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Add all-ruby-quine as a sample code
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This sample code works on all release versions of Ruby, from Ruby 0.49.
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mame committed Feb 27, 2023
1 parent 2535b18 commit b670420
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24 changes: 24 additions & 0 deletions sample/all-ruby-quine.rb
@@ -0,0 +1,24 @@
eval($s=("t='eval($s=('+d=34.chr;s=3
2.chr+$s*i=8;v=$VERSION||eval('begin;v=V
ERSION;rescue;v||RUBY_VERSION;end');f=('?'*8
+'A|'+'?'*20+'G?c'+'?'*15+'A@CXx@~@_`OpGxCxp@~pO
xS|O~G?c?q?xC`AP|q?x_|C_xC_xO@H@cG?G?qA|_|_`GCpOxC|H
NFccqq@`_|OF@`?q?x_@x_x_`GB`O``O~G?C@qCxCxP@D@|G~C?pO|C?
pO|C?AP|A~HNN`ccxC|Q@L@B"+"GpGpc@p?x_`GB`???_@FO|OB@
xC|P`@?c?q?HPx@~@_`G@`????@L^`?q?x?xq@|_|O~GC`
xA~@_@GBD').unpack('c*');w=4+v.length*u=
15;r=10.chr;j=0;while-24+w*u>i=1+i
;x=i%w;x>0||t=t+d+'+'+r+d;k=
i/w%12>2&&x%u>3&&x%u+i
/w*11-34+('-._'.
index(c=v[
x/u,1]
)||c.hex +3)*99|
|0; k=f [k/6 ][k%
6]; t=t +s[
k*j =k+ j,1
]end;pr int (t+
d+' ).s pli
t.j oin [0,
609 ])# Y.E. '+r)
").split .join)#
32 changes: 32 additions & 0 deletions test/test_trick.rb
@@ -1,6 +1,7 @@
require "test/unit"
require "ripper"
require "envutil"
require "stringio"

# This is a test suite for TRICK entries, joke Ruby program contest.
# The programs are very unusual, and not practical.
Expand Down Expand Up @@ -212,3 +213,34 @@ def test_03_mame
assert_in_out_err(["-W0", "-c", src], "", ["Syntax OK"])
end
end

# https://github.com/mame/all-ruby-quine
class TestAllRubyQuine < Test::Unit::TestCase
def test_all_ruby_quine
stdout_bak = $stdout
$stdout = StringIO.new
src = File.read(File.join(__dir__, "../sample/all-ruby-quine.rb"))

eval(src)

out = $stdout.string.lines(chomp: true)
$stdout = stdout_bak

# cheat OCR
font = {
"-" => 0x7ffffffffffe03fffffffffff, "." => 0x7fffffffffffffffffffc7f8f, "_" => 0x7fffffffffffffffffffff800,
"0" => 0x6030e03e07c0f81f03e038603, "1" => 0x70fc1f23fc7f8ff1fe3fc7c01, "2" => 0x4011f1fe3fc7e1f0f87c3f800,
"3" => 0x4031e3fe3f8e03fe3fe078c03, "4" => 0x783e0788e318e31c6003f1fe3, "5" => 0x0001fe3fc7f801fe1fe078401,
"6" => 0x78083e3fc7f8011e03e038401, "7" => 0x000fe1fc3f0fc3f0fc3f0fc3f, "8" => 0x4011f03e238e038e23e07c401,
"9" => 0x4010e03e03c400ff1fe078401, "a" => 0x7fffff00c787f88003e078408, "b" => 0x0ff1fe3fc408701f03e078001,
"c" => 0x7fffff8063c0ff1fe3fe3c601, "d" => 0x7f8ff1fe3004781f03e038408,
}.invert
out = (0...out.first.size / 15).map do |i|
font[(3..11).map {|j| out[j][i * 15 + 5, 11] }.join.gsub(/\S/, "#").tr("# ", "10").to_i(2)]
end.join

assert_equal(RUBY_VERSION, out)
ensure
$stdout = stdout_bak
end
end

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