utils.js

define(function() {

	var clone = function clone(src) {
		  function mixin(dest, source, copyFunc) {
			var name, s, i, empty = {};
			for(name in source){
			  // the (!(name in empty) || empty[name] !== s) condition avoids copying properties in "source"
			  // inherited from Object.prototype.   For example, if dest has a custom toString() method,
			  // don't overwrite it with the toString() method that source inherited from Object.prototype
			  s = source[name];
			  if(!(name in dest) || (dest[name] !== s && (!(name in empty) || empty[name] !== s))){
				dest[name] = copyFunc ? copyFunc(s) : s;
			  }
			}
			return dest;
		  }
		
		  if(!src || typeof src != "object" || Object.prototype.toString.call(src) === "[object Function]"){
			// null, undefined, any non-object, or function
			return src;  // anything
		  }
		  if(src.nodeType && "cloneNode" in src){
			// DOM Node
			return src.cloneNode(true); // Node
		  }
		  if(src instanceof Date){
			// Date
			return new Date(src.getTime());  // Date
		  }
		  if(src instanceof RegExp){
			// RegExp
			return new RegExp(src);   // RegExp
		  }
		  var r, i, l;
		  if(src instanceof Array){
			// array
			r = [];
			for(i = 0, l = src.length; i < l; ++i){
			  if(i in src){
				r.push(clone(src[i]));
			  }
			}
			// we don't clone functions for performance reasons
			//    }else if(d.isFunction(src)){
			//      // function
			//      r = function(){ return src.apply(this, arguments); };
		  }else{
			// generic objects
			r = src.constructor ? new src.constructor() : {};
		  }
		  return mixin(r, src, clone);

	};


	var mr = function(start,end)
	{
	 	return 'bytes='+start+'-'+end;
	};
	
	var absolutizeURL = function(base, target) 
	{
	  if (target.match(/^[a-z]*:\/\//)) return target;
	  var rel_url;
	  if (target[0] == '/') {
		target = target.slice(1, target.length);
	  } 
	  i = base.lastIndexOf('/');
	  if(i+1<= base.length)
	  {
	  	rel_url = base.slice(0,i+1);
	  }
	  
	  console.log(rel_url + target);
	  return rel_url + target;
	}
	
	return { make_range : mr, absURL : absolutizeURL, clone : clone };

} );