Class: LZWS::Stream::Abstract

Inherits:
Object
  • Object
show all
Includes:
Delegates
Defined in:
lib/lzws/stream/abstract.rb

Direct Known Subclasses

Reader, Writer

Constant Summary

Constants included from Delegates

Delegates::DELEGATES

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Delegates

included

Constructor Details

#initialize(io, options = {}) ⇒ Abstract

Returns a new instance of Abstract.



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# File 'lib/lzws/stream/abstract.rb', line 24

def initialize(io, options = {})
  @raw_stream = create_raw_stream

  Validation.validate_io io
  @io = io

  @stat = Stat.new @io.stat if @io.respond_to? :stat

  set_encoding options[:external_encoding], options[:internal_encoding], options[:transcode_options]
  reset_buffer
  reset_io_advise

  @pos = 0
end

Instance Attribute Details

#external_encoding ⇒ Object (readonly)

Returns the value of attribute external_encoding.



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# File 'lib/lzws/stream/abstract.rb', line 20

def external_encoding
  @external_encoding
end

#internal_encoding ⇒ Object (readonly)

Returns the value of attribute internal_encoding.



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# File 'lib/lzws/stream/abstract.rb', line 20

def internal_encoding
  @internal_encoding
end

#io ⇒ Object (readonly)

Returns the value of attribute io.



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# File 'lib/lzws/stream/abstract.rb', line 20

def io
  @io
end

#pos ⇒ Object (readonly) Also known as: tell

Returns the value of attribute pos.



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# File 'lib/lzws/stream/abstract.rb', line 20

def pos
  @pos
end

#stat ⇒ Object (readonly)

Returns the value of attribute stat.



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# File 'lib/lzws/stream/abstract.rb', line 20

def stat
  @stat
end

#transcode_options ⇒ Object (readonly)

Returns the value of attribute transcode_options.



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# File 'lib/lzws/stream/abstract.rb', line 20

def transcode_options
  @transcode_options
end

Instance Method Details

#advise ⇒ Object 



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# File 'lib/lzws/stream/abstract.rb', line 54

def advise
  # Noop
  nil
end

#close ⇒ Object 



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# File 'lib/lzws/stream/abstract.rb', line 135

def close
  @io.close

  nil
end

#closed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lzws/stream/abstract.rb', line 141

def closed?
  @raw_stream.closed? && @io.closed?
end

#rewind ⇒ Object

– etc –



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# File 'lib/lzws/stream/abstract.rb', line 122

def rewind
  @raw_stream = create_raw_stream

  @io.rewind if @io.respond_to? :rewind

  reset_buffer
  reset_io_advise

  @pos = 0

  0
end

#set_encoding(*args) ⇒ Object

– encoding –



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# File 'lib/lzws/stream/abstract.rb', line 61

def set_encoding(*args)
  external_encoding, internal_encoding, transcode_options = process_set_encoding_arguments(*args)

  set_target_encoding :@external_encoding, external_encoding
  set_target_encoding :@internal_encoding, internal_encoding
  @transcode_options = transcode_options

  self
end

#to_io ⇒ Object 



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# File 'lib/lzws/stream/abstract.rb', line 145

def to_io
  self
end