Class: PSTree

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/pstree.rb,
lib/pstree/version.rb

Defined Under Namespace

Classes: ProcStruct

Constant Summary collapse

VERSION =

PSTree version

'0.3.0'
VERSION_ARRAY =

:nodoc:

VERSION.split('.').map(&:to_i)
VERSION_MAJOR =

:nodoc:

VERSION_ARRAY[0]
VERSION_MINOR =

:nodoc:

VERSION_ARRAY[1]
VERSION_BUILD =

:nodoc:

VERSION_ARRAY[2]

Instance Method Summary collapse

Constructor Details

#initialize(root_pid = nil, charset: 'UTF-8') ⇒ PSTree

Returns a new instance of PSTree.



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# File 'lib/pstree.rb', line 18

def initialize(root_pid = nil, charset: 'UTF-8')
  @charset  = charset.to_s.upcase
  @root_pid = root_pid.to_i
end

Instance Method Details

#children_not_zero(last) ⇒ Object 



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# File 'lib/pstree.rb', line 31

def children_not_zero(last)
  if @charset == 'UTF-8'
    last ? '├─ ' : '│  '
  else
    last ? '+- ' : '|  '
  end
end

#children_zero(last) ⇒ Object 



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# File 'lib/pstree.rb', line 23

def children_zero(last)
  if @charset == 'UTF-8'
    last ? '└─ ' : '   '
  else
    last ? '`- ' : '   '
  end
end

#each(&block) ⇒ Object 



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# File 'lib/pstree.rb', line 55

def each(&block)
  build
  recurse @root_pid, &block
  self
end

#to_s ⇒ Object 



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# File 'lib/pstree.rb', line 39

def to_s
  build
  result = ''
  recurse @root_pid,
    -> children, last {
      if children.zero?
        result << children_zero(last)
      else
        result << children_not_zero(last)
      end
    } do |ps|
    result << ps.to_s << "\n"
  end
  result
end