Module: PseudoTerminal::Client

Included in:
PseudoTerminal
Defined in:
lib/pseudo-terminal/client.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#b ⇒ Object

Returns the value of attribute b.



5
6
7
 
# File 'lib/pseudo-terminal/client.rb', line 5

def b
  @b
end

#r ⇒ Object

Returns the value of attribute r.



5
6
7
 
# File 'lib/pseudo-terminal/client.rb', line 5

def r
  @r
end

#timeout ⇒ Object

Returns the value of attribute timeout.



5
6
7
 
# File 'lib/pseudo-terminal/client.rb', line 5

def timeout
  @timeout
end

#w ⇒ Object

Returns the value of attribute w.



5
6
7
 
# File 'lib/pseudo-terminal/client.rb', line 5

def w
  @w
end

Instance Method Details

#<<(command, &block) ⇒ Object 



18
19
20
 
# File 'lib/pseudo-terminal/client.rb', line 18

def << command, &block
  put command, &block
end

#initialize(opt = {}) ⇒ Object 



7
8
9
10
11
12
13
14
15
16
 
# File 'lib/pseudo-terminal/client.rb', line 7

def initialize opt={}
  opt[:ready] ||= '> '
  opt[:sh] ||= "env PS1='#{opt[:ready]}' TERM=dumb sh -i"
  opt[:timeout] ||= 1
  @timeout = opt[:timeout]
  @r, @w, @pid = PTY.spawn opt[:sh]
  @b = PseudoTerminal::Buffer.new opt[:ready]
  read
  @b.masks << @b.lines.pop while @b.lines.empty? == false
end

#is_running? ⇒ Boolean

Returns:

  • (Boolean) 


27
28
29
30
31
32
33
34
 
# File 'lib/pseudo-terminal/client.rb', line 27

def is_running?
  begin
    Process.getpgid @pid
    true
  rescue Errno::ESRCH
    false
  end
end

#kill! ⇒ Object 



36
37
38
39
40
41
42
43
 
# File 'lib/pseudo-terminal/client.rb', line 36

def kill!
  @r.close
  @w.close
  begin
    Process.wait @pid
  rescue PTY::ChildExited
  end
end

#put(command, &block) ⇒ Object 



22
23
24
25
 
# File 'lib/pseudo-terminal/client.rb', line 22

def put command, &block
  @w.puts command
  read &block
end

#read(&block) ⇒ Object 



45
46
47
48
49
50
51
52
53
54
55
 
# File 'lib/pseudo-terminal/client.rb', line 45

def read &block
  begin
    read_loop &block
  rescue IO::WaitReadable
    t = IO.select([@r], nil, nil, @timeout)
    retry unless t.nil?
    @b.lines
  rescue IOError
    nil
  end
end