Class: Data::LocalDateTime

Inherits:
LocalTime
  • Object
show all
Defined in:
lib/barometer/data/local_datetime.rb

Overview

A simple DateTime class

A time class that represents the local date_time ... it has no concept of time zone

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(y, mon, d, h = 0, m = 0, s = 0) ⇒ LocalDateTime

Returns a new instance of LocalDateTime.

Raises:

  • (ArgumentError) 


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# File 'lib/barometer/data/local_datetime.rb', line 13

def initialize(y,mon,d,h=0,m=0,s=0)
  raise(ArgumentError, "invalid date") unless y && mon && d && Date.civil(y,mon,d)
  @year = y
  @month = mon
  @day = d
  super(h,m,s)
  self
end

Instance Attribute Details

#day ⇒ Object

Returns the value of attribute day.



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# File 'lib/barometer/data/local_datetime.rb', line 11

def day
  @day
end

#month ⇒ Object

Returns the value of attribute month.



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# File 'lib/barometer/data/local_datetime.rb', line 11

def month
  @month
end

#year ⇒ Object

Returns the value of attribute year.



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# File 'lib/barometer/data/local_datetime.rb', line 11

def year
  @year
end

Class Method Details

.parse(string, format = nil) ⇒ Object 



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# File 'lib/barometer/data/local_datetime.rb', line 55

def self.parse(string, format=nil)
  return nil unless string
  return string if string.is_a?(Data::LocalDateTime)

  year = nil; month = nil; day = nil;
  hour = nil; min = nil; sec = nil;
  if string.is_a?(Time) || string.is_a?(DateTime)
    year = string.year
    month = string.mon
    day = string.day
    hour = string.hour
    min = string.min
    sec = string.sec
  elsif string.is_a?(Date)
    year = string.year
    month = string.mon
    day = string.day
  elsif string.is_a?(String)
    begin
      datetime = if format
        Time.strptime(string, format)
      else
        DateTime.parse(string)
      end
      year = datetime.year
      month = datetime.mon
      day = datetime.day
      hour = datetime.hour
      min = datetime.min
      sec = datetime.sec
    rescue ArgumentError
      return nil
    end
  end
  Data::LocalDateTime.new(year, month, day, hour, min, sec)
end

Instance Method Details

#<=>(other) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/barometer/data/local_datetime.rb', line 104

def <=>(other)
  if other.is_a?(String) || other.is_a?(Time) || other.is_a?(DateTime) || other.is_a?(Date)
    the_other = Data::LocalDateTime.parse(other)
  else
    the_other = other
  end
  raise ArgumentError unless the_other.is_a?(Data::LocalDateTime) || the_other.is_a?(Data::LocalTime)

  if ((other.is_a?(String) || other.is_a?(Time) || other.is_a?(DateTime)) &&
    the_other.is_a?(Data::LocalDateTime)) || other.is_a?(Data::LocalDateTime)
    # we are counting days + seconds
    if (_total_days <=> the_other._total_days) == 0
      return total_seconds <=> the_other.total_seconds
    else
      return _total_days <=> the_other._total_days
    end
  elsif other.is_a?(Date) && the_other.is_a?(Data::LocalDateTime)
    # we are counting days
    return _total_days <=> the_other._total_days
  elsif the_other.is_a?(Data::LocalTime)
    # we are counting seconds
    return total_seconds <=> the_other.total_seconds
  end
end

#_total_days ⇒ Object

this assumes all years have 366 days (which only is true for leap years) but since this is just for comparisons, this will be accurate



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# File 'lib/barometer/data/local_datetime.rb', line 140

def _total_days
  self.to_d.yday + (@year * 366)
end

#nil? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/barometer/data/local_datetime.rb', line 135

def nil?; @year == 0 && @month == 0 && @day == 0 && super; end

#parse(string, format = nil) ⇒ Object 



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# File 'lib/barometer/data/local_datetime.rb', line 43

def parse(string, format=nil)
  return unless string
  new_date = Data::LocalDateTime.parse(string, format)
  @year = new_date.year
  @month = new_date.month
  @day = new_date.day
  @hour = new_date.hour
  @min = new_date.min
  @sec = new_date.sec
  self
end

#to_d ⇒ Object

convert to a Date class



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# File 'lib/barometer/data/local_datetime.rb', line 94

def to_d
  Date.civil(@year, @month, @day)
end

#to_dt ⇒ Object

convert to a DateTime class



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# File 'lib/barometer/data/local_datetime.rb', line 100

def to_dt
  DateTime.new(@year, @month, @day, @hour, @min, @sec)
end

#to_s(time = false) ⇒ Object 



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# File 'lib/barometer/data/local_datetime.rb', line 129

def to_s(time=false)
  datetime = self.to_dt
  format = (time ? "%Y-%m-%d %I:%M:%S %p" : "%Y-%m-%d")
  datetime.strftime(format).downcase
end