Class: Tk::EncodedString

Inherits:
String
  • Object
show all
Defined in:
lib/tk/encodedstr.rb

Direct Known Subclasses

BinaryString, UTF8_String

Constant Summary collapse

Encoding = 
nil

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(str, enc = nil) ⇒ EncodedString

Returns a new instance of EncodedString.



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# File 'lib/tk/encodedstr.rb', line 68

def initialize(str, enc = nil)
  super(str)
  # @encoding = ( enc || 
  #              ((self.class::Encoding)? 
  #                  self.class::Encoding : Tk.encoding_system) )
  @encoding = ( enc || 
               ((self.class::Encoding)?
                     self.class::Encoding : 
                     ((Tk.encoding)? Tk.encoding : Tk.encoding_system) ) )
end

Instance Attribute Details

#encoding ⇒ Object (readonly)

Returns the value of attribute encoding.



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# File 'lib/tk/encodedstr.rb', line 79

def encoding
  @encoding
end

Class Method Details

.new_with_utf_backslash(str, enc = nil) ⇒ Object 



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# File 'lib/tk/encodedstr.rb', line 60

def self.new_with_utf_backslash(str, enc = nil)
  self.new('', enc).replace(self.subst_utf_backslash(str))
end

.new_without_utf_backslash(str, enc = nil) ⇒ Object 



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# File 'lib/tk/encodedstr.rb', line 64

def self.new_without_utf_backslash(str, enc = nil)
  self.new('', enc).replace(str)
end

.subst_tk_backslash(str) ⇒ Object 



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# File 'lib/tk/encodedstr.rb', line 21

def self.subst_tk_backslash(str)
  TclTkLib._subst_Tcl_backslash(str)
end

.subst_utf_backslash(str) ⇒ Object 



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# File 'lib/tk/encodedstr.rb', line 13

def self.subst_utf_backslash(str)
  # str.gsub(/\\u([0-9A-Fa-f]{1,4})/){[$1.hex].pack('U')}
  TclTkLib._subst_UTF_backslash(str)
end

.to_backslash_sequence(str) ⇒ Object 



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# File 'lib/tk/encodedstr.rb', line 38

def self.to_backslash_sequence(str)
  str.unpack('U*').collect{|c|
    if c <= 0x1F  # control character
      case c
      when 0x07; '\a'
      when 0x08; '\b'
      when 0x09; '\t'
      when 0x0a; '\n'
      when 0x0b; '\v'
      when 0x0c; '\f'
      when 0x0d; '\r'
      else
        format('\x%02X', c)
      end
    elsif c <= 0xFF  # ascii character
      c.chr
    else
      format('\u%X', c)
    end
  }.join('')
end

.utf_backslash(str) ⇒ Object 



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# File 'lib/tk/encodedstr.rb', line 17

def self.utf_backslash(str)
  self.subst_utf_backslash(str)
end

.utf_to_backslash(str) ⇒ Object 



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# File 'lib/tk/encodedstr.rb', line 34

def self.utf_to_backslash(str)
  self.utf_to_backslash_sequence(str)
end

.utf_to_backslash_sequence(str) ⇒ Object 



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# File 'lib/tk/encodedstr.rb', line 25

def self.utf_to_backslash_sequence(str)
  str.unpack('U*').collect{|c|
    if c <= 0xFF  # ascii character
      c.chr
    else
      format('\u%X', c)
    end
  }.join('')
end