Class: Coder::Cleaner::Java

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

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(encoding) ⇒ Java

Returns a new instance of Java.



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# File 'lib/coder/cleaner/java.rb', line 18

def initialize(encoding)
  @encoding = encoding.to_s.upcase
  @nullbyte = "\0"
  @charset  = ::Java::JavaNioCharset::Charset.for_name(encoding)
  @decoder  = @charset.new_decoder
  @decoder.on_malformed_input(::Java::JavaNioCharset::CodingErrorAction::IGNORE)
  @decoder.on_unmappable_character(::Java::JavaNioCharset::CodingErrorAction::IGNORE)
  @nullbyte.encode! encoding if @nullbyte.respond_to? :encode!
rescue ::Java::JavaNioCharset::UnsupportedCharsetException, ::Java::JavaNioCharset::IllegalCharsetNameException
  raise Coder::InvalidEncoding, "unknown encoding name - #{encoding}"
rescue ::Java::JavaLang::RuntimeException => e
  raise Coder::Error, e.message, e.backtrace
end

Class Method Details

.available? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/coder/cleaner/java.rb', line 7

def self.available?
  require 'java'
  !!::Java::JavaNioCharset::Charset
rescue LoadError, NameError
  false
end

.supports?(encoding) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/coder/cleaner/java.rb', line 14

def self.supports?(encoding)
  encoding.to_s =~ /^utf-8$/i
end

Instance Method Details

#clean(str) ⇒ Object 



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# File 'lib/coder/cleaner/java.rb', line 32

def clean(str)
  buffer = ::Java::JavaNio::ByteBuffer.wrap(str.to_java_bytes)
  string = @decoder.decode(buffer).to_s
  Coder.force_encoding!(string, @encoding).gsub(@nullbyte, '')
rescue ::Java::JavaLang::RuntimeException => e
  raise Coder::Error, e.message, e.backtrace
end