utils.js

module.exports.shorten = function(str,len) {

  if (typeof str===null){
    return;
  }
  
  if (str.length>len) {
      return str.substring(0,len)+"…";
  }
  else {
      return str;
  }
  
};

module.exports.capitalize = function(s)
{
    return s[0].toUpperCase() + s.slice(1);
};

module.exports.timeAgo = function(date_str){
    date_str = date_str.replace('+0000','Z');
    var time_formats = [
        [60, 'just now', 1],
        [120, '1 minute ago', '1 minute from now'],
        [3600, 'minutes ago', 60], 
        [7200, '1 hour ago', '1 hour from now'],
        [86400, 'hours ago', 3600], 
        [172800, 'yesterday', 'tomorrow'], 
        [604800, 'days ago', 86400], 
        [1209600, 'last week', 'next week'], 
        [2419200, 'weeks ago', 604800], 
        [4838400, 'last month', 'next month'], 
        [29030400, 'months ago', 2419200], 
        [58060800, 'last year', 'next year'], 
        [2903040000, 'years ago', 29030400], 
        [5806080000, 'last century', 'next century'], 
        [58060800000, 'centuries ago', 2903040000] 
    ];
    var time = ('' + date_str).replace(/-/g,"/").replace(/[TZ]/g," ").replace(/^\s\s*/, '').replace(/\s\s*$/, '');
    if(time.substr(time.length-4,1)==".") time =time.substr(0,time.length-4);
    var seconds = (new Date - new Date(time)) / 1000;
    var token = '', list_choice = 1;
    if (seconds < 0) {
    seconds = Math.abs(seconds);
    token = 'ago';
    list_choice = 2;
    }
    var i = 0, format;
    while (format = time_formats[i++])
    if (seconds < format[0]) {
      if (typeof format[2] == 'string')
        return format[list_choice];
      else
        return Math.floor(seconds / format[2]) + ' ' + format[1] + ' ' + token;
    }
    return time;
}

module.exports.capitalize = function(string){
    return string.charAt(0).toUpperCase() + string.slice(1);
}

module.exports.permalink = function(string){
    
    if (typeof string == "undefined") {
        return;
    }
    
    return encodeURIComponent(string.replace(/-/g,"_").replace(/\s/g,"-"));
}

module.exports.unPermalink = function(string){
    
    if (typeof string == "undefined") {
        return;
    }
    
    return decodeURIComponent(string.replace(/-/g," ").replace(/_/g,"-"));
}