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# -*- mode: ruby; ruby-indent-level: 2; indent-tabs-mode: t; tab-width: 2 -*- vim: sw=2 ts=2
module REXML
module Encoding
@encoding_methods = {}
def self.register(enc, &block)
@encoding_methods[enc] = block
end
def self.apply(obj, enc)
@encoding_methods[enc][obj]
end
def self.encoding_method(enc)
@encoding_methods[enc]
end
# Native, default format is UTF-8, so it is declared here rather than in
# an encodings/ definition.
UTF_8 = 'UTF-8'
UTF_16 = 'UTF-16'
UNILE = 'UNILE'
# ID ---> Encoding name
attr_reader :encoding
def encoding=( enc )
old_verbosity = $VERBOSE
begin
$VERBOSE = false
enc = enc.nil? ? nil : enc.upcase
return false if defined? @encoding and enc == @encoding
if enc and enc != UTF_8
@encoding = enc
raise ArgumentError, "Bad encoding name #@encoding" unless @encoding =~ /^[\w-]+$/
@encoding.untaint
begin
require 'rexml/encodings/ICONV.rb'
Encoding.apply(self, "ICONV")
rescue LoadError, Exception
begin
enc_file = File.join( "rexml", "encodings", "#@encoding.rb" )
require enc_file
Encoding.apply(self, @encoding)
rescue LoadError => err
puts err.message
raise ArgumentError, "No decoder found for encoding #@encoding. Please install iconv."
end
end
else
@encoding = UTF_8
require 'rexml/encodings/UTF-8.rb'
Encoding.apply(self, @encoding)
end
ensure
$VERBOSE = old_verbosity
end
true
end
def check_encoding str
# We have to recognize UTF-16, LSB UTF-16, and UTF-8
if str[0,2] == "\xfe\xff"
str[0,2] = ""
return UTF_16
elsif str[0,2] == "\xff\xfe"
str[0,2] = ""
return UNILE
end
str =~ /^\s*<\?xml\s+version\s*=\s*(['"]).*?\1\s+encoding\s*=\s*(["'])(.*?)\2/m
return $3.upcase if $3
return UTF_8
end
end
end
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