Class: VpsAdmin::CLI::Commands::VpsRemoteControl::InputHandler

Inherits:
EventMachine::Connection
  • Object
show all
Defined in:
lib/vpsadmin/cli/commands/vps_remote_console.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ InputHandler

Returns a new instance of InputHandler.



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# File 'lib/vpsadmin/cli/commands/vps_remote_console.rb', line 17

def initialize
  @private_buffer = ''
  @buffer = ''
  @end_seq = ["\r", "\e", "."]
  @end_i = 0
end

Instance Attribute Details

#buffer ⇒ Object

Returns the value of attribute buffer.



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# File 'lib/vpsadmin/cli/commands/vps_remote_console.rb', line 15

def buffer
  @buffer
end

Instance Method Details

#receive_data(data) ⇒ Object

Data is checked on the presence of the end sequence. The first character in the sequence (ENTER) can be read multiple times in a row and it is to be forwarded.

When the second character in the end sequence is read, it is not forwarded, but stored in a private buffer. If the sequence is later broken, the private buffer is forwarded and reset.

If the whole end sequence is read, EM event loop is stopped.



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# File 'lib/vpsadmin/cli/commands/vps_remote_console.rb', line 33

def receive_data(data)
  data.each_char do |char|
    if char == @end_seq[ @end_i ]
      if @end_i == @end_seq.size-1
        EM.stop
        return
      end

      @end_i += 1

      if @end_i == 1
        @buffer += char

      else
        @private_buffer += char
      end

    elsif char == @end_seq.first
      @buffer += char

    else
      @end_i = 0

      unless @private_buffer.empty?
        @buffer += @private_buffer
        @private_buffer.clear
      end

      @buffer += char
    end
  end
end