Module: Manilla::Folder

Defined in:
lib/manilla/folder.rb

Overview

Breaks long logical lines of text into multiple delimited representations. Lines can be folded into a set width of octets excluding line breaks.

Class Method Summary collapse

Class Method Details

.call(text, maxwidth, delimiter, break_on) ⇒ Object 



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# File 'lib/manilla/folder.rb', line 7

def self.call(text, maxwidth, delimiter, break_on)
  lines = []

  value = text.strip
  value = value.gsub(/\n+/, '')
  value = value.gsub(/\s{2,}/, '')

  while value.size > maxwidth
    count = maxwidth

    while count
      break_index = nil
      break_pos = nil
      line = value[0, count]

      if break_on == :word
        break_index = line.rindex(/\s/)
        break_pos = break_index + 1 if break_index
        line = line[0, break_pos] if break_pos

        count = break_pos || maxwidth
      end

      oct = line.size

      if oct > maxwidth
        count -= oct - maxwidth
      else
        lines << line
        value = value[count, value.size]
        break
      end
    end
  end

  lines << value unless value.strip.empty?

  lines.join(delimiter)
end