string_extensions.rb

# encoding: utf-8
class String
  EUROPEAN_ACCENTS = {
    ['Ã','Ä','Â','À'] => 'A',
    ['á','à','â','ä','ã'] => 'a',
    ['Ë','É','È','Ê'] => 'E',
    ['é','è','ê','ë'] => 'e',
    ['Î','Ì'] => 'I',
    ['í','ì','î','ï'] => 'i',
    ['Õ','Ö','Ô','Ò'] => 'O',
    ['ó','ò','ô','ö','õ'] => 'o',
    ['œ'] => 'oe',
    ['ç'] => 'c',
    ['ñ'] => 'n',
    ['ÿ'] => 'y',
    ['œ'] => 'oe',
    ['ß'] => 'ss',
    ['ú','ù','û','ü','Û','Ù'] => 'u'
  }.freeze

  def without_accents
    self.clone.without_accents!
  end
  
  def without_accents!
    EUROPEAN_ACCENTS.each { |accents, replacement| accents.each { |accent| gsub! accent, replacement } }
    self
  end
  
  def limit_to(limit)
    (self.size > limit and limit > 0) ? self[0..(limit - 1)] : self
  end
  
  def sanitized_and_limited_to(limit)
    strip.without_accents.limit_to(limit)
  end
  
  def all_upcase?
    self == self.upcase
  end
  
  def all_downcase?
    self == self.downcase
  end
  
  def crop(length)
    self.length > length ? self[0..(length - 1)] : self
  end
  
  def without_orphan_in_html
    clone.tap do |str|
      str.without_orphan_in_html!
    end
  end
  
  def without_orphan_in_html!
    self.gsub! /\s+(\S+)$/, " \\1"
    self
  end
end