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;
345
/** Writes a JSONable object to the cookie under a particular key
346
* (JSON encoded and URL encoded).
348
function write_cookie(key, value)
350
var sendstr = encodeURIComponent(key) + "="
351
+ encodeURIComponent(JSON.stringify(value))
352
+ "; path=" + urlencode_path(root_dir);
353
/* This actually just assigns to the key, not replacing the whole cookie
354
* as it appears to. */
355
document.cookie = sendstr;
357
/** Reads a cookie which has a JSONable object encoded as its value.
358
* Returns the object, parsed from JSON.
360
function read_cookie(key)
362
var cookies = document.cookie.split(";");
363
var checkstart = encodeURIComponent(key) + "=";
364
var checklen = checkstart.length;
365
for (var i=0; i<cookies.length; i++)
367
var cookie = cookies[i];
368
while (cookie[0] == ' ')
369
cookie = cookie.substr(1);
370
if (cookie.substr(0, checklen) == checkstart)
372
var valstr = cookie.substr(checklen);
373
valstr = decodeURIComponent(valstr);
374
return JSON.parse(valstr);
344
379
/** Given an argument map, as output in the args parameter of the return of
345
380
* parseurl, gets the first occurence of an argument in the URL string.
346
381
* If the argument was not found, returns null.
456
491
function pathlist_to_path(pathlist)
458
493
ret = path_join.apply(null, pathlist);
459
if (ret[ret.length-1] != '/')
494
if (ret.charAt(ret.length-1) != '/')
477
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));
480
523
/** Given a path, gets the "basename" (the last path segment).
482
525
function path_basename(path)
495
538
return str.substr(str.length - substring.length) == substring;
498
/** Equivalent to Python's repr.
499
* Gets the JavaScript string representation.
500
* Actually just calls JSON.stringify.
504
return JSON.stringify(str);
507
541
/** Removes all occurences of a value from an array.
509
543
Array.prototype.removeall = function(val)
554
/** 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.
555
615
* Sends the XMLHttpRequest object containing the completed response to a
556
616
* specified callback function.
558
618
* \param callback A callback function. Will be called when the response is
559
619
* complete. Passed 1 parameter, an XMLHttpRequest object containing the
560
* completed response.
620
* completed response. If callback is null this is a syncronous request
621
* otherwise this is an asynchronous request.
561
622
* \param app IVLE app to call (such as "fileservice").
562
623
* \param path URL path to make the request to, within the application.
563
624
* \param args Argument object, as described in parse_url and friends.
575
636
/* A random string, for multipart/form-data
576
637
* (This is not checked against anywhere else, it is solely defined and
577
638
* used within this function) */
578
var boundary = "48234n334nu7n4n2ynonjn234t683jyh80j";
639
var boundary = random_string(20);
579
640
var xhr = new_xmlhttprequest();
580
xhr.onreadystatechange = function()
582
if (xhr.readyState == 4)
641
var asyncronous = callback != null;
644
xhr.onreadystatechange = function()
646
if (xhr.readyState == 4)
587
652
if (method == "GET")
589
654
/* GET sends the args in the URL */
590
655
url = build_url({"path": path, "args": args});
591
656
/* open's 3rd argument = true -> asynchronous */
592
xhr.open(method, url, true);
657
xhr.open(method, url, asyncronous);
597
662
/* POST sends the args in application/x-www-form-urlencoded */
598
663
url = encodeURI(path);
599
xhr.open(method, url, true);
664
xhr.open(method, url, asyncronous);
601
666
if (content_type == "multipart/form-data")
603
668
xhr.setRequestHeader("Content-Type",
604
"multipart/form-data, boundary=" + boundary);
669
"multipart/form-data; boundary=" + boundary);
605
670
message = make_multipart_formdata(args, boundary);
609
674
xhr.setRequestHeader("Content-Type", content_type);
610
675
message = make_query_string(args);
612
xhr.setRequestHeader("Content-Length", message.length);
613
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);