Generate Solarized theme for urxvt

urxvt-solarized.rb

# Map color names to actual values
SOLARIZED = {
  :base03  => '#002b36', # brblack
  :base02  => '#073642', # black
  :base01  => '#586e75', # brgreen
  :base00  => '#657b83', # bryellow
  :base0   => '#839496', # brblue
  :base1   => '#93a1a1', # brcyan
  :base2   => '#eee8d5', # white
  :base3   => '#fdf6e3', # brwhite
  :yellow  => '#b58900', # yellow
  :orange  => '#cb4b16', # brred
  :red     => '#dc322f', # red
  :magenta => '#d33682', # magenta
  :violet  => '#6c71c4', # brmagenta
  :blue    => '#268bd2', # blue
  :cyan    => '#2aa198', # cyan
  :green   => '#859900'  # green
}

# Base terminal color mapping
BASE = {
  'color0'  => :base02,
  'color8'  => :base03,

  'color1'  => :red,
  'color9'  => :orange,

  'color2'  => :green,
  'color10' => :base01,

  'color3'  => :yellow,
  'color11' => :base00,

  'color4'  => :blue,
  'color12' => :orange,

  'color5'  => :magenta,
  'color13' => :violet,

  'color6'  => :cyan,
  'color14' => :base1,

  'color7'  => :base2,
  'color15' => :base3
}

HEADER = '# Solarized theme'

def make_theme(colors)
  hash = Hash.new { |h, k| h[k] = BASE[k] }
  colors.each { |k, v| hash[k] = v }
  return hash
end

def write_theme(file, theme)
  file.puts HEADER
  file.puts "*fading: 40"
  file.puts "*fadeColor: #{SOLARIZED[theme['background']]}"
  file.puts "*foreground: #{SOLARIZED[theme['foreground']]}"
  file.puts "*background: #{SOLARIZED[theme['background']]}"
  (0 .. 15).each do |i|
    file.puts "*color#{i}: #{SOLARIZED[theme["color#{i}"]]}"
  end
end

DARK = make_theme({
  'foreground' => :base0,
  'background' => :base03
})

BRIGHT = make_theme({
  'foreground' => :base01,
  'background' => :base3
})

if ARGV.size < 1 then
  puts "Usage: #{$0} <dark|bright>"
  exit 1
end

theme = nil
case ARGV.first
when 'dark'
  theme = DARK
when 'bright'
  theme = BRIGHT
else
  puts "Unknown theme"
  exit 1
end

xdefaults = File.expand_path('~/.Xdefaults')

lines = []
lines = File.readlines xdefaults
lines = lines.take_while do |l|
  l.strip != HEADER
end

File.open(xdefaults, 'w') do |f|
  lines.each { |l| f.puts l }
  write_theme(f, theme)
end