Module: CLIMarkdown::Colors

Included in:
Converter, TaskPaper, Redcarpet::Render::Console, String
Defined in:
lib/mdless/colors.rb

Constant Summary collapse

ESCAPE_REGEX = 
/(?<=\[)(?:(?:(?:[349]|10)[0-9]|[0-9])?;?)+(?=m)/.freeze
COLORS = 
{
  :reset => 0,     # synonym for :clear
  :x => 0,
  :bold => 1,
  :b => 1,
  :dark => 2,
  :d => 2,
  :italic => 3,     # not widely implemented
  :i => 3,
  :underline => 4,
  :underscore => 4,     # synonym for :underline
  :u => 4,
  :blink => 5,
  :rapid_blink => 6,     # not widely implemented
  :negative => 7,     # no reverse because of String#reverse
  :r => 7,
  :concealed => 8,
  :strikethrough => 9,     # not widely implemented
  :black => 30,
  :red => 31,
  :green => 32,
  :yellow => 33,
  :blue => 34,
  :magenta => 35,
  :cyan => 36,
  :white => 37,
  :on_black => 40,
  :on_red => 41,
  :on_green => 42,
  :on_yellow => 43,
  :on_blue => 44,
  :on_magenta => 45,
  :on_cyan => 46,
  :on_white => 47,
  :intense_black => 90,    # High intensity, aixterm (works in OS X)
  :intense_red => 91,
  :intense_green => 92,
  :intense_yellow => 93,
  :intense_blue => 94,
  :intense_magenta => 95,
  :intense_cyan => 96,
  :intense_white => 97,
  :on_intense_black => 100,    # High intensity background, aixterm (works in OS X)
  :on_intense_red => 101,
  :on_intense_green => 102,
  :on_intense_yellow => 103,
  :on_intense_blue => 104,
  :on_intense_magenta => 105,
  :on_intense_cyan => 106,
  :on_intense_white => 107
}

Instance Method Summary collapse

Instance Method Details

#blackout(bgcolor) ⇒ Object 



126
127
128
129
130
 
# File 'lib/mdless/colors.rb', line 126

def blackout(bgcolor)
  key = bgcolor.to_sym
  bg = COLORS.key?(key) ? COLORS[key] : 40
  self.gsub(/(^|$)/,"\e[#{bg}m").gsub(/3([89])m/,"#{bg};3\\1m")
end

#c(args) ⇒ Object 



178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
 
# File 'lib/mdless/colors.rb', line 178

def c(args)
  out = []

  args.each do |arg|
    if arg.to_s =~ /^([bf]g|on_)?([a-f0-9]{3}|[a-f0-9]{6})$/i
      out.concat(rgb(arg.to_s))
    elsif COLORS.key? arg
      out << COLORS[arg]
    end
  end
  if !out.empty?
    "\e[#{out.join(';')}m"
  else
    ''
  end
end

#last_color_code ⇒ Object

Get the calculated ANSI color at the end of the string

Returns:

  • ANSI escape sequence to match color



74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
 
# File 'lib/mdless/colors.rb', line 74

def last_color_code
  m = scan(ESCAPE_REGEX)

  em = []
  fg = nil
  bg = nil
  rgbf = nil
  rgbb = nil

  m.each do |c|
    case c
    when '0'
      em = ['0']
      fg, bg, rgbf, rgbb = nil
    when /;38;/
      fg = nil
      rgbf = c
    when /;48;/
      bg = nil
      rgbb = c
    else
      em = []
      c.split(/;/).each do |i|
        x = i.to_i
        if x <= 9
          em << x
        elsif x >= 30 && x <= 39
          rgbf = nil
          fg = x
        elsif x >= 40 && x <= 49
          rgbb = nil
          bg = x
        elsif x >= 90 && x <= 97
          rgbf = nil
          fg = x
        elsif x >= 100 && x <= 107
          rgbb = nil
          bg = x
        end
      end
    end
  end

  escape = ''
  escape += "\e[#{em.join(';')}m" unless em.empty?
  escape += "\e[#{rgbb}m" if rgbb
  escape += "\e[#{rgbf}m" if rgbf
  fg_bg = [fg, bg].delete_if(&:nil?).join(';')
  escape += "\e[#{fg_bg}m" unless fg_bg.empty?
  escape
end

#remove_pre_post ⇒ Object 



61
62
63
 
# File 'lib/mdless/colors.rb', line 61

def remove_pre_post
  gsub(/<<(pre|post)\d+>>/, '')
end

#size_clean ⇒ Object 



136
137
138
 
# File 'lib/mdless/colors.rb', line 136

def size_clean
  self.uncolor.size
end

#uncolor ⇒ Object 



57
58
59
 
# File 'lib/mdless/colors.rb', line 57

def uncolor
  self.unpad.gsub(/\e\[[\d;]+m/,'')
end

#uncolor! ⇒ Object 



132
133
134
 
# File 'lib/mdless/colors.rb', line 132

def uncolor!
  self.replace self.uncolor
end

#unpad ⇒ Object 



65
66
67
 
# File 'lib/mdless/colors.rb', line 65

def unpad
  self.gsub(/\u00A0/, ' ')
end

#wrap(width = 78, foreground = :x) ⇒ Object 



140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
 
# File 'lib/mdless/colors.rb', line 140

def wrap(width=78, foreground=:x)
  return self if uncolor =~ /(^([%~] |\s*>)| +[=-]{5,})/

  visible_width = 0
  lines = []
  line = ''
  last_ansi = ''

  line += match(/^\s*/)[0].gsub(/\t/, '    ')
  input = dup # .gsub(/(\w-)(\w)/,'\1 \2')
  # input.gsub!(/\[.*?\]\(.*?\)/) do |link|
  #   link.gsub(/ /, "\u00A0")
  # end
  input.split(/\s/).each do |word|
    last_ansi = line.last_color_code
    if word =~ /[\s\t]/
      line << word
    elsif visible_width + word.size_clean >= width
      lines << line + xc
      visible_width = word.size_clean
      line = last_ansi + word
    elsif line.empty?
      visible_width = word.size_clean
      line = last_ansi + word
    else
      visible_width += word.size_clean + 1
      line << ' ' << last_ansi + word
    end
  end
  lines << line + match(/\s*$/)[0] + xc if line
  lines.map!.with_index do |l, i|
    (i.positive? ? l[i - 1].last_color_code : '') + l
  end
  lines.join("\n").gsub(/\[.*?\]\(.*?\)/) do |link|
    link.gsub(/\u00A0/, ' ')
  end
end