Class: SolrWrapper::TgzExtractor

Inherits:
Object
  • Object
show all
Defined in:
lib/solr_wrapper/tgz_extractor.rb

Constant Summary collapse 

'././@LongLink'

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file, destination: nil) ⇒ TgzExtractor

Returns a new instance of TgzExtractor.



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# File 'lib/solr_wrapper/tgz_extractor.rb', line 10

def initialize(file, destination: nil)
  @file = file
  @destination = destination || Dir.mktmpdir
end

Instance Attribute Details

#destination ⇒ Object (readonly)

Returns the value of attribute destination.



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# File 'lib/solr_wrapper/tgz_extractor.rb', line 6

def destination
  @destination
end

#file ⇒ Object (readonly)

Returns the value of attribute file.



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# File 'lib/solr_wrapper/tgz_extractor.rb', line 6

def file
  @file
end

Instance Method Details

#extract! ⇒ Object 



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# File 'lib/solr_wrapper/tgz_extractor.rb', line 15

def extract!
  Gem::Package::TarReader.new(Zlib::GzipReader.open(file)) do |tar|
    dest = nil
    tar.each do |entry|
      if entry.full_name == TAR_LONGLINK
        dest = File.join destination, entry.read.strip
        next
      end
      dest ||= File.join destination, entry.full_name
      if entry.directory?
        File.delete dest if File.file? dest
        FileUtils.mkdir_p dest, mode: entry.header.mode, verbose: false
      elsif entry.file?
        FileUtils.rm_rf dest if File.directory? dest
        File.open dest, 'wb' do |f|
          f.print entry.read
        end
        FileUtils.chmod entry.header.mode, dest, verbose: false
      elsif entry.header.typeflag == '2' # Symlink!
        File.symlink entry.header.linkname, dest
      end
      dest = nil
    end
  end
rescue StandardError => e
  abort "Unable to extract #{file} into #{destination}: #{e.message}"
end