Module: Timetwister

Defined in:
lib/timetwister.rb,
lib/timetwister/version.rb

Constant Summary collapse

VERSION = 
"0.3.0"

Class Method Summary collapse

Class Method Details

.parse(str, options = {}) ⇒ Object 



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# File 'lib/timetwister.rb', line 7

def self.parse(str, options={})

  out = []
  str = rearrange_conjunctions(str)

  str.split(';').each do |semi|
    semi.split(/\sand\s|\s\&\s/i).each do |conj|

      # check for dates of form "Month Day(-Day), Year" before splitting on commas
      # (removes certainty markers as to not jam the regex)
      if Utilities.replace_ordinals(conj).gsub(/[\?\[\]]/, '').match(/[a-z]*\.?\s[0-9]{1,2}(\s?-[0-9]{1,2})?\,\s[0-9]{4}/i) && \
        !Utilities.replace_ordinals(conj).match(/[0-9]{4}\s[a-z]*\.?\s[0-9]{1,2}/i)
        out << Parser.string_to_dates(conj, options)
      else
        conj.split(',').each do |comma|
          out << Parser.string_to_dates(comma, options)
        end
      end
    end
  end

  return out
end

.rearrange_conjunctions(str) ⇒ Object

sometimes years are considered implicit in complex dates e.g. “1900 January & February” this rearranges them into complete atomic dates



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# File 'lib/timetwister.rb', line 34

def self.rearrange_conjunctions(str)

  # if we don't have a complete year and month, call it quits
  if !str.match(/[0-9]{4}/) || !str.match(/[a-z]+/i)
    return str
  end

  year = str.match(/[0-9]{4}/)[0]
  month = str.match(/[a-z]+/i)[0]
  return_str = ''

  if month.eql?('and')
    return str
  end

  str.split(/\sand\s|\s\&\s/).each do |conj|

    if !conj.match(/[0-9]{4}/)
      conj << ' ' + year
    end

    if !conj.match(/[a-z]+/i)
      conj = month + ' ' + conj
    end

    return_str << ' and ' + conj
  end

  return return_str.sub(/\sand\s/, '')

end