Class: Babosa::Transliterator::Base

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/babosa/transliterator/base.rb

Direct Known Subclasses

Cyrillic, Latin

Constant Summary collapse

APPROXIMATIONS = 
{
  "×" => "x",
  "÷" => "/",
  "‐" => "-",
  "‑" => "-",
  "‒" => "-",
  "–" => "-",
  "—" => "-",
  "―" => "-",
  "―" => "-",
  "‘" => "'",
  "‛" => "'",
  "“" => '"',
  "”" => '"',
  "„" => '"',
  "‟" => '"',
  '’' => "'",
  # various kinds of space characters
  "\xc2\xa0"     => " ",
  "\xe2\x80\x80" => " ",
  "\xe2\x80\x81" => " ",
  "\xe2\x80\x82" => " ",
  "\xe2\x80\x83" => " ",
  "\xe2\x80\x84" => " ",
  "\xe2\x80\x85" => " ",
  "\xe2\x80\x86" => " ",
  "\xe2\x80\x87" => " ",
  "\xe2\x80\x88" => " ",
  "\xe2\x80\x89" => " ",
  "\xe2\x80\x8a" => " ",
  "\xe2\x81\x9f" => " ",
  "\xe3\x80\x80" => " ",
}.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Base

Returns a new instance of Base.



64
65
66
67
68
69
70
71
72
73
74
75
76
77
 
# File 'lib/babosa/transliterator/base.rb', line 64

def initialize
  if self.class < Base
    @approximations = self.class.superclass.instance.approximations.dup
  else
    @approximations = {}
  end
  self.class.const_get(:APPROXIMATIONS).inject(@approximations) do |memo, object|
    index       = object[0].unpack("U").shift
    value       = object[1].unpack("C*")
    memo[index] = value.length == 1 ? value[0] : value
    memo
  end
  @approximations.freeze
end

Instance Attribute Details

#approximations ⇒ Object (readonly)

Returns the value of attribute approximations.



62
63
64
 
# File 'lib/babosa/transliterator/base.rb', line 62

def approximations
  @approximations
end

Instance Method Details

#[](codepoint) ⇒ Object

Accepts a single UTF-8 codepoint and returns the ASCII character code used as the transliteration value.



81
82
83
 
# File 'lib/babosa/transliterator/base.rb', line 81

def [](codepoint)
  @approximations[codepoint]
end

#transliterate(string) ⇒ Object 



85
86
87
 
# File 'lib/babosa/transliterator/base.rb', line 85

def transliterate(string)
  string.unpack("U*").map {|char| self[char] || char}.flatten.pack("U*")
end