Class: Omnizip::Formats::Rar3::Decompressor

Inherits:
Omnizip::Formats::Rar::RarFormatBase show all
Defined in:
lib/omnizip/formats/rar3/decompressor.rb

Overview

RAR v3 decompressor

Decompresses data using RAR v3 decompression algorithms. This implementation uses DEFLATE as a compatible fallback for demonstration purposes. Full RAR decompression requires proprietary algorithms.

Examples:

Decompressing data

decompressor = Rar3::Decompressor.new
original = decompressor.decompress(compressed, method: :normal)

Instance Attribute Summary

Attributes inherited from Omnizip::Formats::Rar::RarFormatBase

#spec, #version

Instance Method Summary collapse

Methods inherited from Omnizip::Formats::Rar::RarFormatBase

#block_type_code, #block_type_name, #compress, #compression_method_code, #compression_method_name, #dictionary_size_code, #encryption_algorithm, #read_archive, #supports_feature?, #verify_magic_bytes, #write_archive

Constructor Details

#initialize ⇒ Decompressor

Initialize a RAR v3 decompressor



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# File 'lib/omnizip/formats/rar3/decompressor.rb', line 20

def initialize
  super("rar3")
end

Instance Method Details

#decompress(data, method: :normal, **_options) ⇒ String

Decompress data using RAR v3 methods

Parameters:

  • data (String) —

    The compressed data

  • method (Symbol) (defaults to: :normal) —

    The compression method

  • options (Hash) —

    Decompression options

Returns:

  • (String) —

    The decompressed data



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# File 'lib/omnizip/formats/rar3/decompressor.rb', line 30

def decompress(data, method: :normal, **_options)
  case method
  when :store
    decompress_store(data)
  when :fastest, :fast, :normal, :good, :best
    decompress_deflate(data)
  else
    raise FormatError,
          "Unsupported decompression method: #{method}"
  end
end