Module: BagIt::Validity

Defined in:
lib/dpn/bagit/ext/bagit/valid.rb

Instance Method Summary collapse

Instance Method Details

#consistent? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dpn/bagit/ext/bagit/valid.rb', line 5

def consistent?
  (manifest_files|tagmanifest_files).each do |mf|
    # get the algorithm implementation
    readAlgo = /manifest-(.+).txt$/.match(File.basename(mf))[1]
    algo = case readAlgo
          when /sha1/i
            Digest::SHA1
          when /md5/i
            Digest::MD5
          when /sha256/i
            Digest::SHA256
          when /sha384/i
            Digest::SHA384
          when /sha512/i
            Digest::SHA512
          else
            errors.add :consistency, "Algorithm #{readAlgo} is invalid or unsupported."
            return false
        end
    # Check every file in the manifest
    File.open(mf) do |io|
      io.each_line do |line|
        expected, path = line.chomp.split(/\s+/, 2)
        file = File.join(bag_dir, path)
        if File.exist? file
          actual = algo.file(file).hexdigest
          if expected != actual
            errors.add :consistency, "expected #{file} to have #{algo}: #{expected}, actual is #{actual}"
          end
        end
      end
    end
  end


  errors.on(:consistency).nil?
end