template::util::date::daysInMonth (public)

 template::util::date::daysInMonth month [ year ]

Defined in packages/acs-templating/tcl/date-procs.tcl

Parameters:

month (required)

year (optional, defaults to "0")

an integer representing the number of the year in the Gregorian calendar.

Returns:

the number of days in a month, accounting for leap years.

See Also:

• https://en.wikipedia.org/wiki/Leap_year#Algorithm

Partial Call Graph (max 5 caller/called nodes):

Testcases:

No testcase defined.

Source code:

    # Something like this oneliner might work and delegate the leap
    # year calculation to the clock command. However, it would be
    # significantly slower...
    # clock format [clock add [clock scan [format "%04d" $year]-[format "%02d" $month]-01 -format %Y-%m-%d] 1 month -1 day] -format %d

    set month [string trimleft $month 0]
    set year [string trimleft $year 0]
    if {$year eq ""} {set year 0}

    variable month_data
    set month_desc $month_data($month)
    set days [lindex $month_desc 2]

    if { $month == 2
         && ( (($year % 4) == 0 && ($year % 100) != 0) ||
              (($year % 400) == 0) )
     } {
        return [expr {$days + 1}]
    } else {
        return $days
    }

XQL Not present:

Generic, PostgreSQL, Oracle