# File lib/rubygems/package/tar_reader.rb, line 36 def each loop do return if @io.eof? header = Gem::Package::TarHeader.from @io return if header.empty? entry = Gem::Package::TarReader::Entry.new header, @io size = entry.header.size yield entry skip = (512 - (size % 512)) % 512 if @io.respond_to? :seek then # avoid reading... @io.seek(size - entry.bytes_read, IO::SEEK_CUR) else pending = size - entry.bytes_read while pending > 0 do bread = @io.read([pending, 4096].min).size raise UnexpectedEOF if @io.eof? pending -= bread end end @io.read skip # discard trailing zeros # make sure nobody can use #read, #getc or #rewind anymore entry.close end end