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Unicode HQ9+ Implementation
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#!/usr/bin/env ruby | |
# coding: utf-8 | |
## | |
# In HQ9+ Hello world programs were unnecessarily long which caused a | |
# dramatic waste in space. It is estimated that a massive 4 PB of | |
# storage space worldwide is used to store "Hello, World!" programs a | |
# further 2 PB of space is used to store "Hello, World" programs. Q9+ | |
# attempts to solve this problem this problem by making the empty file a | |
# "Hello World" program. As a result of this a standard 2 TB harddrive | |
# can now store over 2 million Hello World programs. The complete source | |
# code for the "Hello, World!" program in Q9+ is listed below: | |
# | |
# | |
# | |
# HQ9+: http://web.archive.org/web/20090602074545/http://www.cliff.biffle.org/esoterica/hq9plus.html | |
# Q9+'s spec: | |
# | |
# - An empty file prints "Hello, world!" | |
# - Q Prints the entire text of the source code file. | |
# - 9 Prints the complete canonical lyrics to "99 Bottles of Beer on the Wall" | |
# - + Increments the accumulator. | |
# | |
# Since Q requires the complete source code, you can't process it from stdin. | |
source_code = "" | |
while (f = gets) do | |
source_code << f | |
end | |
$accumulator = 0 | |
$bottles = 0 | |
def bottles(n) | |
if n > 0 | |
$bottles += 1 | |
"#{n} 🍶 of 🍺 on the wall, #{n} 🍶 of 🍺. \nTake one down, pass it around, #{n-1} 🍶 of 🍺 on the wall.\n" + bottles(n-1) | |
else | |
"" | |
end | |
end | |
if source_code == "" then | |
puts "Hello, world!" | |
end | |
source_code.chars do |c| | |
if (c == "Q") | |
puts source_code | |
elsif (c == "9") | |
puts bottles(99) | |
elsif (c == "+") | |
$accumulator += 1 | |
else | |
# Nothing | |
end | |
end | |
if ENV["DEBUG"] == "true" | |
puts "=== DEBUG ===" | |
puts "" | |
puts "Total Bottles: #{$bottles}" | |
puts "Accumulator: #{$accumulator}" | |
end |
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