Hello Folks, I've just created a minimal ETag include file for On-Rev. For those not familiar with ETags, they are unique identifiers that are sent as HTTP Headers. When your file change, your ETag for that file also changes. So a browser or any http client may sent a web request like, give me that file is the ETag is different from this one, or if it still the same.
For more information on ETags consult Dr. Wik E. Pedia at http://en.wikipedia.org/wiki/HTTP_ETag What my include does is set the ETag header for the file that includes it. So if you have a helloworld.irev file and include "etag.inc" then, an ETag http header will be set when helloworld.irev is requested, if the file changes, the ETag changes too. Another thing it does is expose an ETag function that will comput an ETag for a given file path. And there's one more thing: sometimes, you just want to know if helloworld.irev changed but you don't want to execute it, for this cases, just pass a url parameter op=etag, like helloworld.irev?op=etag this way the include will set the ETag and force the engine to exit without running any further. This of course just works up to the point where the etag is included, so include it as the first line. you can check the etag.inc by going to: http://andregarzia.on-rev.com/scriptviewer.irev?f=etag.inc (Karma bonus, my script viewer generates links for downloading compressed copies of the viewed files) If you're on a unix like system or any system with CURL, you can do a: curl -v http://andregarzia.on-rev.com/etagtest.irev and see the ETag header being sent. So if you want to compare two files, assuming it's a local and a remote copy, you can simply store the ETag every time you cache the file, then you just query for it later. Hope this is useful andre -- http://www.andregarzia.com All We Do Is Code. _______________________________________________ use-revolution mailing list use-revolution@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution