module BagIt::Validity

Public Instance Methods

consistent?() click to toggle source
# 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