# coding: US-ASCII
module REXML
module Encoding
# ID ---> Encoding name
attr_reader :encoding
def encoding=(encoding)
encoding = encoding.name if encoding.is_a?(Encoding)
if encoding.is_a?(String)
original_encoding = encoding
encoding = find_encoding(encoding)
unless encoding
raise ArgumentError, "Bad encoding name #{original_encoding}"
end
end
return false if defined?(@encoding) and encoding == @encoding
if encoding
@encoding = encoding.upcase
else
@encoding = 'UTF-8'
end
true
end
def encode(string)
string.encode(@encoding)
end
def decode(string)
string.encode(::Encoding::UTF_8, @encoding)
end
private
def find_encoding(name)
case name
when /\Ashift-jis\z/i
return "SHIFT_JIS"
when /\ACP-(\d+)\z/
name = "CP#{$1}"
when /\AUTF-8\z/i
return name
end
begin
::Encoding::Converter.search_convpath(name, 'UTF-8')
rescue ::Encoding::ConverterNotFoundError
return nil
end
name
end
end
end
