Class: Multibyte::Handlers::UnicodeDatabase

Inherits:
Object
  • Object
show all
Defined in:
lib/multibyte/handlers/utf8_handler.rb,
lib/multibyte/generators/generate_tables.rb

Overview

:nodoc:

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#boundary=(value) ⇒ Object (writeonly)

Sets the attribute boundary

Parameters:

  • value —

    the value to set the attribute boundary to.



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# File 'lib/multibyte/handlers/utf8_handler.rb', line 11

def boundary=(value)
  @boundary = value
end

#codepoints=(value) ⇒ Object (writeonly)

Sets the attribute codepoints

Parameters:

  • value —

    the value to set the attribute codepoints to.



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# File 'lib/multibyte/handlers/utf8_handler.rb', line 11

def codepoints=(value)
  @codepoints = value
end

#composition_exclusion=(value) ⇒ Object (writeonly)

Sets the attribute composition_exclusion

Parameters:

  • value —

    the value to set the attribute composition_exclusion to.



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# File 'lib/multibyte/handlers/utf8_handler.rb', line 11

def composition_exclusion=(value)
  @composition_exclusion = value
end

#composition_map=(value) ⇒ Object (writeonly)

Sets the attribute composition_map

Parameters:

  • value —

    the value to set the attribute composition_map to.



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# File 'lib/multibyte/handlers/utf8_handler.rb', line 11

def composition_map=(value)
  @composition_map = value
end

#cp1252=(value) ⇒ Object (writeonly)

Sets the attribute cp1252

Parameters:

  • value —

    the value to set the attribute cp1252 to.



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# File 'lib/multibyte/handlers/utf8_handler.rb', line 11

def cp1252=(value)
  @cp1252 = value
end

Class Method Details

.dirname ⇒ Object

Returns the directory in which the data files are stored



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# File 'lib/multibyte/handlers/utf8_handler.rb', line 27

def self.dirname
  File.dirname(__FILE__) + '/'
end

.filename ⇒ Object

Returns the filename for the data file for this version



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# File 'lib/multibyte/handlers/utf8_handler.rb', line 32

def self.filename
  File.expand_path File.join(dirname, "unicode_tables.dat")
end

.load ⇒ Object 



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# File 'lib/multibyte/generators/generate_tables.rb', line 10

def self.load
  [Hash.new(Codepoint.new),[],{},{}]
end

Instance Method Details

#[](index) ⇒ Object

Shortcut to ucd.codepoints[]



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# File 'lib/multibyte/handlers/utf8_handler.rb', line 24

def [](index); codepoints[index]; end

#load ⇒ Object

Loads the unicode database and returns all the internal objects of UnicodeDatabase Once the values have been loaded, define attr_reader methods for the instance variables.



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# File 'lib/multibyte/handlers/utf8_handler.rb', line 38

def load
  begin
    @codepoints, @composition_exclusion, @composition_map, @boundary, @cp1252 = File.open(self.class.filename, 'rb') { |f| Marshal.load f.read }
  rescue Exception => e
      raise IOError.new("Couldn't load the unicode tables for UTF8Handler (#{e.message}), handler is unusable")
  end
  @codepoints ||= Hash.new(Codepoint.new)
  @composition_exclusion ||= []
  @composition_map ||= {}
  @boundary ||= {}
  @cp1252 ||= {}
  
  # Redefine the === method so we can write shorter rules for grapheme cluster breaks
  @boundary.each do |k,_|
    @boundary[k].instance_eval do
      def ===(other)
        detect { |i| i === other } ? true : false
      end
    end if @boundary[k].kind_of?(Array)
  end

  # define attr_reader methods for the instance variables
  class << self
    attr_reader :codepoints, :composition_exclusion, :composition_map, :boundary, :cp1252
  end
end