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Re: DogFood

From: Henri Sivonen <hsivonen@iki.fi>
Date: Mon, 14 Jan 2008 11:41:50 +0200
Cc: public-html <public-html@w3.org>
Message-Id: <250A7BE8-3FE1-4716-A28A-7138A51526D7@iki.fi>
To: Sam Ruby <rubys@us.ibm.com>

On Jan 14, 2008, at 05:48, Sam Ruby wrote:

> If my front page ceases to validate at any time, please let me know  
> (publicly or privately, I care not).


> Also, I would be interested in installing the validator locally.   
> While that appears to be possible, what I really would like to do is  
> to keep my local installation up to date.  Thoughts and pointers on  
> how to do that would be appreciated.

The build script downloads the source from Subversion, downloads  
dependency jars from around the Web, builds the source and runs the  
validator. Running the script twice in a row should always give you  
the latest version.

There are three issues with keeping an installation up-to-date:
  1) Self-updating of the script isn't polished. Hence, when the build  
script changes, you need to run it twice: the first time updates the  
build script and the second time runs the new build script.
  2) There's no automatic notification mechanism for telling an  
installation to self-update. Instead, you need to stop the instance  
manually and rerun the build script when you know you want to sync  
with the svn repo.
  3) The validator scrapes the spec for UI strings and, therefore,  
needs a copy of the spec that is compatible with the scraper. The spec  
isn't in the validator svn, though, so you need to give the build  
script a file URI or an HTTP URI to a suitable copy. The live spec  
isn't suitable, because it may become incompatible with the scraper  
and the schema without warning. Right now, I'm hosting snapshots of  
the spec and the About page says which magic URI is in sync, but this  
again lacks a notification mechanism and is generally bad. It seems  
like a bad idea to keep a copy of the large spec file in the validator  
repo. But, then, perhaps keeping a copy of the spec there would be the  
most practical thing to do after all.

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Henri Sivonen
Received on Monday, 14 January 2008 09:42:00 UTC

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