# File lib/fileutils.rb, line 1074
1074:     def fu_blksize(st)
1075:       s = st.blksize
1076:       return nil unless s
1077:       return nil if s == 0
1078:       s
1079:     end

      # File lib/fileutils.rb, line 1081
1081:     def fu_default_blksize
1082:       1024
1083:     end

      # File lib/fileutils.rb, line 1065
1065:     def fu_stream_blksize(*streams)
1066:       streams.each do |s|
1067:         next unless s.respond_to?(:stat)
1068:         size = fu_blksize(s.stat)
1069:         return size if size
1070:       end
1071:       fu_default_blksize()
1072:     end

      # File lib/fileutils.rb, line 1054
1054:     def fu_windows?
1055:       /mswin|mingw|bccwin|wince|emx/ =~ RUBY_PLATFORM
1056:     end