# code: # * George Moschovitis # # (c) 2004 Navel, all rights reserved. # $Id: time.rb 167 2004-11-23 14:03:10Z gmosx $ require "time.rb" module N; # = Time # # General time utilities collection # # === Design: # # Implement as a module to avoid class polution. You can # still Ruby's advanced features to include the module in your # class. Passing the object to act upon allows to check for nil, # which isn't possible if you use self. # # === TODO: # # - SOS: add test units. # - add aliases for those methods in Kernel ? # module TimeUtils NOW = Time.now NEVER = Time.mktime(2038) ZERO = Time.mktime(1972) # Convert the time to a nice String representation. # def self.date_time(time) return nil unless time return time.strftime("%d-%m-%Y %H:%M") end # this method calculates the days extrema given two time objects. # start time is the given time1 at 00:00:00 # end time is the given time2 at 23:59:59:999 # # Input: # - the two times (if only time1 is provided then you get an extrema # of exactly one day extrema. # # Output # - the time range. you can get the start/end times using # range methods. # def self.days_extrema(time1, time2=nil) time2 = time1 if (not time2.valid? Time) time2 = NEVER if (time2 <= time1) start_time = Time.self.start_of_day(time1) end_time = self.end_of_day(time2) return (start_time..end_time) end # # set time to start of day # def self.start_of_day(time) return Time.mktime(time.year, time.month, time.day, 0, 0, 0, 0) end # # set time to end of day # def self.end_of_day(time) return Time.mktime(time.year, time.month, time.day, 23, 59, 59, 999) end # returns true only if day of time is included in the # range (stime..etime). Only year days are checked. # def self.time_in_day_range(time, stime=ZERO, etime=NEVER) if (etime <= stime) Logger.debug "Invalid end time (#{etime} < #{stime})" if $DBG etime = NEVER end stime = start_of_day(stime) etime = end_of_day(etime) return (stime..etime).include?(time) end end end # module