Class: Zip::Deflater

Inherits:

Compressor

• Object
• Compressor
• Zip::Deflater

Defined in:

lib/pik/contrib/zip/zip.rb

Overview

:nodoc:all

Instance Attribute Summary

• #crc ⇒ Object readonly

  Returns the value of attribute crc.

• #size ⇒ Object readonly

  Returns the value of attribute size.

Instance Method Summary

• #<<(data) ⇒ Object
• #finish ⇒ Object
• #initialize(outputStream, level = Zlib::DEFAULT_COMPRESSION) ⇒ Deflater constructor

  A new instance of Deflater.

Constructor Details

#initialize(outputStream, level = Zlib::DEFAULT_COMPRESSION) ⇒ Deflater

Returns a new instance of Deflater.

# File 'lib/pik/contrib/zip/zip.rb', line 1069

def initialize(outputStream, level = Zlib::DEFAULT_COMPRESSION)
  super()
  @outputStream = outputStream
  @zlibDeflater = Zlib::Deflate.new(level, -Zlib::MAX_WBITS)
  @size = 0
  @crc = Zlib::crc32
end

Instance Attribute Details

#crc ⇒ Object (readonly)

Returns the value of attribute crc.

# File 'lib/pik/contrib/zip/zip.rb', line 1090

def crc
  @crc
end

#size ⇒ Object (readonly)

Returns the value of attribute size.

# File 'lib/pik/contrib/zip/zip.rb', line 1090

def size
  @size
end

Instance Method Details

#<<(data) ⇒ Object

# File 'lib/pik/contrib/zip/zip.rb', line 1077

def << (data)
  val = data.to_s
  @crc = Zlib::crc32(val, @crc)
  @size += val.size
  @outputStream << @zlibDeflater.deflate(data)
end

#finish ⇒ Object

# File 'lib/pik/contrib/zip/zip.rb', line 1084

def finish
  until @zlibDeflater.finished?
	@outputStream << @zlibDeflater.finish
  end
end