Class: Encoding

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# File 'opal/opal/corelib/string/encoding.rb', line 33
def initialize(name, names, ascii, dummy)
 @name = name
 @names = names
 @ascii = ascii
 @dummy = dummy
end

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# File 'opal/opal/corelib/string/encoding.rb', line 29
def default_external
 @default_external
end

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# File 'opal/opal/corelib/string/encoding.rb', line 31
def name
 @name
end

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# File 'opal/opal/corelib/string/encoding.rb', line 31
def names
 @names
end

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# File 'opal/opal/corelib/string/encoding.rb', line 24
def self.find(name)
 return default_external if name == :default_external
 `return Opal.find_encoding(name)`
end

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# File 'opal/opal/corelib/string/encoding.rb', line 4
def self.register(name, options = {}, &block)
 names = [name] + (options[:aliases] || [])
 ascii = options[:ascii] || false
 dummy = options[:dummy] || false
 if options[:inherits]
 encoding = options[:inherits].clone
 encoding.initialize(name, names, ascii, dummy)
 else
 encoding = new(name, names, ascii, dummy)
 end
 encoding.instance_eval(&block) if block_given?
 register = `Opal.encodings`
 names.each do |encoding_name|
 const_set encoding_name.tr('-', '_'), encoding
 register.JS[encoding_name] = encoding
 end
end

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# File 'opal/opal/corelib/string/encoding.rb', line 40
def ascii_compatible?
 @ascii
end

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# File 'opal/opal/corelib/string/encoding.rb', line 48
def binary?
 false
end

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# File 'opal/opal/corelib/string/encoding.rb', line 100
def bytesize(*)
 ::Kernel .raise  ::NotImplementedError 
end

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# File 'opal/opal/corelib/string/encoding.rb', line 61
def charsize(string)
 %x{
 var len = 0;
 for (var i = 0, length = string.length; i < length; i++) {
 var charcode = string.charCodeAt(i);
 if (!(charcode >= 0xD800 && charcode <= 0xDBFF)) {
 len++;
 }
 }
 return len;
 }
end

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# File 'opal/opal/corelib/string/encoding.rb', line 44
def dummy?
 @dummy
end

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# File 'opal/opal/corelib/string/encoding.rb', line 96
def each_byte(*)
 ::Kernel .raise  ::NotImplementedError 
end

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# File 'opal/opal/corelib/string/encoding.rb', line 74
def each_char(string, &block)
 %x{
 var low_surrogate = "";
 for (var i = 0, length = string.length; i < length; i++) {
 var charcode = string.charCodeAt(i);
 var chr = string.charAt(i);
 if (charcode >= 0xDC00 && charcode <= 0xDFFF) {
 low_surrogate = chr;
 continue;
 }
 else if (charcode >= 0xD800 && charcode <= 0xDBFF) {
 chr = low_surrogate + chr;
 }
 if (string.encoding.name != "UTF-8") {
 chr = new String(chr);
 chr.encoding = string.encoding;
 }
 Opal.yield1(block, chr);
 }
 }
end

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# File 'opal/opal/corelib/string/encoding.rb', line 56
def inspect
 "#<Encoding:#{@name}#{' (dummy)' if @dummy}>"
end

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# File 'opal/opal/corelib/string/encoding.rb', line 52
def to_s 
 @name
end