Class: Inspec::TarProvider

Inherits:
FileProvider show all
Defined in:
lib/inspec/file_provider.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from FileProvider

#binread, for_path, #relative_provider

Constructor Details

#initialize(path) ⇒ TarProvider

Returns a new instance of TarProvider.



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# File 'lib/inspec/file_provider.rb', line 154

def initialize(path)
  @path = path
  @contents = {}
  @files = []
  walk_tar(@path) do |tar|
    @files = tar.find_all(&:file?)

    # delete all entries with no name
    @files = @files.find_all { |x| !x.full_name.empty? && x.full_name.squeeze("/") !~ %r{\.{2}(?:/|\z)} }

    # delete all entries that have a PaxHeader
    @files = @files.delete_if { |x| x.full_name.include?("PaxHeader/") }

    # replace all items of the array simply with the relative filename of the file
    @files.map! { |x| Pathname.new(x.full_name).relative_path_from(Pathname.new(".")).to_s }
  end
end

Instance Attribute Details

#files ⇒ Object (readonly)

Returns the value of attribute files.



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# File 'lib/inspec/file_provider.rb', line 152

def files
  @files
end

Instance Method Details

#extract(destination_path = ".") ⇒ Object 



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# File 'lib/inspec/file_provider.rb', line 172

def extract(destination_path = ".")
  FileUtils.mkdir_p(destination_path)

  walk_tar(@path) do |files|
    files.each do |file|
      next unless @files.include?(file.full_name)

      final_path = File.join(destination_path, file.full_name)

      # This removes the top level directory (and any other files) to ensure
      # extracted files do not conflict.
      FileUtils.remove_entry(final_path) if File.exist?(final_path)

      FileUtils.mkdir_p(File.dirname(final_path))
      File.open(final_path, "wb") { |f| f.write(file.read) }
    end
  end
end

#read(file) ⇒ Object 



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# File 'lib/inspec/file_provider.rb', line 191

def read(file)
  @contents[file] ||= read_from_tar(file)
end