Class: ISO8601::DateTime

Inherits:
Object
  • Object
show all
Defined in:
lib/iso8601/dateTime.rb

Overview

TODO:

Review the pattern ‘201005`. It has to be `20-10-05` instead of `2010-05`. The specification doesn’t allow a YYYYMM. It should be always YYYY-MM.

A DateTime representation

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(date_time) ⇒ DateTime

Returns a new instance of DateTime.

Parameters:

  • date_time (String) —

    The datetime pattern



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# File 'lib/iso8601/dateTime.rb', line 14

def initialize(date_time)
  @dt = /^(?:
            (\d{2})(\d{2})? # Year. It can be either two digits (the century) or four digits (the full year)
            (?:
              (-)?(\d{2})
            )? # Month with an optional separator
            (?:
              (\3)?(\d{2}) # Day with an optional separator which is the same for the Month
            )?
          )? # Date
          (?:
            T(\d{2}) # Hour
            (?:
              (:)?(\d{2}) # Minute with an optional separator
            )?
            (?:
              (\8)?(\d{2}) # Second with an optional separator which is the same that for the Minute
            )? # Time
            (
              Z|([+-])
                (\d{2}) # Timezone hour
                (?:
                  (\8)? # Separator which should be the same that for the Minute
                  (\d{2}) # Timezone minute
                )?
            )? # Timezone
          )?
        $/x.match(date_time) or raise ISO8601::Errors::UnknownPattern.new(date_time)

  @date_time = date_time
  @time = @dt[7]
  @date_separator = @dt[3] == @dt[5] ? @dt[3] : nil
  @time_separator = 
  if (!@dt[8].nil? and (!@dt[10].nil? and !@dt[11].nil?) and (!@dt[15].nil? and !@dt[16].nil?)) or
     (!@dt[8].nil? and (!@dt[10].nil? and !@dt[11].nil?) and @dt[16].nil?) or
     (!@dt[8].nil? and @dt[11].nil? and @dt[16].nil?)
    @dt[8]
  else
    nil
  end
  @century = @dt[1].to_i
  @year = @dt[2].nil? ? nil : (@dt[1] + @dt[2]).to_i
  @month = @dt[4].nil? ? nil : @dt[4].to_i
  @day = @dt[6].nil? ? nil : @dt[6].to_i
  @hour = @dt[7].nil? ? nil : @dt[7].to_i
  @minute = @dt[9].nil? ? nil : @dt[9].to_i
  @second = @dt[11].nil? ? nil : @dt[11].to_i
  @timezone = {
    :full => @dt[12].nil? ? (Time.now.gmt_offset / 3600) : (@dt[12] == "Z" ? 0 : @dt[12]),
    :sign => @dt[13],
    :hour => @dt[12].nil? ? (Time.now.gmt_offset / 3600) : (@dt[12] == "Z" ? 0 : @dt[14].to_i),
    :minute => (@dt[12].nil? or @dt[12] == "Z") ? 0 : @dt[13].to_i
  }

  valid_pattern?
  valid_range?
end

Instance Attribute Details

#century ⇒ Object (readonly)

Returns the value of attribute century.



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# File 'lib/iso8601/dateTime.rb', line 11

def century
  @century
end

#day ⇒ Object (readonly)

Returns the value of attribute day.



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# File 'lib/iso8601/dateTime.rb', line 11

def day
  @day
end

#hour ⇒ Object (readonly)

Returns the value of attribute hour.



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# File 'lib/iso8601/dateTime.rb', line 11

def hour
  @hour
end

#minute ⇒ Object (readonly)

Returns the value of attribute minute.



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# File 'lib/iso8601/dateTime.rb', line 11

def minute
  @minute
end

#month ⇒ Object (readonly)

Returns the value of attribute month.



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# File 'lib/iso8601/dateTime.rb', line 11

def month
  @month
end

#second ⇒ Object (readonly)

Returns the value of attribute second.



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# File 'lib/iso8601/dateTime.rb', line 11

def second
  @second
end

#timezone ⇒ Object (readonly)

Returns the value of attribute timezone.



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# File 'lib/iso8601/dateTime.rb', line 11

def timezone
  @timezone
end

#year ⇒ Object (readonly)

Returns the value of attribute year.



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# File 'lib/iso8601/dateTime.rb', line 11

def year
  @year
end

Instance Method Details

#+(d) ⇒ Object

Addition

Parameters:

Raises:

  • (TypeError) 


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# File 'lib/iso8601/dateTime.rb', line 95

def +(d)
  raise TypeError unless d.kind_of? Numeric
  ISO8601::DateTime.new((Time.utc(@year, @month, @day, @hour, @minute, @second) + d).iso8601)
end

#-(d) ⇒ Object

Substraction

Parameters:

Raises:

  • (TypeError) 


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# File 'lib/iso8601/dateTime.rb', line 103

def -(d)
  raise TypeError unless d.kind_of? Numeric
  ISO8601::DateTime.new((Time.utc(@year, @month, @day, @hour, @minute, @second) - d).iso8601)
end

#to_s ⇒ Object

Returns the datetime string representation



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# File 'lib/iso8601/dateTime.rb', line 73

def to_s
  @date_time
end

#to_time ⇒ Time

Converts the object to a Time instance

Returns:

  • (Time) —

    The object converted

Raises:

  • (RangeError) 


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# File 'lib/iso8601/dateTime.rb', line 80

def to_time
  raise RangeError if @year.nil?
  if @month.nil?
    Time.utc(@year)
  elsif @day.nil?
    date = [@year, @month, '01'].join('-')
    Time.parse(date).getutc
  else
    Time.parse(@date_time).getutc
  end
end