From: Jeremy McAnally <jeremymcanally@...>
Date: 2007-01-03T01:56:04+09:00
Subject: Re: Detecting holidays

Try this:

class Date
  def is_national_holiday?
     this_year = self.year.to_s
     # Not perfect; Thanksgiving and Easter change...
     dates = [this_year + '-12-25', this_year + '-12-24', this_year +
'-1-1', this_year + '-7-4', this_year + '-11-28']

     if (dates.include?(self.to_s)):
        return true
     else
        return false
     end
   end
end



irb(main):263:0> christmas = Date.parse('2007-12-25')
=> #<Date: 4908919/2,0,2299161>
irb(main):264:0> christmas.is_national_holiday?
=> true
irb(main):265:0> today = Date.today
=> #<Date: 4908205/2,0,2299161>
irb(main):266:0> today.is_national_holiday?
=> false

Again, it doesn't get Thanksgiving right or others that change like
Easter.  If you want, I could hack it in; otherwise, this should get
you on the right path. ;)

--Jeremy

On 1/2/07, Daniel Berger <djberg96@gmail.com> wrote:
> Hi all,
>
> Well, it took seven years, but I've finally been annoyed enough by
> reports failing on national holidays to say something.  Report writers
> know the routine:
>
> Them: Why did the report fail for Jan. 1st?
> Me: National holiday. There was no data to grab.  Ignore the failure.
> Them: Oh, right.
>
> Repeat again for Memorial Day, July 4th, Thanksgiving, and Christmas.
>
> Is there a package out there that deals with national holidays (for any
> nation)?  The only thing I came across what date2, but that only seems
> to handle Japanese national holidays.  I guess I'm looking for
> something like Perl's Date::Calc [1] module or, more specifically, it's
> Date::Calendar::Profiles [2] module.  Or something like Perl's
> Date::Holidays::XXX [3] approach (I'm not sure which is preferred these
> days).
>
> Ideally, I'd like to be able to do something like:
>
> if Date.today.is_national_holiday?
>    exit # Don't run report on this day
> end
>
> And no, it's not a simple matter of using something more flexible than
> cron because some reports pull data from X days back or ahead, not on
> the date they're run.
>
> Thoughts?
>
> - Dan
>
> [1] http://search.cpan.org/~stbey/Date-Calc-5.4/Calendar.pod
> [2]
> http://search.cpan.org/~stbey/Date-Calc-5.4/lib/Date/Calendar/Profiles.pod
> [3]
> http://search.cpan.org/~jonasbn/Date-Holidays-0.08/lib/Date/Holidays.pm
>
>
>


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