Contents

class String

  # Like #index but returns a Range.
  #
  #   "This is a test!".range('test')  #=> 10..13
  #
  #   CREDIT: Trans

  def range(s, offset=0)
    if index(s, offset)
      return ($~.begin(0))..($~.end(0)-1)
    end
    nil
  end

  # Like #index_all but returns an array of Ranges.
  #
  #   "abc123abc123".range_all('abc')  #=> [0..2, 6..8]
  #
  #   TODO: Add offset, perhaps ?
  #
  #   CREDIT: Trans

  def range_all(s, reuse=false)
    r = []; i = 0
    while i < self.length
      rng = range(s, i)
      if rng
        r << rng
        i += reuse ? 1 : rng.end + 1
      else
        break
      end
    end
    r.uniq
  end

  # Returns an array of ranges mapping
  # the characters per line.
  #
  #   "this\nis\na\ntest".range_of_line
  #   #=> [0..4, 5..7, 8..9, 10..13]
  #
  #   CREDIT: Trans

  def range_of_line
    offset=0; charmap = []
    self.each do |line|
      charmap << (offset..(offset + line.length - 1))
      offset += line.length
    end
    charmap
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
facets-2.2.0	lib/core/facets/string/range.rb
facets-2.2.1	lib/core/facets/string/range.rb
facets-2.3.0	lib/core/facets/string/range.rb