class Bundler::Thor::Shell::Color

Inherit from Bundler::Thor::Shell::Basic and add set_color behavior. Check Bundler::Thor::Shell::Basic to see all available methods.

Constants

BLACK

Set the terminal’s foreground ANSI color to black.

BLUE

Set the terminal’s foreground ANSI color to blue.

BOLD

The start of an ANSI bold sequence.

CLEAR

Embed in a String to clear all previous ANSI sequences.

CYAN

Set the terminal’s foreground ANSI color to cyan.

GREEN

Set the terminal’s foreground ANSI color to green.

MAGENTA

Set the terminal’s foreground ANSI color to magenta.

ON_BLACK

Set the terminal’s background ANSI color to black.

ON_BLUE

Set the terminal’s background ANSI color to blue.

ON_CYAN

Set the terminal’s background ANSI color to cyan.

ON_GREEN

Set the terminal’s background ANSI color to green.

ON_MAGENTA

Set the terminal’s background ANSI color to magenta.

ON_RED

Set the terminal’s background ANSI color to red.

ON_WHITE

Set the terminal’s background ANSI color to white.

ON_YELLOW

Set the terminal’s background ANSI color to yellow.

RED

Set the terminal’s foreground ANSI color to red.

WHITE

Set the terminal’s foreground ANSI color to white.

YELLOW

Set the terminal’s foreground ANSI color to yellow.

Public Instance Methods

set_color(string, *colors) click to toggle source

Set color by using a string or one of the defined constants. If a third option is set to true, it also adds bold to the string. This is based on Highline implementation and it automatically appends CLEAR to the end of the returned String.

Pass foreground, background and bold options to this method as symbols.

Example:

set_color "Hi!", :red, :on_white, :bold

The available colors are:

:bold
:black
:red
:green
:yellow
:blue
:magenta
:cyan
:white
:on_black
:on_red
:on_green
:on_yellow
:on_blue
:on_magenta
:on_cyan
:on_white

# File bundler/vendor/thor/lib/thor/shell/color.rb, line 79
def set_color(string, *colors)
  if colors.compact.empty? || !can_display_colors?
    string
  elsif colors.all? { |color| color.is_a?(Symbol) || color.is_a?(String) }
    ansi_colors = colors.map { |color| lookup_color(color) }
    "#{ansi_colors.join}#{string}#{CLEAR}"
  else
    # The old API was `set_color(color, bold=boolean)`. We
    # continue to support the old API because you should never
    # break old APIs unnecessarily :P
    foreground, bold = colors
    foreground = self.class.const_get(foreground.to_s.upcase) if foreground.is_a?(Symbol)

    bold       = bold ? BOLD : ""
    "#{bold}#{foreground}#{string}#{CLEAR}"
  end
end

Protected Instance Methods

are_colors_disabled?() click to toggle source 
# File bundler/vendor/thor/lib/thor/shell/color.rb, line 107
def are_colors_disabled?
  !ENV['NO_COLOR'].nil?
end
are_colors_supported?() click to toggle source 
# File bundler/vendor/thor/lib/thor/shell/color.rb, line 103
def are_colors_supported?
  stdout.tty? && ENV["TERM"] != "dumb"
end
can_display_colors?() click to toggle source 
# File bundler/vendor/thor/lib/thor/shell/color.rb, line 99
def can_display_colors?
  are_colors_supported? && !are_colors_disabled?
end