/usr/lib/ruby/1.8/readbytes.rb is in libruby1.8 1.8.7.352-2ubuntu1.6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | # TruncatedDataError is raised when IO#readbytes fails to read enough data.
class TruncatedDataError<IOError
def initialize(mesg, data) # :nodoc:
@data = data
super(mesg)
end
# The read portion of an IO#readbytes attempt.
attr_reader :data
end
class IO
# Reads exactly +n+ bytes.
#
# If the data read is nil an EOFError is raised.
#
# If the data read is too short a TruncatedDataError is raised and the read
# data is obtainable via its #data method.
def readbytes(n)
str = read(n)
if str == nil
raise EOFError, "End of file reached"
end
if str.size < n
raise TruncatedDataError.new("data truncated", str)
end
str
end
end
if __FILE__ == $0
begin
loop do
print STDIN.readbytes(6)
end
rescue TruncatedDataError
p $!.data
raise
end
end
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