310
311
if (("path" in obj) && obj.path != null)
312
313
var path = urlencode_path(obj.path.toString());
313
if (url.length > 0 && path.length > 0 && path[0] != "/")
314
if (url.length > 0 && path.length > 0 && path.charAt(0) != "/")
314
315
path = "/" + path;
490
491
function pathlist_to_path(pathlist)
492
493
ret = path_join.apply(null, pathlist);
493
if (ret[ret.length-1] != '/')
494
if (ret.charAt(ret.length-1) != '/')
511
512
return make_path(path_join.apply(null, arguments));
515
/** Generates an absolute URL to a public application
517
function public_app_path(app /*,...*/)
519
return location.protocol + "//" + public_host
520
+ make_path(path_join.apply(null, arguments));
514
523
/** Given a path, gets the "basename" (the last path segment).
516
525
function path_basename(path)
529
538
return str.substr(str.length - substring.length) == substring;
532
/** Equivalent to Python's repr.
533
* Gets the JavaScript string representation.
534
* Actually just calls JSON.stringify.
538
return JSON.stringify(str);
541
541
/** Removes all occurences of a value from an array.
543
543
Array.prototype.removeall = function(val)
597
/** Makes an asynchronous XMLHttpRequest call to the server.
597
/** Creates a random string of length length,
598
* consisting of alphanumeric characters.
600
var rand_chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZ"
601
+ "abcdefghiklmnopqrstuvwxyz";
602
function random_string(length)
604
var str = Array(length);
606
for (var i=0; i<length; i++)
608
v = Math.floor(Math.random() * rand_chars.length);
609
str[i] = rand_chars.charAt(v);
614
/** Makes an XMLHttpRequest call to the server.
598
615
* Sends the XMLHttpRequest object containing the completed response to a
599
616
* specified callback function.
601
618
* \param callback A callback function. Will be called when the response is
602
619
* complete. Passed 1 parameter, an XMLHttpRequest object containing the
603
* completed response.
620
* completed response. If callback is null this is a syncronous request
621
* otherwise this is an asynchronous request.
604
622
* \param app IVLE app to call (such as "fileservice").
605
623
* \param path URL path to make the request to, within the application.
606
624
* \param args Argument object, as described in parse_url and friends.
618
636
/* A random string, for multipart/form-data
619
637
* (This is not checked against anywhere else, it is solely defined and
620
638
* used within this function) */
621
var boundary = "48234n334nu7n4n2ynonjn234t683jyh80j";
639
var boundary = random_string(20);
622
640
var xhr = new_xmlhttprequest();
623
xhr.onreadystatechange = function()
625
if (xhr.readyState == 4)
641
var asyncronous = callback != null;
644
xhr.onreadystatechange = function()
646
if (xhr.readyState == 4)
630
652
if (method == "GET")
632
654
/* GET sends the args in the URL */
633
655
url = build_url({"path": path, "args": args});
634
656
/* open's 3rd argument = true -> asynchronous */
635
xhr.open(method, url, true);
657
xhr.open(method, url, asyncronous);
640
662
/* POST sends the args in application/x-www-form-urlencoded */
641
663
url = encodeURI(path);
642
xhr.open(method, url, true);
664
xhr.open(method, url, asyncronous);
644
666
if (content_type == "multipart/form-data")
646
668
xhr.setRequestHeader("Content-Type",
647
"multipart/form-data, boundary=" + boundary);
669
"multipart/form-data; boundary=" + boundary);
648
670
message = make_multipart_formdata(args, boundary);
652
674
xhr.setRequestHeader("Content-Type", content_type);
653
675
message = make_query_string(args);
655
xhr.setRequestHeader("Content-Length", message.length);
656
677
xhr.send(message);
679
/* Only return the XHR for syncronous requests */
686
/** Attempts to JSON decodes a response object
687
* If a non-200 response or the JSON decode fails then returns null
689
function decode_response(response)
691
if (response.status == 200)
695
var responseText = response.responseText;
696
return JSON.parse(responseText);