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require 'iconv'
module Redmine
module CodesetUtil
def self.replace_invalid_utf8(str)
return str if str.nil?
if str.respond_to?(:force_encoding)
str.force_encoding('UTF-8')
if ! str.valid_encoding?
str = str.encode("US-ASCII", :invalid => :replace,
:undef => :replace, :replace => '?').encode("UTF-8")
end
elsif RUBY_PLATFORM == 'java'
begin
ic = Iconv.new('UTF-8', 'UTF-8')
str = ic.iconv(str)
rescue
str = str.gsub(%r{[^\r\n\t\x20-\x7e]}, '?')
end
else
ic = Iconv.new('UTF-8', 'UTF-8')
txtar = ""
begin
txtar += ic.iconv(str)
rescue Iconv::IllegalSequence
txtar += $!.success
str = '?' + $!.failed[1,$!.failed.length]
retry
rescue
txtar += $!.success
end
str = txtar
end
str
end
end
end
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