Class: PickupLine::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/pickup_line/parser.rb

Instance Method Summary collapse

Constructor Details

#initialize(date) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/pickup_line/parser.rb', line 6

def initialize(date)
  @date = date
end

Instance Method Details

#locate(str) ⇒ Object 



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# File 'lib/pickup_line/parser.rb', line 10

def locate(str)
  str = str.downcase
  words = ['one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine', 'ten']
  # Full month names with date
  if str =~ /(#{Date::MONTHNAMES.compact.map(&:downcase).join('|')})\s+(\d{1,2})(?!\d)/
    month_num = Date::MONTHNAMES.compact.map(&:downcase).index($1) + 1
    future_date $2.to_i, month_num, @date.year
  # Abbreviated month names with date
  elsif str =~ /(#{Date::ABBR_MONTHNAMES.compact.map(&:downcase).join('|')})\.?\s+(\d{1,2})(?!\d)/
    month_num = Date::ABBR_MONTHNAMES.compact.map(&:downcase).index($1) + 1
    day = $2 ? $2.to_i : -1
    future_date day, month_num, @date.year
  # (next) Day names
  elsif str =~ /next\s+(#{Date::DAYNAMES.map(&:downcase).join('|')})/
    dindex = Date::DAYNAMES.map(&:downcase).index $1
    d = @date
    d += 1 until d.wday == 0 # go to next week
    d += 1 until d.wday == dindex
    d
  # Day names
  elsif str =~ /(#{Date::DAYNAMES.map(&:downcase).join('|')})/
    dindex = Date::DAYNAMES.map(&:downcase).index $1
    d = @date
    d += 1 until d.wday == dindex
    d
  # In N days
  elsif str =~ /in\s+(\d)\s+days?/
    @date + $1.to_i
  # In N days (with words)
  elsif str =~ /in\s+(#{words.join('|')})\s+days?/
    days = words.index($1) + 1
    @date + days
  # Today
  elsif str.include?('today')
    @date
  # Tomorrow
  elsif str.include?('tomorrow')
    @date + 1
  end
end