What is a Calendar Page's Date-Code (I need as argument for view)

I can clarify my question as follows:

How can I determine the 'date-code' that is in effect for a calendar page being generated.

For example, for most calendar pages, I'm referring to the 'date-code' that is shown as the last portion of the URL such as www.mysite.com/calendar/[date-code], such as 2010-04, or 2010-W14.

And for the landing page for calendar there is no 'date-code' in the URL, but it currently shows the calendar for the current month, so as of today, its datecode would be '2010-04'.

I need the date-code so I can set it as an argument for a views block that will go onto that page.

I guess i could write php code to parse the URL, or when there is no date-code, generate a date-code using the current date, but I'm wondering if that string is already available as a variable when creating a calendar page so I can plug it into the view.

Thanks

Thanks, but I tried current date and it did not work for me. Actually, Im not looking for the current date, but the current date-period where yyyy-mm refers to the whole month, and yyy-Wxx refers to the whole week.

I have resolved the issue by writing the following code using php if the date is not provided as an argument. Since this block will only be used on calendar or calendar/* pages I am using:

{ 
$s = substr($_GET['q'],9);
if (strlen($s)>0) return $s;
return date_format(date_now(), 'Y-m');
}

Using the argument I generate, the granularity is ignored. It filters by day, week, month or year depending on what I give it - which is what i wanted - to filter on the granularity of the current calendar.

If i use current date, it seemed to filter on todays date, not the date period of the calendar, but i will check it again and get back to you.