Discussion on Script Update Checker | Userscripts.org

How to get the @version ?, replied by Jarett

Jarett — Sun, 04 Oct 2009 02:08:40 +0000

Ah, thanks. I figured there was a way to get the local metadata; I just didn't know what it was.

@require usage, replied by ViXaY Xavier

ViXaY Xavier — Fri, 02 Oct 2009 10:04:58 +0000

Currently your script can't be used via @require. Is there a way that you can add that functionality?

basically fetch the ScriptNum from the script that it's being included in? Maybe something using the metadata block comment i made earlier?

another nicer feature would be to use a div instead of an alert, so that the script can continue to function even after an update.
just some thoughts.

How to get the @version ?, replied by ViXaY Xavier

ViXaY Xavier — Fri, 02 Oct 2009 10:00:41 +0000

also check out the metadata block info on http://wiki.greasespot.net/Metadata_block. This has a very good example on parsing metadata for local and remote scripts! :)
I found a problem though when parsing remote meta data I had to make a minor modification.
from

  for each (line in lines) {

  var i=0;
  for each (line in lines) {
    if (++i > lines.length) break; // to control error in looping from remote responses

because the loop was continuing even after reaching the last element... don't know why.

How to get the @version ?, replied by Jarett

Jarett — Thu, 03 Sep 2009 03:43:57 +0000

No problem.

How to get the @version ?, replied by Arias

Arias — Wed, 02 Sep 2009 22:32:47 +0000

yes, that was something i was looking for.
I will try it ! thanks for your time and help !

How to get the @version ?, replied by Jarett

Jarett — Wed, 02 Sep 2009 01:57:13 +0000

You'd have to parse it out of the meta.js file for that script. Probably something like this (I haven't tested this, so there might be some syntax errors):

var script_number=56716;

try
{
	GM_xmlhttpRequest(
	{
		method: 'GET',
		url: 'http://userscripts.org/scripts/source/'+ script_number +'.meta.js?'+new Date().getTime(),
		headers: {'Cache-Control': 'no-cache'},
		onload: function(resp)
		{
			var remote_version;
			
			remote_version=parseInt(/@version\s*(.*?)\s*$/m.exec(resp.responseText)[1]);
			alert('Remote version is: '+ remote_version);
		}
	});
}
catch (err)
{
	alert('An error occurred while checking the version:\n'+ err);
}

How to get the @version ?, replied by Arias

Arias — Tue, 01 Sep 2009 23:59:44 +0000

hm, how to creating a var from the version on the site.

for example if you take my script http://userscripts.org/scripts/show/56716, in the code i got the meta-data "@version".

var localver = "1.2.4.1.1"; //this value can I change manually every time I update the script
var remotever = ? //this value should be the value you can find on the script page, in the upper left corner "Version: 1.2.4.1.1" (it's from the metadata @version in the latest code).

so i can get this to work I can just be using a message when a new version is out, like;
("I new version is out: "+remotever+". Your current version is: "+localver+". Wanna download new one?");

My english is not the best, hope you get what I meant.

How to get the @version ?, replied by Jarett

Jarett — Tue, 01 Sep 2009 23:20:05 +0000

I'm not sure what you're asking.

How to get the @version ?, replied by Arias

Arias — Tue, 01 Sep 2009 18:09:04 +0000

the local version can you just add a variable manually. dont you know about getting the remote "real" version number ?

How to get the @version ?, replied by Jarett

Jarett — Tue, 01 Sep 2009 02:36:56 +0000

I don't know of a way to get any meta-data for the local copy of the script; however, Greasemonkey probably has a way to do it by now.

How to get the @version ?, replied by Arias

Arias — Mon, 31 Aug 2009 23:59:02 +0000

Is there anyway to make var for @version from local and remote ?

So you can see the "real" version number instead av the version number that its getting now.

Thanks for the code btw !

No longer works, replied by Jarett

Jarett — Thu, 30 Apr 2009 03:59:27 +0000

Works now. I changed it to use meta.js instead of scraping the source page; when I made this script, there was no meta.js. I also had to walk uphill both ways in the snow just to get to a computer. Whippersnappers...

