Class: Bychar::ReaderIOBuf

Inherits:
Object
  • Object
show all
Defined in:
lib/impls/reader_iobuf.rb

Instance Method Summary collapse

Constructor Details

#initialize(with_io, buffer_size = DEFAULT_BUFFER_SIZE) ⇒ ReaderIOBuf

Returns a new instance of ReaderIOBuf.



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# File 'lib/impls/reader_iobuf.rb', line 4

def initialize(with_io, buffer_size = DEFAULT_BUFFER_SIZE)
  @io = with_io
  @bufsize = buffer_size
  cache
end

Instance Method Details

#read_one_char ⇒ Object

Since you parse char by char, you will be tempted to do it in a tight loop and to call eof? on each iteration. Don’t. Instead. allow it to raise and do not check. This takes the profile time down from 36 seconds to 30 seconds for a large file.



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# File 'lib/impls/reader_iobuf.rb', line 13

def read_one_char
  cache if @buf.eos?
  return nil if @buf.eos?
  
  @buf.getch
end