Ruby的256色终端库？

Question

是否有像' Term :: ANSIColor '这样的宝石可以使用256色终端？perl脚本256colors2.pl在我的终端中运行良好,我想在我的ruby脚本中使用其中一些颜色,而无需手动插入ANSI代码.

Answer 1

这是256colors2.pl脚本改编为ruby,在本指南的帮助下.它定义了print_color(text, foreground, background)一种应该可以轻松应用于项目的方法.它以彩色打印字符串,然后将颜色重置为终端默认值.如果您愿意,应该很容易跳过重置.

def rgb(red, green, blue)
  16 + (red * 36) + (green * 6) + blue
end

def gray(g)
  232 + g
end

def set_color(fg, bg)
  print "\x1b[38;5;#{fg}m" if fg
  print "\x1b[48;5;#{bg}m" if bg
end

def reset_color
  print "\x1b[0m"
end

def print_color(txt, fg, bg)
  set_color(fg, bg)
  print txt
  reset_color
end

# convenience method
def rgb_cube
  for green in 0..5 do
    for red in 0..5 do
      for blue in 0..5 do
        yield [red, green, blue]
      end 
      print " "
    end
    puts
  end
end

# rgb list on black bg
rgb_cube do |red, green, blue|
  print_color("%d%d%d  " % [red, green, blue], rgb(red, green, blue), nil)
end
puts

# rgb list on white bg
rgb_cube do |red, green, blue|
  print_color("%d%d%d  " % [red, green, blue], rgb(red, green, blue), 15)
end
puts

# system palette:
print "System colors:\n";
(0..7).each do |color|
  print_color("  ", nil, color)
end
puts

(8..15).each do |color|
  print_color("  ", nil, color)
end
puts
puts

# color cube
print "Color cube, 6x6x6:\n"
rgb_cube do |red, green, blue|
  print_color("  ", nil, rgb(red, green, blue))
end
puts

# grayscale ramp
print "Grayscale ramp:\n"
for g in (0..23) do 
  print_color("  ", nil, gray(g))
end

puts
puts

Answer 2

这个宝石应该处理你需要的东西:彩虹