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ruby19
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lib64
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ruby
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1.9.1
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expect.rb
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$expect_verbose = false class IO # Reads from the IO until pattern +pat+ matches or the +timeout+ is over. # It returns an array with the read buffer, followed by the matches. # If a block is given, the result is yielded to the block and returns nil. # # The optional timeout parameter defines, in seconds, the total time to wait # for the pattern. If the timeout expires or eof is found, nil is returned # or yielded. However, the buffer in a timeout session is kept for the next # expect call. The default timeout is 9999999 seconds. def expect(pat,timeout=9999999) buf = '' case pat when String e_pat = Regexp.new(Regexp.quote(pat)) when Regexp e_pat = pat else raise TypeError, "unsupported pattern class: #{pattern.class}" end @unusedBuf ||= '' while true if not @unusedBuf.empty? c = @unusedBuf.slice!(0).chr elsif !IO.select([self],nil,nil,timeout) or eof? then result = nil @unusedBuf = buf break else c = getc.chr end buf << c if $expect_verbose STDOUT.print c STDOUT.flush end if mat=e_pat.match(buf) then result = [buf,*mat.to_a[1..-1]] break end end if block_given? then yield result else return result end nil end end