Class: PS::ProcessList

Inherits:
Object
  • Object
show all
Defined in:
lib/ps/process_list.rb,
lib/ps/process_list_printer.rb

Defined Under Namespace

Classes: Printer

Instance Method Summary collapse

Constructor Details

#initialize(target = nil) ⇒ ProcessList

Returns a new instance of ProcessList.



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# File 'lib/ps/process_list.rb', line 3

def initialize(target=nil)
  @target = target || []
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(*args, &blk) ⇒ Object

Ugh shoot me for using method missing, couldn’t get it to work any other way.



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# File 'lib/ps/process_list.rb', line 79

def method_missing(*args, &blk)
  new_target = @target.send(*args, &blk)

  new_target.class == @target.class ? self.class.new(new_target) : new_target
end

Instance Method Details

#choose(question = nil) ⇒ Object

Print out all the processes and accept user input to return the process objects selected.



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# File 'lib/ps/process_list.rb', line 33

def choose question=nil
  if empty?
    puts "No processes found."
    return self
  end
  question ||= 'Select process(s):'
  self.print
  puts "\n#{question}"
  proc_ids = STDIN.gets.chomp
  proc_ids = '*' if proc_ids.empty?
  proc_ids = proc_ids.split(/[,\s]/)

  if proc_ids.include?('*')
    proc_ids = (0..self.size).to_a
  else
    proc_ids = proc_ids.collect do |proc_id|
      case proc_id
      when /^\d+$/
        proc_id.to_i
      when /^(\d+)(\.{2,3})(\d*)$/
        if $3.empty?
          ($1.to_i..self.size).to_a
        elsif $2.size === 3
          ($1.to_i...$3.to_i).to_a
        else
          ($1.to_i..$3.to_i).to_a
        end
      when /^(\d+)\-(\d+)$/
        ($1.to_i..$2.to_i).to_a
      end
    end.flatten.uniq
  end

  procs = self.class.new

  proc_ids.each do |proc_id|
    proc = @target[proc_id.to_i]

    procs << proc
  end

  procs
end

#command(regex) ⇒ Object 



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# File 'lib/ps/process_list.rb', line 7

def command regex
  grep(regex) {|proc| proc.command||proc.cmd}
end

#over(val, amnt) ⇒ Object 



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# File 'lib/ps/process_list.rb', line 15

def over val, amnt
  find_all do |proc|
    proc.__send__(val) >= amnt
  end
end

#pids ⇒ Object 



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# File 'lib/ps/process_list.rb', line 11

def pids
  @target.collect {|proc| proc.pid}.compact
end

#print(headers = nil, to = nil) ⇒ Object 



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# File 'lib/ps/process_list.rb', line 25

def print headers=nil, to=nil
  to ||= STDOUT
  printer = Printer.new(self,headers)
  to.send :puts, printer.to_s
end

#to_a ⇒ Object 



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# File 'lib/ps/process_list.rb', line 21

def to_a
  @target
end