forked from minetest-mods/irc
21 lines
610 B
Lua
21 lines
610 B
Lua
--Base 64 encode -- for SASL authentication
|
|
local b='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
|
|
function irc.b64e(data)
|
|
return ((data:gsub('.', function(x)
|
|
local r,b='',x:byte()
|
|
for i=8,1,-1 do r=r..(b%2^i-b%2^(i-1)>0 and '1' or '0') end
|
|
return r;
|
|
end)..'0000'):gsub('%d%d%d?%d?%d?%d?', function(x)
|
|
if (#x < 6) then return '' end
|
|
local c=0
|
|
for i=1,6 do c=c+(x:sub(i,i)=='1' and 2^(6-i) or 0) end
|
|
return b:sub(c+1,c+1)
|
|
end)..({ '', '==', '=' })[#data%3+1])
|
|
end
|
|
|
|
|
|
-- Requested by Exio
|
|
string.expandvars = function(s, vars)
|
|
return s:gsub("%$%(([^)]+)%)", vars)
|
|
end
|