Class: Coder::Cleaner::Iconv

Inherits:
Object
  • Object
show all
Defined in:
lib/coder/cleaner/iconv.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(encoding) ⇒ Iconv

Returns a new instance of Iconv.



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# File 'lib/coder/cleaner/iconv.rb', line 34

def initialize(encoding)
  @encoding = encoding.to_s
  @nullbyte = "\0"
  @iconv    = ::Iconv.new("#{encoding}//ignore", @encoding)
  @nullbyte.encode! @encoding if @nullbyte.respond_to? :encode!
rescue ::Iconv::InvalidEncoding => e
  raise Coder::InvalidEncoding, e.message
end

Class Method Details

.available? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/coder/cleaner/iconv.rb', line 27

def self.available?
  load_iconv
  !!::Iconv.conv("iso-8859-1//ignore", "utf-8", "\305\253" + "a"*8160)
rescue Exception
  false
end

.load_iconv ⇒ Object 



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# File 'lib/coder/cleaner/iconv.rb', line 8

def self.load_iconv
  return if defined? ::Iconv
  stderr_was, $stderr = $stderr, StringIO.new
  require 'iconv'
ensure
  $stderr = stderr_was if stderr_was
end

.new ⇒ Object 



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# File 'lib/coder/cleaner/iconv.rb', line 16

def self.new(*)
  load_iconv
  super
end

.supports?(encoding) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/coder/cleaner/iconv.rb', line 21

def self.supports?(encoding)
  encoding.to_s !~ /^ucs/i and ::Iconv.new("#{encoding}//ignore", encoding.to_s)
rescue Exception
  false
end

Instance Method Details

#clean(str) ⇒ Object 



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# File 'lib/coder/cleaner/iconv.rb', line 43

def clean(str)
  string = @iconv.iconv(str).gsub(@nullbyte, "")
  Coder.force_encoding! string, @encoding
rescue ::Iconv::Failure => e
  raise Coder::Error, e.message
end