class Pppt::Helpers

Public Class Methods

format_page_number(page) click to toggle source
# File lib/pppt/helpers.rb, line 31
def self.format_page_number(page)
  index = page['page'] || '-'
  title = page['action'] || (page['title'] && " - #{page['title']}") || page['h1'] || page['h2'] || page['h3'] || (page['body'] && "     #{Helpers.truncate_screen_width(page['body'].join(''), 15)}")
  format('%02s    %s', index, title)
end
screen_width(str) click to toggle source
# File lib/pppt/helpers.rb, line 26
def self.screen_width(str)
  hankaku_len = str.each_char.count(&:ascii_only?)
  hankaku_len + (str.size - hankaku_len) * 2
end
split_screen_width(str, width = 40) click to toggle source
# File lib/pppt/helpers.rb, line 13
def self.split_screen_width(str, width = 40)
  s = i = r = 0
  str.each_char.each_with_object([]) do |c, res|
    i += c.ascii_only? ? 1 : 2
    r += 1
    next res if i < width
    res << str[s, r]
    s += r
    i = r = 0
    res
  end << str[s, r]
end
truncate_screen_width(str, width, suffix = '...') click to toggle source
# File lib/pppt/helpers.rb, line 2
def self.truncate_screen_width(str, width, suffix = '...')
  i = 0
  str.each_char.inject(0) do |c, x|
    c += x.ascii_only? ? 1 : 2
    i += 1
    next c if c < width
    return str[0, i] + suffix
  end
  str
end