Class: IO
- Inherits:
-
Object
- Object
- IO
- Defined in:
- lib/readbytes.rb
Instance Method Summary collapse
-
#readbytes(n) ⇒ Object
Reads exactly
n
bytes.
Instance Method Details
#readbytes(n) ⇒ Object
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.
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# File 'lib/readbytes.rb', line 20 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 |