Class: Pppt::Helpers

Inherits:
Object
  • Object
show all
Defined in:
lib/pppt/helpers.rb

Class Method Summary collapse

Class Method Details

.format_page_number(page) ⇒ Object 



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# 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) ⇒ Object 



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# 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) ⇒ Object 



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# 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 = '...') ⇒ Object 



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# 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