Class: MultishItem

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(command, index, count) ⇒ MultishItem

Returns a new instance of MultishItem.



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# File 'lib/multish.rb', line 12

def initialize(command, index, count)
  @command = command
  @index = index
  @count = count
  @output = ''
end

Instance Attribute Details

#command ⇒ Object (readonly)

Returns the value of attribute command.



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# File 'lib/multish.rb', line 10

def command
  @command
end

Instance Method Details

#color_code ⇒ Object 



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# File 'lib/multish.rb', line 42

def color_code
  if !@wait_thr
    4
  elsif finished?
    errored? ? 3 : 2
  else # rubocop:disable Lint/DuplicateBranch
    4
  end
end

#color_print(window, input) ⇒ Object 



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# File 'lib/multish.rb', line 89

def color_print(window, input)
  parse_commands(input) do |op, arg|
    case op
    when :string
      window.addstr(arg)
    when :reset
      window.attroff(Curses.color_pair(10) | Curses::A_BOLD)
    when :bold
      window.attron(Curses::A_BOLD)
    when :color
      Curses.init_pair(10, arg, BRIGHT_WHITE)
      window.attron(Curses.color_pair(10))
    when :error
      raise "ERROR: #{arg}"
    end
  end
end

#create_window! ⇒ Object 



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# File 'lib/multish.rb', line 35

def create_window!
  @nav_window = Curses::Window.new(1, width - 1, top, left)
  @window = Curses::Window.new(height - 1, width - 1, top + 1, left)
  @window.scrollok(true)
  update_title!
end

#errored? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/multish.rb', line 52

def errored?
  @exit_code && @exit_code != 0
end

#finished? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/multish.rb', line 173

def finished?
  return false unless @wait_thr

  ret = !@wait_thr.alive?
  if ret && !@exit_code
    @exit_code = @wait_thr.value
  end
  ret
end

#height ⇒ Object 



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

def height
  Curses.lines
end

#left ⇒ Object 



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# File 'lib/multish.rb', line 27

def left
  width * @index
end

#open_process! ⇒ Object 



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# File 'lib/multish.rb', line 67

def open_process!
  @stdin, @stdout, @stderr, @wait_thr = Open3.popen3(@command)
  @stdin.close
end

#parse_commands(string) ⇒ Object 



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# File 'lib/multish.rb', line 107

def parse_commands(string)
  parse_string(string) do |op, arg|
    case op
    when :string
      yield [:string, arg]
    when :escape
      if arg == '[m'
        yield [:reset]
      elsif arg[/^\[(\d+;)+(\d+)m$/]
        args = ($1 + $2).split(';')
        args.each do |subarg|
          subarg = subarg.to_i
          case subarg
          when 1
            yield [:bold]
          when 30..37
            color = Curses::COLOR_BLACK + subarg - 30
            yield [:color, color]
          end
        end
      end
    when :error
      yield [:error, arg]
    end
  end
end

#parse_string(string) {|[:string, chars]| ... } ⇒ Object

Yields:

  • ([:string, chars]) 


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# File 'lib/multish.rb', line 134

def parse_string(string)
  len = string.length
  i = 0
  chars = ''
  while i < len
    char = string[i]
    if char == "\e"
      yield [:string, chars] if !chars.empty? && block_given?
      chars = ''
      escape = ''
      i += 1
      if string[i] == '['
        escape << string[i]
        i += 1
      else
        return yield [:error, string]
      end
      while string[i] =~ /[\x30-\x3f]/
        escape << string[i]
        i += 1
      end
      while string[i] =~ /[\x20–\x2f]/
        escape << string[i]
        i += 1
      end
      if string[i] =~ /[\x40-\x7e]/
        escape << string[i]
      else
        return yield [:error, string]
      end
      yield [:escape, escape] if block_given?
    else
      chars << char
    end
    i += 1
  end
  yield [:string, chars] if !chars.empty? && block_given?
end

#print(text) ⇒ Object 



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# File 'lib/multish.rb', line 83

def print(text)
  @output << text
  color_print(@window, text)
  @window.refresh
end

#print_output! ⇒ Object 



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# File 'lib/multish.rb', line 183

def print_output!
  warn window_title.red
  warn @output
end

#streams ⇒ Object 



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# File 'lib/multish.rb', line 72

def streams
  [@stdout, @stderr]
end

#top ⇒ Object 



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

def top
  0
end

#try_update(fd) ⇒ Object

rubocop:disable Naming/MethodParameterName



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# File 'lib/multish.rb', line 76

def try_update(fd) # rubocop:disable Naming/MethodParameterName
  return unless [@stdout, @stderr].include?(fd)

  line = fd.gets
  print(line) if line
end

#update_title! ⇒ Object 



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# File 'lib/multish.rb', line 56

def update_title!
  @nav_window.setpos(0, 0)
  @nav_window.attron(Curses.color_pair(color_code) | Curses::A_REVERSE | Curses::A_BOLD)
  @nav_window.addstr(window_title.ljust(width - 1))
  @nav_window.refresh
end

#width ⇒ Object 



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# File 'lib/multish.rb', line 19

def width
  (Curses.cols / @count).floor
end

#window_title ⇒ Object 



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# File 'lib/multish.rb', line 63

def window_title
  finished? ? "[ #{command} ] -> #{@exit_code}" : "$ #{command}"
end