[pmwiki-users] experimental - pagelist conditionals

[Patrick R. Michaud]

On Wed, May 02, 2007 at 10:43:58AM +0200, Roman wrote:
> >    (:if date 2007-05-01..2007-05-31 {*$Name} :)
> 
> I assume that each parameter accepts any expression. For example, if
> page names are in form "News-yyyy-mm-dd", the following condition
> should work. Am I right?
> 
> (:if date 2007-05-01..2007-05-31 {(substr {*$Name} 5)} :)

Yes... and it's not necessary to use the {(substr ...)} .
The date converter will search any string for the first
date-looking-thing that it finds (see below).  So, even 
for a page named "News-yyyy-mm-dd" one can do

    (:if date 2007-05-01..2007-05-31 {*$Name}:)


The date converter understands the following formats:

-  A string starting with '@' and a sequence of digits is treated
   as a unix timestamp
-  Anything that fits one of the following patterns
     yyyymmdd   yyyy-mm-dd  yyyy.mm.dd  yyyy/mm/dd
     yyyymm     yyyy-mm     yyyy.mm     yyyy/mm
   The above does more than a simple digit pattern... for example,
      "yyyy" will only match dates in the range 1900 to 2039,
      "mm" will require the first digit to be a 0 or 1,
      "dd" only matches when the first digit is a 0, 1, 2, or 3
      there can't be any other digits before or after the date
-  The special strings "today", "tomorrow", and "yesterday"
-  As a last resort, it calls PHP's strtotime() function to
   convert to a date.

Pm