Build a year from a 2 digit suffix
@example
make_year(96, 50) #=> 1996 make_year(79, 20) #=> 2079 make_year(00, 50) #=> 2000
@param [Integer] year The two digit year to build from @param [Integer] bias The amount of future years to bias @return [Integer] The 4 digit year
# File lib/chronic/scalar.rb, line 78 def self.make_year(year, bias) return year if year.to_s.size > 2 start_year = Chronic.time_class.now.year - bias century = (start_year / 100) * 100 full_year = century + year full_year += 100 if full_year < start_year full_year end
Scan an Array of {Token}s and apply any necessary Scalar tags to each token
@param [Array<Token>] tokens Array of tokens to scan @param [Hash] options Options specified in {Chronic.parse} @return [Array] list of tokens
# File lib/chronic/scalar.rb, line 11 def self.scan(tokens, options) tokens.each_index do |i| if t = scan_for_scalars(tokens[i], tokens[i + 1]) then tokens[i].tag(t) end if t = scan_for_days(tokens[i], tokens[i + 1]) then tokens[i].tag(t) end if t = scan_for_months(tokens[i], tokens[i + 1]) then tokens[i].tag(t) end if t = scan_for_years(tokens[i], tokens[i + 1], options) then tokens[i].tag(t) end end end
@param [Token] token @param [Token] post_token @return [ScalarDay, nil]
# File lib/chronic/scalar.rb, line 34 def self.scan_for_days(token, post_token) if token.word =~ %r^\d\d?$/ toi = token.word.to_i unless toi > 31 || toi < 1 || (post_token && DAY_PORTIONS.include?(post_token.word)) return ScalarDay.new(toi) end end end
@param [Token] token @param [Token] post_token @return [ScalarMonth, nil]
# File lib/chronic/scalar.rb, line 46 def self.scan_for_months(token, post_token) if token.word =~ %r^\d\d?$/ toi = token.word.to_i unless toi > 12 || toi < 1 || (post_token && DAY_PORTIONS.include?(post_token.word)) return ScalarMonth.new(toi) end end end
@param [Token] token @param [Token] post_token @return [Scalar, nil]
# File lib/chronic/scalar.rb, line 23 def self.scan_for_scalars(token, post_token) if token.word =~ %r^\d*$/ unless post_token && DAY_PORTIONS.include?(post_token.word) return Scalar.new(token.word.to_i) end end end
@param [Token] token @param [Token] post_token @param [Hash] options Options specified in {Chronic.parse} @return [ScalarYear, nil]
# File lib/chronic/scalar.rb, line 59 def self.scan_for_years(token, post_token, options) if token.word =~ %r^([1-9]\d)?\d\d?$/ unless post_token && DAY_PORTIONS.include?(post_token.word) year = make_year(token.word.to_i, options[:ambiguous_year_future_bias]) return ScalarYear.new(year.to_i) end end end
# File lib/chronic/scalar.rb, line 87 def to_s 'scalar' end