1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
# frozen_string_literal: false
module Colored2
COLORS = {
black: 30,
red: 31,
green: 32,
yellow: 33,
blue: 34,
magenta: 35,
cyan: 36,
white: 37
}.freeze
EFFECTS = {
no_color: 0,
bold: 1,
dark: 2,
italic: 3,
underlined: 4,
reversed: 7,
plain: 21, # non-bold
normal: 22
}.freeze
class Code
attr_accessor :name, :escape
def initialize(name)
@name = name
return if name.nil?
@escape = codes[name.to_sym]
raise ArgumentError, "No color or effect named #{name} exists for #{self.class}." if @escape.nil?
end
def value(shift = nil)
escape_code = escape
escape_code += shift if shift && escape_code
name && escape ? "\e[#{escape_code}m" : ''
end
def to_s
value
end
end
class Effect < Code
def codes
EFFECTS
end
end
class TextColor < Code
def codes
COLORS
end
end
class BackgroundColor < TextColor
def value
super(10)
end
end
end
|