No longer works, replied by niknah

niknah — Sun, 19 Apr 2009 05:40:55 +0000

This script no longer works because usersripts.org are printing the source code out differently now.

Archived Comments, replied by greasefury

greasefury — Tue, 21 Oct 2008 11:57:20 +0000

Hi!
Thank you for your great script! I just added it to my dummy_free_fm4_notes script.
Great how easy to use it is!

Archived Comments, replied by Jarett

Jarett — Thu, 21 Aug 2008 03:29:40 +0000

Cool, thanks.

Archived Comments, replied by Mario Huys

Mario Huys — Wed, 20 Aug 2008 09:47:06 +0000

Because updating timestamps by hand is tedious, I've made the "Script Timestamp Updater" script ( http://userscripts.org/scripts/show/32137 ). Each time you "manually" edit a script and save it, it will update the version_timestamp variable. Does not work when uploading a script file.

Contains its own Script Update Checker snippet, so anyone who downloads it will be duly informed of any updates. Note the extra 'if(version_timestamp){...}' around the Checker code. As the script developer I don't want to be informed of any updates, hence my master copy has version_timestamp set to 0 and the extra if() takes care of the rest. Could also be done by setting an extremely high timestamp, but I like to make things explicit.

Edit: Now also updates the script number. It's now ok to set both variables to 0 in your master script, and leave the rest to the script. If you upload from file, after saving return once more to the 'Edit source' page and push the Save button again to ensure that these variables are correctly updated.

Archived Comments, replied by jesus2099

jesus2099 — Sat, 28 Jun 2008 06:30:33 +0000

Hi Jarett !

I'm using Opera which does not have support for GM_* functions. As you script is nice it's getting spread in many other scripts now.

Maybe you would like to add a try { … } catche(e) {} around the function updateCheck(forced) { … in order not to make those scripts fail, even if they would be Opera friendly otherwise (ie. not using any GM_* function).

Example: MusicBrainz Subscriptions

Archived Comments, replied by Astaroth

Astaroth — Mon, 10 Mar 2008 14:06:39 +0000

I'm start using your script with a less modification in my "BattleKnight Autologin" Script ( http://userscripts.org/scripts/show/23744 ).

Archived Comments, replied by Vaughan Chandler

Vaughan Chandler — Sun, 09 Mar 2008 21:42:28 +0000

Hi, thanks a lot for this script. I started using it in my script Facebook Fixer today ( http://userscripts.org/scripts/show/8861 ) and I included a links to your profile and to this script. I would greatly appreciate a link back in your "scripts using update checker" section. Thanks :)

Archived Comments, replied by Jarett

Jarett — Sat, 16 Feb 2008 23:41:24 +0000

Thanks! I think both of those are useful additions. I was also going to change it to take the user to the script page instead of the actual script if it's hosted on userscrips.org; that way they can see what changes have been made to the script before they upgrade. I'll include your changes in the update.

Archived Comments, replied by ngattuso

ngattuso — Sat, 16 Feb 2008 05:20:10 +0000

Nice script. I extended it a little to add error handling and messages for forced updates through the menu. I kept it generic so you could include it here for everyone. The src is at the bottom of my Facebook GM script. Good work

Archived Comments, replied by Jarett

Jarett — Sun, 27 Jan 2008 06:01:19 +0000

That's the entire Greasemonkey philosophy.

Or, at least, it's my philosophy that I apply to Greasemonkey scripts. :P

Archived Comments, replied by `Mods

`Mods — Sat, 26 Jan 2008 19:45:13 +0000

Very good idea.
And very simple to use.

Archived Comments, replied by Jarett

Jarett — Thu, 17 Jan 2008 02:15:58 +0000

Oh, I didn't even know about that function. I have actually been looking for a way around the popup blocker, so I'll change it in the source.

Thanks!

Archived Comments, replied by BlindWanderer

BlindWanderer — Wed, 16 Jan 2008 15:42:13 +0000

I had problems with window.open (popup blocker) so I'm using GM_openInTab instead.