Class: ShellB::Command

Inherits:
Object
  • Object
show all
Defined in:
lib/shellb/command.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(shell, name, *opts) ⇒ Command

Returns a new instance of Command.



8
9
10
11
12
 
# File 'lib/shellb/command.rb', line 8

def initialize(shell, name, *opts)
  @shell = shell
  @name = name
  @opts = opts
end

Instance Attribute Details

#block ⇒ Object (readonly)

Returns the value of attribute block.



5
6
7
 
# File 'lib/shellb/command.rb', line 5

def block
  @block
end

#downstream ⇒ Object

Returns the value of attribute downstream.



6
7
8
 
# File 'lib/shellb/command.rb', line 6

def downstream
  @downstream
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



5
6
7
 
# File 'lib/shellb/command.rb', line 5

def name
  @name
end

#opts ⇒ Object (readonly)

Returns the value of attribute opts.



5
6
7
 
# File 'lib/shellb/command.rb', line 5

def opts
  @opts
end

#shell ⇒ Object (readonly)

Returns the value of attribute shell.



5
6
7
 
# File 'lib/shellb/command.rb', line 5

def shell
  @shell
end

Instance Method Details

#<(from) ⇒ Object 



29
30
31
32
 
# File 'lib/shellb/command.rb', line 29

def <(from)
  @input = from
  self
end

#>(to) ⇒ Object 



19
20
21
22
 
# File 'lib/shellb/command.rb', line 19

def >(to)
  @output = to
  self
end

#>>(to) ⇒ Object 



24
25
26
27
 
# File 'lib/shellb/command.rb', line 24

def >>(to)
  @append = to
  self
end

#pretty_print(pp) ⇒ Object 



57
58
59
60
61
62
63
64
65
66
67
 
# File 'lib/shellb/command.rb', line 57

def pretty_print(pp)
  pp.object_group(self) do
    pp.breakable
    pp.text "@name="
    pp.pp @name

    pp.breakable
    pp.text "@opts="
    pp.pp @opts
  end
end

#redirection_parts ⇒ Object 



34
35
36
37
38
39
 
# File 'lib/shellb/command.rb', line 34

def redirection_parts
  return [">", @output.to_s] if @output
  return [">>", @append.to_s] if @append
  return ["<", @input.to_s] if @input
  return []
end

#to_s ⇒ Object 



41
42
43
 
# File 'lib/shellb/command.rb', line 41

def to_s
  "<Command: #{name} #{opts.join(" ")}>"
end

#to_sh ⇒ Object 



45
46
47
48
49
50
51
52
53
54
55
 
# File 'lib/shellb/command.rb', line 45

def to_sh
  parts = []
  parts << Shellwords.shelljoin([name, *opts])

  unless (rd_parts = redirection_parts.join(" ")).empty?
    parts.last << " " + rd_parts
  end

  parts << downstream.to_sh if downstream
  parts.join(" | ")
end

#|(command) ⇒ Object 



14
15
16
17
 
# File 'lib/shellb/command.rb', line 14

def |(command)
  shell.drop_command(command)
  self.downstream = command
end