Class: Console

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

Class Method Summary collapse

Class Method Details

.ascii(i) ⇒ Object 



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# File 'lib/rshell/console.rb', line 2

def self.ascii(i)
  $is_ascii = i
end

.clear ⇒ Object

reset the terminal



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# File 'lib/rshell/console.rb', line 6

def self.clear           # reset the terminal
  print "\ec"       # *42*
end

.color(*arg) ⇒ Object

colorize a string



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# File 'lib/rshell/console.rb', line 10

def self.color(*arg)                         # colorize a string
  if arg[0].is_a?(Array)
    arg = arg[0]
  end
  if arg.length == 0
    arg = :default, :red, :bg_default
  end
  attribute = {         # mapper for the attributes
    :normal     => 0,
    :bright     => 1,
    :dim        => 2,
    :underscore => 4,
    :blink      => 5,
    :reverse    => 7,
    :hidden     => 8,
    :default    => 0
  }
  fg_color = {          # mapper for the foreground color
    :black   => 30,
    :red     => 31,
    :green   => 32,
    :yellow  => 33,
    :blue    => 34,
    :magenta => 35,
    :cyan    => 36,
    :white   => 37,
    :default => 39
  }
  bg_color = {          # mapper for the background color
    :bg_black   => 40,
    :bg_red     => 41,
    :bg_green   => 42,
    :bg_yellow  => 43,
    :bg_blue    => 44,
    :bg_magenta => 45,
    :bg_cyan    => 46,
    :bg_white   => 47,
    :bg_default => 49
  }
  if arg.length > 0                 # turn symbols into numbers
    arg[0] = attribute[arg[0]]      # attributes
  end
  if arg.length > 1
    arg[1] = fg_color[arg[1]]       # foreground color
  end
  if arg.length > 2
    arg[2] = bg_color[arg[2]]       # background color
  end
  "\e[#{arg.join(";")}m"   # magic ansi escape sequence
end

.color=(arg) ⇒ Object 



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# File 'lib/rshell/console.rb', line 61

def self.color=(arg)
  if not arg.is_a?(Array)
    arg = [arg]
  end
  if arg.length == 0
    arg = :default, :red, :bg_default
  end
  print self.color(arg)
end

.height ⇒ Object 



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# File 'lib/rshell/console.rb', line 75

def self.height
  `tput lines`.chomp.to_i
end

.width ⇒ Object 



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# File 'lib/rshell/console.rb', line 71

def self.width
  `tput cols`.chomp.to_i
end