class DjVuNumberer

Page title management for page number generation

Public Class Methods

new(file) click to toggle source

@see ObjectName#method

Calls superclass method DjVuTools::new

# File lib/djvu-tools/djvu-numberer.rb, line 5
def initialize file
  super
  @sections = []
end

Public Instance Methods

add_section(section) click to toggle source

Add a labeled section. @param [Hash] section @see file:README.rdoc The Numberer section in the README

# File lib/djvu-tools/djvu-numberer.rb, line 13
def add_section section

  section[:delta] ||= 1

  if section[:start].nil?
    raise ArgumentError, 'Cannot label a range of pages with the same title' if ( section[:range].max - section[:range].min > 0 )
    section[:range].each { |n| @djvu.title_page n, section[:title]  }
  else
    section[:range].each_with_index do |n, i|
      number = section[:start] + i * section[:delta].to_i
      number =
        case section[:type]
        when :arabic
          number.to_s
        when :upper_roman
          RomanNumerals::to_roman(number).upcase
        when :lower_roman
          RomanNumerals::to_roman(number).downcase
        end
      @djvu.title_page n, "#{section[:prefix]}#{number}#{section[:suffix]}"
    end
  end
end