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#!/usr/bin/env lua
-- (C) 2022 Flecken-chan
-- Dis progwam comes with ABSOLUTELY NO WAWWANTY
-- Dis iz fwee software, and your'e welcome to redistwibute it under certain conditions
local u = {
"u", "ü", "ǘ", "ú", "ù", "ǜ", "o", "ö", "ø", "ó", "ò", "ð",
"U", "Ü", "Ǘ", "Ú", "Ù", "Ǜ", "O", "Ö", "Ø", "Ó", "Ò",
}
local w = {
"w", "W",
}
local words = {"nya", "rawr", "ara", "awoo"}
math.randomseed(69420)
function string:randomcase()
local s = ""
for i = 1, #self do
local c = self:sub(i, i)
if math.random() < 0.5 then
c = c:upper()
end
s = s .. c
end
return s
end
local encode = {}
local decode = {}
for i = 0, 255 do
local c
repeat
if math.random() < 0.5 then
c =
u[math.random(#u)] ..
w[math.random(#w)] ..
u[math.random(#u)]
else
c = words[math.random(#words)]:randomcase()
end
if math.random() < 0.5 then
c = c .. "~"
end
until not decode[c]
encode[i] = c
decode[c] = i
end
if arg[1] == "encode" then
local buf
local num = 0
while true do
local c = io.read(1)
if buf and c ~= buf then
local e = encode[buf:byte(1)] .. " "
if num == 1 then
io.write(e)
else
io.write("" .. num .. "x " .. e)
end
num = 1
else
num = num + 1
end
buf = c
if not c then
break
end
end
elseif arg[1] == "decode" then
local buf = ""
local num = 1
while true do
local c = io.read(1)
if not c then
break
end
if c == " " then
local n = buf:sub(-1) == "x" and tonumber(buf:sub(1, -2))
if n then
num = n
else
if not decode[buf] then
error("decode error")
end
local d = string.char(decode[buf])
for i = 1, num do
io.write(d)
end
num = 1
end
buf = ""
else
buf = buf .. c
end
end
if buf ~= "" then
error("trailing data")
end
else
print("Usage: " .. arg[0] .. " encode|decode")
os.exit(1)
end
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