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