Class: Todoist::Utilities

Inherits:
Object
  • Object
show all
Defined in:
lib/todoist/utilities.rb

Constant Summary collapse

MON_FIRST_REGEX = 
/(?<mon>#{mon_opts})\s+(?<day>\d{1,2})(?:(?:st\b)|(?:nd\b)|(?:rd\b)|(?:th\b))?/
MON_LAST_REGEX = 
/(?<day>\d{1,2})(?:(?:st\b)|(?:nd\b)|(?:rd\b)|(?:th\b))?\s+(?<mon>#{mon_opts})/
DOW_REGEX = 
/(?<dow>(?:#{dow_opts})s?)/
DUE_REGEX = 
%r{
^ # start of line
\s*\bev(?:ery)? # ev or every
(?<bang>!)? # possible bang in group bang
\s+
(?<dates>.*?) # dates in group dates
\s*
(?:\bat)?\s* # optional keyword at
(?<time>\b\d\d:\d\d\b)?\s* # optional time in group time
(?:(?:\bstarting)\s+(?<start_date>.*?))?\s* # optional starting keyword followed by starting date in group starting
(?:(?:\bending)\s+(?<end_date>.*?))?\s* # optional ending keyword followed by ending date in group ending
$ # end of line
}xi
ORDINAL_REGEX = 
/\b(\d+) # first capture group which is a string of digits
  ( # start of 2nd capture group
  (?:st\b)|(?:nd\b)|(?:rd\b)|(?:th\b) # a series of anonymous capture groups of two letters
                                      # any of these letter pairs will match
)/x

Class Method Summary collapse

Class Method Details

.normalize_due_string(orig_due_string) ⇒ Object 



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# File 'lib/todoist/utilities.rb', line 28

def normalize_due_string(orig_due_string)
  orig_due_string = orig_due_string.downcase
  mm = orig_due_string.match(DUE_REGEX)
  if mm.nil?
    raise ArgumentError, "Due String not recognized: #{orig_due_string}"
  end
  if mm[:dates]
    dates = mm[:dates].split(/\s*,\s*/).map(&:downcase)
    new_dates = []
    dates.each do |d|
      if (dm = d.match(/(?<num>\d+)\s+weeks?/))
        if dm[:num].to_i <= 7
          d = "#{dm[:num].to_i * 7} days"
        end
      elsif (dm = d.match(/(?<mon>\d{1,2})\/(?<day>\d{1,2})/))
        d = "#{dm[:day]} #{Date::ABBR_MONTHNAMES[dm[:mon].to_i].downcase}"
      elsif (dm = d.match(MON_FIRST_REGEX) || d.match(MON_LAST_REGEX))
        d = "#{dm[:day]} #{dm[:mon][0..2]}"
      elsif (dm = d.match(DOW_REGEX))
        d = d.gsub(dm[:dow], dm[:dow][0..2])
      end
      new_dates << d
    end
    new_dates = new_dates.join(", ")
    new_dates.gsub!(ORDINAL_REGEX, '\1')
  end
  new_due = "ev#{mm[:bang]} #{new_dates}"
  new_due += " at #{mm[:time]}" if mm[:time]
  new_due += " ending #{mm[:end_date]}" if mm[:end_date]
  if new_due != orig_due_string
    new_due.strip
  end
end