initial commit

README.md

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+Sleuth.js
+========

sleuth.js

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+(function(window, document){
+  if(window.Sleuth !== undefined){
+    return;
+  }
+
+  if(!window.btoa){
+    var base64chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.split('');
+    window.btoa = function(data){
+      var result = '';
+      var padding = '';
+      var padCount = data.length % 3;
+
+      if(padCount > 0){
+        for(; padCount < 3; ++padCount){
+          padding += '=';
+          data += '\0';
+        }
+      }
+
+      for(var i = 0; i < data.length; i += 3){
+        var next = (data.charCodeAt(i) << 16) + (data.charCodeAt(i + 1) << 8) + data.charCodeAt(i + 2);
+        next = [(next >>> 18) & 63, (next >>> 12) & 63, (next >>> 6) & 63, next & 63];
+        result += base64chars[next[0]] + base64chars[next[1]] + base64chars[next[2]] + base64chars[next[3]];
+      }
+
+      return result.substring(0, result.length - padding.length) + padding;
+    };
+  }
+
+  var encodeObject = function(data){
+    var query = [];
+    for(var key in data){
+      query.push(encodeURIComponent(key) + '=' + encodeURIComponent(data[key]));
+    };
+
+    return query.join('&');
+  };
+
+  var post = function(url, data, tags){
+    var req = new XMLHttpRequest();
+    url += '?' + encodeObject(tags);
+    req.open('POST', url, true);
+    req.send(JSON.stringify(data));
+  };
+
+  var drop = function(url, data, tags){
+    tags.d = window.btoa(JSON.stringify(data));
+    tags.n = new Date().getTime();
+    tags.r = Math.random() * 99999999;
+    url += '?' + encodeObject(tags);
+    document.write('<sc' + 'ript type="text/javascript" src="' + url + '"></scri' + 'pt>');
+  };
+
+  var Sleuth = function(){
+    this.config = {
+      url: '/track',
+      unload: true,
+      ajax: true,
+      performance: true,
+      useLocalStorage: true,
+    };
+
+    this.tags = {};
+    this.data = {};
+  };
+
+  Sleuth.prototype.init = function(options){
+    for(var key in options){
+      this.config[key] = options[key];
+    }
+  };
+
+  Sleuth.prototype.onunload = function(){
+    if(this.config.performance && window.performance !== undefined){
+      if(window.performance.timing !== undefined){
+        this.data.timing = window.performance.timing;
+      }
+      if(window.performance.navigation !== undefined){
+        this.data.navigation = {
+          redirectCount: window.performance.navigation.redirectCount,
+          type: window.performance.navigation.type,
+        };
+      }
+    }
+    this.sendAllData();
+  };
+
+  Sleuth.prototype.sendData = function(data){
+    if(this.config.ajax){
+      post(this.config.url, data, this.tags);
+    } else {
+      drop(this.config.url, data, this.tags);
+    }
+  };
+
+  Sleuth.prototype.sendAllData = function(){
+    var toSend = this.data;
+    this.data = {};
+    if(this.config.useLocalStorage){
+      for(var key in window.localStorage){
+        if(key.indexOf('Sleuth:') === 0){
+          var value = window.localStorage.getItem(key);
+          window.localStorage.removeItem(key);
+          key = key.substring(6);
+          toSend[key] = value;
+        }
+      }
+    }
+    this.sendData(this.config.url, toSend, this.tags);
+  };
+
+  Sleuth.prototype.track = function(key, value){
+    if(this.config.useLocalStorage && window.localStorage !== undefined){
+      window.localStorage.setItem('Sleuth:' + key, value);
+    } else {
+      this.data[key] = value;
+    }
+  };
+
+  Sleuth.prototype.tag = function(key, value){
+    this.tags[key] = value;
+  };
+
+  window.Sleuth = new Sleuth();
+  window.onbeforeunload = window.Sleuth.onunload.bind(window.Sleuth);
+})(window, document);

sleuth.min.js

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+(function(window,document){if(window.Sleuth!==undefined){return}if(!window.btoa){var base64chars="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".split("");window.btoa=function(data){var result="";var padding="";var padCount=data.length%3;if(padCount>0){for(;padCount<3;++padCount){padding+="=";data+="\x00"}}for(var i=0;i<data.length;i+=3){var next=(data.charCodeAt(i)<<16)+(data.charCodeAt(i+1)<<8)+data.charCodeAt(i+2);next=[next>>>18&63,next>>>12&63,next>>>6&63,next&63];result+=base64chars[next[0]]+base64chars[next[1]]+base64chars[next[2]]+base64chars[next[3]]}return result.substring(0,result.length-padding.length)+padding}}var encodeObject=function(data){var query=[];for(var key in data){query.push(encodeURIComponent(key)+"="+encodeURIComponent(data[key]))}return query.join("&")};var post=function(url,data,tags){var req=new XMLHttpRequest;url+="?"+encodeObject(tags);req.open("POST",url,true);req.send(JSON.stringify(data))};var drop=function(url,data,tags){tags.d=window.btoa(JSON.stringify(data));tags.n=(new Date).getTime();tags.r=Math.random()*99999999;url+="?"+encodeObject(tags);document.write("<sc"+'ript type="text/javascript" src="'+url+'"></scri'+"pt>")};var Sleuth=function(){this.config={url:"/track",unload:true,ajax:true,performance:true,useLocalStorage:true};this.tags={};this.data={}};Sleuth.prototype.init=function(options){for(var key in options){this.config[key]=options[key]}};Sleuth.prototype.onunload=function(){if(this.config.performance&&window.performance!==undefined){if(window.performance.timing!==undefined){this.data.timing=window.performance.timing}if(window.performance.navigation!==undefined){this.data.navigation={redirectCount:window.performance.navigation.redirectCount,type:window.performance.navigation.type}}}this.sendAllData()};Sleuth.prototype.sendData=function(data){if(this.config.ajax){post(this.config.url,data,this.tags)}else{drop(this.config.url,data,this.tags)}};Sleuth.prototype.sendAllData=function(){var toSend=this.data;this.data={};if(this.config.useLocalStorage){for(var key in window.localStorage){if(key.indexOf("Sleuth:")===0){var value=window.localStorage.getItem(key);window.localStorage.removeItem(key);key=key.substring(6);toSend[key]=value}}}this.sendData(this.config.url,toSend,this.tags)};Sleuth.prototype.track=function(key,value){if(this.config.useLocalStorage&&window.localStorage!==undefined){window.localStorage.setItem("Sleuth:"+key,value)}else{this.data[key]=value}};Sleuth.prototype.tag=function(key,value){this.tags[key]=value};window.Sleuth=new Sleuth;window.onbeforeunload=window.Sleuth.onunload.bind(window.Sleuth)})(window,document);