[pmwiki-users] Re: ?action=dc (Dublin Core Metadata)

[Patrick R. Michaud]

On Thu, Dec 01, 2005 at 10:46:29PM +0100, chr at home.se wrote:
> I suspect I'm going to want some metadata related to when a page was last
> modified, so that pmwiki-mode for emacs can check if the page has changed.
> 
> Right now the closest this is the 'date' property, right? It might be very 
> convenient if there was some property like:
> 
> 	last-modified:230002020

Just use the <dc:date> property directly.  It'll contain the last
modified value in ISO 8601 format:

    <dc:date>2005-12-01T17:52Z</dc:date>

and this can be easily compared against any other <dc:date> value
to determine if the page has changed.  

> Speaking of parse... can I rely on lines[*] not being broken, or does
> pmwiki-mode actually have to parse the whole XML-stuff?

I think it's relatively safe to assume for this that simple elements
like <dc:date> won't be broken across lines.

I'm still also amenable to providing a custom HTTP header with
?action=source that can contain the date and time.

> [*] Strictly speaking, it'd be enough if I knew only the relevant line 
> wasn't broken.

As a regular expression, I would just search the output for

    /<dc:date>(.*?)<\/dc:date>/

and not worry about newlines.  (But perhaps it's not easy to do
regexps in the environment you're in.)

Pm