace(/\n/g,"%0A");
  msg = msg.replace(/\r/g,"%0D");
  msg = msg.replace(/ /g,"%20");
  msg = msg.replace(/\"/g,"%22");
  msg = msg.replace(/#/g,"%23");
  msg = msg.replace(/\$/g,"%24");
  msg = msg.replace(/&/g,"%26");
  msg = msg.replace(/\(/g,"%28");
  msg = msg.replace(/\)/g,"%29");
  msg = msg.replace(/\+/g,"%2B");
  msg = msg.replace(/,/g,"%2C");
  msg = msg.replace(/\//g,"%2F");
  msg = msg.replace(/\:/g,"%3A");
  msg = msg.replace(/\;/g,"%3B");
  msg = msg.replace(/</g,"%3C");
  msg = msg.replace(/=/g,"%3D");
  msg = msg.replace(/>/g,"%3E");
  msg = msg.replace(/@/g,"%40");

  return msg;
}

// fucking IE is too stupid for window names
function makeWindowName(wName) {
  wName = wName.replace(/@/,"at");
  wName = wName.replace(/\./g,"dot");
  wName = wName.replace(/\//g,"slash");
  wName = wName.replace(/&/g,"amp");
  wName = wName.replace(/\'/g,"tick");
  wName = wName.replace(/=/g,"equals");
  wName = wName.replace(/#/g,"pound");
  wName = wName.replace(/:/g,"colon");	
  wName = wName.replace(/%/g,"percent");
  wName = wName.replace(/-/g,"dash");
  wName = wName.replace(/ /g,"blank");
  wName = wName.replace(/\*/g,"asterix");
  return wName;
}

function htmlEnc(str) {
  if (!str)
    return '';

  str = str.replace(/&/g,"&amp;");
  str = str.replace(/</g,"&lt;");
  str = str.replace(/>/g,"&gt;");
  str = str.replace(/\"/g,"&quot;");
  return str;
}

function msgFormat(msg) { // replaces emoticons and urls in a message
  if (!msg)
    return null;

  msg = htmlEnc(msg);

  if (typeof(emoticons) != 'undefined') {
    for (var i in emoticons) {
      var iq = i.replace(/\\/g, '');
      var emo = new Image();
      emo.src = emoticonpath+emoticons[i];
      if (emo.width > 0 && emo.height > 0)
	msg = msg.replace(eval("/\(\\s\|\^\)"+i+"\(\\s|\$\)/g"),"$1<img src=\""+emo.src+"\" width='"+emo.width+"' height='"+emo.height+"' alt=\""+iq+"\" title=\""+iq+"\">$2");
      else
	msg = msg.replace(eval("/\(\\s\|\^\)"+i+"\(\\s|\$\)/g"),"$1<img src=\""+emo.src+"\" alt=\""+iq+"\" title=\""+iq+"\">$2");
    }
  }
	
  // replace http://<url>
  msg = msg.replace(/(\s|^)(https?:\/\/\S+)/gi,"$1<a href=\"$2\" target=\"_blank\">$2</a>");
  
  // replace ftp://<url>
  msg = msg.replace(/(\s|^)(ftp:\/\/\S+)/gi,"$1<a href=\"$2\" target=\"_blank\">$2</a>");
  
  // replace mail-links
  msg = msg.replace(/(\s|^)(\w+\@\S+\.\S+)/g,"$1<a href=\"mailto:$2\">$2</a>");
  
  // replace *<pattern>*
  msg = msg.replace(/(\s|^)\*([^\*\r\n]+)\*/g,"$1<b>\$2\</b>");
  
  // replace _bla_ 
  msg = msg.replace(/(\s|^)\_([^\*\r\n]+)\_/g,"$1<u>$2</u>");

  msg = msg.replace(/\n/g,"<br>");

  return msg;
}

/* isValidJID
 * checks whether jid is valid
 */
var prohibited = ['"',' ','&','\'','/',':','<','>','@']; // invalid chars
function isValidJID(jid) {
  var nodeprep = jid.substring(0,jid.lastIndexOf('@')); // node name (string before the @)

  for (var i=0; i<prohibited.length; i++) {
    if (nodeprep.indexOf(prohibited[i]) != -1) {
      alert("Invalid JID\n'"+prohibited[i]+"' not allowed in JID.\nChoose another one!");
      return false;
    }
  }
  return true;
}

/* jab2date
 * converts from jabber timestamps to javascript date objects
 */
function jab2date(ts) {
  var date = new Date(Date.UTC(ts.substr(0,4),ts.substr(5,2)-1,ts.substr(8,2),ts.substr(11,2),ts.substr(14,2),ts.substr(17,2)));
  if (ts.substr(ts.length-6,1) != 'Z') { // there's an offset
    var offset = new Date();
    offset.setTime(0);
    offset.setUTCHours(ts.substr(ts.length-5,2));
    offset.setUTCMinutes(ts.substr(ts.length-2,2));
    if (ts.substr(ts.length-6,1) == '+')
      date.setTime(date.getTime() - offset.getTime());
		else if (ts.substr(ts.length-6,1) == '-')
		  date.setTime(date.getTime() + offset.getTime());
  }
  return date;
}

/* hrTime - human readable Time
 * takes a timestamp in the form of 2004-08-13T12:07:04±02:00 as argument
 * and converts it to some sort of humane readable format
 */
function hrTime(ts) {
  return jab2date(ts).toLocaleString();
}

/* jabberDate
 * somewhat opposit to hrTime (see above)
 * expects a javascript Date object as parameter and returns a jabber 
 * date string conforming to JEP-0082
 */
function jabberDate(date) {
  if (!date.getUTCFullYear)
    return;
  
  var jDate = date.getUTCFullYear() + "-";
  jDate += (((date.getUTCMonth()+1) < 10)? "0" : "") + (date.getUTCMonth()+1) + "-";
  jDate += ((date.getUTCDate() < 10)? "0" : "") + date.getUTCDate() + "T";
  
  jDate += ((date.getUTCHours()<10)? "0" : "") + date.getUTCHours() + ":";
  jDate += ((date.getUTCMinutes()<10)? "0" : "") + date.getUTCMinutes() + ":";
  jDate += ((date.getUTCSeconds()<10)? "0" : "") + date.getUTCSeconds() + "Z";
  
  return jDate;
}