vt100 in ruby

term.rb

# http://www.lihaoyi.com/post/BuildyourownCommandLinewithANSIescapecodes.html

# Colours

print "\u001b[30m A \u001b[31m B \u001b[32m C \u001b[33m D \u001b[0m\n"
print "\u001b[34m E \u001b[35m F \u001b[36m G \u001b[37m H \u001b[0m\n"
print "\n"

# Bright colours

print "\u001b[30;1m A \u001b[31;1m B \u001b[32;1m C \u001b[33;1m D \u001b[0;1m\n"
print "\u001b[34;1m E \u001b[35;1m F \u001b[36;1m G \u001b[37;1m H \u001b[0;1m\n"
print "\n"

# 256 Colours

(0...16).each do |i|
  (0...16).each do |j| 
    code = (i * 16 + j).to_s
    printf("\u001b[38;5;%sm%4s", code, code.ljust(4))
  end
  print "\u001b[0m"
  print "\n"
end
print "\n"

# Background colours

print "\u001b[40m A \u001b[41m B \u001b[42m C \u001b[43m D \u001b[0m"
print "\u001b[44m A \u001b[45m B \u001b[46m C \u001b[47m D \u001b[0m"
print "\u001b[40;1m A \u001b[41;1m B \u001b[42;1m C \u001b[43;1m D \u001b[0m"
print "\u001b[44;1m A \u001b[45;1m B \u001b[46;1m C \u001b[47;1m D \u001b[0m"
print "\n"
print "\n"

# Background colours 256

(0...16).each do |i|
  (0...16).each do |j| 
    code = (i * 16 + j).to_s
    printf("\u001b[48;5;%sm%4s", code, code.ljust(4))
  end
  print "\u001b[0m"
  print "\n"
end
print "\n"

# bold italic and underline

print "\u001b[1m BOLD \u001b[0m\u001b[4m Underline \u001b[0m\u001b[7m Reversed \u001b[0m\n\n"

# Movement

move_up = "\u001b[1A"
move_down = "\u001b[1B"
move_right = "\u001b[1C"
move_left = "\u001b[1D"

print "Merry Christmas!"
sleep 1
print "\u001b[16DHappy New Year!\n"