InvisibleEncoder/EncoderLibrary.lua at main · picocode1/InvisibleEncoder · GitHub

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localerror=error
localipairs=ipairs
localstring=string
localtable=table
localunpack=unpack
localprint=print

localbit=bitorbit32
ifbit==nilthen
bit= {}
localMOD=2^32
localMODM=MOD-1
functionbit.bxor(a, b)
localp, c=1, 0
whilea>0andb>0do
localra, rb=a%2, b%2
ifra~=rbthen
c=c+p
end
a, b, p= (a-ra) /2, (b-rb) /2, p*2
end
ifa<bthen
a=b
end
whilea>0do
localra=a%2
ifra>0then
c=c+p
end
a, p= (a-ra) /2, p*2
end
returnc
end
functionbit.band(a, b)
return (a+b-bit.bxor(a, b)) /2
end
functionbit.bor(a, b)
returnMODM-bit.band((MODM-a), (MODM-b))
end
functionbit.lshift(a, disp)
ifdisp<0then
returnbit.rshift(a, -disp)
end
returna*2^disp%2^32
end
functionbit.rshift(a, disp)
ifdisp<0then
returnbit.lshift(a, -disp)
end
returnmath.floor(a%2^32/2^disp)
end
end

localutf8=utf8
ifutf8==nilthen
utf8= {}
utf8.char=function(...)
localbuf= {}
fork, vinipairs({
...,
 }) do
ifv<0orv>1114111then
error("bad argument #" ..k.." to char (out of range)", 2)
end
localb1, b2, b3, b4=nil, nil, nil, nil
ifv<128then
table.insert(buf, string.char(v))
elseifv<2048then
b1=bit.bor(192, bit.band(bit.rshift(v, 6), 31))
b2=bit.bor(128, bit.band(v, 63))
table.insert(buf, string.char(b1, b2))
elseifv<65536then
b1=bit.bor(224, bit.band(bit.rshift(v, 12), 15))
b2=bit.bor(128, bit.band(bit.rshift(v, 6), 63))
b3=bit.bor(128, bit.band(v, 63))
table.insert(buf, string.char(b1, b2, b3))
else
b1=bit.bor(240, bit.band(bit.rshift(v, 18), 7))
b2=bit.bor(128, bit.band(bit.rshift(v, 12), 63))
b3=bit.bor(128, bit.band(bit.rshift(v, 6), 63))
b4=bit.bor(128, bit.band(v, 63))
table.insert(buf, string.char(b1, b2, b3, b4))
end
end
returntable.concat(buf, "")
end
end

localhelpers= {}
functionhelpers.StringToBytes(str)
localbytes= {
str:byte(1, -1),
	}
fori=1, #bytesdo
bytes[i] =bytes[i] +12
end
returntable.concat(bytes, "'")
end
functionhelpers.StringSplit(str)
localt= {}
str:gsub(".", function(b)
t[#t+1] =b
end)
returnt
end
functionhelpers.SplitBytes(str)
localindex=0
localt= {}
str=str:gsub("255'172", "")
localassembled=""
forchunkinstring.gmatch(str, "([^']+)") do
ifindex==1then
index=0
assembled=assembled.."'" ..chunk
table.insert(t, assembled)
else
assembled=chunk
index=index+1
end
end
returnt
end
functionhelpers.ToBytes(str)
returnstr:gsub(".", function(b)
return"\\" ..b:byte()
end)
end
functionhelpers.ToString(bytes)
return (bytes
 :gsub("\\(%d+)", function(b)
returnb:char()
end)
 :gsub("\\", ""))
end

localascp_characters= {
"\\",
"0",
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8",
"9",
}
localreplace_characters= {
917536,
917537,
917538,
917539,
917540,
917541,
917542,
917543,
917544,
917545,
917546,
}

localcharacters= {
characters= {},
reverse= {},
}
fori, vinipairs(ascp_characters) do
characters.characters[v] =replace_characters[i]
localcorresponding= (helpers.StringToBytes(utf8.char(replace_characters[i])):gsub("255'172'", ""))
characters.reverse[corresponding] =v
end

locallibrary= {}
functionlibrary.encode(str)
str=helpers.ToBytes(str)
localencoded= {}
fori, vinipairs(helpers.StringSplit(str)) do
encoded[i] =utf8.char(characters.characters[v])
end
returntable.concat(encoded, "")
end
functionlibrary.decode(str)
localdecoded= {}
localbytes=helpers.SplitBytes(helpers.StringToBytes(str))
fori, vinipairs(bytes) do
decoded[i] =characters.reverse[v]
end
returnhelpers.ToString(table.concat(decoded, ""))
end
library.helpers=helpers

returnlibrary